LM3S8938 Datasheet PDF - Luminary Micro


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LM3S8938
Luminary Micro

Part Number LM3S8938
Description Microcontroller
Page 30 Pages

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LUMINARY MICRO CONFIDENTIAL-ADVANCE PRODUCT INFORMATION
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LM3S8938 Microcontroller
DATA SHEET
DS-LM3S8938-01
Copyright © 2007 Luminary Micro, Inc.



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INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH LUMINARY MICRO PRODUCTS. NO LICENSE, EXPRESS OR
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AS PROVIDED IN LUMINARY MICRO'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, LUMINARY MICRO ASSUMES NO
LIABILITY WHATSOEVER, AND LUMINARY MICRO DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR
USE OF LUMINARY MICRO'S PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR
PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
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Luminary Micro may make changes to specifications and product descriptions at any time, without notice. Contact your local Luminary Micro sales office
or your distributor to obtain the latest specifications before placing your product order.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Luminary Micro reserves these
for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
Copyright © 2007 Luminary Micro, Inc. All rights reserved. Stellaris is a registered trademark and Luminary Micro and the Luminary Micro logo are
trademarks of Luminary Micro, Inc. or its subsidiaries in the United States and other countries. ARM and Thumb are registered trademarks and Cortex
is a trademark of ARM Limited. Other names and brands may be claimed as the property of others.
Luminary Micro, Inc.
108 Wild Basin, Suite 350
Austin, TX 78746
Main: +1-512-279-8800
Fax: +1-512-279-8879
http://www.luminarymicro.com
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LM3S8938 Microcontroller
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Table of Contents
About This Document .................................................................................................................... 20
Audience .............................................................................................................................................. 20
About This Manual ................................................................................................................................ 20
Related Documents ............................................................................................................................... 20
Documentation Conventions .................................................................................................................. 20
1
1.1
1.2
1.3
1.4
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.4.6
1.4.7
Overview ............................................................................................................................. 22
Product Features ...................................................................................................................... 22
Target Applications .................................................................................................................... 27
High-Level Block Diagram ......................................................................................................... 27
Functional Overview .................................................................................................................. 28
ARM Cortex™-M3 ..................................................................................................................... 29
Motor Control Peripherals .......................................................................................................... 29
Serial Communications Peripherals ............................................................................................ 30
System Peripherals ................................................................................................................... 31
Memory Peripherals .................................................................................................................. 32
Additional Features ................................................................................................................... 33
Hardware Details ...................................................................................................................... 33
2
2.1
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
Cortex-M3 Core .................................................................................................................. 35
Block Diagram .......................................................................................................................... 36
Functional Description ............................................................................................................... 36
Serial Wire and JTAG Debug ..................................................................................................... 36
Embedded Trace Macrocell (ETM) ............................................................................................. 37
Trace Port Interface Unit (TPIU) ................................................................................................. 37
ROM Table ............................................................................................................................... 37
Memory Protection Unit (MPU) ................................................................................................... 37
Nested Vectored Interrupt Controller (NVIC) ................................................................................ 37
3 Memory Map ....................................................................................................................... 41
4 Interrupts ............................................................................................................................ 43
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.3
5.4
5.4.1
5.4.2
JTAG .................................................................................................................................... 46
Block Diagram .......................................................................................................................... 47
Functional Description ............................................................................................................... 47
JTAG Interface Pins .................................................................................................................. 48
JTAG TAP Controller ................................................................................................................. 49
Shift Registers .......................................................................................................................... 50
Operational Considerations ........................................................................................................ 50
Initialization and Configuration ................................................................................................... 53
Register Descriptions ................................................................................................................ 53
Instruction Register (IR) ............................................................................................................. 53
Data Registers .......................................................................................................................... 55
6
6.1
6.1.1
6.1.2
6.1.3
System Control ................................................................................................................... 57
Functional Description ............................................................................................................... 57
Device Identification .................................................................................................................. 57
Reset Control ............................................................................................................................ 57
Power Control ........................................................................................................................... 60
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Table of Contents
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6.1.4
6.1.5
6.2
6.3
6.4
7
7.1
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.3
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.4
7.5
8
8.1
8.2
8.2.1
8.2.2
8.3
8.3.1
8.3.2
8.4
8.5
8.6
9
9.1
9.1.1
9.1.2
9.1.3
9.1.4
9.1.5
9.1.6
9.2
9.3
9.4
10
10.1
Clock Control ............................................................................................................................ 60
System Control ......................................................................................................................... 62
Initialization and Configuration ................................................................................................... 63
Register Map ............................................................................................................................ 63
Register Descriptions ................................................................................................................ 64
Hibernation Module .......................................................................................................... 113
Block Diagram ........................................................................................................................ 114
Functional Description ............................................................................................................. 114
Register Access Timing ........................................................................................................... 114
Clock Source .......................................................................................................................... 115
Battery Management ............................................................................................................... 115
Real-Time Clock ...................................................................................................................... 115
Non-Volatile Memory ............................................................................................................... 116
Power Control ......................................................................................................................... 116
Interrupts and Status ............................................................................................................... 116
Initialization and Configuration ................................................................................................. 116
Initialization ............................................................................................................................. 117
RTC Match Functionality (No Hibernation) ................................................................................ 117
RTC Match/Wake-Up from Hibernation ..................................................................................... 117
External Wake-Up from Hibernation .......................................................................................... 117
RTC/External Wake-Up from Hibernation .................................................................................. 118
Register Map .......................................................................................................................... 118
Register Descriptions .............................................................................................................. 118
Internal Memory ............................................................................................................... 131
Block Diagram ........................................................................................................................ 131
Functional Description ............................................................................................................. 131
SRAM Memory ........................................................................................................................ 131
Flash Memory ......................................................................................................................... 132
Flash Memory Initialization and Configuration ........................................................................... 133
Flash Programming ................................................................................................................. 133
Nonvolatile Register Programming ........................................................................................... 134
Register Map .......................................................................................................................... 134
Flash Control Offset ................................................................................................................. 135
System Control Offset .............................................................................................................. 142
GPIO .................................................................................................................................. 155
Function Description ................................................................................................................ 155
Data Control ........................................................................................................................... 155
Interrupt Control ...................................................................................................................... 156
Mode Control .......................................................................................................................... 157
Commit Control ....................................................................................................................... 157
Pad Control ............................................................................................................................. 157
Identification ........................................................................................................................... 158
Initialization and Configuration ................................................................................................. 158
Register Map .......................................................................................................................... 159
Register Descriptions .............................................................................................................. 161
Timers ............................................................................................................................... 196
Block Diagram ........................................................................................................................ 197
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