LM3S1621 Datasheet, PDF (4/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Table of Contents
2.5.4
2.5.5
2.5.6
2.5.7
2.6
2.6.1
2.6.2
2.6.3
2.6.4
2.7
2.7.1
2.7.2
2.8
3
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.2
3.3
3.4
3.5
3.6
4
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.4
4.5
4.5.1
4.5.2
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.3
5.4
5.5
Vector Table .................................................................................................................. 91
Exception Priorities ....................................................................................................... 92
Interrupt Priority Grouping .............................................................................................. 93
Exception Entry and Return ........................................................................................... 93
Fault Handling .............................................................................................................. 95
Fault Types ................................................................................................................... 96
Fault Escalation and Hard Faults .................................................................................... 96
Fault Status Registers and Fault Address Registers ........................................................ 97
Lockup ......................................................................................................................... 97
Power Management ...................................................................................................... 97
Entering Sleep Modes ................................................................................................... 98
Wake Up from Sleep Mode ............................................................................................ 98
Instruction Set Summary ............................................................................................... 99
Cortex-M3 Peripherals ......................................................................................... 102
Functional Description ................................................................................................. 102
System Timer (SysTick) ............................................................................................... 102
Nested Vectored Interrupt Controller (NVIC) .................................................................. 103
System Control Block (SCB) ........................................................................................ 105
Memory Protection Unit (MPU) ..................................................................................... 105
Register Map .............................................................................................................. 110
System Timer (SysTick) Register Descriptions .............................................................. 112
NVIC Register Descriptions .......................................................................................... 116
System Control Block (SCB) Register Descriptions ........................................................ 129
Memory Protection Unit (MPU) Register Descriptions .................................................... 158
JTAG Interface ...................................................................................................... 168
Block Diagram ............................................................................................................ 169
Signal Description ....................................................................................................... 169
Functional Description ................................................................................................. 170
JTAG Interface Pins ..................................................................................................... 170
JTAG TAP Controller ................................................................................................... 172
Shift Registers ............................................................................................................ 172
Operational Considerations .......................................................................................... 173
Initialization and Configuration ..................................................................................... 175
Register Descriptions .................................................................................................. 176
Instruction Register (IR) ............................................................................................... 176
Data Registers ............................................................................................................ 178
System Control ..................................................................................................... 180
Signal Description ....................................................................................................... 180
Functional Description ................................................................................................. 180
Device Identification .................................................................................................... 181
Reset Control .............................................................................................................. 181
Non-Maskable Interrupt ............................................................................................... 186
Power Control ............................................................................................................. 186
Clock Control .............................................................................................................. 187
System Control ........................................................................................................... 194
Initialization and Configuration ..................................................................................... 196
Register Map .............................................................................................................. 196
Register Descriptions .................................................................................................. 198
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January 21, 2012
Texas Instruments-Production Data