UM2271 User manual - st.com · January 2018 DocID030906 Rev 3 1/77 1 UM2271 User manual Discovery...

January 2018 DocID030906 Rev 3 1/77

1

UM2271User manual

Discovery kit with STM32L4R9AI MCU

Introduction

The 32L4R9IDISCOVERY kit is a complete demonstration and development platform for the STMicroelectronics Arm® Cortex®-M4 core-based STM32L4R9AI microcontroller. Leveraging the innovative ultra-low power oriented features, 640 Kbytes of embedded RAM, graphics performance (Chrom-ART Accelerator™) and DSI controller offered by the STM32L4R9AI, the 32L4R9IDISCOVERY kit enables users to easily prototype applications with state-of-the-art energy efficiency, as well as providing stunning audio and graphics rendering with direct support for an AMOLED DSI round display. For even more user-friendliness, the on-board ST-LINK/V2-1 debugger provides out-of-the-box programming and debugging capabilities.

The STM32L4R9AI microcontroller features four I2Cs, five USARTs, one ULP UART, three SPIs, two SAIs, one SDIO, one USB 2.0 full-speed OTG, two CANs, one FMC parallel synchronous interface, one 12-bit ADC, one 12-bit DAC, two ULP analog comparators, two op amps, one 2 data-lane DSI display, one digital filter for sigma delta modulator and SWP interface, two Octo-SPI interfaces, 8- to 14-bit camera interface, one touch sensing controller interface, JTAG and SWD debugging support.

This Discovery board offers everything required for users to get started quickly and develop applications easily.The hardware features on the board help to evaluate the following peripherals: USB OTG FS, microSD™ card, 8-bit camera interface, 16-Mbit PSRAM, PMOD and STMod+ connectors, IDD measurement, full-duplex I2S with an audio codec and stereo headset jack including an analog microphone, DFSDM with a pair of MEMS digital microphones on board, 512-Mbit Octo-SPI Flash memory device, I2C extension connector, 1.2" AMOLED display using a one data-lane DSI interface with a capacitive touch panel. The Arduino™ compatible connectors expand the functionality with a wide choice of specialized shields. The integrated ST-LINK/V2-1 provides an embedded in-circuit debugger and programmer for the STM32 MCU.

Pictures are not contractual

Figure 1. 32L4R9IDISCOVERY top view Figure 2. 32L4R9IDISCOVERY bottom view

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Contents UM2271

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Contents

1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7 Technology partners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

8 Bootloader limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

9 AMOLED display limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

10 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

10.1 32L4R9IDISCOVERY layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

10.2 32L4R9IDISCOVERY mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . 15

10.3 Embedded ST_LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

10.3.1 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10.3.2 ST-LINK/V2-1 firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10.4 Low-power consumption status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10.5 TAG and SWD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10.6 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

10.6.1 Power supply sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

10.6.2 MCU power supply options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

10.6.3 Supplying 32L4R9IDISCOVERY through ST-LINK/V2-1 USB . . . . . . . . 22

10.6.4 Measurement of MCU current consumption . . . . . . . . . . . . . . . . . . . . . 22

10.6.5 Program or debug when power supply not from ST-LINK/V2-1 . . . . . . . 23

10.7 Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10.8 Reset Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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10.9 Boot configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10.10 Audio codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

10.11 DFSDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

10.12 PSRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

10.13 USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

10.13.1 32L4R9IDISCOVERY as USB device . . . . . . . . . . . . . . . . . . . . . . . . . . 26

10.13.2 32L4R9IDISCOVERY as USB host . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

10.14 Octo-SPI Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

10.15 Virtual COM port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

10.16 Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

11.1 Arduino™ Uno V3 connectors CN10, CN11, CN16 and CN17 . . . . . . . . 29

11.2 DSI display, backlight and touch panel connector CN4 . . . . . . . . . . . . . . 31

11.2.1 DSI AMOLED display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

11.2.2 Backlight and OLED power supplies generation . . . . . . . . . . . . . . . . . . 33

11.2.3 Touch panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

11.3 USB OTG FS connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

11.4 ST-LINK/V2-1 USB Micro-B connector CN13 . . . . . . . . . . . . . . . . . . . . . 35

11.5 microSD card connector CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

11.6 STMod+ connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

11.7 PMOD connector CN3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

11.8 Camera module connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

11.9 TAG connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.10 SWD header CN5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.11 EXT_I2C connector CN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

11.12 Stereo headset and headphone jack CN12 . . . . . . . . . . . . . . . . . . . . . . . 42

Appendix A GPIO assignment and sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Appendix B Solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Appendix C STMod+ GPIO sharing and multiplexing . . . . . . . . . . . . . . . . . . . . . 53

Appendix D Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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Appendix E Fanout board (MB1280) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

E.1 MikroElektronika mikroBUS™ compatible connector (Fanout CN10 / CN11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

E.2 ESP-01 Wi-Fi® board compatible connector . . . . . . . . . . . . . . . . . . . . . . . 73

E.3 Compatible connectors for the Grove boards . . . . . . . . . . . . . . . . . . . . . . 73

E.3.1 Compatible connector for I2C Grove boards (Fanout CN3) . . . . . . . . . . 73

E.3.2 Compatible connector for UART Grove boards (Fanout CN2) . . . . . . . . 74

Appendix F Federal Communications Commission (FCC) and Industry Canada (IC) Compliance75

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

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UM2271 List of tables

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List of tables

Table 1. Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Table 2. JP10: VDD_STL setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Table 3. SW1 switch setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Table 4. 32L4R9IDISCOVERY power sources configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Table 5. JP4: power source selector setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Table 6. JP5: ARD 5 V input/output voltage selection setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Table 7. JP7: VDD setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Table 8. JP1: IDD_MCU measurement setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Table 9. JP3: VDDA and VDDUSB, settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Table 10. Boot modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Table 11. LD1 and LD2 details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Table 12. Buttons and LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Table 13. Arduino™ Uno V3 compatible connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Table 14. JP3, VDDA and VDDUSB, settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Table 15. DSI display connector CN4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Table 16. USB OTG FS Micro-AB connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Table 17. USB Micro-B connector CN13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Table 18. microSD connector CN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Table 19. STMod+ connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Table 20. Quad SPDT switch configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Table 21. PMOD connector CN3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Table 22. Camera module connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Table 23. TAG connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Table 24. SWD header CN5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Table 25. EXT_I2C connector CN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Table 26. I2C1 addresses (on board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Table 27. Audio jack connector CN12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Table 28. 32L4R9IDISCOVERY GPIO assignment and sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Table 29. MFX_V3 GPIO assignment (LQFP48) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Table 30. 32L4R9IDISCOVERY solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Table 31. STMod+ GPIO sharing and multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Table 32. SPDT quad switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Table 33. Description of the mikroBUS connectors (CN11 and CN10) . . . . . . . . . . . . . . . . . . . . . . . 73Table 34. Description of the ESP-01 Wi-Fi board connector pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Table 35. Description of the I2C Grove board connector pins (CN3) . . . . . . . . . . . . . . . . . . . . . . . . . 74Table 36. Description of the UART Grove board connector pins (CN2) . . . . . . . . . . . . . . . . . . . . . . . 74Table 37. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

List of figures UM2271

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List of figures

Figure 1. 32L4R9IDISCOVERY top view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. 32L4R9IDISCOVERY bottom view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 3. Hardware block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 4. 32L4R9IDISCOVERY top side layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 5. 32L4R9IDISCOVERY bottom side layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 6. 32L4R9IDISCOVERY mechanical drawing (top view, in mm) . . . . . . . . . . . . . . . . . . . . . . 15Figure 7. 32L4R9IDISCOVERY mechanical drawing (bottom view, in mm) . . . . . . . . . . . . . . . . . . . 16Figure 8. How to update driver software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 9. JP4 default configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Figure 10. DSI display connector CN4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Figure 11. USB OTG FS Micro-AB connector CN9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Figure 12. USB Micro-B connector CN13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Figure 13. microSD connector CN6 (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Figure 14. STMod+ connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Figure 15. PMOD connector CN3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Figure 16. Camera module connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Figure 17. TAG connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Figure 18. EXT_I2C connector CN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Figure 19. Stereo headset with microphone jack CN12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Figure 20. 32L4R9IDISCOVERY board interconnections (MB1311C) . . . . . . . . . . . . . . . . . . . . . . . . 56Figure 21. 32L4R9IDISCOVERY power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57Figure 22. 32L4R9IDISCOVERY Arduino™ Uno V3 connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Figure 23. 32L4R9IDISCOVERY ST-LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 24. 32L4R9IDISCOVERY Octo-SPI Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Figure 25. 32L4R9IDISCOVERY peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Figure 26. 32L4R9IDISCOVERY USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Figure 27. 32L4R9IDISCOVERY Round DSI display interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Figure 28. 32L4R9IDISCOVERY IDD measurement and Multi Function eXpander . . . . . . . . . . . . . . 64Figure 29. 32L4R9IDISCOVERY microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Figure 30. 32L4R9IDISCOVERY PSRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Figure 31. 32L4R9IDISCOVERY camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Figure 32. 32L4R9IDISCOVERY STMOD+ interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68Figure 33. 32L4R9IDISCOVERY Audio and DFSDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Figure 34. Round DSI display board (MB1314) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Figure 35. Fanout board (MB1280) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71Figure 36. STMod+ Fanout module plugged into CN1 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

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1 Features

• STM32L4R9AI Arm-based microcontroller with 2-Mbyte Flash memory and 640-Kbyte RAM in UFBGA169 package

• 1.2" 390x390 pixel AMOLED round display panel with 16 million colors depth, MIPI® DSI interface and capacitive touch panel

• USB OTG FS

• On-board current measurement

• SAI audio codec

• ST-MEMS digital microphones

• 16-Mbit asynchronous PSRAM

• 512-Mbit Octo-SPI Flash

• 2 user LEDs

• 1 reset push-button

• 4-direction joystick with selection button

• Board connectors:

– 8-bit camera

– USB OTG FS with Micro-AB

– Stereo headset jack including analog microphone input

– microSD card

• Board expansion connectors:

– Arduino™ Uno V3

– STMod+

– PMOD

– EXT_I2C

• Flexible power supply options:

– ST-LINK USB VBUS or external sources

• On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, virtual COM port and debug port

• Comprehensive free software libraries and examples available with the STM32Cube package

• Support of a wide choice of integrated development environments (IDEs), including IAR™, Keil® and GCC-based IDEs

2 Product marking

Evaluation tools marked as “ES” or “E” are not yet qualified and are therefore not ready to be used as reference design or in production. Any consequences arising from such usage

System requirements UM2271

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will not be at ST’s charge. In no event will ST be liable for any customer usage of these engineering sample tools as reference designs or in production.

‘E’ or ‘ES’ marking examples of location:

• on the targeted STM32 that is soldered on the board (for illustration of STM32 marking, refer to the section ‘Package information’ of the STM32 datasheet at www.st.com).

• next to the evaluation tool ordering part number, that is stuck or silkscreen printed on the board

This board features a specific STM32 device version which allows the operation of any stack or library. This STM32 device shows a ‘U’ marking option at the end of the standard part number and is not available for sales.

3 System requirements

• Windows® OS (7, 8 and 10), Linux® 64-bit or macOS®

• USB Type-A to Micro-B cable

4 Development toolchains

• Keil MDK-ARM(a)

• IAR EWARM(a)

• GCC-based IDEs including free SW4STM32 from AC6

5 Demonstration software

The demonstration software, included in the STM32Cube package corresponding to the on-board MCU, is preloaded in the STM32 Flash memory for easy demonstration of the device peripherals in standalone mode. The latest versions of the demonstration source code and associated documentation are downloadable from the www.st.com/stm32l4-discovery web page.

6 Ordering information

To order the 32L4R9IDISCOVERY kit, refer to Table 1.

a. On Windows only

http://www.st.com

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UM2271 Technology partners

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7 Technology partners

MACRONIX:

512-Mbit Octo-SPI NOR Flash memory device, part number MX25LM51245GXDI00

GOVISIONOX OPTOELECTRONICS:

1.2 inch 390x390 AMOLED display, part number G1120TB103GF-001

Table 1. Ordering information

Order code Target STM32

STM32L4R9I-DISCO STM32L4R9AII6

Bootloader limitations UM2271

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8 Bootloader limitations

Boot from system Flash memory results in executing bootloader code stored in the system Flash memory protected against writing and erasing. This allows in-system programming (ISP), that is, flashing the STM32 user Flash memory. It also allows writing data into RAM. The data come in via one of communication interfaces such as USART, SPI, I2C bus, USB or CAN.

Bootloader version is identified by reading the bootloader ID at the address 0x1FFF6FFE. Its value is 0x91 for bootloader V9.1 and 0x92 for V9.2.

The STM32L4R9AII6 part soldered on the 32L4R9IDISCOVERY main board is marked with a date code corresponding to its date of manufacturing. STM32L4R9AII6 parts with a date code prior or equal to week 37 of 2017 are fitted with bootloader V9.1 affected by the limitations to be worked around, as described hereunder. Parts with the date code starting from week 38 of 2017 contain bootloader V9.2 in which the limitations no longer exist.

To locate the visual date code information on the STM32L4R9II6 package, refer to its datasheet (DS12023) available at www.st.com, section Package Information. Date code related portion of the package marking takes Y WW format, where Y is the last digit of the year and WW is the week. For example, a part manufactured in week 38 of 2017 bares the date code 7 38.

There is also another mean to identify the need for workaround: before opening the blister of the Discovery Kit, just check the back side of the blister. At the bottom left corner, if the reference number is equal or higher than 32L4R9IDISCO/ 02-0, it means the bootloader version is V9.2 and there is no need to apply workaround. Any other inferior number like 01-0 needs the workaround.

Bootloader ID for the bootloader V9.1 is 0x91.

The following limitation exists in the bootloader V9.1:

Some user Flash memory data get corrupted when written via SPI interface

Description:

During bootloader SPI Write Flash operation, some random 64-bits (2 double-words) may be left blank at 0xFF

Workarounds:

WA1: add a delay between sending Write command and its ACK request. Its duration should be the duration of the 256-Byte Flash write time.

WA2: read back after each write operation (256 bytes or at end of user code flashing) and in case of error start write again.

WA3: Using bootloader, load a patch code in RAM to write in Flash memory through same Write Memory write protocol as bootloader (code provided by ST). The patch code is available for download from www.st.com website with a readme.txt file containing usage instructions.

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9 AMOLED display limitation

Warning: Permanent image sticking may occur if AMOLED displays same image for an extended period of time.

10 Hardware layout and configuration

32L4R9IDISCOVERY board is designed around the STM32L4R9AI (169 ball UFBGA package DSI version). The hardware block diagram Figure 3 illustrates the connection between STM32L4R9AI and peripherals (PSRAM, Octo-SPI Flash, DSI color display, USB OTG connector, USART, audio, camera connector, STMod+ and PMOD connectors, IDD measurement, joystick, microSD card, I2C extension connector, Arduino™ Uno V3 shields and embedded ST-LINK). Figure 4 and Figure 5 help the user to locate these features on the board. Mechanical drawing for 32L4R9IDISCOVERY and round DSI display boards is described in Figure 6.

Hardware layout and configuration UM2271

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Figure 3. Hardware block diagram

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10.1 32L4R9IDISCOVERY layout

Figure 4. 32L4R9IDISCOVERY top side layout


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Figure 5. 32L4R9IDISCOVERY bottom side layout

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10.2 32L4R9IDISCOVERY mechanical drawing

Figure 6. 32L4R9IDISCOVERY mechanical drawing (top view, in mm)

Legend:

= Indicates the mounting hole between the 32L4R9IDISCOVERY board (at the top of Figure 6) and the round DSI display board (at the bottom of Figure 6)


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Figure 7. 32L4R9IDISCOVERY mechanical drawing (bottom view, in mm)

Plastic spacer height = 13 mm, overall height = 26 mm ± 1 mm

10.3 Embedded ST_LINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated on the 32L4R9IDISCOVERY board. Compared to ST-LINK/V2, the changes are listed below:

• new features supported on ST-LINK/V2-1:

– USB software re-enumeration

– Virtual Com port interface on USB

– Mass storage interface on USB

– USB power management request for more than 100 mA power on USB

• features no more supported on ST-LINK/V2-1:

– SWIM interface

– Application voltage lower than 3 V

For general information concerning the debugging and programming features that are common to both versions V2 and V2-1, refer to ST-LINK/V2 in-circuit debugger/programmer.

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10.3.1 Drivers

Before connecting the 32L4R9IDISCOVERY to a Windows (7, 8, 10) PC via USB, a driver for ST-LINK/V2-1 must be installed. It is available on the www.st.com website.

If 32L4R9IDISCOVERY is connected to the PC before the driver is installed, some interfaces of the board may be declared as ‘Unknown’ in the PC device manager. In this case the user must install the driver files, and update the driver of the connected device from the device manager as shown on Figure 8: How to update driver software

Note: Prefer using the ‘USB Composite Device’ handle for a full recovery.

Figure 8. How to update driver software

10.3.2 ST-LINK/V2-1 firmware upgrade

The ST-LINK/V2-1 embeds a firmware upgrade mechanism for in-situ upgrade through the USB port. As the firmware may evolve during the life time of the ST-LINK/V2-1 product (such as new functionality, bug fixes or support for new microcontroller families), it is recommended to visit www.st.com before starting to use the 32L4R9IDISCOVERY and periodically, in order to stay up-to-date with the latest firmware version.

10.4 Low-power consumption status

There is a way to make the board get into very low power consumption status in which the current on +5 V may be below 20 uA. How to get into the low power mode:

1. The connections between ST-LINK/V2-1 and MCU must be disconnected by micro switch SW1 manually (see Table 3 below). Set JP4 on (7) ARD position, and put JP5 in ARD-5V IN position. Remove JP10. Then, connect an external 5 V power supply on CN16 pin 5 5V and on GND.

2. Peripherals (including display, CTP and PSRAM) are powered off by MOSFET which is controlled by MFX_GPIO8 / MFX_aGPIO2 (put them as input floating), and by setting


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all peripherals related I/Os to inactive level (input pull-down or input is good option according to I/Os).

3. Disconnect JP9 to remove +5 V from LD8 power LED, disconnect JP10 (or put it in 2-3 position), power off OCTOSPI (remove SB23/SB24) and configure related I/Os as input pull down.

4. Peripherals may be setup by FW to reach power down mode. All I/Os must be configured in non-consuming states. Set MFX_V3 to sleep mode, get SD card out of its socket slot. Set the Audio Codec in power down.

10.5 TAG and SWD

One TAG interface footprint CN8 is reserved on 32L4R9IDISCOVERY and is usable to debug and program the on-board MCU.

Note: Micro switch SW1 must be put in Off position. R24 and R31 must be disconnected.

The SWD 6-pin header CN5 added on 32L4R9IDISCOVERY, connected to on board ST-LINK MCU, is usable to debug and program an external MCU.

VDD from the external board is 1.8 V or 3.3 V, thanks to the on board voltage converter.

SW1 switch enables the debug and programing functions through USB STLK CN13 connector. SW1 is accessible on bottom side of 32L4R9IDISCOVERY. By default, SW1 is in On position. To put micro switch in Off position, just push away the switch from ON position as shown in Table 3.

Table 2. JP10: VDD_STL setting

Jumper Setting Description

JP10

Default setting.

VDD_STL gets power from 32L4R9IDISCOVERY. ST-LINK is then usable to program the on-board MCU.

VDD_STL gets power from external through CN5. ST-LINK is then usable to program an external MCU.

Table 3. SW1 switch setting

Switch Setting Description

SW1

Default setting.

SW1 switch is On.

It allows debug and program capabilities through USB STLK CN13 connector. When SW1 is On, a VBUS power must be present on USB STLK CN13 connector.

SW1 is Off.

Set this position if USB STLK CN13 is not used. Debug and program functions are not available.

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10.6 Power supply

10.6.1 Power supply sources

32L4R9IDISCOVERY is designed to be powered by +5 V DC power supply. It is possible to configure the 32L4R9IDISCOVERY to use any of the sources listed in Table 4. Check also detailed configuration on next page.

By Default, 32L4R9IDISCOVERY is powered through USB STLINK connector CN13, JP4 header has a jumper on (1) STLK, and SW1 is placed in ON position to allow debug and program features.

Choosing any other power source connector than CN13 requires either:

• to place SW1 in OFF position (with no debug/program possibility)

• to let SW1 in ON position, but connecting a USB PC host or Charger on CN13 is mandatory (for this configuration, refer to Section 10.6.5 for correct powering sequence)

For SW1 switch setting description, please refer to Table 3.

Note: 32L4R9IDISCOVERY must be powered by a power-supply unit or by an auxiliary equipment complying with the standard EN-60950-1: 2006+A11/2009, and must be safety extra low voltage (SELV) with limited power capability.

Figure 9 shows a physical description of the 10-pin header JP4 default configuration.

Table 4. 32L4R9IDISCOVERY power sources configuration

JP4 configuration (function)

Power source connector (pin name)

Voltage Available current

(1) STLK (USB_STLINK) CN13 (VBUS) 5 V 500 mA

(3) E5V (ARDUINO) CN16 (VIN) 6 V - 9 V => 5 VArduino™ Uno V3 shield dependent

(5) U5V (USB_OTG_FS) CN9 (VBUS) 5 VVBUS supply

dependent

(7) ARD (ARDUINO) CN16 (ARD-5V)(1)

1. ARD-5V is a power output pin to Arduino™ Uno V3 connector CN16 (default) or a power input pin from Arduino™ Uno V3 connector CN16, according to JP5 setting. See Table 6 below.

5 VArduino™ Uno V3 shield dependent

(9) CHGR (USB_STLINK) CN13 (VBUS) 5 VVBUS supply

dependent


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Figure 9. JP4 default configuration

Detailed description of all JP4 possible configurations are listed below and in Table 5:

• STLK: 5 V from the ST-LINK/V2-1 USB connector CN13 with 500 mA current limitation. Power mechanism of supplying the board by STLINK/V2-1 is explained Section 10.6.3. A jumper must be placed in location STLK of JP4, connecting pins 1 and 2. The green LED LD8 is lit on to confirm presence of 5 V voltage.

• E5V: 5 V from the 6 V to 9 V DC from VIN pin of Arduino™ Uno V3 compatible connector CN16 (the U15 regulator is converting VIN into a 5 V voltage). The VIN input voltage is limited to 9 V to keep temperature of the regulator U15 within its thermal safe area. A jumper must be placed connecting pins 3 and 4 of JP4. The green LED LD8 is lit on to confirm presence of 5 V voltage. Place SW1 in OFF position, or let SW1 in ON position and follow Section 10.6.5.

• U5V: 5 V from the 5 V DC of USB OTG FS user connector CN9. A jumper must be placed in location USB of JP4, connecting pins 5 and 6.The green LED LD8 is lit on to confirm presence of 5 V voltage. Place SW1 in OFF position, or let SW1 in ON position and follow Section 10.6.5.

• ARD: 5 V from the 5V pin of Arduino™ Uno V3 compatible connector CN16. A jumper must be placed in location ARD of JP4, connecting pins 7 and 8. Connect the pins 2 and 3 of JP5 to get power from Arduino™ Uno V3 (see Table 6). The green LED LD8 is lit on to confirm presence of 5 V power from Arduino™ Uno V3. Place SW1 in OFF position, or let SW1 in ON position and follow Section 10.6.5.

• CHGR: 5 V from 5 V DC power charger connected to USB STLINK (CN13). A jumper must be placed in location CHGR of JP4, connecting pins 9 and 10. The green LED LD8 is lit on to confirm presence of 5 V voltage. When this CHGR input is chosen, the 500 mA on-board limitation is no more effective. If 32L4R9IDISCOVERY is powered by an external USB charger, then the debug on CN13 is not available. If 32L4R9IDISCOVERY is powered by an external USB PC port, user must pay attention that this USB PC supports the sourcing of required current. SW1 may be placed in OFF position if debug or program features are not used.

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10.6.2 MCU power supply options

32L4R9IDISCOVERY offers possibility to supply the MCU under 1.8 V or 3.3 V. The JP7 jumper must be placed on +3V3 to supply the MCU with 3.3 V, connecting pins 1 and 2. The jumper may be placed on +1V8 of JP7 to supply the MCU with 1.8 V, connecting pins 2 and 3 (see Table 7).

Functions listed below are not compatible with the +1V8 setting of JP7:

• OCTOSPI

• PSRAM

• ARDUINO Uno Revision 3

• CAMERA

• microSD card

• ADC measurements (except if JP3 is set at +3V3, or except if VREF+ configuration is changed)

• USB OTG FS (except if JP3 is set at +3V3)

Table 5. JP4: power source selector setting


JP4

Default setting.

32L4R9IDISCOVERY is supplied though CN13 Micro-B ST-LINK/V2-1 connector.

32L4R9IDISCOVERY is supplied though Arduino™ Uno V3 connector CN16 (VIN). Place SW1 in OFF position, or let SW1 in ON position and follow Section 10.6.5.

32L4R9IDISCOVERY is supplied though USB OTG FS connector CN9. Place SW1 in OFF position, or let SW1 in ON position and follow Section 10.6.5.

32L4R9IDISCOVERY powers ARDUINO or is supplied by ARDUINO, according to JP5 setting in Table 6 below. Place SW1 in OFF position, or let SW1 in ON position and follow Section 10.6.5.

32L4R9IDISCOVERY is supplied though CN13 Micro-B ST-LINK/V2-1 connector.

Table 6. JP5: ARD 5 V input/output voltage selection setting


JP5

Default setting.

32L4R9IDISCOVERY supplies 5 V to Arduino™ Uno V3 connector CN16 (on 5V pin).

32L4R9IDISCOVERY is supplied by 5 V from Arduino™ Uno V3 connector CN16 (from 5V pin). In that case, JP4 must be placed in ARD position.


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10.6.3 Supplying 32L4R9IDISCOVERY through ST-LINK/V2-1 USB

To power the board through ST-LINK/V2-1, the USB host (a PC) must be connected with the 32L4R9IDISCOVERY standard Micro-B USB receptacle, via a USB cable. This event starts the USB enumeration procedure. In its initial phase, the current supply capability of the USB host port is limited to 100 mA. It is enough because only ST-LINK/V2-1 part of 32L4R9IDISCOVERY draws power at that time. If the solder bridge SB36 is open (default setting), the U11 ST890 power switch is set to Off position, which isolates the remainder of the board from the power source. In the next phase of the enumeration procedure, the host PC informs the ST-LINK/V2-1 facility of its capability to supply up to 500 mA current. If the answer is positive, the ST-LINK/V2-1 sets the U11 ST890 switch to On position to supply power to the remainder of the board. If the PC USB port is not capable of supplying up to 500 mA, another power source must be used (See Section 10.6.1 for details).

The ST890 power switch protects the host USB port against current demand exceeding 625 mA, in case a short circuit occurs on the board (the red LED fault LD5 lights on).

32L4R9IDISCOVERY may also be supplied by STLINK USB power source with no enumeration, such as a USB charger. In this particular case, ST-LINK/V2-1 turns the ST890 power switch on regardless of enumeration procedure result and passes the power unconditionally to the board. The green LED LD8 lights on whenever the whole board is powered.

10.6.4 Measurement of MCU current consumption

Jumper JP1 allows the consumption of STM32L4R9AI to be measured directly by a built-in MCU current ammeter circuit (MFX_V3, able to measure from 60 nA to 50 mA) or by removing the jumper and replace it by an external ammeter (see Table 8).

To measure the MCU consumption in standby or shutdown modes, MFX_V3 needs to run software. To wake up MCU from these modes, it is necessary to press the Reset button B1, or to wait a few seconds.

Table 7. JP7: VDD setting


JP7

Default setting.

VDD is powered from +3V3 regulator.

VDD is powered from +1V8 regulator.

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VDDA and VDDUSB power inputs from STM32L4R9AI may be connected to two different power sources, +3V3 or VDD_MCU. These power inputs may be included or not in the IDD current measurement of VDD_MCU, depending on the JP3 jumper configurations described in Table 9.

10.6.5 Program or debug when power supply not from ST-LINK/V2-1

To power the board from another connector than CN13, while keeping debug and program features possible, the following power sequence procedure must be respected:

1. Put a jumper on JP4 at desired location and set SW1 switch to ON position.

2. Connect the corresponding external power source.

3. Check the green LED LD8 is turned on.

4. Connect the PC to ST-LINK/V2-1 USB connector CN13.

Proceeding this way ensures that the enumeration succeeds, thanks to the external power source. If this order is not respected, the board may be powered by VBUS first from ST-LINK, and the following risks may be encountered:

• If more than 500 mA current is needed by the board, PC may be damaged or current is limited by PC. As a consequence the board is not powered correctly.

• 500 mA is requested at the enumeration, so there is a risk that the request is rejected and enumeration does not succeed if PC does not provide such current.

Table 8. JP1: IDD_MCU measurement setting


JP1

Default setting.

A module on the board is designed to measure from 60 nA to 50 mA by using several MOSFET, and switching automatically depending on the read value.

STM32L4R9AI is powered by VDD. MCU current measurement is not possible

No jumper on JP1: an ammeter may be connected on pins 2 and 3 to measure STM32L4R9AI current (if there is no ammeter, STM32L4R9AI is not powered).

Table 9. JP3: VDDA and VDDUSB, settings


JP3

Default setting.

VDDA and VDDUSB power pins of STM32L4R9AI are supplied with +3V3. the IDD measurement does not include their current consumption. USB OTG FS is functional even if JP7 is set on +1V8.

VDDA and VDDUSB power pins of STM32L4R9AI are supplied with VDD_MCU. The IDD measurement includes their current consumption.


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10.7 Clock sources

Two clock sources are used by STM32L4R9AI: one on LSE input and another on HSE input.

LSE clock source

The available clock source is X1, 32 kHz crystal for the STM32L4R9AI embedded RTC.

HSE clock source

The second clock source available by default is X2, 16 MHz crystal for the STM32L4R9AI HSE system clock.

Note that another HSE clocking option is available on PCB: MCO output from STLINK MCU to STM32L4R9AI HSE input. Please refer to Appendix B: Solder bridges.

10.8 Reset Source

The general reset of 32L4R9IDISCOVERY is active low. The reset sources are listed below:

• Reset button B1

• Embedded ST-LINK/V2-1, SW1 micro-switch set to On (default setting)

• Arduino™ Uno V3 compatible connector CN16 pin 3

The general reset is connected to following peripheral reset functions:

• STM32L4R9AI MCU reset

• Octo-SPI Flash reset

• MFX_V3 reset

• Camera reset

10.9 Boot configuration

After reset, STM32L4R9AI boots from one of the three different embedded memory locations, depending on BOOT0 and BOOT1 bits:

• Boot from the main Flash memory (MCU internal Flash). This is the default configuration.

• Boot from the system memory ISP (in-system programming).

• Boot from the SRAM1.

On 32L4R9IDISCOVERY board, the boot configuration of the MCU is controlled by the BOOT0 signal on PH3 pin.

BOOT0 is by default grounded through the R15 pull-down resistor.

It is possible to set BOOT0 high by removing resistor R15 and populating resistor R16 with a 0 ohm resistor. In this case, please take care that PH3 (multiplexed with BOOT0 function) is not used as a GPIO.

Please check below Table 10 for other boot modes.

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10.10 Audio codec

A Cirrus codec CS42L51-CNZ U26 connected to the SAI1 interface of STM32L4R9AI offers possibility to connect a stereo headphone or headset with a mono analog microphone.

The I²C-bus addresses of CS42L51-CNZ are 0x95 and 0x94.

10.11 DFSDM

Two ST-MEMS MP34DT01TR digital microphones U1 and U2 are available on 32L4R9IDISCOVERY. The two microphones are located at a distance of 21 mm from each other. They are connected to the STM32 DFSDM by the PC2 port, generating the clock, and by PB12 port, collecting the PDM interleaved data. These microphones are powered by MIC_VDD (PH2 of STM32L4R9AI).

The two DFSDM interface signals (clock and data), are also accessible on the STMod+ connector CN1. Before using STMod+, the user must follow the recommendations below:

• If STMod+ pin 17 is used, SB1 (DOUT) must be disconnected first.

• If STMod+ pins 18 or 20 are used, MIC_VDD GPIO (PH2) must be activated at high level first.

10.12 PSRAM

Two PSRAM footprints are supported on the design, both connected to STM32L4R9AI FMC interface:

• A 16-Mbit asynchronous PSRAM (U5), using up to A19 address, is soldered by default. Reference is IS66WV1M16EBLL-55BLI.

• A 32-Mbit synchronous PSRAM (U6), using up to A20 address, may be used. Reference is IS66WVC2M16ECLL-7010BLI. By default, this PSRAM (U6) is exclusive with CAMERA function (due to DCMI_D4 function multiplexed with A20 of MCU). In case CAMERA is used at the same time than

Table 10. Boot modes

nBOOT1 FLASH_OPTR[23]

nBOOT0 FLASH_OPTR[27]

BOOT0 pin PH3

nSWBOOT0 FLASH_OPTR[26]

Boot Memory Space Alias

X X 0 1Main Flash memory is selected as boot area

X 1 X 0Main Flash memory is selected as boot area

0 X 1 1Embedded SRAM1 is selected as boot area

0 0 X 0Embedded SRAM1 is selected as boot area

1 X 1 1System memory is selected as boot area

1 0 X 0System memory is selected as boot area


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PSRAM, it is possible to change two solder bridges to deactivate A20 on PSRAM (tied to high, usable density 16 Mbits) and DCMI_D4 is used for CAMERA.

Note: Limitation: the two PSRAM are not compatible with JP7 setting at +1V8.

See Appendix B: Solder bridges for possible PSRAM configuration change.

10.13 USB OTG FS

32L4R9IDISCOVERY supports USB OTG FS (full-speed) communication via the USB Micro-AB connector (CN9) and USB power switch (U16) connected to VBUS.

A green LED LD6 is lit in one of the following cases:

• Power switch (U16) is On and 32L4R9IDISCOVERY works as a USB host.

• VBUS is powered by another USB host when 32L4R9IDISCOVERY works as a USB device.

The red LED LD7 is lit in case of overcurrent.

10.13.1 32L4R9IDISCOVERY as USB device

The 32L4R9IDISCOVERY board may work as USB device on CN9 in any power source configuration. If the board is supplied by an external power source on CN9 (JP4 on (5)U5V), user must pay attention that power source delivers sufficient amount of current for the complete 32L4R9IDISCOVERY board setup. Refer to Section 10.6.1 for detailed configuration.

10.13.2 32L4R9IDISCOVERY as USB host

When the board works as a USB host on CN9, it supplies the 5 V to the USB peripheral using one of the following sources:

• ST-LINK/V2-1 USB Micro-B connector CN13 (jumper put in STLK or CHGR location of JP4)

• an external 5 V source connected to pin 5 of the Arduino™ Uno V3 connector CN16 (jumper put in ARD location of JP4)

• an external source between 6 V and 9 V, connected to VIN pin of Arduino™ Uno V3 connector CN16 (jumper put in E5V location of JP4)

The green LED LD8 is lit on to confirm the presence of the 5 V source.

The power switch STMPS2141STR is controlled by the port MFX_GPIO13 to deliver the 5 V power to the USB device connected to the USB connector CN9. When MFX_GPIO13 is pulled down to ground, the power switch is closed, and the green LED LD6 confirms the 5 V presence for the USB device. The red LED LD7 FAULT is lit when an over-current occurs.

For more details please refer to Section 10.6: Power supply.

Limitation: when the 32L4R9IDISCOVERY board is configured as a USB host, and if a USB High-power device is to be used on CN9, it may be necessary to change default JP4 setting to power the board from another Power source than (1) STLK or (9) CHGR. Please take care sufficient amount of current is available from this other power source and refer to Section 10.6.1 for detailed configuration.

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10.14 Octo-SPI Flash memory

A 512-Mbit Octo-SPI user Flash memory (MX25LM51245GXDI00 from MACRONIX) is connected to OCTOSPIM_P2 interface of STM32L4R9AI. By default, OCTOSPI_RESET of Flash memory has been connected to the general reset of 32L4R9IDISCOVERY.

See Appendix B: Solder bridges for possible Octo-SPI Flash configuration change.

Note: Limitation: the Octo-SPI Flash memory is not compatible with JP7 setting at +1V8.

10.15 Virtual COM port

The serial interface USART2 is directly available as a virtual COM port of the PC, connected to the ST-LINK/V2-1 USB connector CN13. Please check the application software settings related to virtual COM port.

10.16 Buttons and LEDs

The blue button B2 is a four-directions joystick with a selection mode when pressed in the center. The logic state is high when one of the five-position switch (left, right, up, down, selection) is pressed. The center position (Select function) is connected to a wake-up pin of the microcontroller PC13. The other four directions are mapped on MFX GPIOs.

The black button B1 near the display is the Reset button. It is used to reset the board and may wake-up MCU from standby and shutdown IDD measurement modes.

Two user LEDs located near the camera connector CN2 are available for the user (see Figure 4): LD1, LD2, from left to right, with orange and green color respectively. To light on a LED, a low logic state 0 must be written in the corresponding GPIO.

• LD1 (orange) is managed by MFX function

• LD2 (green) is managed by STM32L4R9AI main MCU

Other LEDs are present on the 32L4R9IDISCOVERY. Find below a summary list of all buttons and LEDs, with their description.

Table 11. LD1 and LD2 details

LED MCU port control color

LD1 PB0 (MFX_GPIO0 from MFX) Orange

LD2 PH4 (from main MCU) Green

Table 12. Buttons and LEDs

Reference Color Function Comment

B1 black RESET For MCU, OCTO-SPI Flash, MFX_V3, CAMERA


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B2 blue

SELECT with Wake-up alternate function, PC13

UP MFX_GPIO1, PB1

DOWN MFX_GPIO2, PB2

RIGHT MFX_GPIO3, PB3

LEFT MFX_GPIO4, PB4

LD1 orange USER1 MFX_GPIO0, PB0

LD2 green USER2 PH4

LD3 green ARDUINO PB13

LD4 red/green ST-LINK COM Green during communication

LD5 red ST-LINK USB FAULT Current higher than 625 mA

LD6 green VBUS USB OTG FS Status also available on PA9

LD7 red USB OTG FS OVCR Overcurrent detection, also on MFX_GPIO14, PB14

LD8 green 5V POWER Lit on to confirm +5V presence on board

Table 12. Buttons and LEDs (continued)

Reference Color Function Comment

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11 Connectors

11.1 Arduino™ Uno V3 connectors CN10, CN11, CN16 and CN17

CN10, CN11, CN16 and CN17 are female connectors compatible with Arduino™ Uno Revision 3 standard. Most of shields designed for Arduino™ Uno V3 fit to 32L4R9IDISCOVERY board.

Table 13. Arduino™ Uno V3 compatible connectors

Left connectors Right connectors

CN No.Pin No.

Pin Name

MCU Pin

Function FunctionMCU Pin

Pin Name

Pin No.

CN No.

-

-

I2C3_SCL PG7 D15 10

CN10

Digital

I2C3_SDA PG8 D14 9

AVDD - AVDD 8

Ground - GND 7

CN16

Power

1 - - E5V test SPI2_SCK PB13 D13 6

2 IOREF - VDD SPI2_MISO PB14 D12 5

3 NRST NRST ResetTIM3_CH2, SPI2_MOSI

PB15 D11 4

4 3V3 -3V3output

(note 1)TIM5_CH4, SPI2_NSS

PI0 D10 3

5 5V - 5Vinput/output TIM8_CH1N PH13 D9 2

6 GND - Ground - PH15 D8 1

7 GND - Ground -

8 VIN -+6V to +9V power input

(note 2)- PA4 D7 8

CN11

Digital

- TIM3_CH1 PB4 D6 7

CN17

Analog

1 A0 PA7 ADC1_IN12 TIM5_CH2 PA1 D5 6

2 A1 PC4 ADC1_IN13 - PG6 D4 5

3 A2 PC3 ADC1_IN4 TIM15_CH2 PF10 D3 4

4 A3 PB0 ADC1_IN15 - PG11 D2 3

5 A4PA0 or PG8

(note 3)

ADC1_IN5

or

I2C3_SDA

(note 3)

LPUART1_TX PC1 D1 2

6 A5PA5 or PG7

(note 3)

ADC1_IN10

or

I2C3_SCL (note 3)

LPUART1_RX PC0 D0 1

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1. The 3V3 on ARD connector PIN4 is not a power input for 32L4R9IDISCOVERY board, to simplify power architecture.

2. The external voltage applied to pin VIN should be in the range 6 to 9V at 25°C ambient temperature. If a higher voltage is applied on the regulator U15, it may overheat and could be damaged.

3. By default, pin 5 and pin 6 of CN17 connector are connected to ADC MCU input ports PA0 and PA5 respectively, thanks to configuration of solder bridges: SB33 and SB35 closed, SB32 and SB34 opened. In case it is necessary to connect I2C interface signals on pins 5 and 6 of CN17 instead of ADC inputs, open SB33 and SB35, and close SB32 and SB34.

Before using any Arduino™ Uno V3 Shield, it is important to refer to Section 10.6.1 for a correct configuration of JP4 and JP5. VREF+, the voltage reference used by the internal DAC and ADC of STM32L4R9AI, has three different power sourcing capabilities:

• from STM32L4R9AI MCU Internal buffer generation (Default). VREFBUF internal ADC / DAC voltage reference is set to 2.5V by default.

• from an external Arduino™ Uno V3 shield, connected to connector CN10. In that case, SB27 needs to be connected to bring AVDD on VREF+, a 100nF is necessary on C48 and VREFBUF needs to be de-activated.

• from a VDDA power supply generated on 32L4R9IDISCOVERY board. VDDA is also connected to VDDUSB of STM32L4R9AI. In that case, mounting a 0 ohm resistor on R14 is necessary. VREFBUF needs to be de-activated. A jumper JP3 also needs to be set as below description.

Warning: When VDDA=VDD_MCU and if VDD_MCU=1.8 V (check JP7 setting), there is huge leakage current and a risk of damaging MCU I/Os in case 3.3 V logic level is connected to ADC input I/Os of STM32L4R9AI. Also, ADC measurements is not functional in default configuration

Caution: The I/Os of STM32 microcontroller are 3V3 compatible instead of 5 V for Arduino™ Uno V3.

Note: Limitation: the Arduino™ Uno V3 is not compatible with JP7 setting at +1V8.

See Appendix B: Solder bridges for possible Arduino™ Uno V3 configuration change.

Table 14. JP3, VDDA and VDDUSB, settings


JP3 VDDA Setting

Default setting.

Jumper on PIN1/2, VDDA get power from +3V3

Jumper on PIN2/3, VDDA get power form VDD_MCU

(See warning below)

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11.2 DSI display, backlight and touch panel connector CN4

All the necessary signals to interface with round DSI display board are available through the DSI V3 connector CN4.

Figure 10. DSI display connector CN4

Table 15. DSI display connector CN4

Function GPIO port Signal nameCN6 pin number

Signal name GPIO port Function

General ground - GND 1 2 NC - -

Differential DSI clock

- DSI_CK_P 3 4 TOUCH_INT MFX_GPIO9Touch panel

interrupt

Differential DSI clock

- DSI_CK_N 5 6 GND -General ground

reference

General ground - GND 7 8 DSI_D2_P -Not

connected

Differential DSI data 0

- DSI_D0_P 9 10 DSI_D2_N -Not

connected

- DSI_D0_N 11 12 GND -General ground

General ground - GND 13 14 DSI_D3_P -Not

connected

Differential DSI data 1

- DSI_D1_P 15 16 DSI_D3_N -Not

connected

- DSI_D1_N 17 18 GND -General ground

General ground - GND 19 20 NC - -

Power output - +5v 21 22 SPI_CS PH14SPI chip

select

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See Appendix B: Solder bridges for possible DSI display configuration change.

Power output - +5v 23 24 SPI2_SCK PB13 SPI clock

- - NC 25 26 SPI2_MOSIp PB15 SPI data

SM3321 ground - BLGND 27 28 SPI_DCX PB14SPI

data/control

SM3321 ground - BLGND 29 30 NC - -

- - NC 31 32 RESERVED - -

- - NC 33 34 NC - -

- - NC 35 36 3V3 -3V3 voltage reference

- - NC 37 38 VDDIO -IOVDD

reference

- - NC 39 40 I2C1_SDA PG13Touch panel

I2C data

- - NC 41 42 NC - -

DSI_SWIRE control output

PA8 DSI_SWIRE 43 44 I2C1_SCL PB6Touch panel

I2C clock

- - NC 45 46 NC - -

- - NC 47 48 NC - -

DSI tearing effect input

PF11 TE 49 50 NC - -

- - NC 51 52 NC - -

DSI Backlight control output

PB1 DSI_BL_CTRL 53 54 NC - -

- - NC 55 56 NC - -

DSI and Touch panel Reset

output

MFX_

GPIO10DSI_RESET 57 58 NC - -

- - NC 59 60 1V8 -1.8V voltage

reference

General ground - GND 61 62 GND -General ground

General ground - GND 63 64 GND -General ground

Table 15. DSI display connector CN4 (continued)

Function GPIO port Signal nameCN6 pin number

Signal name GPIO port Function

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11.2.1 DSI AMOLED display

Warning: Permanent image sticking may occur if AMOLED displays same image for an extended period of time.

The DSI display is based on a round AMOLED Touch sensitive panel of 1.2 inch and 390x390 pixels. The display module reference is IEG1120TB103GF-001 from Govisionox Optoelectronics. It displays up to 16M colors. The round DSI display module board reference is MB1314. The DSI interface of MB1314 is only one data-lane width and a clock lane, but the 32L4R9IDISCOVERY board supports DSI displays with up to two data-lane width. The DSI_V3 connector interface also enables the use of dedicated low power modes of display, thanks to the available SPI2 interface (MB1314 does not use it). It is also possible to use some of USART3 signals to control a low power mode (SB6 and SB8 are respectively exclusive with SB13 and SB7).

The DSI_TE signal PF11 is used as an input of the main microcontroller connected to the display signal TE (tearing effect). DSI_TE signal is used to synchronize the refresh of the display memory by the microcontroller with the display scan, this to avoid visible artefacts.

DSI_3V3_PWRON signal (MFX_GPIO8, low level active) controls the 3V3 level power supplies provided on the DSI_V3 connector interface. DSI_1V8_PWRON signal (MFX_aGPIO2) controls the 1V8 level power supplies provided on the DSI_V3 connector interface. Both must be used to enable or disable display, TP and PSRAM. They allows to disconnect those peripherals when doing low power IDD measurement.

DSI_RESET signal (MFX_GPIO10, low level active) controls the reset for the display and the Touch panel.

An optional DSI_SWIRE signal PA8 offers additional possibility to control the voltage for any display supply during initialization (not used by MB1314 by default). PA8 is exclusive with another function from 32L4R9IDISCOVERY board: CAMERA clock Interface (MCO), which is the default setting.

11.2.2 Backlight and OLED power supplies generation

This function is handled by the power driver circuit SM3321, included on the MB1314 DSI display Board. SM3321 is a switching mode boost converter supplied by the 3V3 rail of the DSI_V3 connector interface. SM3321 is controlled either by the AMOLED driver circuit itself (default configuration), either by DSI_BL_CTRL (PB1) from main MCU, either from the DSI_SWIRE (PA8) interface from main MCU. SM3321 provides all necessary voltage references to AMOLED display.

If used, the signal DSI_BL_CTRL switches on the backlight with a high level. It is possible to dim the backlight intensity by applying a low frequency PWM signal to DSI_BL_CTRL (1 to 10 kHz typically).

11.2.3 Touch panel

The touch panel is a capacitive touch panel using an I2C interface. The touch panel IC reference is FT3267, and is located on the MB1314 board. The FT3267 I2C1 default addresses are 0x71 and 0x70.

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Touch panel interrupt output DSI_TOUCH_INT is connected to MFX_GPIO9. It is used as touch panel detection indication. MFX_GPIO10 resets capacitive touch panel and DSI display.

11.3 USB OTG FS connector CN9

An USB OTG full speed communication link is available at USB Micro AB receptacle connector CN9. Micro AB receptacle enables USB host and USB Device features.

MFX_GPIO13 is used to enable on-board VBUS power when in host mode.

Limitation: when the 32L4R9IDISCOVERY board is configured as a USB host, and if a USB High-power device is to be used on CN9, it may be necessary to change default JP4 setting to power the board from another Power source than (1) STLK or (9) CHGR. Please take care sufficient amount of current is available from this other Power source and refer to Section 10.6.1 for detailed configuration.

Figure 11. USB OTG FS Micro-AB connector CN9

Table 16. USB OTG FS Micro-AB connector CN9

Pin number Description Pin number Description

1 VBUS (PA9) 4 ID (PA10)

2 DM (PA11) 5 GND

3 DP (PA12) - -

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11.4 ST-LINK/V2-1 USB Micro-B connector CN13

The USB connector CN13 is used to connect the embedded ST-LINK/V2-1 to the PC.

Figure 12. USB Micro-B connector CN13

11.5 microSD card connector CN6

microSD cards with 4 Gbytes or more capacity are inserted in the receptacle CN6. Four data bits of the SDMMC1 interface, CLK and CMD signals of the STM32L4R9AI are used to communicate with the microSD card at +3V3 only. The card insertion is detected by the MFX_GPIO5: when a microSD card is inserted, the logic level is 0, otherwise it is 1.

Table 17. USB Micro-B connector CN13


1 VBUS (power) 4 GND

2 DM 5,6 Shield

3 DP - -

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Figure 13. microSD connector CN6 (top view)

Note: Limitation: the microSD is not compatible with JP7 setting at +1V8.

11.6 STMod+ connector CN1

The standard 20-pin STMod+ connector is available on 32L4R9IDISCOVERY board to increase compatibility with external boards and modules from the Ecosystem of microcontrollers. By default, it is designed to support an ST dedicated Fanout board which allows connecting different modules or board extensions from different manufacturers. Fanout board also embeds a 3V3 regulator and I2C level shifters. Schematics of Fanout board is available in Figure 35.: Fanout board (MB1280). For more detailed information,

Table 18. microSD connector CN6

Pin number

DescriptionPin

numberDescription

1 SDMMC1_D2 (PC10) 6 GND

2 SDMMC1_D3 (PC11) 7 SDMMC1_D0 (PC8)

3 SDMMC1_CMD (PD2) 8 SDMMC1_D1 (PC9)

4 VDD (+3V3) 9 µSD_DETECT (MFX_GPIO5)

5 SDMMC1_CLK (PC12) 10-11-12 GND (casing)

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please refer to ST Fanout board user manual and to relevant datasheets of associated modules.

For details about STMod+ interface, please refer to STMod+ connector interface specification.

Figure 14. STMod+ connector CN1

In order to be able to support selection of SPI or UART functions connection on STMod+ by software, a quad SPDT switch has been added. It is controlled by two GPIOs from MFX circuit and enables MCU signal selection for pins 2, 3 and 4. By default, STMod+ connector is selected, and STMOD+_SEL_0 and STMOD+_SEL_1 of MFX circuit are set to support one of the STMod+ interface configuration.

Table 19. STMod+ connector CN1

Pin number

DescriptionPin

numberDescription

1 SPI2_CS/USART3_CTS (PA6) 11 INT (PC6)

2 SPI2_MOSIp/USART3_TXD (PB15/PB10) 12 RST (PI7)

3 SPI2_MISOp/USART3_RXD (PB14/PB11) 13 ADC (PA4)

4 SPI2_SCK/USART3_RTS (PB13/PA15) 14 PWM (PA5)

5 GND 15 +5V

6 +5V 16 GND

7 I2C3_SCL (PG7) 17 GPIO (PB12)

8 SPI2_MOSIs (PI3) 18 GPIO (PC2)

9 SPI2_MISOs (PI2) 19 GPIO (PC7)

10 I2C3_SDA (PG8) 20 GPIO (PC2)

Table 20. Quad SPDT switch configuration

Pin number SPI UART / SPI (1) UART

STMOD+_SEL_0 (GPIO6 of MFX_V3) 0 1 1

STMOD+_SEL_1 (GPIO7 of MFX_V3) 0 0 1

STMod+ pin 1 (directly connected to PA6) SPI_CS SPI_CS USART3_CTS

STMod+ pin 2 SPI2_MOSIp USART3_TX USART3_TX

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Please, take care that this connector shares many GPIOs with other functions on the Board: for more detailed information please refer to Appendix A: GPIO assignment and sharing.

In addition, to have a quick look at STMod+ GPIO sharing and multiplexing, and to get a quick view on other Alternate functions available on its pins, please refer to Appendix C: STMod+ GPIO sharing and multiplexing.

Note: Limitation: The STMod+ interface is not compatible with JP7 setting at +1V8.

Note: Limitation: if STMod+ pin 17 is used, please take care to disconnect SB1 first. If STMod+ pin 18/20 is used, please activate MIC_VDD GPIO (PH2) at high level first.

11.7 PMOD connector CN3

The standard 12-pin PMOD connector is available on STM32L4R9I-DISCO Discovery board to support low frequency, low I/O pin count peripheral modules. The PMOD interface which has been implemented on STM32L4R9I-DISCO Discovery board is compatible with the PMOD type 2A & 4A I/O signal assignment convention.

Figure 15. PMOD connector CN3

STMod+ pin 3 SPI2_MISOp USART3_RX USART3_RX

STMod+ pin 4 SPI2_SCK SPI2_SCK USART3_RTS

1. UART / SPI defines default configuration for STMOD+_SEL_0 and STMOD+_SEL_1.

Table 20. Quad SPDT switch configuration (continued)

Pin number SPI UART / SPI (1) UART

Table 21. PMOD connector CN3


1 SPI2_CS/USART3_CTS (PA6) 7 INT (PC6)

2 SPI2_MOSIp/USART3_TXD (PB15/PB10) 8 RESET (PI7)

3 SPI2_MISOp/USART3_RXD (PB14/PB11) 9 NA

4 SPI2_SCK/USART3_RTS (PB13/PA15) 10 NA

5 GND 11 GND

6 3V3 12 3V3

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In order to be able to support selection of SPI or UART functions connection on PMOD by software, a quad SPDT switch has been added on board. It is controlled by two GPIOs from MFX_V3 circuit and enables MCU signal choice for pins 2, 3 and 4: refer to Table 20 STMod+ chapter for switch description details (pin 1, 2, 3 and 4 of PMOD are common with STMod+).

By default, STMod+ connector is selected, so STMOD+_SEL_0 and STMOD+_SEL_1 needs to be modified to support one of the PMOD interface configuration. Also, PMOD shares GPIOs with other functions of the Board: for more detailed information please refer to Appendix A: GPIO assignment and sharing.

Note: Limitation: the PMOD interface is not compatible with JP7 setting at +1V8.

11.8 Camera module connector CN2

An 8-bit camera module function is supported thanks to the 30-pin dedicated ZIF connector CN2. The reference of camera module to be used is STM32F4DIS-CAM. This module has to be connected with caution before powering on the STM32L4R9I-DISCO Discovery board. The camera module I²C addresses are 0x61 and 0x60. Camera is usable by default, but one might take care about GPIO sharing and multiplexing with other function, in order to program the good configuration. For more detailed information please refer to Appendix A: GPIO assignment and sharing.

Note: Limitation: the camera is not compatible with JP7 setting at +1V8.

Figure 16. Camera module connector CN2

Table 22. Camera module connector CN2


1 GND 16 GND

2 NC 17 DCMI_HSYNC (PA4)

3 NC 18 NC

4 DCMI_D0 (PC6) 19 DCMI_VSYNC (PI5)

5 DCMI_D1 (PC7) 20 VDD

6 DCMI_D2 (PH11) 21 DCMI_CLK (PA8)

7 DCMI_D3 (PH12) 22 NC

8 DCMI_D4 (PE4) 23 GND

9 DCMI_D5 (PI4) 24 NC

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11.9 TAG connector CN8

The TAG connector footprint CN8 is used to connect STM32L4R9AI microcontroller for programming or debugging the board.

Figure 17. TAG connector CN8

11.10 SWD header CN5

The 6-pin SWD header is used to program or debug an MCU in an external application board using a dedicated cable connected to it. To use this SWD header interface, pins 2 and 3 of JP10 need to be connected with a jumper. Furthermore, SW1 must be set in OFF position while R24 and R31 need to be disconnected.

By default, STLINK/V2-1 is used to program or debug on board MCU. Pin1 and 2 of JP10 are connected, SW1 is in ON position, R24 and R31 are connected.

10 DCMI_D6 (PB8) 25 DCMI_PWR_EN (MFX_GPIO12)

11 DCMI_D7 (PI7) 26 DCMI_NRST (NRST from MCU)

12 NC 27 I2C1_SDA (PG13)

13 NC 28 I2C1_SCL (PB6)

14 GND 29 GND

15 DCMI_PIXCK (PH5) 30 VDD

Table 22. Camera module connector CN2 (continued)


Table 23. TAG connector CN8


1 VDD 10 NRST (PH3, RESET#)

2 SWDIO (PA13) 9 NA

3 GND 8 NA

4 SWCLK (PA14) 7 NA

5 GND 6 SWO (PB3)

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11.11 EXT_I2C connector CN7

The EXT_I2C connector socket is used to connect external modules to I2C1 interface or to monitor the I2C1 interface.

Figure 18. EXT_I2C connector CN7

As I2C1 is available for external use, it is important to note that those following I2C1 applications and addresses are already used on board:

Depending on the I2C module plugged into CN7, I2C1 could even be used up to Fast mode + (1 MHz) if Audio Codec is set to OFF mode with AUDIO_RST Low.

Table 24. SWD header CN5


1 VDD 4 SWDIO (PA13)

2 SWCLK (PA14) 5 NRST

3 GND 6 SWO (PB3)

Table 25. EXT_I2C connector CN7


1 I2C1_SDA (PG13) 5 +3V3

2 NC 6 NC

3 I2C1_SCL (PB6) 7 GND

4 EXT_RESET (MFX_GPIO11) 8 NC

Table 26. I2C1 addresses (on board)

ApplicationR/W I2C address

I2C max. speed Comment

DSI display Touch Panel 0x71/0x70 400 kHz Default I2C address

Audio Codec 0x95/0x94 100 kHz Default I2C address

CAMERA 0x61/0x60 400 kHz For STM32F4DIS-CAM Module

MFX_V3 0x85/0x84 400 kHz Default I2C address

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11.12 Stereo headset and headphone jack CN12

A stereo headphone or a stereo headset with analog microphone is pluggable into the 3.5 mm standard jack socket CN12.

Figure 19. Stereo headset with microphone jack CN12

If a headset is plugged into CN12, the bias of the microphone is driven by the output MICBIAS1 of the codec and the analog audio enters into the codec by the pin AIN3A.

Table 27. Audio jack connector CN12

Pin number Description Stereo headset with microphone pinning

6 OUT_Left SPK_L (32 ohms typ.)

4 OUT_Right SPK_R (32 ohms typ.)

3 GND GND

2 IN_Analog Microphone

5 NCNA

1 NC

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Appendix A GPIO assignment and sharing

Table 28. 32L4R9IDISCOVERY GPIO assignment and sharing

Pin GPIO port GPIO primary interface STMod+ interface PMOD interface ARDUINO interface

K3 PA0 - - - ARD_A4 (ADC1_IN5)

M1 PA1 - - - ARD_D5 (TIM5_CH2)

N1 PA2 STLINK_USART2_TX - - -

M2 PA3 STLINK_USART2_RX - - -

N2 PA4 DCMI_HSYNC/DE STMod+_ADC (ADC_1_IN9) - ARD_D7

L3 PA5 - STMod+_PWM (TIM2_CH1) - ARD_A5 (ADC1_IN10)

L4 PA6 -STMod+_SPI2_CS //

STMod+_USART3_CTS (NU)

PMOD_SPI2_CS // PMOD_USART3_CTS

(NU)-

M4 PA7 - - - ARD_A0 (ADC1_IN12)

E11 PA8DCMI_CLK (MC0) //

DSI_SWIRE (NU) - - -

E12 PA9 VBUS - - -

D11 PA10 ID - - -

E13 PA11 DM - - -

D13 PA12 DP - - -

A11 PA13 JTMS/SWDIO - - -

A10 PA14 JTCK/SWCLK - - -

A9 PA15 - STMod+_USART3_RTS (NU) PMOD_USART3_RTS (NU) -

N4 PB0 DSI_USART3_CK (NU) - - ARD_A3 (ADC1_IN15)

L5 PB1DSI_BL_CTRL (NU) //

DSI_SWIRE (NU) - - -

N5 PB2 MFX_WAKEUP_OUT - - -

GP

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7D

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A6 PB3 JTDO/TRACESWO - - -

A5 PB4 - - - ARD_D6 (TIM3_CH1)

B5 PB5 SAI1_SD_B - - -

C5 PB6 I2C1_SCL - - -

D5 PB7 PSRAM_NL (ADV) - - -

C4 PB8 DCMI_D6 - - -

D4 PB9 SAI1_FS_A - - -

N9 PB10 DSI_USART3_TX (NU) STMod+_USART3_TX PMOD_USART3_TX -

H7 PB11 - STMod+_USART3_RX PMOD_USART3_RX -

N12 PB12 DFSDM_1_DATIN1 STMod+_GPIO (NU) - -

N13 PB13 DSI_SPI2_SCK (NU) STMod+_SPI2_SCK PMOD_SPI2_SCK ARD_D13 (SPI2_SCK)

M12 PB14 DSI_SPI_D/CX (NU) STMod+_SPI2_MISOp (NU) PMOD_SPI2_MISO (NU) ARD_D12 (SPI2_MISO)

L10 PB15 DSI_SPI2_MOSI (NU) STMod+_SPI2_MOSIp (NU) PMOD_SPI2_MOSI (NU) ARD_D11 (SPI2_MOSI_TIM3_CH2)

J2 PC0 - - - ARD_D0 (LPUART1_RX)

J3 PC1 - - - ARD_D1 (LPUART1_TX)

J4 PC2 DFSDM_1_CKOUT STMod+_GPIO (NU) - -

K1 PC3 - - - ARD_A2 (ADC1_IN4)

K4 PC4 - - - ARD_A1 (ADC1_IN13)

F11 PC6 DCMI_D0 STMod+_INT PMOD_INT -

G11 PC7 DCMI_D1 STMod+_GPIO - -

F9 PC8 SDMMC_1_D0 - - -

G13 PC9 SDMMC_1_D1 - - -

D9 PC10 SDMMC_1_D2 - - -

E9 PC11 SDMMC_1_D3 - - -

F8 PC12 SDMMC_1_CK - - -

Table 28. 32L4R9IDISCOVERY GPIO assignment and sharing (continued)


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E1 PC13 JOY_SEL // WAKEUP - - -

F1 PC14-OSC32_IN PC14-OSC32_IN - - -

G1PC15-

OSC32_OUTPC15-OSC32_OUT - - -

B8 PD0 PSRAM_D2 - - -

C8 PD1 PSRAM_D3 - - -

D8 PD2 SDMMC_1_CMD - - -

E8 PD3 PSRAM_CLK - - -

C7 PD4 PSRAM_NOE - - -

D7 PD5 PSRAM_NWE - - -

E7 PD6 PSRAM_NWAIT - - -

F7 PD7 PSRAM_NE1 - - -

K10 PD8 PSRAM_D13 - - -

K9 PD9 PSRAM_D14 - - -

J10 PD10 PSRAM_D15 - - -

J9 PD11 PSRAM_A16 - - -

J8 PD12 PSRAM_A17 - - -

H8 PD13 PSRAM_A18 - - -

H11 PD14 PSRAM_D0 - - -

H10 PD15 PSRAM_D1 - - -

A4 PE0 PSRAM_NBL0 - - -

B4 PE1 PSRAM_NBL1 - - -

D3 PE2 SAI1_MCLK_A - - -

D2 PE3 PSRAM_A19 - - -

D1 PE4 DCMI_D4 // PSRAM_A20 (NU) - - -



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E4 PE5 SAI1_SCK_A - - -

E3 PE6 SAI1_SD_A - - -

L7 PE7 PSRAM_D4 - - -

K6 PE8 PSRAM_D5 - - -

J6 PE9 PSRAM_D6 - - -

H6 PE10 PSRAM_D7 - - -

N8 PE11 PSRAM_D8 - - -

M8 PE12 PSRAM_D9 - - -

L8 PE13 PSRAM_D10 - - -

K7 PE14 PSRAM_D11 - - -

J7 PE15 PSRAM_D12 - - -

F5 PF0 PSRAM_A0 - - -



G3 PF3 PSRAM_A3 - - -



H4 PF10 - - - ARD_D3 (TIM15_CH2)

M5 PF11 DSI_TE - - -

N6 PF12 PSRAM_A6 - - -

M6 PF13 PSRAM_A7 - - -

L6 PF14 PSRAM_A8 - - -

K5 PF15 PSRAM_A9 - - -

J5 PG0 PSRAM_A10 - - -

H5 PG1 PSRAM_A11 - - -



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H9 PG2 PSRAM_A12 - - -

G8 PG3 PSRAM_A13 - - -



G12 PG6 - - - ARD_D4

G10 PG7 - STMod+_I2C3_SCL - ARD_D15 (I2C3_SCL)

F10 PG8 - STMod+_I2C3_SDA - ARD_D14 (I2C3_SDA)

B7 PG9 OCTOSPIM_P2_IO6 - - -

D6 PG10 OCTOSPIM_P2_IO7 - - -

E6 PG11 - - - ARD_D2

F6 PG12 OCTOSPIM_P2_NCS - - -

G6 PG13 I2C1_SDA - - -

C6 PG15 OCTOSPIM_P2_DQS - - -

H1 PH0-OSC_IN PH0-OSC_IN - - -

J1 PH1-OSC_OUT PH1-OSC_OUT - - -

A2 PH2 MIC_VDD - - -

E5 PH3-BOOT0 PH3-BOOT0 - - -

K8 PH4 LED_GREEN - - -

L9 PH5 DCMI_PIXCLK/PDCK - - -

N10 PH8 OCTOSPIM_P2_IO3 - - -

C11 PH9 OCTOSPIM_P2_IO4 - - -

M9 PH10 OCTOSPIM_P2_IO5 - - -

M10 PH11 DCMI_D2 - - -

B13 PH12 DCMI_D3 - - -

C9 PH13 - - - ARD_D9 (TIM8_CH1N)



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A13 PH14 DSI_SPI_USART_CS (NU) - - -

B12 PH15 - - - ARD_D8

A12 PI0 - - - ARD_D10 (SPI2_NSS_TIM5_CH4)

B11 PI1 MFX_INT_IN - - -

B10 PI2 - STMod+_SPI2_MISOs - -

C10 PI3 - STMod+_SPI2_MOSIs - -

D10 PI4 DCMI_D5 - - -

E10 PI5 DCMI_VSYNC/RDY - - -

B9 PI6 OCTOSPIM_P2_CLK - - -

B2 PI7 DCMI_D7 STMod+_RST PMOD_RST -

B1 PI9 OCTOSPIM_P2_IO2 - - -

A1 PI10 OCTOSPIM_P2_IO1 - - -

C3 PI11 OCTOSPIM_P2_IO0 - - -

Legend:

or = Indicate shared or exclusive functions or interfaces on a GPIO port

(NU) = Function mode which is not usable by default

// = Highlights two exclusive functions available for one interface

(xxx) = Name of the STM32L4R9AI GPIO Alternate function used on this interface



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Table 29. MFX_V3 GPIO assignment (LQFP48)

Pin GPIO port Implemented functions Application function name

10 PA0-WKUP - -

11 PA1 MFX_aGPIO1 MFX_aGPIO1

12 PA2 MFX_aGPIO2 DSI_1V8_PWRON

13 PA3 - -

14 PA4 Reserved DAC_Out1 SPARE

15 PA5 MFX_GPIO5 µSD_DETECT

16 PA6 MFX_GPIO6 STMOD+_SEL_0

17 PA7 MFX_GPIO7 STMOD+_SEL_1

29 PA8 MFX_GPIO8 DSI_3V3_PWRON

30 PA9 MFX_GPIO9 DSI_TOUCH_INT

31 PA10 MFX_GPIO10 DSI_RESET

32 PA11 MFX_GPIO11 EXT_RESET

33 PA12 MFX_GPIO12 DCMI_PWR_EN

34 PA13 MFX_SWDIO MFX_SWDIO

37 PA14 MFX_SWCLK MFX_SWCLK

38 PA15 MFX_IDD_SH3 SH3

18 PB0 MFX_GPIO0 LED_ORANGE

19 PB1 MFX_GPIO1 JOY_UP

20 PB2 MFX_GPIO2 JOY_DOWN

39 PB3 MFX_GPIO3 JOY_RIGHT

40 PB4 MFX_GPIO4 JOY_LEFT

41 PB5 MFX_IDD_VDD_MCU IDD_VDD_MCU

42 PB6 MFX_I2C_SCL I2C1_SCL from main MCU

43 PB7 MFX_I2C_SDA I2C1_SDA from main MCU

45 PB8 MFX_I2C_ADDR I2C_ADDR (external pull-down)

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46 PB9 MFX_IRQ_OUT MFX_IRQ_OUT

21 PB10 - -

22 PB11 - -

25 PB12 MFX_IDD_MEAS IDD_MEAS

26 PB13 MFX_GPIO13 USB_OTGFS_PPWR_EN

27 PB14 MFX_GPIO14 USB_OVER

28 PB15 MFX_GPIO15 AUDIO_Codec_RESET

2 PC13-ANTI_TAMP MFX_WAKEUP MFX_WAKEUP

3 PC14-OSC32_IN MFX_IDD_CAL CAL

4 PC15-OSC32_OUT MFX_IDD_SH0 SH0

5 PH0-OSC_IN MFX_IDD_SH1 SH1

6 PH1-OSC_OUT MFX_IDD_SH2 SH2

Table 29. MFX_V3 GPIO assignment (LQFP48) (continued)

Pin GPIO port Implemented functions Application function name

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Appendix B Solder bridges

Following Table 30 describes each solder bridge. The default state is indicated in bold. ON state means a 0 ohm resistor is soldered. OFF state means SBxx is open.

Table 30. 32L4R9IDISCOVERY solder bridges

Solder bridges State Description

SB2 (ARD_D13 Green LED)ON Enables ARD Green LED control by ARD_D13

OFF Disables ARD Green LED

SB27 (ARD_AVDD on VREF+)ON Connects VREF+ from MCU to ARD_AVDD

OFF ARD_AVDD not connected

SB32, SB34 (I2C3 on ARD_A4/A5) OFF I2C3 disconnected from ARD_A4/A5, exclusive with SB33, SB35

SB33, SB35 (ADCs on ARD_A4/A5) ON ADCs inputs connected to ARD_A4/A5, exclusive with SB32, SB34

SB7, SB13 (USART3 on DSI display) OFF Disconnects USART3_CK/TX from pins 24/26 of DSI V3 connector, exclusive with SB6 and SB8

SB6, SB8 (SPI2 on DSI display) ON Connects SPI2_SCK/MOSI to pins 24/26 of DSI V3 connector, exclusive with SB7 and SB13

SB23 (VDD on OCTOSPI Flash)ON Connects OCTOSPI Flash power rails to VDD

OFF Disconnects VDD from OCTOSPI Flash

SB25 (OCTOSPI_ECS)ON ECS function active (need external pull-up)

OFF ECS function not active (no external pull-up)

SB24 (OCTOSPI_RESET)ON OCTOSPI Flash Reset is connected to General Reset of Board

OFF OCTOSPI Flash Reset not connected to General Reset of Board

SB1 (DFSDM_1_DATIN1)ON PB12 (DFSDM_1_DATIN1) is connected to Digital Microphones by default

OFF PB12 (DFSDM_1_DATIN1) is usable by STMod+ on pin 17

SB3 (RESERVED) ON Reserved, but removable if necessary (PSRAM_A20 to U6)

SB4 (RESERVED) OFF Reserved, do not modify (PSRAM_A20 to VDD)

SB16, SB17, SB18, SB19, SB20, SB21 (RESERVED)

OFF Reserved, (STMod+/PMOD)

SB36 (RESERVED) OFF Reserved, (STLINK)

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SB5 (RESERVED) ON Reserved, do not modify (PSRAM)

SB14 (RESERVED) ON Reserved, do not modify (STLINK)

SB9, SB10, SB11, SB12

(RESERVED)ON Reserved, do not modify (display)

SB15 (RESERVED) ON Reserved, (USB OTG FS)

SB30 (RESERVED) ON Reserved, (Audio Codec VL)

SB29 (RESERVED) ON Reserved, (Audio Codec VD)

SB31 (RESERVED) ON Reserved, do not modify (MFX, IDD_VDD_MCU)

SB22 (RESERVED) ON Reserved, do not modify (STMod+/PMOD)

SB26 (RESERVED) ON Reserved, (OCTOSPI Flash)

SB37 (RESERVED) ON Reserved, (EXT_I2C)

SB28 (RESERVED) OFF Reserved, (MCO to HSE input)

SB38 (RESERVED) ON Reserved, (for U5 PSRAM)

SB39 (RESERVED) OFF Reserved, (for U6 PSRAM)

Table 30. 32L4R9IDISCOVERY solder bridges (continued)

Solder bridges State Description

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Appendix C STMod+ GPIO sharing and multiplexing

Table 31. STMod+ GPIO sharing and multiplexing

Shared or exclusive functions STMod+(1) Shared or exclusive functions

DSI ARD PMOD Some other Alternate Functions(2) Basic SB(3) Port Pins Port SB Basic Some other Alternate Functions(2) PMOD ARD CAMDigMic

- -CTSS3 /

CSN2LCTS1 / T3.1 / T16.1 / [OP2_I+ / AD1.11]

CTSS3 / CSN2

- PA6 1

-

11 PC6 - INT SA2.MCKA / DF1.C3 / T3.1 / T8.1 INT - D0 -

TXS3MOSI2 MOSI2/T15.2

TXS3MOSI2

LRX1 / T2.3 / SCL2 / SCL4 / DF1.D7 / [CP1_O]DF1.C2 / T1.3N / T8.3N / T15.2 / SA2.SDA / RTC_RFIN

TXS3MOSI2

2021

PB10PB15

2 12 PI7 - RST T8.3 RST - D7 -

DC/X MISO2RXS3MISO2

SDA2 / SDA4 / LTX1 / DF1.C7 / T2.4 / [CP2.O]SA2.MCKA / SDA2 / RTSS3 / DF1.D2 / T1.2N / T8.2N / T15.1

RXS3MISO2

1617

PB11PB14

3 13 PA4 - ADC LT2.O / [AD1.9 / DAC1.1] - D7 HSYNC -

SCK2 SCK2RTSS3SCK2

SA2.FSB / RXS2 / RTS4 / T2.1 / T2.ESCL2 / CTSS3 / LCTS1 / DF1.C1 / T1.1N / T15.1N / TXC2 / SA2.SCKA

RTSS3SCK2

1819

PA15PB13

4 14 PA5 - PWM SCK1 / T2.1 / T8.1N / [AD1.10 / DAC1.2] - A5 - -

- - - - GND - GND 5 15 +5V - +5V - - - - -

- - - - +5V - +5V 6 16 GND - GND - - - - -

- SCL3 - DF1.CO / LTX1 SCL3 - PG7 7 17 PB12 - GPIONSS2 / SA2.FSA / SMBA2 / CKS3 / LRTS1 / RXC2 /

DF1.D1- - - DF1.D1

- - - T8.E MOSI2 - PI3 8 18 PC2* - GPIO DF1.CO / MISO2 / LT1.2 / [AD1.3] - - - DF1.CO

- - - T8.4 MISO2 - PI2 9 19 PC7 - GPIO T3.2 / T8.2 / DF1.D3 - - D1 -

- SDA3 - LRX1 SDA3 - PG8 10 20 PC2* - GPIO same as pin 18 - - - DF1.CO

Legend:

= DSI = Arduino Uno = Pmod = Alternate Functions = STMod+ = CAM = Digital Microphone = Supply = GND

1. This Table 31 gives description of the signals available on the STMod+ connector It also shows which signal is shared with other board connector or function In some boards, Solder bridges (SB) are present to manually select which function is wired by default (but here, please refer to point (3) below) Analog signals are in brackets [xxx] The I2C bus on pins 7 / 10 might be shared with built-in discovery slave devices. Please check the slave address of your device when adding it to the bus.

2. RTSS3 stands for USART3_RTS AD1.3 stands for ADC_1_IN3 T1.3N stands for TIM_1_CH3N DAC1.1 stands for DAC_1_OUT1 MOSI2 stands for SPI2_MOSI RST stands for RESET INT stands for INTERRUPT DF1.C3 stands for DFSM1_CKIN3 SDA3 stands for I2C3_SDA LTX1 stands for LP_UART1TX LT2.O stands for LPTIM2_OUT NSS2 stands for SPI2_NSS RXC1 stands for CAN_1_RX SA2.SCKA stands for SAI2_SCLK_A

3. The solder bridges (SB) are available on PCB to select chosen Port, but they are not used by default: Instead of SB, an embedded SPDT quad switch is used to select Port. It is controlled by 2 GPIOs from the MFX_V3 Expander (STMOD+_SEL_0 and _1), please see Table 32 description below (Bold text is default configuration to support MikroBUS modules using MB1280 fan-out board)

STMod+ GPIO sharing and multiplexing UM2271

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Table 32. SPDT quad switch

SPI UART / SPI UART

STMOD+_SEL_0 0 1 1 STMOD+_SEL_0 is GPIO6 of MFX_V3

STMOD+_SEL_1 0 0 1 STMOD+_SEL_1 is GPIO7 of MFX_V3

pin 1 CSN2 CSN2 CTS3 pin 1 is connected directly to PA6

pin 2 MOSI2 TXS3 TXS3

pin 3 MISO2 RXS3 RXS3

pin 4 SCK2 SCK2 RTSS3

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UM2271 Schematics

76

Appendix D Schematics

This section provides design schematics for the 32L4R9IDISCOVERY board and design schematics of the round DSI display and Fanout boards:

Appendix D contains the schematics diagrams listed below:

• Figure 20: 32L4R9IDISCOVERY board interconnections (MB1311C)

• Figure 21: 32L4R9IDISCOVERY power

• Figure 22: 32L4R9IDISCOVERY Arduino™ Uno V3 connectors

• Figure 23: 32L4R9IDISCOVERY ST-LINK/V2-1

• Figure 24: 32L4R9IDISCOVERY Octo-SPI Flash memory

• Figure 25: 32L4R9IDISCOVERY peripherals

• Figure 26: 32L4R9IDISCOVERY USB OTG FS

• Figure 27: 32L4R9IDISCOVERY Round DSI display interface

• Figure 28: 32L4R9IDISCOVERY IDD measurement and Multi Function eXpander

• Figure 29: 32L4R9IDISCOVERY microcontroller

• Figure 30: 32L4R9IDISCOVERY PSRAM

• Figure 31: 32L4R9IDISCOVERY camera

• Figure 32: 32L4R9IDISCOVERY STMOD+ interface

• Figure 33: 32L4R9IDISCOVERY Audio and DFSDM

• Figure 34: Round DSI display board (MB1314)

• Figure 35: Fanout board (MB1280)

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Figure 20. 32L4R9IDISCOVERY board interconnections (MB1311C)

1 14

MB1311-TOP

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A3 Revision:

STM32L4R9I-DISCOProject:

NRST

ARD_A0ARD_A1ARD_A2ARD_A3ARD_A4ARD_A5

ARD_D5ARD_D4ARD_D3ARD_D2ARD_D1ARD_D0


ARD_D6ARD_D7

ARD_D15ARD_D14

Arduino_ ConnectorsArduino_ Connectors.SchDoc

DCMI_D[0..7]

DCMI_NRSTDCMI_PWR_EN

DCMI_VSYNCDCMI_HSYNCDCMI_PIXCK

DCMI_I2C

DCMI_CLK

Camera InterfaceCamera.SchDoc

MFX_IRQ_OUTMFX_WAKEUP

NRST

MFX_I2C

USB_OTGFS_PPWR_EN

DCMI_PWR_EN

uSD_DetectUSB_OVER

DSI_RESET

LED_ORANGE

DSI_TOUCH_INT

AUDIO_RST

EXT_RESET

DSI_PWR_ON

JOYSTICK

STMOD+_SEL_0STMOD+_SEL_1

IDDIDD_measurement.SchDoc

LCD_I2CDSI_RESETDSI_TOUCH_INT

DSI_USARTDSI_SPI

DSI_BL_CTRL

DSI_PWR_ON

DSI_SWIRE

DSI_TEDSI_LANES

DSI_LCDLCD.SchDoc

OCTOSPI Flash

PSRAM

SD

USB_OTG

MFX_IRQ_OUTMFX_WAKEUP

ARD_A0

MFX_I2C

ARD_A1ARD_A2ARD_A3ARD_A4ARD_A5ARD_D0ARD_D1ARD_D2ARD_D3ARD_D4ARD_D5ARD_D6ARD_D7ARD_D8ARD_D9


USART_TXUSART_RX

SWCLKSWDIOSWO

DCMI_D[0..7]


STMOD+_UART

STMOD+_I2C

STMOD+_INTSTMOD+_RESET

STMOD+_ADCSTMOD+_PWM

STMOD+_MOSIsSTMOD+_MISOs

STMOD+_SPI

DFDATIN3DFDATIN1

DFSDM

MIC_VDD

CODEC

LED_GREEN

RESET

DCMI_CLK

DF_CKOUT

DSI_USARTDSI_SPI

JOY_SEL

DSI_TEDSI_LANES

DSI_BL_CTRLDSI_SWIRE

HSE_STLINK

MCUMCU.SchDoc

LED_GREEN

SD

JOYSTICK

LED_ORANGE

uSD_Detect

RESETJOY_SEL

EXT_RESET

EXT_I2C

PeripheralsPeripherals.SchDoc

U5V

PowerPower.SchDoc

PSRAM

PSRAMPSRAM.SchDoc

OCTOSPI FlashNRST

OCTOSPIOCTOSPI.SchDocNRST

SWCLKSWDIO

SWO

USART_TXUSART_RX

U5V

MCO_STLINK

ST_LINKST_LINK_V2-1_2.SCHDOC

USB_OTG

USB_OTGFS_PPWR_EN

USB_OVER

U5V

OTGUSB_OTG_FS.SchDoc

NRST

NRST

STMOD+_INTSTMOD+_RESETSTMOD+_ADC

DFDATIN3

STMOD+_PWM

DFDATIN1

STMOD+_UARTSTMOD+_SPISTMOD+_I2CSTMOD+_MOSIsSTMOD+_MISOs

DF_CKOUT


STMOD+STMOD+.SchDoc

CODEC

CODEC_I2CDFSDM

MIC_VDD

AUDIO_RST

AudioAudio.SchDoc

NRST



NRSTN S

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Figure 21. 32L4R9IDISCOVERY power

2 14

Power

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


E5V

E5V

U5V_ST_LINK R37820

VIN

10uFC39

ARDUINO power pin Vin3 Vout 2

Tab 4GND1

U15LD1117S50TR

+3V3

L52.2uH

+1V8

32

1

JP7

VDD

+5V

ARD_5V

JP9

U5V

1 23 45 67 8

109

JP4

Header M Straight 5x2H

5V_USB_CHARGER

10uFC36

1 2

PWR

GreenLD8

32

1

JP5

+5V

4.7uFC42

10uFC38

SW A1VINA2

ENB1

GND B2

VSEL1C1

VOS C2

VSEL2D1

VSEL3D2

U14

TPS62743

SW A1VINA2

ENB1

GND B2

VSEL1C1

VOS C2

VSEL2D1

VSEL3D2

U9

TPS62743

L42.2uH

+5V

10uFC30

+5V

4.7uFC33

12

D1ESDA7P60-1U1M

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Figure 22. 32L4R9IDISCOVERY Arduino™ Uno V3 connectors

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Arduino Uno connector

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


Arduino uno connector

+3V3

A0A1A2A3A4A5

RX/D0TX/D1

D2

D4PWM/D3

PWM/D5PWM/D6

D7

D8PWM/D9

PWM/CS/D10

SDA/D14SCL/D15 PG7

PG8

NRST

VIN

NRSTSCK/D13

MISO/D12PWM/MOSI/D11

AVDDGND

VREF+

ARD_A0ARD_A1ARD_A2ARD_A3

ARD_A4

ARD_A5

ARD_D5ARD_D4ARD_D3ARD_D2

ARD_D0ARD_D1


ARD_D6ARD_D7

ARD_D15

ARD_D14

PA7PC4PC3PB0

PA0

PA5

PC1PC0

PG11

PG6PA1PB4PA4

PH15PH13PI0PB15PB14PB13

ADC1_IN10

ADC1_IN5

ADC1_IN4ADC1_IN13ADC1_IN12

I2C3_SDA PG8

PG7I2C3_SCL

LPUART1_TXLPUART1_RX

TIM15_CH2

TIM5_CH2

TIM8_CH1NTIM5_CH4, SPI2_NSSTIM3_CH2, SPI2_MOSISPI2_MISOSPI2_SCKIOREF

NRST3V35VGNDGNDVIN

PO

WE

RA

IN

I2C3_SCL

I2C3_SDA

WARNING: voltage applied to VIN <11.5V

123456789

10

CN10

SSW-110-22-X-S-VS

12345678

CN16

SSW-108-22-X-S-VS

123456

CN17

SSW-106-22-X-S-VS 12345678

CN11

SSW-108-22-X-S-VS

TIM3_CH1

PF10

ARD_5V

PG8

PG7

VDD

WARNING: CN16-PIN4 is not a input PWR

SB2

SB33

SB32

SB35

SB34

R109 1K E5V C48[N/A]

SB27

1 2 GreenLD3

+3V3 510R2

1

23

GSD

T1BSN20

1MR6

ADC1_IN15

WARNING: Some Arduino IOs are shared with other functions:

Following ARD signals are multiplexed or shared with other functions. In case ARDUINOUNO is connected, take care that the corresponding features are disconnected or wellconfigured :

ARD_D7 : DCMI_HSYNC/DE (Camera conflict)ARD_A5 : STMOD+_PWM (STMod+ / PMOD conflict)ARD_D15 : I2C3_SCL (shared with STMod+)ARD_D14 : I2C3_SDA (shared with STMod+)ARD_D13 : DSI_SPI2_SCK (SPI2_SCK shared with STMod+/PMOD and DSI option)ARD_D12 : DSI_SPI_D/CX (SPI2_MISO shared with STMod+/PMOD and DSI option)ARD_D11 : DSI_SPI2_MOSI (SPI2_MOSI shared with STMod+/PMOD and DSI option)

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Figure 23. 32L4R9IDISCOVERY ST-LINK/V2-1

4 14

ST-LINK/V2-1

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A3 Revision:


STM_RST

T_JT

CK

T_JTCK

T_JT

DO

T_JT

DI

T_JTMS

OSC_INOSC_OUT

T_N

RS

T

AIN_1

USB ST-LINK

COMBoard Ident: PC13=0

T_SWDIO_IN

LED_STLINKMCO

STLI

NK

_RX

STLI

NK

_TX

T_SWO

USB_RENUMn

US

B_R

EN

UM

n

+3V3_ST_LINK

+3V3_ST_LINK

PW

R_E

XT

51

2

GND3

4

BYPASSINH

Vin Vout

U31LD3985M33R

+3V3_ST_LINK

+3V3_ST_LINK

Power Switch to supply +5Vfrom STLINK USB

PWR_ENn

+3V3_ST_LINK

3

1

2

T12

9013-SOT23VUSB_ST_LINK

VUSB_ST_LINK

VUSB_ST_LINK

VDD_STL

LED_STLINK

+3V3_ST_LINK

STM_JTMS

STM

_JTC

K

T_JR

ST

STL_USB_D_NSTL_USB_D_P

STL_USB_D_NSTL_USB_D_P

5V_STL

VUSB_ST_LINK U5V_ST_LINK

D7BAT60JFILM

+3V3_ST_LINK

VBAT1

PC132

PC143

PC154

OSC_IN5

OSC_OUT6

/RST7

VSSA8

VDDA9

PA010

PA111

U2_TX12

U2_

RX

13

U2_

CK

14

S1_C

K15

S1_M

ISO

16

S1_M

OSI

17

PB0

18

PB1

19

PB2/

BO

OT1

20

PB10

21

VSS

_123

VD

D_1

24

PB12 25

PB11

22

S2_CK 26S2_MISO 27S2_MOSI 28PA8 29PA9 30PA10 31PA11 32PA12 33JTMS 34VSS_2 35VDD_2 36

JTC

K37

JTD

I38

JTD

O39

JNR

ST40

PB5

41PB

642

PB7

43B

OO

T044

PB8

45PB

946

VSS

_347

VD

D_3

48

U30STM32F103CBT6

output current limitation : 625mA+3V3_ST_LINK

USB Virtual ComPort

SWD to MCUTCK/SWCLK

TMS/SWDIO

NRST

SWCLKPA14

SWDIOPA13

SWOPB3

Red

_Green

21

34

LD4HSMF-A201-A00J1

T_JTDOT_JTMS

VccA1

A12

A23

GND4 DIR 5B2 6B1 7VccB 8U10

SN74LVC2T45DCUT

VDD_STL

T_SWO

+3V3_ST_LINK

+3V3_ST_LINK

SWO_MCU

VCCA1

A12

A23

GND4 DIR 5B2 6B1 7VCCB 8U8

SN74LVC2T45DCUT

VDD_STL

VDD_STL

+3V3_ST_LINK

USART_TX

USART_RX

PA2

PA3

1 2X3

NX3225GD-8.00M

transistor pins numbers follow SOT23 JEDEC standard,

VBUS 1

DM 2

DP 3

ID 4

GND 5

Shield 6

USB

_Mic

ro-B

rece

ptac

le

Shield 7

Shield 8

Shield 9

EXP 10

EXP 11

CN13

1050170001

STLINK power supply

IN1

IN2

ON3 GND 4

SET 5

OUT 6

OUT 7

FAULT8

U11ST890CDR

T_JTCK

T_NRST

+5VVDD

5V_STL

VDD_STL

11

22

33

44 5 56 67 78 8

SW1EDG-501S

SWD

1 2 3 4 5 6 CN5313106S111116

Only footprint with Cable: TC2050-IDC-NL

PA13

PA14

PB3

VDD

TAG

+3V3_ST_LINK

1 2 3 4

CN15[N/A]

STM_JTMSSTM_JTCKSWCLK SWDIO

Not Fitted, must be on a border or the PCB.

VUSB_ST_LINK 5V_USB_CHARGER

12

3

JP10

12345 6

78910

CN8Tag-10_C

100nFC37

100nFC29

100nFC31

100nFC40

R103 [N/A]

2K7R104

4K7R105

100KR106

10KR10110pF

C9810pFC93

100nFC92

4K7R92

4K7R93

0R88

100KR25

100nFC19

100nFC22

0R20

100KR19

100KR18

100KR86[N/A]

1K5R98

10KR34

36KR36

100R35

100

R94

100

R28

100

R30

100

R32

100R110

100R26

100R111

100R115

R33 820

10KR29

100nFC35

1uFC41

0R22

100R21

100R23

1uFC95

100nFC94

100nFC34

100nFC32

1uFC96

100nFC97

10nFC91

1 2

FaultRed

LD5

SB36

SB14

0R24

0R31

D4 BAT60JFILM

D5 [N/A]

D6 [N/A]

E5V

U5V

R102[N/A]

R91 [N/A]

I/O11

GND2

I/O23 I/O2 4Vbus 5I/O1 6U28

USBLC6-2SC6

iDiff Pair 90ohm

iDiff Pair 90ohm

100nFC79

VUSB_ST_LINK

JP8[N/A]

1 32

4 5

U12ESDALC6V1W5

2K2

R27

MCO_STLINKMCO

To HSE input OSC_IN_PH0

1 32

4 5

U32ESDALC6V1W5

ST890DTR

IN1

IN2

ON3 GND 4

SET 5

OUT 6

OUT 7

FAULT8

E-PA

D9

U33[N/A]

Power Switch ST890 will be populated:- either by U11 ST890CDR in SO8 package- either by U33 ST890DTR in DFN8L package

VUSB_ST_LINK

PWR_ENn

U11_8

U11_8

U5V_ST_LINK

U11_5

U11_5

Sc

he

ma

tics

UM

227

1

60/7

7D

ocID030

906 Re

v 3

Figure 24. 32L4R9IDISCOVERY Octo-SPI Flash memory

5 14

OCTOSPI Flash

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


VDDVDD_OCTOSPIFLASH

OCTOSPI Flash

OCTOSPIM_P2_IO1OCTOSPIM_P2_IO0

OCTOSPIM_P2_DQSOCTOSPIM_P2_CS

OCTOSPIM_P2_IO2OCTOSPIM_P2_IO3OCTOSPIM_P2_IO4OCTOSPIM_P2_IO5OCTOSPIM_P2_IO6OCTOSPIM_P2_IO7

OCTOSPIM_P2_CLK

OCTOSPI

10KR48

100nFC65

SB23

MT35XL512ABA1G12-0SIT

DQ3D4

VCC B4S#C2

DQ1D2

CB2

DQ0D3

VSS E5DQ2/W#C4

DQ3

VCCS#

DQ1

C

DQ0

VSSDQ2/W#

DQ7E1

DQ5E3 DQ4D5

DQ6E2

DQSC3

RESET#A4

DNU A5

DNU B5

RFU A2

RFU A3

RFU B1

VSS C1VSS B3

VCC D1

VCC E4

VPP C5

U23

[N/A]Micron

100nFC66

100nFC49

OCTOSPIM_P2_CSOCTOSPIM_P2_DQSOCTOSPIM_P2_CLK

OCTOSPIM_P2_IO0OCTOSPIM_P2_IO1OCTOSPIM_P2_IO2OCTOSPIM_P2_IO3OCTOSPIM_P2_IO4OCTOSPIM_P2_IO5OCTOSPIM_P2_IO6OCTOSPIM_P2_IO7

33R51OCTOSPI_CSOCTOSPI_DQSOCTOSPI_CLK

OCTOSPI_IO0OCTOSPI_IO1OCTOSPI_IO2OCTOSPI_IO3OCTOSPI_IO4OCTOSPI_IO5OCTOSPI_IO6OCTOSPI_IO7

OCTOSPI_CS

OCTOSPI_DQS

OCTOSPI_CLK



OCTOSPI_CS

OCTOSPI_DQS

OCTOSPI_CLK

Macronix

RESET pins of Flash have internal pull-up (both) by default

OCTOSPI_RESETOCTOSPI_RESET

VPP_OCTOSPIFLASH

iOCTOSPI_IO

Matched Net Lengths [ Tolerance = 200 mil ]Impedance Constraint [Min = 40 Max = 60 ]

iOCTOSPI_IO

SB26

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

iOCTOSPI_IO

Close to Flash

33R5233R73

33R6833R7133R5333R7833R6733R7233R6933R63

VPP_OCTOSPIFLASH

PI11

PH8

PH10PH9

PI6

PG9PG10

PG12PG15

PI9PI10

NRSTNRST

SCLKB2

CSC2

SO/SIO1D2

SIO2C4

SIO3D4

SI/SIO0D3

SCLK

CS

SO/SIO1SIO2SIO3

SI/SIO0

SIO4D5

SIO5E3

SIO6E2

SIO7E1

NC B5NC B1NC A3NC A2

ECS A5

VCC B4

VCCQ D1

VCCQ E4

VSSQ C1

VSSQ E5

GND B3DQSC3

RESETA4 NC C5

U24

MX25LM51245GXDI00

SB25

10KR47

A5

A5

SB24

VDD_OCTOSPIFLASH

VDD_OCTOSPIFLASH

VPP connection is accessible on Micron

ECS feature can be monitored on Macronix by soldering SB25

Macronix MX25LM51245GXDI00 used by default (functional at 3V3 only)

Double footprint to be compatible with Micron P/N

UM

22

71S

chem

atics

DocID

030906 R

ev 3

61/77

Figure 25. 32L4R9IDISCOVERY peripherals

6 14

Peripherals

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


MICRO SD

PC11PC10

PC12PD2

(TF) Card

1 2GreenLD2

+3V3

LED_GREEN

LED_ORANGE

PH4

MFX_GPIO0

The 2 LEDs are top side

VDD

JOYSTICK

MFX_GPIO3MFX_GPIO4

MFX_GPIO1

MFX_GPIO2

VDD

PC13 - WKUP2

uSD_D0uSD_CLK

uSD_D1

uSD_D2uSD_D3

uSD_CMD

SD

uSD_D0uSD_D1

uSD_D2uSD_D3

uSD_CLKuSD_CMD

SD

uSD_Detect

JOY_DOWNJOY_LEFTJOY_RIGHTJOY_UP

JOYSTICK

JOYSTICK

uSD_Detect

Reset Button

GND

RESET

1 2OrangeLD1

510R5

680R3

100R42

micro SD is functional with 3V3 only

1 23 45 67 8

CN7

F206A-2*04MGF-A

R107 0R108 0I2C1_SDA

I2C1_SCL

VDD

PG13PB6 EXT_RESET

SSM-104-L-DH (Samtec)

R112 0

EXT_I2C ConnectorUser LEDs

SB37 +5V

GND

JOY_SEL

JOY_SEL

SD_D0SD_D1

SD_D2SD_D3

SD_CLKSD_CMD

uSD_Detect

JOY_SEL

SDA

SCL

I2C

EXT_I2CI2C1_SCL

I2C1_SDA

DAT3_IN4

RDATA_VCC 16

DAT3_EX 13

CMD_IN5

WP/CD1

VCC 15

CMD_EX 12

RDAT3_GND2

DAT2_EX 14DAT2_IN3

CLK_IN6

DAT0_IN7

DAT1_IN8 DAT1_EX 9DAT0_EX 10CLK_EX 11

GND17

U13

EMIF06-MSD02N16

IO1 1

GND3 IO2 2

U4

ESDA6V1L

1 32

4 5

U17ESDALC6V1W5

PC13 - WKUP2

MFX_GPIO11

MFX_GPIO5

MFX_GPIO5

PC8PC9

341 2

B1

TD-0341X-A00 [RESET/Black]

JOY_SEL is also the WAKE_UP functionCOMMON 5

Selection 2

DOWN 3

LEFT 1

RIGHT 6

UP 4

B2

MT008-AC

LK5

GND11

CM

D3

DA

T21

VSS

6

VD

D4

GND10

DA

T18

DA

T07

CA

RD

_DET

ECT

9

GND 12

DA

T3_C

D2

NC 13

CN6MR01A-01211

Sc

he

ma

tics

UM

227

1

62/7

7D

ocID030

906 Re

v 3

Figure 26. 32L4R9IDISCOVERY USB OTG FS

7 14

USB_OTG_FS

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


+5V

+3V3

VBUS1

DM2

DP3

ID4

GND5

Shield6

USB

_Mic

ro-A

Bre

cept

acle

Shield7

Shield8

Shield9

EXP10

CN9

475900001

PA9

PA10

PA11PA12

MFX_GPIO13

VBUS OK

MFX_GPIO14

+3V3

transistor pins numbers follow SOT23 JEDEC standard,

USB Full Speed operating range voltage: 3.0V<VDDUSB<3.6V

GND2

IN5

EN4 OUT 1FAULT 3U16

STMPS2141STR

3

1

2

T139013-SOT23

VBUSDMDPID

USB_OTGUSB_OTGFS_VBUSUSB_OTGFS_DMUSB_OTGFS_DPUSB_OTGFS_ID

USB_OTGFS_OVRCR

USB_OTG

USB_OTGFS_PPWR_EN

USB_OVER

U5V

47KR40

47KR39

12

RedLD7

4.7uFC43

0R41

620R38

12 Green

LD6

47KR113

10KR114

330R43

SB15

+5V

D_N

D_POpen drain

I/O11

GND2

I/O23 I/O3 4VBUS 5I/O4 6U18

USBLC6-4SC6

12

D2ESDA7P60-1U1M

Place Diode close to the pin 5 / 6 ofUSBLC6-4SC6Diode added, for USB Cable detachworkaround

iDiff Pair 90 ohm iDiff Pair 90 ohm

UM

22

71S

chem

atics

DocID

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ev 3

63/77

Figure 27. 32L4R9IDISCOVERY Round DSI display interface

8 14

LCD Interface

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A3 Revision:


+5V

L2 FCM1608KF-601T03

L1 FCM1608KF-601T03

SDASCL

I2C

LCD_I2CI2C1_SDA

VDD

VDD_LCD

DSI_PWR_ON 3

4

5

G

SD

6

21

T5STT7P2UH7

100nFC60

100KR50

100nFC5

10uFC4

SB12

SB11

SB9

100nFC53

PB1

DSI_TOUCH_INT

To MFXMFX_GPIO9

DSI LCD

TOUCH_INT

LCD_BL_CTRLDSI_BL_CTRL

DSI_TE

PG13

PB6

PF11

DSI_RESET

11 2 2

33 4 4

55 6 6

77 8 8

99 10 10

1111 12 12

1313 14 14

1515 16 16

1717 18 18

1919 20 20

2121 22 22

2323 24 24

2525 26 26

2727 28 28

2929 30 30

3131 32 32

3333 34 34

3535 36 36

3737 38 38

3939 40 40

4141 42 42

4343 44 44

4545 46 46

4747 48 48

4949 50 50

5151 52 52

5353 54 54

5555 56 56

5757 58 58

5959 60 60

6161

6262

6363

6464

CN4

QSH-030-01-F-D-A-K-TR

I2C1_SCL

I2C1_SDA

DSI_D2_PDSI_D2_N

DSI_D3_PDSI_D3_N

1V8_LCD

SB10

10K

R7

DSI_SWIRE

DSI_PWR_ON

VDD_LCD

DSI_SPI2_CLKDSI_SPI2_MOSIDSI_SPI_D/CX

DSI_USART_CKDSI_USART_TX

DSI_USART

DSI_SPI_CS

DSI_SPI_MOSIDSI_SPI_CK

DSI_SPI_DCX

DSI_SPI

DSI_USART

DSI_SPI

USART3_CKUSART3_TX

SB6SB8

DSI_CK_PDSI_CK_N

DSI_D0_PDSI_D0_N

DSI_D1_PDSI_D1_N

DSI_LANES

DSI_CK_PDSI_CK_N

DSI_D0_PDSI_D0_N

DSI_D1_NDSI_D1_P

DSI_LANES

BLGND

3V3_LCD

3

4

5

G

SD

6

21

T4STT7P2UH7

1V8_LCD

3

4

5

G

SD

6

21

T6STT7P2UH7

+3V3

+5V

+1V8

100nFC52

3V3_LCD

I2C1_SCL

DSI_SPI_USART_CS

DSI_SPI_D/CXSPI2_MOSISPI2_CLK

In case SB7 is connected, pay attention thatDSI_USART_CK is also connected to the ARD_A3function linked to ARDUINO Sheet

SB7

SB13

MFX_GPIO10

DSI_SPI_USART_CS

PB14PB15

PH14PB13

PB10PB0

PA8

In case SB13 is connected, pay attention thatDSI_USART_TX may also be used by theSTMod+/PMOD function of page 13 as USART3_TX(going to PMOD#2 signal)

SB13 is exclusive with SB6

SB7 is exclusive with SB8

All DSI pairs are Differential 100 ohm

0

R118

0

R119

0

R120

C100

[N/A]

C101

[N/A]

C99

[N/A]

Sc

he

ma

tics

UM

227

1

64/7

7D

ocID030

906 Re

v 3

Figure 28. 32L4R9IDISCOVERY IDD measurement and Multi Function eXpander

9 14

IDD measurement / MFX (Multi Function eXpander)

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A3 Revision:

STM32L4R9I-DISCOProject:VDD_MCU

Currentdirection

to MCU

differentialamplifier

SH0 SH1 SH2

Shunts

3

4

5

G

SD

6

21

T2STT7P2UH7

3

4

5

G

SD

6

21

T8STT7P2UH7

3

4

5

G

SD

6

21

T10STT7P2UH7

3

4 5

G

S D

621

T7STT7P2UH7 decoupling capacitors

close to TSZ122

MFX_IRQ_OUT

IDD_MEAS

MFX_SWCLK

CAL

SH2SH1

MFX_SWDIO

IDD_MEAS

SH1_D SH2_DSH0_D

CAL_D

VDD1 one capacitor close to each MFX pins:VDD, VDD_1, VDD_2, VDD_3

SH0

VDD_MCU

MFX_WAKEUP

L6FCM1608KF-601T03

12

3

JP1

bypass

R551_1%_0805

R8124_1%_0805

R85620_1%_0805

R6210K_1%_0805

V+

V-

3

21

48

U27ATSZ122IST

5

67

U27BTSZ122IST

V+

V-

3

21

48 U25A

TSZ122IST

5

67

U25BTSZ122IST

decoupling capacitorsclose to TSZ122

MFX_I2C1_SCLMFX_I2C1_SDA

MFX_WAKEUP

MFX_IRQ_OUT

NRST NRST

MFX_I2C1_SCL

MFX_I2C1_SDA

VDD1

VDD1

D3 BAT60JFILM

SDA

SCL

I2C

MFX_I2C

VDD

VDD

3

4 5

G

S D

621

T3STT7P2UH7

VDD

+5V

+5V

PI1

PB2

PG13

PB6

MFX_aGPIO1

CAL

MFX_aGPIO1

MFX_aGPIO1

T50_4 T50_6

AMP_VDD

AMP_5V

1 2 3 4

CN14[N/A]

MFX_SWCLK MFX_SWDIO

VDD1

3

4

5

G

SD

6

21

T9STT7P2UH7

3

4

5

G

SD

6

21

T11STT7P2UH7

100nFC84

100nFC88

100nFC83

100nFC89

100nFC90

100KR87

10KR96

510R95

0R79

100KR74

100KR49

100KR84

100KR89

100KR90

100nFC69

100nFC64

100nFC73

100nFC78

1uFC67

100R75

357KR77

11KR70

6K04R60

6K04R65 300KR66

300KR76

Default I2C Address:1000010

MFX_V3WAKEUP2 NRST7

TSC_XP/GPO010

TSC_XN/GPO111

TSC_YP/GPO212

TSC_YN/GPO313

USART_TX21

USART_RX22

SPARE14

SWDIO34

SWCLK37

I2C_SCL42

I2C_SDA43

BOOT044

I2C_ADDR45

IRQOUT46

IDD_CAL/GPO4 3

IDD_SH0 4

IDD_SH1/GPO5 5

IDD_SH2/GPO6 6

IDD_MEAS 25

GPIO0 18

GPIO1 19

GPIO2 20

GPIO3 39

GPIO4 40

GPIO5 15

GPIO6 16

GPIO7 17

GPIO8 29

GPIO9 30

GPIO10 31

GPIO11 32

GPIO12 33

GPIO13 26

IDD_SH3/GPO7 38

GPIO14 27

GPIO15 28

IDD_VDD_MCU 41

VD

D1

VD

DA

9

VD

D_1

24

VD

D_2

36

VD

D_3

48

VSS

A8

VSS

_123

VSS

_235

VSS

_347

U29

0R97

VDD1

JP6 [N/A]

SB31

DSI_TOUCH_INT

JOY_UPJOY_DOWNJOY_RIGHTJOY_LEFT

JOYSTICK

JOYSTICK

DSI_RESET

DCMI_PWR_EN

uSD_Detect

USB_OVER

JOY_DOWNJOY_RIGHTJOY_LEFT

JOY_UPLED_ORANGE

USB_OTGFS_PPWR_EN

AUDIO_RST

EXT_RESET

10nFC86

[N/A]


DSI_1V8_PWRON

DSI_PWR_ON

DSI_1V8_PWRON

DSI_3V3_PWRON

6.8KR117

56KR116 DSI_PWR_ONPA8 (MFX_GPIO8)

PA2 (MFX_aGPIO2)

22uFC75

UM

22

71S

chem

atics

DocID

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ev 3

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Figure 29. 32L4R9IDISCOVERY microcontroller

10 14

MCU

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A3 Revision:


OCTO SPI Flash


OCTOSPIM_P2_CLKOCTOSPIM_P2_CS

OCTOSPIM_P2_IO2OCTOSPIM_P2_IO3OCTOSPIM_P2_IO4OCTOSPIM_P2_IO5OCTOSPIM_P2_IO6OCTOSPIM_P2_IO7

OCTOSPIM_P2_DQS

OCTOSPI

OCTOSPIM_P2_IO0OCTOSPIM_P2_IO1OCTOSPIM_P2_IO2OCTOSPIM_P2_IO3

OCTOSPIM_P2_CSOCTOSPIM_P2_CLK

D[0..15]

PSRAM_A[0..20]

PSRAMPSRAM_A[0..20]

PSRAM_NE1PSRAM_NBL0

PSRAM_WEPSRAM_OE

PSRAM_D[0..15]

PSRAM_NBL1

PSRAM_WAITPSRAM_CLKPSRAM_ADV

PSRAM

PSRAM_NE1PSRAM_NBL0PSRAM_NBL1PSRAM_WEPSRAM_OE

PSRAM

DSI_USARTDSI_USART_CKDSI_USART_TX

DSI_USART

DSI_SPI_USART_CSSPI2_MOSISPI2_CLK

DSI LCD

CODEC

SAI_SDB

SAI_FSASAI_MCKA

SAI_SDA

SAI_SCKA

SAISAI1_SCKASAI1_MCKASAI1_FSASAI1_SDASAI1_SDB

DFSDMDATIN1

CKOUT

DFSDMDF_CKOUT

CODEC&DFSDM

uSD_D0

uSD_CLK

uSD_D1

uSD_D2uSD_D3

uSD_CMD

SD

uSD_D0uSD_D1

uSD_D2uSD_D3

uSD_CLKuSD_CMD

SD

SD

JOYSTICK

VBUSDMDPID

USB_OTGUSB_OTGFS_VBUSUSB_OTGFS_DMUSB_OTGFS_DPUSB_OTGFS_IDUSB_OTG

USB_OTG

MFXMFX_IRQ_OUT

MFX_WAKEUP

MFX_IRQ_OUT

MFX_WAKEUP

ArduinoARD_A0ARD_A0

SDASCL

I2C

MFX_I2CI2C1_SCLI2C1_SDA

ARD_A1ARD_A2ARD_A3ARD_A4ARD_A5

ARD_A1ARD_A2ARD_A3ARD_A4ARD_A5

ARD_D0ARD_D1ARD_D2ARD_D3ARD_D4ARD_D5ARD_D6ARD_D7ARD_D8ARD_D9


ARD_D0ARD_D1ARD_D2ARD_D3ARD_D4ARD_D5ARD_D6ARD_D7ARD_D8ARD_D9ARD_D10ARD_D11ARD_D12ARD_D13ARD_D14ARD_D15

Camera

DCMI_HSYNC

DCMI_VSYNC

DCMI_D[0..7]

DCMI_PIXCLK

NRST

ST_LINKUSART2_TXUSART2_RX USART_TX

USART_RX

SWCLKSWDIO

SWO

SWDIO

SWO

SWCLK

X1

NDK NX3215SA-32.768KHZ-EXS00A-MU00525

VDD_MCUVDDA

L3FCM1608KF-601T03

DCMI_D[0..7]

DCMI_VSYNC

DCMI_HSYNC

DCMI_PIXCK

STMOD+

STMOD+_SPIMISOMOSI

CLK

CS

SPISPI2_CLKSPI2_MISOSPI2_MOSIUSART3_CTS_SPI2_CS

DFDATIN1

MIC_VDD

OTHER CONTROL

STMOD+_UARTRXTX

RTS

CTS

UART

USART3_TXUSART3_RXUSART3_RTS

SDASCL

I2C

STMOD+_I2CI2C3_SCLI2C3_SDA


DFDATIN3

STMOD+_PWM

DFDATIN1

DFDATIN3

STMOD+_INTSTMOD+_RESETSTMOD+_ADCSTMOD+_PWM

DCMI_D1

DCMI_D2DCMI_D3

DCMI_D5DCMI_VSYNC

OCTOSPIM_P2_IO0

DCMI_PIXCLK

I2C1_SCL

JOY_SEL

DCMI_D0

PSRAM_WEPSRAM_OE

D0D1

D2D3

D13D14D15

DSI_SPI_DCX

PSRAM_A0PSRAM_A1PSRAM_A2PSRAM_A3PSRAM_A4PSRAM_A5

PSRAM_A6PSRAM_A7PSRAM_A8PSRAM_A9

PSRAM_A16PSRAM_A17PSRAM_A18

USART2_RX

uSD_D0uSD_D1uSD_D2uSD_D3uSD_CLK

uSD_CMD

SPI2_CLKSPI2_MISO

DFDATIN3

DFDATIN1

STMOD+_MOSIsSTMOD+_MISOsSPI2_MISOs

SPI2_MOSIs

SPI2_MOSIs

ARD_A0

ARD_A1ARD_A2

ARD_A5

ARD_D3

ARD_D4

ARD_D8

ARD_D9

32

1

JP3

+3V3

VDD_MCU

VDD_MCU

DSI_TE OSC_IN_PH0OSC_OUT_PH1

LED_GREENLED_GREEN

VDD_MCU

RESETNRST

DCMI_CLK DCMI_CLK

STMOD+_INT

VREF+

VDD

USART3_CK

DF_CKOUT

DF_CKOUT

VDD

100nFC28

100nFC21

100nFC26

100nFC27

100nFC17

100nFC20

100nFC23

100nFC72

100nFC61

100nFC12

100nFC18

100nFC7

100nFC15

100nFC85

1K5R100

1K5R99

0R61

R14 [N/A]

5.6pFC11

DF_CKOUT

100nFC10

1uFC13

R16 [N/A]

100KR15

5.6pFC9

PSRAM_CLKPSRAM_ADV

PSRAM_WAIT

OCTOSPIM_P2_IO4OCTOSPIM_P2_IO5OCTOSPIM_P2_IO6OCTOSPIM_P2_IO7

OCTOSPIM_P2_DQS

R54 0R56 0

OSC32_IN

OSC32_OUT

SAI1_SCKA

I2C1_SDA

USART3_TX

DSI_TE

USART2_TX

SWDIO

SWO

SWCLK

USB_OTGFS_VBUS

USB_OTGFS_DMUSB_OTGFS_DP

USB_OTGFS_ID

SPI2_MOSI

STMOD+_ADC

DFDATIN1

ARD_A4ARD_D5

ARD_D10

ARD_D11ARD_D12ARD_D13

LED_GREENDCMI_CLK

DCMI_D6

SAI1_MCKA

SAI1_SDAD4D5D6D7D8D9D10D11D12PSRAM_NE1

PSRAM_NBL0PSRAM_NBL1

PSRAM_A10PSRAM_A11PSRAM_A12PSRAM_A13PSRAM_A14PSRAM_A15

ARD_D0ARD_D1

ARD_D2

ARD_D6

USART3_CTS_SPI2_CS

USART3_CTS_SPI2_CS

USART3_TX

DSI_SPI

DSI_SPI_CSDSI_SPI_MOSI

DSI_SPI_CKDSI_SPI_DCX

DSI_SPI

DSI_TE

USART3_RX

OCTOSPIM_P2_IO3

OCTOSPIM_P2_IO5

DSI_CK_P

DSI_D0_PDSI_D0_N

DSI_D1_PDSI_D1_N

DSI_CK_N

I2C3_SCLI2C3_SDA

ARD_D15

OCTOSPIM_P2_IO4

SPI2_MISOs

DCMI_HSYNC

MFX_IRQ_OUT

OCTOSPIM_P2_CLK

USART3_RTS

PSRAM_CLK

PSRAM_WAIT


OCTOSPIM_P2_CS

OCTOSPIM_P2_DQS

PSRAM_ADV

BOOT0

ARD_A3USART3_CKDSI_BL_CTRLMFX_WAKEUP

MIC_VDD

DSI_SPI_USART_CS


JOY_SELJOY_SEL

VDD_MCU

100nF

C24C25

2.2uF

OCTOSPI Flash

DSI_LANES

DSI_CK_PDSI_CK_NDSI_D0_PDSI_D0_N

DSI_D1_NDSI_D1_P

DSI_LANESDSI_CK_P

DSI_D0_PDSI_D0_NDSI_D1_PDSI_D1_N

DSI_CK_N

STMOD+_PWM

ARD_D14

SPI2_MISO

DSI_BL_CTRL DSI_BL_CTRL

MIC_VDD

DCMI_D7SAI1_FSA

PSRAM_A20 DCMI_D4PSRAM_A19

DSI_SWIRE

DSI_SWIRE DSI_SWIRE

SAI1_SDB

ARD_D7

STMOD+_RESET

H3

H4 H1

H2

PC13-WKUP E1

PC0 J2

PC1 J3

PC2 J4

PC3 K1

PA0-WKUPK3

PA1M1

PA2-WKUPN1

PA3M2

PA4N2

PA5L3

PA6L4

PA7M4

PC4 K4

PB0N4

PB1L5

PB2N5

PB10N9

PB11H7

PB12N12

PB13N13

PB14M12

PB15L10

PC6 F11

PC7 G11

PC8 F9

PC9 G13PA8E11

PA9E12

PA10D11

PA11E13

PA12D13

PA13A11

PA14A10

PA15A9

PC10 D9

PC11 E9

PC12 F8

PB3A6

PB4A5

PB5B5

PB6C5

PB7D5

PB8C4

PB9D4

PC14-OSC32_INF1

PC15-OSC32_OUTG1

PH0-OSC_INH1

PH1-OSC_OUTJ1

NRSTH3

PH3-BOOT0E5

PD8 K10

PD9 K9

PD10 J10

PD11 J9

PD12 J8

PD13 H8

PD14 H11

PD15 H10

PD0 B8

PD1 C8

PD2 D8

PD3 E8

PD4 C7

PD5 D7

PD6 E7

PD7 F7

PF0 F5

PF1 F4

PF2 F3

PF3 G3

PF4 G4

PF5 G5

PF10 H4

PF11 M5

PF12 N6

PF13 M6

PF14 L6

PF15 K5

U7A

STM32L4R9AII6U

PE2D3

PE3D2

PE4D1

PE5E4

PE6-WKUPE3

PE7L7

PE8K6

PE9J6

PE10H6

PE11N8

PE12M8

PE13L8

PE14K7

PE15J7

PE0A4

PE1B4

PG0J5

PG1H5

PG2H9

PG3G8

PG4G7

PG5G9

PG6G12

PG7G10

PG8F10

PG9B7

PG10D6

PG11E6

PG12F6

PG13G6

PG15C6

PI0 A12

PI1 B11

PI2 B10

PI3 C10

PI4 D10

PI5 E10

PI6 B9

PI7 B2

PI9 B1

PI10 A1

PI11 C3

PH2 A2

PH4 K8

PH5 L9

PH8 N10

PH9 C11

PH10 M9

PH11 M10

PH12 B13

PH13 C9

PH14 A13

PH15 B12

DSI_D0_P L11

DSI_D0_N L12

DSI_D1_P J11

DSI_D1_N J12

DSI_CK_P K11

DSI_CK_N K12

U7B

STM32L4R9AII6U

VBATE2

VSSA/VREF- K2

VREF+L1

VDD_1/9_0/10N11

VDDAL2

VDDUSBD12

VSS_1/IO_2 A7

VDD_8/11H13

VDD_4N3

VDD_5G2

VDD_6/7N7

VDD_9A8

VSS_2 C12

VSS_4/6 H2

VSS_5 F2

VSS_3/13 B3

VSS_7 M7

VSS_8/9_0/11 H12

VSS_9 M3

VSSIO_1 F13VDDIO_1F12

VDD_2C13

VDDIO_2B6

VDD_3/13A3

VDD_REGDSIM13 DSI_VSS_0 J13

DSI_VSS_1 K13DSI_VCAP_0L13

VSS_10 C2

VSS_12 M11VDD_12C1

U7C

STM32L4R9AII6U

4

13

2

X2

NX3225GA-16MHz-EXS00A-CG04815

6.8pF

C51

6.8pF

C50

OSC_IN_PH0 HSE_STLINK

SB28

22uFC6

22uFC8

22uFC87

Sc

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UM

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Figure 30. 32L4R9IDISCOVERY PSRAM

11 14

PSRAM

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


Synchronous PSRAM

PSRAM_D[0..15]

PSRAM_A[0..20]

PSRAM

PSRAM_A[0..20]

PSRAM_NE1PSRAM_NBL0

PSRAM_WEPSRAM_OE

PSRAM_D[0..15]

PSRAM_NBL1

PSRAM_WAITPSRAM_CLKPSRAM_ADV

PSRAM

PSRAM_NE1PSRAM_NBL0PSRAM_NBL1PSRAM_WEPSRAM_OE


PSRAM_WEPSRAM_OE

PSRAM_A0PSRAM_A1PSRAM_A2PSRAM_A3PSRAM_A4PSRAM_A5PSRAM_A6PSRAM_A7PSRAM_A8PSRAM_A9PSRAM_A10PSRAM_A11PSRAM_A12PSRAM_A13PSRAM_A14PSRAM_A15PSRAM_A16PSRAM_A17PSRAM_A18

PSRAM_D0PSRAM_D1PSRAM_D2PSRAM_D3PSRAM_D4PSRAM_D5PSRAM_D6PSRAM_D7PSRAM_D8PSRAM_D9PSRAM_D10PSRAM_D11PSRAM_D12PSRAM_D13PSRAM_D14PSRAM_D15

PD5PD4

PD14PD15PD0PD1PE7PE8PE9PE10PE11PE12PE13PE14PE15PD8PD9PD10

PF0PF1PF2PF3PF4PF5PF12PF13PF14PF15PG0PG1

PD11PD12PD13

PG2PG3PG4PG5

PE0PE1

functional at 3.3V only

PSRAM_NE1

100nF

C16

100nF

C14

SB5

R17 0

JP2

+3V3 PSRAM_VDD

PSRAM_VDD

PSRAM_VDD

VDD_LCD 0R13

R11 [N/A]

PSRAM_A0PSRAM_A1PSRAM_A2PSRAM_A3PSRAM_A4PSRAM_A5PSRAM_A6PSRAM_A7PSRAM_A8PSRAM_A9PSRAM_A10PSRAM_A11PSRAM_A12PSRAM_A13PSRAM_A14PSRAM_A15PSRAM_A16PSRAM_A17PSRAM_A18

PF0PF1PF2PF3PF4PF5PF12PF13PF14PF15PG0PG1

PD11PD12PD13

PG2PG3PG4PG5

PSRAM_D0PSRAM_D1PSRAM_D2PSRAM_D3PSRAM_D4PSRAM_D5PSRAM_D6PSRAM_D7PSRAM_D8PSRAM_D9PSRAM_D10PSRAM_D11PSRAM_D12PSRAM_D13PSRAM_D14PSRAM_D15

PD14PD15PD0PD1PE7PE8PE9PE10PE11PE12PE13PE14PE15PD8PD9PD10


PSRAM_WEPSRAM_OE

PD5PD4PE0PE1

PSRAM_CE_CS1

SB3PSRAM_A20

CRE_CS2

VDD_VDDQ

VDD_VDDQ

H6

Asynchronous PSRAM

3.3V I/Os only

PSRAM_CLKPSRAM_ADV

PSRAM_WAIT

PSRAM_CLKPSRAM_ADV

PSRAM_WAIT

SB3 and SB4 are only useful for U6 :

Double footprint for Async/Sync PSRAMs compatibility

iPSRAM_A

Matched Net Lengths [ Tolerance = 200 mil ]Impedance Constraint [Min = 40 Max = 60 ] i PSRAM_D

Matched Net Lengths [ Tolerance = 200 mil ]Impedance Constraint [Min = 40 Max = 60 ]

iPSRAM_A

iPSRAM_A i

PSRAM_A iPSRAM_A i

PSRAM_Ai

PSRAM_A

iPSRAM_A

iPSRAM_D

PSRAM_CE_CS1

PD3PD6

PB7

PD7

PSRAM_A19PE4

SB4H6

PSRAM_VDD

PE3

A4B4

A3B3

A2A5

A1A4

A0A3

CS1B5

I/O0 B6I/O1 C5I/O2 C6I/O3 D5

VDD D6

GND D1

I/O4 E5I/O5 F5I/O6 F6I/O7 G6

WEG5

A16E4

A15F4

A14F3

A13G4

A12G3

A11H5

A10H4

A9H3

A8H2


VDD E1

I/O12 E2I/O13 F2I/O14 F1I/O15 G1

LBA1

UBB2

OEA2

A7D4

A6C4

A5C3

A17D3 A18H1

GND E6

CS2 A6

NC E3

NC H6

IS66WV1M16EBLL-55BLI

A19G2U5

PSRAM_A19 PE3

IS66WVC2M16ECLL-7010BLI

A4B4

A3B3

A2A5

A1A4

A0A3

CEB5


VDD D6

VSSQ D1

I/O4 E5I/O5 F5I/O6 F6I/O7 G6

WEG5

A16E4

A15F4

A14F3

A13G4

A12G3

A11H5

A10H4

A9H3

A8H2


VDDQ E1

I/O12 E2I/O13 F2I/O14 F1I/O15 G1

LBA1

UBB2

OEA2

A7D4

A6C4

A5C3

A17D3 A18H1

VSS E6

CRE A6

NC J6

NC E3

NC J4

A19G2 A20H6

WAITJ1

CLKJ2

ADVJ3

NC J5

U6

[N/A]

SB3

U5 used U6 used

X

SB4 X

R8

R9

R10

R12

[N/A]

10K

10K

10K[N/A]

10K

10K

10K

[N/A]

0R

0R

[N/A]

If SB3 is fitted, CAMERA and PSRAM functions are exclusives; if SB4 fitted, PSRAM usable memory density is reduced to 16M bits

(Default)

10KR10

10KR9

10KR8

10K[N/A]

R12

[N/A]U6

U5 [N/A]fitted

fitted

SB38

CRE_CS2

VDD_VCORE

VDD_VCORE

SB39 1V8_LCD

PSRAM_VDD

SB38

SB39

0R

[N/A] 0R

[N/A]

1.8V CORE only

32M bits

16M bits

SB39 for U6 only

UM

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Figure 31. 32L4R9IDISCOVERY camera

12 14

Camera

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


DCMI_D0DCMI_D1DCMI_D2DCMI_D3DCMI_D4DCMI_D5DCMI_D6DCMI_D7

DCMI_HSYNC

DCMI_VSYNC

DCMI_PIXCLK

Camera_CLK

DCMI_PWR_ENDCMI_NRSTDCMI_NRST

DCMI_D[0..7] DCMI_D[0..7]

DCMI_HSYNCDCMI_VSYNC

DCMI_PIXCLK

DCMI_PWR_EN


123456789101112131415161718192021222324252627282930

CN2

FPU330ZH-BT1D3-CASDASCL

I2C

DCMI_I2C

VDD

VDD

PB8

PB6

PH5

PA4

PC7PH11

PG13

PC6

PH12PE4PI4

PI7

PI5

MFX_GPIO12

DCMI_CLK

DCMI_I2C1_SCLDCMI_I2C1_SDA

100nFC3

22R4

Camera is functional with 3V3 only

PA8

CAUTION : Following DCMI signals are multiplexed with otherfunctions. In case CAMERA module is plugged, take care that thecorresponding features are disconnected or well configured :

DCMI_D0 : STMod+_INTDCMI_D1 : DFDATIN3 (STMod+)DCMI_D4 : PSRAM_A20 (only in case of U6 PSRAM is used)DCMI_D6 : STMod+_PWMDCMI_D7 : STMod+_RESETDCMI_HSYNC/DE : STMod+_ADC and ARD_D7

CAMERA is exclusive with some STMod+ , PMOD and ARDUINO signals

22uFC46

Sc

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Figure 32. 32L4R9IDISCOVERY STMOD+ interface

13 14

STMOD+ Interface

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


GNDGND+5V+5V


DF_CKOUT

STMOD+_PWMSTMOD+_UART RX

TX

RTS

CTS

UARTUSART3_CTSUSART3_TXUSART3_RXUSART3_RTS

STMOD+_SPI MISOMOSI

CLK

CS

SPI

SPI2_CLKSPI2_MISOpSPI2_MOSIpSPI2_CS

SDA

SCL

I2C

STMOD+_I2C

I2C3_SCL

I2C3_SDA

STMOD+_MOSIs

STMOD+_MISOs PI2

PA5 (*)PA4 (*)PI7 (*)

PB15 (*) PC2 (*)

PB13 (*)PB14 (*)

PI3

PB11

PA6

PA6

PA15

PC6 (*)PB10 (*)

PG7 (*)

12345678910

11121314151617181920

CN1

SQT-110-01-F-D-RA

GND GND+3V3 +3V3

123456

789

101112

CN3

SSW-106-02-F-D-RA

PMOD#1PMOD#2PMOD#3PMOD#4

PMOD#1PMOD#2PMOD#3PMOD#4

PMOD#11PMOD#12

PMOD#11PMOD#12

SB21SB17SB19

PMOD

D1 16

D2 5

1-2SEL 3

D3 8

D4 13

1S21 1S115

2S26 2S14

3S29 3S17

4S214 4S112

VCC 2GND11

3-4SEL 10

U21

STG3692QTR

PMOD#2

PMOD#3

PMOD#4VDD

PMOD_SEL_0 STMOD+_SEL_0

R4610K

C471uF

PMOD_SEL_1 STMOD+_SEL_1R4510K

MOSIp/TX

MISOp/RX

SCK/RTS


PMOD#2PMOD#3PMOD#4

0

MOSIpMISOpSCK

TXRXRTSSCK

TXRX

SPI UART

VDD

(*) default configuration to support MikroBus modules using MB1280 fan-out board

UART/SPI

0 0 (*)1 (*) 1

1

(*)STMOD+/PMOD USART3_TX (PB10) may also use DSI_USART_TX optionSTMOD+/PMOD SPI2_MOSIp (PB15) shared with ARD_D11 and DSI_SPI2_MOSI optionSTMOD+/PMOD SPI2_MISOp (PB14) shared with ARD_D12 and DSI_SPI_DCX optionSTMOD+/PMOD SPI2_SCK (PB13) shared with ARD_D13 and DSI_SPI2_SCK optionSTMOD+ I2C3 SCL (PG7) shared with ARD_D15 (I2C3_SCL)STMOD+ I2C3 SDA (PG8) shared with ARD_D14 (I2C3_SDA)

STMod+

USART3_TXSPI2_MOSIp

USART3_RXSPI2_MISOp

USART3_RTSSPI2_CLK

PG8 (*)

PB15 (*)

PB14 (*)

PB13 (*)

CTSCSCS

ATOM FH200210C-12000

ATOM FH254206C-1600

SB22

DFDATIN3PC7 (*)

DFDATIN1PB12 (*)

(*)STMOD+ INT (PC6) in conflict with DCMI_D0 (Camera)STMOD+ RESET (PI7) in conflict with DCMI_D7 (Camera)STMOD+ ADC (PA4) in conflict with ARD_D7 and DCMI_HSYNC (Camera)STMOD+ PWM (PA5) in conflict with ARD_A5STMOD+ DFDATIN1 (PB12) in conflict with MEMs microphones (use SB1 in audio page)STMOD+ DF_CKOUT (PC2) in conflict with MEMs microphonesDFDATIN3 (PC7) in conflict with DCMI_D1 (Camera)

SB20SB16SB18

PB10 (*)

PB11

PA15

PC2 (*)

PMOD#1 (PA6)

CAUTION : Following STMod+/PMOD signals are multiplexed or shared with other functions. In caseSTMod+/PMOD module is plugged, take care that the corresponding features are disconnected or well configured :

TTTT

MFX_GPIO6

MFX_GPIO7

UM

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Figure 33. 32L4R9IDISCOVERY Audio and DFSDM

14 14

Audio&DFSDM

MB1311 C

28/08/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:


2

6

4

3 CN12

PJ3028B-3

AGND

CODEC

SAI_SDB

SAI_FSA

SAI_MCKA

SAI_SDA

SAI_SCKA

SAI

SDASCL

I2C

CODEC_I2CI2C1_SCLI2C1_SDA

SAI1_SCKASAI1_MCKA

SAI1_FSASAI1_SDASAI1_SDB

LRCK 1

SDA/CDIN 2SCL/CCLK 3AD0/CS 4VA_HP5

FLYP6

GND_HP7

FLYN8

VSS_HP9 AOUTB 10

AOUTA 11

VA12

AGND 13

DAC_FILT+ 14

VQ 15

ADC_FILT+ 16

MICIN1/ AIN3A17

MICIN2/ BIAS/AIN3B 18

AIN2A19

AIN2B/BIAS20

AFILTA 21

AFILTB 22AIN1A23

AIN1B24

RESET25

VL26

VD27

GND 28

SDOUT 29

MCLK 30

SCLK 31

SDIN 32

GND 33

U26

CS42L51-CNZ

AGND

22nFC59AGND

10uFC54

150pFC77

AGND

+1V8

AGND

AGND

AUDIO_RST

AGND

AGND

I2C address of CS42L51 is 0x94 (AD0=0)

MFX_GPIO15

PE5PE2

PB9PE6PB5

PB6PG13

100nFC81

1uFC82

1uFC71

1uFC63

1uFC68

low ESR ceramic capacitor

low ESR ceramic capacitor

1uFC621uFC56

1uFC55

100nFC74

100nFC57

100nFC80

100KR59

10KR83

10KR80

2K2R64

50R58

50R57

100nFC70

0R82

1V8_CODEC

1V8_CODEC

VDD

SB29

SB30

GND5 DOUT 4CLK 3VDD1 LR 2U2

MP34DT01TR-M

GND5 DOUT 4CLK 3VDD1 LR 2U1

MP34DT01TR-M

PB12

PC2

DFSDM

DATIN1

CKOUT

DFSDMCKOUT

DATIN1

MIC_VDD PH2

100nFC1

100nFC2

10KR1

SB1

MIC_VDD

150pFC76

must be C0G

22nFC581 3

24 5

U3ESDALC6V1W5

MIC_VDD

CKOUTDATIN1

LR

LR

AGND

I/O11

GND2

I/O23 I/O3 4GND 5I/O4 6U22

ESDA6V1BC6

GND3 DOUT 1CLK 4VDD5 LR 2U20 [N/A]

GND3 DOUT 1CLK 4VDD5 LR 2U19 [N/A]

C45[N/A]

C44[N/A]

R44 [N/A]

CKOUTMIC_VDD

Sc

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UM

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Figure 34. Round DSI display board (MB1314)

1 1

1.2" DSI LCD with Capacitive Touch

MB1314 B.1

6/1/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:

STM32L4Rx-EVAL Daughter boardProject:

I2C_SDA

I2C_SCL

DSI_INT

DSI_BL_CTRL

Connector for motherboard

HSSI_CLK_NHSSI_CLK_P

HSSI_D0_NHSSI_D0_P

DSI_TE

DSI_RST

11 2 2

33 4 455 6 677 8 899 10 10

1111 12 121313 14 141515 16 161717 18 18

1919 20 202121 22 222323 24 24

2525 26 26

2727 28 282929 30 303131 32 32

3333 34 34

3535 36 363737 38 383939 40 40

4141 42 424343 44 444545 46 464747 48 48

4949 50 505151 52 525353 54 54

5555 56 56

5757 58 585959 60 60

6161

626263636464

CN1

QTH-030-02-F-D-A-K-TR

BLGND

GND1 XRES 2

DSI_D0N3 SWIRE 4DSI_D0P5 OTP 6GND7 TE 8DSI_CLKN9 GND 10

DSI_CLKP11 GND 12GND13 GND 14VDDIO15 VCI 16GND17 GND 18

ELVSS19 ELVDD 20ELVSS21 ELVDD 22ELVSS23 ELVDD 24

PAD25 PAD 26PAD27 PAD 28

CN2

504208-2410

HSSI_CLK_NHSSI_CLK_P

HSSI_D0_NHSSI_D0_P

DSI_TE

DSI_RST

Touch panel connector for LCD panel

C7100nF

VDDDSI_RSTDSI_INT

VDD

R14K7

I2C_SDAI2C_SCL

FPC05008-09200(ATOM)GND6 GND1

INT2

SCL4SDA5

RESET3

VCC8 IOVCC7

CN3

FH19C-8S-05SH

C8100nF

+3V3

SWIRE

+3V3VDD

ELVDDELVSS

C1100nF

+3V3VDD

C2100nFSWIRE_MCU

PVIN A1LX3

A2

LX1A3 LX2 B1AV

DD

B2

PGN

DB

3

VO2 C1

AG

ND

C2

VO1C3

END

1Sw

ireD

2

AVIND3

U1SM3321

BLGND

BLGND

BLGND

BLGND

BLGND

BLGND

ELVDD ELVSS BLGND

SWIRE

SWIRE_MCU

R3[N/A]

R2[N/A]

SB3

SB4

SB2

L1DFE201610E-4R7M=P2

C9

GRM188R61A106KE69D

H1

390x390 pixels DSI LCDZZ1

IEG1120TB103GF-001

R4[N/A]

BLGND

SB5DSI_BL_CTRL

SB1

Rev B.1: BLVDD use +3V3, add L3, L4, C11 and C12, remove D1, D22. L1, L2 footprint update 0806L3. RevB, remove C11

C6100nF

C3100nF

L2

DFE201610E-4R7M=P2

C10GRM188R61A106KE69D



I2C address: 0x70 IC:FT3267

+3V3L3BEAD(FCM1608KF-601T03)

C12100nF

L4BEAD(FCM1608KF-601T03) BLGND

C1110uF

UM

22

71S

chem

atics

DocID

030906 R

ev 3

71/77

Figure 35. Fanout board (MB1280)

1 1

Fanout Board

MB1280 A.2

10/10/2017

Title:

Size: Reference:

Date: Sheet: of

A4 Revision:

STM32H7-DK-DBProject:

12345678910

11121314151617181920

CN1

TMM-110-01-L-D-RA

STMOD#11-INTSTMOD#12-RSTSTMOD#13-ADCSTMOD#14-PWM

STMOD#17-DF-D3STMOD#18-DF-CK3STMOD#19-DF-D7STMOD#20-DF-CK7

+5V

STMOD#1STMOD#2STMOD#3STMOD#4

STMOD#11STMOD#12

STMod+

1234

5678

CN4

Header 4X2A

1234

CN3

1125S-SMT-4P

12345678910

CN12

PAD 1X8


STMOD#13STMOD#14


VCC

R1

4K7[N/A]

R24K7[N/A]

I2C_SCL

I2C_SDA

2

13

G

SD

T2BSN20[N/A]

2

13

G

SD

T1BSN20[N/A]

123456789

10

CN9

PAD 1X8

12345678

CN11

Header 8X1_Female

12345678

CN10

Header 8X1_Female

STMOD#1STMOD#2STMOD#3

STMOD#4STMOD#7

STMOD#8STMOD#9

STMOD#10


STMOD#4STMOD#7

STMOD#8STMOD#9

STMOD#10

STMOD#11STMOD#12STMOD#13 STMOD#14

STMOD#17STMOD#18

STMOD#19STMOD#20

STMOD#11STMOD#12STMOD#13 STMOD#14

STMOD#3


STMOD#12STMOD#13

STMOD#7

STMOD#10

I2C_SCLI2C_SDA

VCC

+5V

+5V+3V3

STMOD#1-NSS/CTSSTMOD#2-MOSIp/TXSTMOD#3-MISOp/RXSTMOD#4-SCK/RTS

STMOD#7-SCLSTMOD#8-MOSIsSTMOD#9-MISOsSTMOD#10-SDA

ANRSTCSSCKMISOMOSI+3.3VGND

PWMINTRXTXSCLSDA+5VGND

GNDGPIO2GPIO0TXD

RXDCH_PDRSTVCC

+5V +3V3

+3V3+5V VCC

+3V3

STMOD#7

STMOD#10

I2C_SCL

I2C_SDA

Only PAD for bread board connection

support Grove- Barometer sensor (BMP180)

Mikrobus connectors

Bread board connectors ESP-01 connector

Grove connector

32

1

JP1

TP1Ground

closed pin2 and pin3 for default

support Grove- LCD RGB Backlight

1234

CN2

1125S-SMT-4P

VCC

support Grove- NFC

STMOD#2STMOD#3

TXRX

SCLSDA

C21uF_X5R_0603

C510nF_X7R_0603

C31uF_X5R_0603

C1100nF

C4100nF

51

2

GND3

4

BYPASSEN

Vin Vout

U1 LDK120M33R

SB2 Closed

SB1 Closed

ATOM: PH200210C-07000

+5V

+3V3

Only PAD for Power

12

CN5

PAD 2

12

CN6

PAD 2

+5V

+3V3

Only PAD for Power

12

CN7

PAD 2

12

CN8

PAD 2

Fanout board (MB1280) UM2271

72/77 DocID030906 Rev 3

Appendix E Fanout board (MB1280)

The Fanout board (see Figure 36) is included in the 32L4R9IDISCOVERY kit. It is connectible to STMod+ connector (CN1) and it provides access to:

• MikroElektronika Click board compatible connectors (CN10 and CN11: two 1x8-pin female connectors)

• ESP-01 compatible connector (CN4: 2x4-pin female connector)

• Seeed Studio™ Grove compatible connectors (CN3 and CN2: two 1x4-pin male connectors)

• Reserved standard 2.54 mm pitch of STMod+ pin header for breadboard.

The main active component for this Fanout board is the 3.3 V regulator U1 (200 mA).

Figure 36. STMod+ Fanout module plugged into CN1 connector

E.1 MikroElektronika mikroBUS™ compatible connector (Fanout CN10 / CN11)

The mikroBUS compatible connector is 2.54 mm pitch with a pair of 1x8-pin female connectors. Table 33 shows the definition of the pins.

DocID030906 Rev 3 73/77

UM2271 Fanout board (MB1280)

76

The mikroBUS pinout assignment is available at the: http://mikroe.com website.

E.2 ESP-01 Wi-Fi® board compatible connector

The ESP-01 Wi-Fi board connector is 2.54 mm pitch with 2x4-pin female connectors. Table 34 shows the definition of the pins.

E.3 Compatible connectors for the Grove boards

The two connectors of the Grove board are 2.54 pitch with 1x4-pin male connectors, the part number is 1125S-SMT-4P.

E.3.1 Compatible connector for I2C Grove boards (Fanout CN3)

The CN3 connector is compatible with Grove- Barometer sensor (BMP180) and Grove-LCD RGB Backlight boards using cable for connection. Table 35 shows the definition of the pins.

Table 33. Description of the mikroBUS connectors (CN11 and CN10)(1)

1. Please refer to Appendix C to check STMod+ pin sharing with other functions of the 32L4R9IDISCOVERY

STMod+ connector CN11 number

Function of mikroBUS

Pin

number

Pin

numberFunction of mikroBUS

STMod+ connector CN10 number

STMod+#13-ADC AN 1 1 PWM STMod+#14-PWM

STMod+#12-RST RST 2 2 INT STMod+#11-INT

STMod+#1-CS CS 3 3 RX STMod+#3-RX

STMod+#4-SCK SCK 4 4 TX STMod+#2-TX

STMod+#9-MISOs MISO 5 5 SCL STMod+#7-SCL

STMod+#8-MOSIs MOSI 6 6 SDA STMod+#10-SDA

- +3.3 V 7 7 +5 V STMod+#6#15 +5V

STMod+#5#16 GND GND 8 8 GND STMod+#5#16 GND

Table 34. Description of the ESP-01 Wi-Fi board connector pins(1)

1. Please refer to Appendix C to check STMod+ pin sharing with other functions of the 32L4R9IDISCOVERY.

STMod+ connector number

Function of ESP-01

Pin

number

Pin

numberFunction of

ESP-01STMod+ connector

number

STMod+#5#16 GND GND 1 8 TXD STMod+#3-RX

STMod+#14 GPIO2 2 7 CH_PD STMod+#13

STMod+#11 GPIO0 3 6 RST STMod+#12-RST

STMod+#2-TX RXD 4 5 VCC -

Fanout board (MB1280) UM2271

74/77 DocID030906 Rev 3

E.3.2 Compatible connector for UART Grove boards (Fanout CN2)

The CN2 connector is compatible with Grove-NFC boards using cable for connection. Table 36 shows the definition of the pins.

Table 35. Description of the I2C Grove board connector pins (CN3)(1)


STMod+ connector NO. Function of Grove CN3 Pin number

STMod+#7-SCL SCL 1

STMod+#10-SDA SDA 2

STMod+#6#15 +5 V VCC 3

STMod+#5#16 GND GND 4

Table 36. Description of the UART Grove board connector pins (CN2)(1)


STMod+ connector Function of Grove CN2 Pin number

STMod+#3-RX RX (Grove TX) 1

STMod+#2-TX TX (Grove RX) 2

STMod+#6#15 +5 V VCC 3

STMod+#5#16 GND GND 4

DocID030906 Rev 3 75/77

UM2271 Federal Communications Commission (FCC) and Industry Canada (IC) Compliance

76

Appendix F Federal Communications Commission (FCC) and Industry Canada (IC) Compliance

This kit is designed to allow:

1. Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and

2. Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of 47 CFR, Chapter I (“FCC Rules”), the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

Revision history UM2271

76/77 DocID030906 Rev 3

Revision history

Table 37. Document revision history

Date Revision Changes

17-Oct-2017 1 Initial version

26-Oct-2017 2

Updated:

Chapter 10.6.1: clarification on SW1 use

Table 4: pin name ARD-5V

Table 5: JP4 CHGR position description

Table 28: Unused functions

Table 30: Reserved solder bridges

4-Jan-2018 3

Updated:

Figure 4: JP1 description

Section 8: bootloader limitation

Section 10.5 and Table 3: SW1

Section 10.6.1 and Table 4: ARD and JP1

Section 10.9: boot configuration

Table 12, Table 27, Table 28

Appendix F

Added:

Section 10.13.2 and Section 11.3: limitation

Removed:

Appendix G

DocID030906 Rev 3 77/77

UM2271

77

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