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LM3S8970-EGZ80-A2T Datasheet(PDF) 3 Page - Texas Instruments |
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LM3S8970-EGZ80-A2T Datasheet(HTML) 3 Page - Texas Instruments |
3 / 554 page Table of Contents Revision History ............................................................................................................................. 18 About This Document .................................................................................................................... 22 Audience .............................................................................................................................................. 22 About This Manual ................................................................................................................................ 22 Related Documents ............................................................................................................................... 22 Documentation Conventions .................................................................................................................. 23 1 Architectural Overview .......................................................................................... 25 1.1 Product Features .......................................................................................................... 25 1.2 Target Applications ........................................................................................................ 32 1.3 High-Level Block Diagram ............................................................................................. 32 1.4 Functional Overview ...................................................................................................... 34 1.4.1 ARM Cortex™-M3 ......................................................................................................... 34 1.4.2 Motor Control Peripherals .............................................................................................. 34 1.4.3 Serial Communications Peripherals ................................................................................ 35 1.4.4 System Peripherals ....................................................................................................... 37 1.4.5 Memory Peripherals ...................................................................................................... 37 1.4.6 Additional Features ....................................................................................................... 38 1.4.7 Hardware Details .......................................................................................................... 39 2 ARM Cortex-M3 Processor Core ........................................................................... 40 2.1 Block Diagram .............................................................................................................. 41 2.2 Functional Description ................................................................................................... 41 2.2.1 Serial Wire and JTAG Debug ......................................................................................... 41 2.2.2 Embedded Trace Macrocell (ETM) ................................................................................. 42 2.2.3 Trace Port Interface Unit (TPIU) ..................................................................................... 42 2.2.4 ROM Table ................................................................................................................... 42 2.2.5 Memory Protection Unit (MPU) ....................................................................................... 42 2.2.6 Nested Vectored Interrupt Controller (NVIC) .................................................................... 42 3 Memory Map ........................................................................................................... 46 4 Interrupts ................................................................................................................. 48 5 JTAG Interface ........................................................................................................ 51 5.1 Block Diagram .............................................................................................................. 52 5.2 Functional Description ................................................................................................... 52 5.2.1 JTAG Interface Pins ...................................................................................................... 52 5.2.2 JTAG TAP Controller ..................................................................................................... 54 5.2.3 Shift Registers .............................................................................................................. 55 5.2.4 Operational Considerations ............................................................................................ 55 5.3 Initialization and Configuration ....................................................................................... 58 5.4 Register Descriptions .................................................................................................... 58 5.4.1 Instruction Register (IR) ................................................................................................. 58 5.4.2 Data Registers .............................................................................................................. 60 6 System Control ....................................................................................................... 63 6.1 Functional Description ................................................................................................... 63 6.1.1 Device Identification ...................................................................................................... 63 6.1.2 Reset Control ................................................................................................................ 63 3 June 22, 2010 Texas Instruments-Production Data Stellaris® LM3S8970 Microcontroller |
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