Tiva TM4C123GH6PM Microcontroller

DATA SHEET

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DS-TM4C123GH6PM-15741.2722SPMS376D

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Table of ContentsRevision History ............................................................................................................................. 38About This Document .................................................................................................................... 42Audience .............................................................................................................................................. 42About This Manual ................................................................................................................................ 42Related Documents ............................................................................................................................... 42Documentation Conventions .................................................................................................................. 43

1 Architectural Overview .......................................................................................... 451.1 Tiva C Series Overview .............................................................................................. 451.2 TM4C123GH6PM Microcontroller Overview .................................................................... 461.3 TM4C123GH6PM Microcontroller Features ..................................................................... 491.3.1 ARM Cortex-M4F Processor Core .................................................................................. 491.3.2 On-Chip Memory ........................................................................................................... 511.3.3 Serial Communications Peripherals ................................................................................ 531.3.4 System Integration ........................................................................................................ 571.3.5 Advanced Motion Control ............................................................................................... 631.3.6 Analog .......................................................................................................................... 651.3.7 JTAG and ARM Serial Wire Debug ................................................................................ 671.3.8 Packaging and Temperature .......................................................................................... 671.4 TM4C123GH6PM Microcontroller Hardware Details ........................................................ 681.5 Kits .............................................................................................................................. 681.6 Support Information ....................................................................................................... 68

2 The Cortex-M4F Processor ................................................................................... 692.1 Block Diagram .............................................................................................................. 702.2 Overview ...................................................................................................................... 712.2.1 System-Level Interface .................................................................................................. 712.2.2 Integrated Configurable Debug ...................................................................................... 712.2.3 Trace Port Interface Unit (TPIU) ..................................................................................... 722.2.4 Cortex-M4F System Component Details ......................................................................... 722.3 Programming Model ...................................................................................................... 732.3.1 Processor Mode and Privilege Levels for Software Execution ........................................... 732.3.2 Stacks .......................................................................................................................... 742.3.3 Register Map ................................................................................................................ 742.3.4 Register Descriptions .................................................................................................... 762.3.5 Exceptions and Interrupts .............................................................................................. 922.3.6 Data Types ................................................................................................................... 922.4 Memory Model .............................................................................................................. 922.4.1 Memory Regions, Types and Attributes ........................................................................... 952.4.2 Memory System Ordering of Memory Accesses .............................................................. 952.4.3 Behavior of Memory Accesses ....................................................................................... 952.4.4 Software Ordering of Memory Accesses ......................................................................... 962.4.5 Bit-Banding ................................................................................................................... 972.4.6 Data Storage ................................................................................................................ 992.4.7 Synchronization Primitives ........................................................................................... 1002.5 Exception Model ......................................................................................................... 1012.5.1 Exception States ......................................................................................................... 102

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Tiva TM4C123GH6PM Microcontroller

2.5.2 Exception Types .......................................................................................................... 1022.5.3 Exception Handlers ..................................................................................................... 1062.5.4 Vector Table ................................................................................................................ 1062.5.5 Exception Priorities ...................................................................................................... 1072.5.6 Interrupt Priority Grouping ............................................................................................ 1082.5.7 Exception Entry and Return ......................................................................................... 1082.6 Fault Handling ............................................................................................................. 1112.6.1 Fault Types ................................................................................................................. 1122.6.2 Fault Escalation and Hard Faults .................................................................................. 1122.6.3 Fault Status Registers and Fault Address Registers ...................................................... 1132.6.4 Lockup ....................................................................................................................... 1132.7 Power Management .................................................................................................... 1142.7.1 Entering Sleep Modes ................................................................................................. 1142.7.2 Wake Up from Sleep Mode .......................................................................................... 1142.8 Instruction Set Summary .............................................................................................. 115

3 Cortex-M4 Peripherals ......................................................................................... 1223.1 Functional Description ................................................................................................. 1223.1.1 System Timer (SysTick) ............................................................................................... 1233.1.2 Nested Vectored Interrupt Controller (NVIC) .................................................................. 1243.1.3 System Control Block (SCB) ........................................................................................ 1253.1.4 Memory Protection Unit (MPU) ..................................................................................... 1253.1.5 Floating-Point Unit (FPU) ..............................................................