SLAU213A October 2007 Mixed Signal Products

MSP430FG4618/F2013 Experimenter’s Board

U s e r ' s G u i d e

User's Guide

EVM TERMS AND CONDITIONS

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Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265

Copyright © 2007, Texas Instruments Incorporated

If You Need Assistance

Support for the MSP430 device and the experimenter’s board is provided by the Texas Instruments Product Information Center (PIC). Contact information for the PIC can be found on the TI web site at www.ti.com. Additional device-specific information can be found on the MSP430 web site at www.ti.com/msp430.

Note: IAR KickStart is supported by Texas Instruments

Although IAR KickStart is a product of IAR, Texas Instruments provides the support for it. Therefore, please do not request support for KickStart from IAR. Please consult the extensive documentation provided with KickStart before requesting assistance.

FCC Warning

This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference.

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1. Getting Started

The MSP430FG4618/F2013 experimenter’s board is a comprehensive development target board that can be used for a number of applications. The MSP-EXP430FG4618 kit comes with one MSP430FG4618/F2013 experimenter’s board shown in Figure 1 and two AAA 1.5 V batteries.

Figure 1: MSP430FG4618/F2013 Experimenter’s Board

2. Devices Supported

The MSP430FG4618/F2013 experimenter’s board is based on the Texas Instruments ultra-low power MSP430 family of microcontrollers [1, 2]. Residing on this board are the MSP430FG4618 [3] and the MSP430F2013 [4] microcontrollers.

3. Tools Requirement

An MSP430 Flash Emulation Tool (MSP-FET430UIF) is required to download code and debug the MSP430FG4618 and MSP430F2013. Two separate JTAG headers are available, supporting independent debug environments. The MSP430FG4618 uses the standard 4-wire JTAG connection while the MSP430F2013 uses the Spy-Bi-wire (2-wire) JTAG interface allowing all port pins to be used during debug. For more details on the Flash Emulation Tool, refer to the MSP430 Flash Emulation Tool (FET) User’s Guide [5], which covers two different debug environments: IAR Embedded Workbench and TI Code Composer Essentials (CCE). Detailed information of their use is included in Appendix A.

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4. Functional Overview

The MSP430FG4618/F2013 experimenter’s board supports various applications through the use of the on-chip peripherals connecting to a number of on-board components and interfaces as shown in Figure 2.

LCD

FG4618

F2013

WirelessCC1100/

2420/2500 EMK

InterfaceJT

AG

2JT

AG

1Buzzer

Microphone

AnalogOut

Capacitive Touch

Pad

Buttons

RS-

232

Figure 2: Experimenter’s Board Block Diagram

Wireless communication is possible through the expansion header which is compatible with all Chipcon Wireless Evaluation Modules from Texas Instruments. Interface to a 4-mux LCD, UART connection, microphone, audio output jack, buzzer, and single touch capacitive touch pad enable the development of a varietyof applications. Communication between the two on-board microcontrollers is also possible. In addition, all pins of the MSP430FG4618 are made available either via headers or interfaces for easy debugging. Sample code for this board is available online at www.ti.com/msp430.

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5. Hardware Installation

Power may be provided locally from two on-board AAA batteries, externally from a Flash emulation tool (FET), or an external supply. The power source is selected by configuring jumpers VCC_1, VCC_2, and BATT. PWR1 and PWR2 will supply power to each MSP430 independently. Appendix B has information on the exact location of these jumpers. Figure 3 shows the jumper hierarchy and configuration options.

Figure 3: Jumper Settings for Power Selection

The battery jumper BATT is used to select the on-board batteries to power the system, independent of the FET connections. The user must ensure that this voltage meets the requirement for proper functionality of the MSP430.

The power selection jumpers VCC_1 and VCC_2 select the power connections between the board and each FET interface. These jumpers are two rows of 3-pin headers, one for each MSP430 on-board. VCC_1, the bottom row, is for the MSP430FG4618 and, VCC_2 on the top row, is for the MSP430F2013. A jumper placed on the rightmost 2-pins (FET) selects the JTAG FET as the power source. A jumper placed on the leftmost 2-pins (LCL) would enable local power (either from the batteries or an external supply) to be applied to each FET for proper logic threshold level matching during program/debug.

Headers PWR1 and PWR2 have been provided to enable power to the individual MSP430s. A jumper placed on PWR1 provides power to the MSP430FG4618 and a jumper placed on PWR2 provides power to the MSP430F2013. Individual device current consumption can be measured via each of these jumpers. Care should be taken that MSP430 interconnections are not made that could influence such a measurement.

Once the required power selections have been made the experimenter’s board is ready to be used. Both the MSP430FG4618 and MSP430F2013 are factory programmed. After power up, the MSP430FG4618 executes an ultra-low power real-time clock displayed on the LCD. The MSP430F2013 pulses LED3 from LPM3 using the VLO as a periodic wake-up time base.

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6. Functional Overview

This section contains information about the various on-board interfaces and their functionality and about the various peripherals enabling these interfaces. Wireless applications are facilitated using the MSP430’s capabilities to interface with the Chipcon wireless evaluation modules (CCxxxxEMK) from Texas Instruments. The on-board LEDs and LCD display are used for visual feedback. Audio applications leveraging the MSP430FG4618’s full analog signal chain can be implemented using the microphone and the audio output jack. In addition, communication across components on and off the board has been integrated.

6.1 Interfaces

Some of these interfaces have the option of being inactive when not in use to conserve power. This is made possible by MSP430 port pin configurations and/or hardware jumpers on-board. Appendix B gives complete details of these jumper configurations and their positions.

6.1.1 4-Mux LCD Display

The integrated SoftBaugh SBLCDA4 LCD display supports 4-MUX operation and interfaces to the LCD driver peripheral of the MSP430FG4618. More information on the LCD can be obtained from the manufacturer’s datasheet.

6.1.2 Momentary-On Push Buttons

Two external push buttons, S1 and S2, are connected to the interrupt capable MSP430FG4618 digital I/O port, P1.

6.1.3 Light Emitting Diodes (LEDs)

The experimenter board has a total of four LEDs, three connected to the MSP430FG4618 and one connected to the MSP430F2013. The LEDs are primarily used for display purposes. Two of the LEDs can be disconnected using jumpers to reduce the overall power consumption of the board.

6.1.4 Buzzer

A buzzer is connected to a digital I/O port of the MSP430FG4618. It is driven via a port pin of the MSP430. The buzzer can be completely disconnected by using jumper JP1.

6.1.5 Single-Touch Sensing Interface

A capacitive touch sensing interface in the shape of a “4” is provided on-board. This touchpad is connected to the digital I/O ports of the MSP430F2013. A total of 16 individual segments form the touchpad, and activity is monitored by the MSP430F2013. The resulting data is communicated to the MSP430FG4618 via the MSP430 inter-communication connections provided on-board.

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6.2 Communication Peripherals

The experimenter’s board supports numerous communication interfaces for on- and off-board connections.

6.2.1 Chipcon Wireless Evaluation Module Interface

Interface to the wireless world is accomplished via the Wireless Evaluation Module header supporting the CCxxxxEMK boards from TI. The transceiver modules are connected to the USART of the MSP430FG4618 configured in SPI mode. Libraries [6] that interface the MSP430 to these transceivers are available at www.ti.com/msp430. The CC2420EMK supports the 802.15.4/Zigbee standard. The CC1100EMK may be configured to work at an RF carrier frequency of up to 868 MHz and the CC2500EMK/CC2420EMK at an RF carrier frequency of 2.4 GHz.

6.2.2 RS-232

For a serial interface to a PC, the MSP430FG4618 supports the standard RS-232 9-pin interface via its USCI peripheral configured in UART mode. Standard baud rates for transmission and reception can be configured using in software

6.2.3 I2C/SPI

The MSP430FG4618 and the MSP430F2013 have support for I2C and SPI protocols using the USCI and the USI peripherals. This protocol is used for inter-processor communication The link can be disconnected in hardware allowing these peripherals to be used for other communication purposes.

6.3 Analog Signal Chain

The experimenter’s board is capable of forming a complete analog signal chain using the MSP430FG4618. This board can be used for numerous audio applications and is capable of recording and playback of audio signals without the use of additional external components.

1ST OrderActive HPF

FilterUsing OA0

SAMPLING FREQ

Analog IN

Analog OUT

Digital IN

2ND OrderActive LPF

FilterUsing OA1

Active Voltage Follower

Using OA2

12-bit Analog-to-

digital Converter

Data Processing

12-bitDigital-to-

analog Converter

Output Jack

MIC

Figure 4: MSP430 Analog Signal Chain

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6.3.1 Microphone

The microphone is connected to the MSP430FG4618 and may be used for various applications. The microphone is enabled/disabled via a port pin connected to the MSP430FG4618.

6.3.2 Analog Filters

An active first order high-pass filter (HPF) with a cut-off frequency set at approximately 340Hz follows the microphone to eliminate extremely low input frequencies. An optional 2nd order Sallen-Key active low-pass filter (LPF) with a cut-off frequency set to approximately 4 kHz removes the high-frequency noise on the analog output of the 12-bit DAC. The filter setup is shown in Figure 5. These filters use the integrated Op-Amps of the MSP430. The Op-Amps OA0 & OA1 facilitate the filtering processes. The grayed dashed blocks in Figure 5 identify those elements which are internal to the MSP430FG4618.

R29 1K

C18 470nF

OA0OMIC

R24 1.4K

C16 22nF

OA1I0

OA1I1 OA1O

R2515.4K

C173.3nF

OA2I0OA2O

1st Order Active HPF

SALLEN-KEY 2nd

Order Active LPF

Unity Gain Buffer

12-bitADC12

12-bit DAC12

R30 150K

C21 15pF

OA0I0

OA0I1

OA2I1

MSP430 Internal

OA0O

-

+OA0

-

+OA1

-

+OA2

Figure 5: Active Analog Filter setup

6.3.3 Analog Output

Analog output can be brought out of the board via a mono 3.5mm jack connected to the integrated Op-Amp OA2. The input to this amplifier can be internally connected to the DAC12 output of the MSP430FG4618. Several attenuation options are provided internally and in hardware using jumper JP4.

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6.4 System Clocks

The experimenter’s board has various system clock options that support low and high frequencies. Each MSP430 has integrated clock sources as well as support for external connections.

6.4.1 MSP430F2013 Clock Sources

The MSP430F2013 uses the internal VLO operating at ~12kHz for an ultra-low power standby wake up time base. The integrated DCO is internally programmable at frequencies up to 16MHz for high speed CPU and system clocking.

6.4.2 MSP430FG4618 Clock Sources

A standard 32.768kHz watch crystal is populated at footprint X2 and sources source ACLK of the MSP430FG4618 for low frequency, ultra-low power standby operation and RTC functionality. The integrated FLL+ clock module provides a programmable internal high frequency clock source for the CPU and other peripherals on-chip. In addition to the FLL+, an external high frequency crystal or resonator up to 8MHz can be added via footprint X1.

6.5 Jumper Configurations

The board supports various peripherals and components to be enabled when required and disabled when not in use to reduce overall power consumption. This is achieved either by software or directly in hardware. Some of the jumpers are mandatory for the board to function correctly. Refer to Appendix B for detailed information regarding the exact locations of these jumpers and their functionality.

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7. Frequently Asked Questions

1) What devices can be programmed with the experimenter’s board? The experimenter’s board is designed to develop applications using the MSP430FG4618 and MSP430F2013. These devices can be replaced by MSP430FG461x and MSP430F20xx device derivatives, respectively.

2) How is power supplied to the experimenter’s board? Three supply options exist: 2xAAA battery power, JTAG and external power supplies are supported.

3) Can I use the Parallel FET (MSP-FET430PIF) to program/debug the MSP430? The MSP4304618 supports the USB and Parallel Port FETs. The MSP430F2013 is supported by the USB FET (MSP-FET430UIF) only. The Parallel Port FET does not support the Spy Bi-Wire program/debug mode used.

4) I have erased and reprogrammed the MSP430; can I restore the factory programmed-firmware on the device(s)? The software source files are available at the MSP-EXP430FG4618 documentation page at www.ti.com/msp430.

5) The MSP430FG4618 is no longer accessible via JTAG, is something wrong with the device? - Verify that the target device is powered properly

- If the target is powered locally, verify Vcc is applied to pin 4 of the JTAG header

- If communication and power are correctly applied to the target and the issue persists, it may be due to the MSP430FG4618 accidentally being programmed with MSP430F2xx source code. In some conditions ‘F2xx source code loaded onto the ‘FG4618 can configure the SVS module to monitor SVSIN (P6.7) and reset the device in case of a low voltage condition externally applied. Temporarily connecting P6.7 of the ‘FG4618 to Vcc and reprogramming the target device with the valid source code will eliminate this issue.

6) Does the experimenter’s board protect against blowing the JTAG fuse of the target devices? No. Fuse blow capability is inherent to all Flash-based MSP430 devices in order to protect user’s intellectual property. Care must be taken to avoid the enabling of the fuse blow option during programming that would prevent further access to the MSP430 device(s) via JTAG.

7) I am measuring system current in the range of 30mA, is this normal? Current consumption of the system is dependent on the functions and operation of the hardware being performed. The RF connectivity and isolated UART communication support, when used, can reach these current consumption levels. Take care that these elements are not accidentally enabled, specifically the isolated UART, if such system currents are not expected.

9

8) Can I use two FETs to perform simultaneous access of the FG4618 and F2013 during program/debug? Yes, independent flash emulation tools (either USB or Parallel for ‘FG4618 and USB only for ‘F2013) can be simultaneously used to program the MSP430 target devices. When supplying power via the FET, it is recommended to use only one FET to source power. The second FET can sense this voltage level instead of supplying power, to avoid any voltage conflicts in-system. Refer to section 5 Hardware Installation for details regarding supported power supply configurations.

9) I cannot properly open the workspace and projects provided in the .zip file with IAR, how can I open the sample code? The IAR workspace/projects included for the sample code provided has been created using IAR Embedded Workbench Version 3.42A. These projects are not backward compatible with older IAR releases and will not open using prior versions. New workspace/projects can be created and the sample code source files can be added manually in order to build these samples with older versions. Instruction for setting up a project in IAR are described in the MSP-FET430 Flash Emulation Tool (FET) (for use with IAR v3.x) User's Guide,[5].

10) I have loaded the ‘FG4618 and ‘F2013 sample code for the capacitive touch sensing application. It doesn’t seem to be working, what is wrong? Verify that the correct jumper settings are used for H1 enabling the I2C communication link between MSP430s. Make sure jumper JP2 is removed, disconnecting LED3 from the touchpad circuitry. When connected, the LED causes the measurement of the capacitive touch element on P1.0 to fail.

8. References 1. MSP430x4xx Family User's Guide, Texas Instruments literature number SLAU056 2. MSP430x2xx Family User's Guide, Texas Instruments literature number SLAU144 3. MSP430xG461x device data sheet, Texas Instruments literature number SLAS508 4. MSP430x20x3 Device datasheet, Texas Instruments literature number SLAS491 5. MSP-FET430 Flash Emulation Tool (FET) (for use with IAR v3.x) User's Guide, Texas Instruments

literature number SLAU138 6. MSP430 Interface to CC1100/2500 Code Library, Texas Instruments literature number SLAA325

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Appendix A Configuring an IAR Embedded Workbench Project IAR Embedded Workbench may be used to program/debug the on-board MSP430 devices with custom firmware or provided sample code available at www.ti.com/msp430. Programming and debug is done using JTAG1 and JTAG2 providing access to the MSP430FG4618 and MSP430F2013 respectively. Steps to program each of these devices are shown in this section. It is assumed that the USB FET tool has been installed using the instructions provided in the FET User’s guide. Please note that the Parallel port FET tool can also be used to program/debug the MSP430FG4618.

MSP430FG4618 Programming

1. Connect the 14-pin cable to the JTAG1 header on the board.

2. Create a new project or load a valid existing project on the IAR Embedded Workbench.

3. In IAR Embedded Workbench under the Project drop-down choose Options; this brings up the menu shown in Figure A-1. Under the General Options Target choose MSP430FG4618 from the MSP430x4xx Family option.

Figure A-1: Device selection in IAR

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4. From the same menu under the Debugger option, select the FET Debugger shown as a snapshot in Figure A-2.

Figure A-2: Selecting the FET Debugger

5. Then proceed to the FET Debugger option and choose the Texas Instrument USB-IF as shown in Figure A-3. The default setting of Automatic needs no change.

Figure A-3: Selection of the USB interface

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MSP430F2013 Programming

1. Connect the 14-pin cable to JTAG2 header on the board.

2. Create a new project or load a valid existing project on the IAR Embedded Workbench.

3. In IAR Embedded Workbench under the Project drop-down choose Options; this brings up the menu shown in Figure A-1. Under the General Options Target choose MSP430F2013 from the MSP430x2xx Family option.

4. From the same menu under the Debugger option select the FET Debugger shown as a snapshot in Figure A-2.

5. Then proceed to the FET Debugger option and choose the Texas Instrument USB-IF as shown in Figure A-3. The default setting of Automatic needs no change.

6. For a new project created, the Spy-Bi-Wire interface is the default setting for the MSP430F2013. If this selection needs modification, under the FET Debugger menu as shown in Figure A-4, check the Override default box and then make the Spy-Bi-Wire selection instead of the 4-Wire JTAG. It is to be noted that the Parallel FET does not support the Spy-Bi-Wire interface and cannot be used to debug/program the MSP430F2013.

Figure A-4: Selection of the Spy-Bi-Wire interface for MSP430F2013

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Appendix B Jumper Locations and Settings Figure B-1 represents the location and name of each jumper on the experimenter’s board.

Figure B-1: Jumper Locations

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Table B-1 Jumper Settings and Functionality

Header Functionality when jumper present

Functionality when jumper absent Requirement

PWR1 Provides power to MSP430FG4618

Also used to measure current consumption of the MSP430FG4618

MSP430FG4618 is not powered

Required for MSP430FG4618

use

PWR2 Provides power to MSP430F2013

Also used to measure current consumption of the MSP430F2013

MSP430F2013 is not powered

Required for MSP430F2013

use

BATT On-board batteries provide power Also used to measure current consumption

Batteries will not provide power to either MSP430

Required for use with AAA batteries

JP1 Buzzer enabled and connected to P3.5 of the MSP430FG4618 Buzzer muted Optional

JP2 LED3 enabled and connected to P1.0 of the MSP430F2013

LED3 connection disabled

Optional / Required for LED3 use

JP3 LED4 enabled and connected to P5.1 of MSP430FG4618

LED4 connection disabled

Optional / Required for LED4 use

JP4 Attenuation set to approximately 69% of the DAC12 audio output

98% attenuation of the DAC12 audio

output Optional

Header H1 (Pins 1-2, 3-4)

I2C Configuration 1-2: SDA – UCB0SDA 3-4: SCL – UCB0SCL

No communication possible via I2C

Required for inter-processor communication

Header H1 (Pins 1-2, 3-4,

5-6, 7-8)

SPI Configuration 1-2: SDI – UCB0SIMO

3-4: SDO – UCB0SOMI 5-6: P1.4 – P3.0 (CS) 7-8: SCLK – UCB0CLK

No communication possible via SPI

Required for inter-processor communication

Table B-1 breaks down the function of each jumper shown in Figure B-1.

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MIN

US_

MEM

P$26

1 3 5 7 9

JTAG

2

11 13

2 4 6 12 148 10

13579

JTAG

1

1113

2461214 810

16

27

38

49

5

RS23

2G

1

G2

C3

D2

D1

2 3

78 56

U2

2 3

78 56

U1

Q1

12

S1

12

S2

R33R31

R26 R27 R34

R29

R32

R30

R19

R18

R20

R13

R14

R15

R16

R23

R8

R3

R10

R1

R2

R5

R9

R4

R11

R12

R17

1PW

R22

1PWR1

2

8079787776

75 74 73 72 71 70 69 68 67 66 65 64 63 62 61

25242322212019181716151413121110987654321

50494847464544434241403938373635343332313029282726

60 59 58 57 56 55 54 53 52 51

81828384858687888990919293949596979899100

LED1

R6LED2

R7

R28

C4

D3

X1

X2

C15

12

BB3

34

56

78

910

1112

1314

1516

1718

C5C7

12

BB1

34

56

78

910

1112

1314

1516

1718

12

BB2

34

56

78

910

1112

1314

1516

1718

BAND P$4

TIP P$1

RING P$2

12

H1

34

56

78

1111

1212

1313

1414

11

22

1515

1616

4 4

5 5

6 6

7 7

88

99

1010

33

INN

ER_G

ND

INN

ER_G

ND

C11

C16

C17

R24

R25

123

VCC_

2

R21

R22

C14

C20

1 3 5

2 4 67 9

8 1011 13 15

12 14 1617 19

RF1

18 20

1 3 5

2 4 67 9

8 1011 13 15

12 14 1617 19

RF2

18 20

GN

D

S0

S0

S1

S1

S2

S2

S3

S3

S5

S5

S6

S6

S7

S7

S8

S8

S9

S9

S10

S10

S11

S11

S12

S12

S13

S13S1

4S14

S4

S4

S15

S15

S16

S16

S17

S17

S18

S18

S19

S19

S20

S20

COM

3

COM

3

COM

2

COM

2

COM

1

COM

1

COM

0

COM

0

UCB

0SD

A

UCB

0SD

A

UCB

0SD

A

UCB

0SCL

UCB

0SCL

UCB

0SCL

DVC

C_46

18

DVC

C_46

18

DVC

C_46

18

DVC

C_46

18

DVC

C_46

18

DVC

C_46

18

DVC

C_46

18

SIM

O1

SIMO1

SIM

O1

SOM

I1SO

MI1

SOMI1

UCL

K1

UCLK1

UCL

K1

S21

S21

GD

O2

GD

O2

GDO2

GD

O0

GD

O0

GDO0

P3.0

P3.0

P3.0

UTX

D1

UTX

D1

URX

D1

URX

D1

P7.5

P7.5

2013

_P1.

220

13_P

1.3

2013

_P1.

420

13_P

1.5

SCL

SDA

2013

_P2.

720

13_P

2.6

SBW

TCK

SBW

TCK

SBW

TDIO

SBW

TDIO

P6.0

P6.0

P6.0

P6.1

P6.1

P6.1

P6.2

P6.2

P6.2

P6.5

P6.5

P6.5

LCD

CAP

LCD

CAP

P10.

7

P10.

7

P5.1

P5.1

VERE

F+

VERE

F+

RESE

TCC

RESE

TCC

RESETCC

VREG

_EN

VREG

_EN

VREG_EN

FIFO

FIFO

FIFO

FIFO

P

FIFO

P

FIFOP

PC_G

ND

2013

_P1.

120

13_P

1.0

P2.0

P2.0

P2.2

P2.2

P2.6

P2.6

UCB

0CLK

UCB

0CLK

UCB

0CLK

P3.4

P3.4

P3.5

P3.5

P3.5

P3.7

P3.7

P5.6

P5.6

P7.4

P7.4

P7.6

P7.6

P7.7

P7.7

VREF

VREF

P5.0

P5.0

P10.

6

P10.

6

P6.4

P6.4

P6.4

P6.6

P6.6

P6.3

P6.3

P6.3

P6.7

P6.7

P6.7

VERE

F-

VERE

F-

SW1

SW1

SW1

SW2

SW2

SW2

P2.1

P2.1

P2.3

P2.3

P2.3

P2.7

P2.7

UCA

0TXD

UCA

0TXD

UCA

0TXD

UCA

0RXD

UCA

0RXD

UCA

0RXD

P3.6

P3.6

P5.7

P5.7

P5.5

P5.5

P4.2

P4.2

P4.2

P7.0

P7.0

UCA0SIMO

UCA

0SIM

O

UCA0SOMI

UCA

0SO

MI

UCA0CLK

UCA

0CLK

P4.7

P4.7

P4.6

P4.6

LCL_

PWR1

LCL_

PWR1

FET_

PWR1

FET_

PWR1

FET_

PWR2

FET_

PWR2

LCL_

PWR2

LCL_

PWR2

AVCC

_461

8

AVCC

_461

8

0.1u

F10

uF

0.1u

F

0.1u

F

0.1u

F GN

D

GN

D

VCC

0.1u

F

GN

DGN

D

0.1u

F

GN

D

VCC

GN

D

MSP

430F

2013

PW

GND

GN

D

GN

D

AL60P

470n

GN

D

10uF

15p

GN

D

VCC

0.1u

F

GN

D

GN

D

10uF

1N41

48

1N4148

PS88

02

PS88

02

MM

BT50

88 GN

D

GN

D

VCC

GN

DG

ND

10k470k

470 1k 3k3

1k 0

150k

10

47k

470

5M1

5M1

5M1

5M1

470

10

47k

10

1k

2k2

100

2k2

2k2

100k

100k

470

GN

D

VCC_2013

GN

D

470

GN

D

470

22k

10uF1N4148

10uF

10uF

10uF

VCC

VCC

1uF

22nF

3.3n

F

1.4k

15.4

k

0-D

NP

0-D

NP

DNP

470n

GND

GN

D

GN

D

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Interface interface.ti.com Digital Control www.ti.com/digitalcontrol

Logic logic.ti.com Military www.ti.com/military

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Microcontrollers microcontroller.ti.com Security www.ti.com/security

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