2.5.4 Vector Table .................................................................................................................. 86
2.5.5 Exception Priorities ....................................................................................................... 87
2.5.6 Interrupt Priority Grouping .............................................................................................. 87
2.5.7 Exception Entry and Return ........................................................................................... 87
2.6 Fault Handling .............................................................................................................. 89
2.6.1 Fault Types ................................................................................................................... 90
2.6.2 Fault Escalation and Hard Faults .................................................................................... 90
2.6.3 Fault Status Registers and Fault Address Registers ........................................................ 91
2.6.4 Lockup ......................................................................................................................... 91
2.7 Power Management ...................................................................................................... 91
2.7.1 Entering Sleep Modes ................................................................................................... 92
2.7.2 Wake Up from Sleep Mode ............................................................................................ 92
2.8 Instruction Set Summary ............................................................................................... 93
3 Cortex-M3 Peripherals ........................................................................................... 97
3.1 Functional Description ................................................................................................... 97
3.1.1 System Timer (SysTick) ................................................................................................. 97
3.1.2 Nested Vectored Interrupt Controller (NVIC) .................................................................... 98
3.1.3 System Control Block (SCB) ........................................................................................ 100
3.1.4 Memory Protection Unit (MPU) ..................................................................................... 100
3.2 Register Map .............................................................................................................. 105
3.3 System Timer (SysTick) Register Descriptions .............................................................. 107
3.4 NVIC Register Descriptions .......................................................................................... 111
3.5 System Control Block (SCB) Register Descriptions ........................................................ 124
3.6 Memory Protection Unit (MPU) Register Descriptions .................................................... 153
4 JTAG Interface ...................................................................................................... 163
4.1 Block Diagram ............................................................................................................ 164
4.2 Signal Description ....................................................................................................... 164
4.3 Functional Description ................................................................................................. 165
4.3.1 JTAG Interface Pins ..................................................................................................... 165
4.3.2 JTAG TAP Controller ................................................................................................... 167
4.3.3 Shift Registers ............................................................................................................ 167
4.3.4 Operational Considerations .......................................................................................... 168
4.4 Initialization and Configuration ..................................................................................... 170
4.5 Register Descriptions .................................................................................................. 171
4.5.1 Instruction Register (IR) ............................................................................................... 171
4.5.2 Data Registers ............................................................................................................ 173
5 System Control ..................................................................................................... 175
5.1 Signal Description ....................................................................................................... 175
5.2 Functional Description ................................................................................................. 176
5.2.1 Device Identification .................................................................................................... 176
5.2.2 Reset Control .............................................................................................................. 176
5.2.3 Non-Maskable Interrupt ............................................................................................... 181
5.2.4 Power Control ............................................................................................................. 182
5.2.5 Clock Control .............................................................................................................. 182
5.2.6 System Control ........................................................................................................... 189
5.3 Initialization and Configuration ..................................................................................... 191
5.4 Register Map .............................................................................................................. 191
5.5 Register Descriptions .................................................................................................. 193
July 24, 20124
Texas Instruments-Production Data
Table of Contents
OBSOLETE: TI has discontinued production of this device.