PR E LI MIN ARY
LM3S3748 Microcontroller
DATA SHEE T
DS-LM3S3 748-2 83 0
C opyr igh t
©
2 00 7-2 00 8 L umin ary Mi cro , In c.
Legal Disclaimers and Trademark Information
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH LUMINARY MICRO PRODUCTS. NO LICENSE, EXPRESS OR
IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT
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.
LUMINARY MICRO'S PRODUCTS ARE NOT INTENDED FOR USE IN MEDICAL, LIFE SAVING, OR LIFE-SUSTAINING APPLICATIONS.
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
©
2007-2008 Luminary Micro, Inc. All rights reserved. Stellaris, Luminary Micro, and the Luminary Micro logo are registered 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
2
Preliminary
April 08, 2008
LM3S3748 Microcontroller
Table of Contents
About This Document .................................................................................................................... 23
Audience ..............................................................................................................................................
About This Manual ................................................................................................................................
Related Documents ...............................................................................................................................
Documentation Conventions ..................................................................................................................
23
23
23
23
26
33
34
35
35
36
37
37
39
39
40
41
43
43
44
44
44
44
44
45
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
1.4.8
Architectural Overview ...................................................................................................... 26
Product Features ......................................................................................................................
Target Applications ....................................................................................................................
High-Level Block Diagram .........................................................................................................
Functional Overview ..................................................................................................................
ARM Cortex™-M3 .....................................................................................................................
Motor Control Peripherals ..........................................................................................................
Analog Peripherals ....................................................................................................................
Serial Communications Peripherals ............................................................................................
System Peripherals ...................................................................................................................
Memory Peripherals ..................................................................................................................
Additional Features ...................................................................................................................
Hardware Details ......................................................................................................................
Block Diagram ..........................................................................................................................
Functional Description ...............................................................................................................
Serial Wire and JTAG Debug .....................................................................................................
Embedded Trace Macrocell (ETM) .............................................................................................
Trace Port Interface Unit (TPIU) .................................................................................................
ROM Table ...............................................................................................................................
Memory Protection Unit (MPU) ...................................................................................................
Nested Vectored Interrupt Controller (NVIC) ................................................................................
2
2.1
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
ARM Cortex-M3 Processor Core ...................................................................................... 42
3
4
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
Memory Map ....................................................................................................................... 48
Interrupts ............................................................................................................................ 51
JTAG Interface .................................................................................................................... 54
Block Diagram ..........................................................................................................................
Functional Description ...............................................................................................................
JTAG Interface Pins ..................................................................................................................
JTAG TAP Controller .................................................................................................................
Shift Registers ..........................................................................................................................
Operational Considerations ........................................................................................................
Initialization and Configuration ...................................................................................................
Register Descriptions ................................................................................................................
Instruction Register (IR) .............................................................................................................
Data Registers ..........................................................................................................................
55
55
56
57
58
58
61
61
61
63
6
6.1
6.1.1
6.1.2
System Control ................................................................................................................... 66
Functional Description ............................................................................................................... 66
Device Identification .................................................................................................................. 66
Reset Control ............................................................................................................................ 66
April 08, 2008
Preliminary
3
Table of Contents
6.1.3
6.1.4
6.1.5
6.1.6
6.2
6.3
6.4
Non-Maskable Interrupt .............................................................................................................
Power Control ...........................................................................................................................
Clock Control ............................................................................................................................
System Control .........................................................................................................................
Initialization and Configuration ...................................................................................................
Register Map ............................................................................................................................
Register Descriptions ................................................................................................................
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
Register Access Timing ...........................................................................................................
Clock Source ..........................................................................................................................
Battery Management ...............................................................................................................
Real-Time Clock ......................................................................................................................
Non-Volatile Memory ...............................................................................................................
Power Control .........................................................................................................................
Interrupts and Status ...............................................................................................................
Initialization and Configuration .................................................................................................
Initialization .............................................................................................................................
RTC Match Functionality (No Hibernation) ................................................................................
RTC Match/Wake-Up from Hibernation .....................................................................................
External Wake-Up from Hibernation ..........................................................................................
RTC/External Wake-Up from Hibernation ..................................................................................
Register Reset ........................................................................................................................
Register Map ..........................................................................................................................
Register Descriptions ..............................................................................................................
69
69
69
73
74
75
76
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
7.3.6
7.4
7.5
Hibernation Module .......................................................................................................... 137
138
138
138
139
141
142
142
142
143
143
143
144
144
144
144
144
145
146
8
8.1
8.2
8.2.1
8.2.2
8.2.3
8.3
8.3.1
8.3.2
8.4
8.5
8.6
8.7
Internal Memory ............................................................................................................... 160
Block Diagram ........................................................................................................................ 160
Functional Description ............................................................................................................. 160
SRAM Memory ........................................................................................................................ 160
ROM Memory ......................................................................................................................... 161
Flash Memory ......................................................................................................................... 161
Flash Memory Initialization and Configuration ........................................................................... 162
Flash Programming ................................................................................................................. 162
Nonvolatile Register Programming ........................................................................................... 163
Register Map .......................................................................................................................... 164
ROM Register Descriptions (System Control Offset) .................................................................. 165
Flash Register Descriptions (Flash Control Offset) ..................................................................... 166
Flash Register Descriptions (System Control Offset) .................................................................. 173
9
9.1
9.2
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
9.2.6
Micro Direct Memory Access (μDMA) ............................................................................ 189
Block Diagram ........................................................................................................................ 190
Functional Description ............................................................................................................. 190
Channel Assigments ................................................................................................................ 191
Priority .................................................................................................................................... 191
Arbitration Size ........................................................................................................................ 191
Request Types ........................................................................................................................ 192
Channel Configuration ............................................................................................................. 192
Transfer Modes ....................................................................................................................... 194
4
Preliminary
April 08, 2008
LM3S3748 Microcontroller
9.2.7
9.2.8
9.2.9
9.2.10
9.3
9.3.1
9.3.2
9.3.3
9.3.4
9.4
9.5
9.6
Transfer Size and Increment ....................................................................................................
Peripheral Interface .................................................................................................................
Software Request ....................................................................................................................
Interrupts and Errors ................................................................................................................
Initialization and Configuration .................................................................................................
Module Initialization .................................................................................................................
Configuring a Memory-to-Memory Transfer ...............................................................................
Configuring a Peripheral for Simple Transmit ............................................................................
Configuring a Peripheral for Ping-Pong Receive ........................................................................
Register Map ..........................................................................................................................
μDMA Channel Control Structure .............................................................................................
μDMA Register Descriptions ....................................................................................................
202
202
202
203
203
203
203
205
206
209
210
216
10
10.1
10.1.1
10.1.2
10.1.3
10.1.4
10.1.5
10.1.6
10.2
10.3
10.4
General-Purpose Input/Outputs (GPIOs) ....................................................................... 250
Functional Description ............................................................................................................. 250
Data Control ........................................................................................................................... 252
Interrupt Control ...................................................................................................................... 253
Mode Control .......................................................................................................................... 254
Commit Control ....................................................................................................................... 254
Pad Control ............................................................................................................................. 254
Identification ........................................................................................................................... 255
Initialization and Configuration ................................................................................................. 255
Register Map .......................................................................................................................... 256
Register Descriptions .............................................................................................................. 258
11
11.1
11.2
11.2.1
11.2.2
11.2.3
11.3
11.3.1
11.3.2
11.3.3
11.3.4
11.3.5
11.3.6
11.4
11.5
General-Purpose Timers ................................................................................................. 297
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
GPTM Reset Conditions ..........................................................................................................
32-Bit Timer Operating Modes ..................................................................................................
16-Bit Timer Operating Modes ..................................................................................................
Initialization and Configuration .................................................................................................
32-Bit One-Shot/Periodic Timer Mode .......................................................................................
32-Bit Real-Time Clock (RTC) Mode .........................................................................................
16-Bit One-Shot/Periodic Timer Mode .......................................................................................
16-Bit Input Edge Count Mode .................................................................................................
16-Bit Input Edge Timing Mode ................................................................................................
16-Bit PWM Mode ...................................................................................................................
Register Map ..........................................................................................................................
Register Descriptions ..............................................................................................................
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
Initialization and Configuration .................................................................................................
Register Map ..........................................................................................................................
Register Descriptions ..............................................................................................................
297
298
299
299
300
304
304
305
305
306
306
307
307
308
331
331
332
332
333
12
12.1
12.2
12.3
12.4
12.5
Watchdog Timer ............................................................................................................... 331
13
13.1
13.2
Analog-to-Digital Converter (ADC) ................................................................................. 354
Block Diagram ........................................................................................................................ 355
Functional Description ............................................................................................................. 355
April 08, 2008
Preliminary
5
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
