PR E LI MIN ARY
LM3S300 Microcontroller
DATA SHEE T
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Preliminary
October 01, 2007
LM3S300 Microcontroller
Table of Contents
About This Document .................................................................................................................... 15
Audience ..............................................................................................................................................
About This Manual ................................................................................................................................
Related Documents ...............................................................................................................................
Documentation Conventions ..................................................................................................................
15
15
15
15
17
21
21
22
23
23
24
24
25
26
27
27
29
29
29
30
30
30
30
30
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 ...................................................................................................... 17
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 ...................................................................................... 28
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 ....................................................................................................................... 34
Interrupts ............................................................................................................................ 36
JTAG Interface .................................................................................................................... 38
Block Diagram ..........................................................................................................................
Functional Description ...............................................................................................................
JTAG Interface Pins ..................................................................................................................
JTAG TAP Controller .................................................................................................................
Shift Registers ..........................................................................................................................
Operational Considerations ........................................................................................................
Initialization and Configuration ...................................................................................................
Register Descriptions ................................................................................................................
Instruction Register (IR) .............................................................................................................
Data Registers ..........................................................................................................................
39
39
40
41
42
42
43
44
44
46
6
6.1
6.1.1
6.1.2
System Control ................................................................................................................... 48
Functional Description ............................................................................................................... 48
Device Identification .................................................................................................................. 48
Reset Control ............................................................................................................................ 48
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Table of Contents
6.1.3
6.1.4
6.1.5
6.2
6.3
6.4
Power Control ...........................................................................................................................
Clock Control ............................................................................................................................
System Control .........................................................................................................................
Initialization and Configuration ...................................................................................................
Register Map ............................................................................................................................
Register Descriptions ................................................................................................................
51
51
54
54
55
56
7
7.1
7.2
7.2.1
7.2.2
7.3
7.3.1
7.3.2
7.4
7.5
7.6
Internal Memory ............................................................................................................... 103
Block Diagram ........................................................................................................................ 103
Functional Description ............................................................................................................. 103
SRAM Memory ........................................................................................................................ 103
Flash Memory ......................................................................................................................... 104
Flash Memory Initialization and Configuration ........................................................................... 106
Changing Flash Protection Bits ................................................................................................ 106
Flash Programming ................................................................................................................. 107
Register Map .......................................................................................................................... 107
Flash Register Descriptions (Flash Control Offset) ..................................................................... 108
Flash Register Descriptions (System Control Offset) .................................................................. 115
8
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.2
8.3
8.4
General-Purpose Input/Outputs (GPIOs) ....................................................................... 119
Functional Description ............................................................................................................. 119
Data Control ........................................................................................................................... 120
Interrupt Control ...................................................................................................................... 121
Mode Control .......................................................................................................................... 122
Pad Control ............................................................................................................................. 122
Identification ........................................................................................................................... 122
Initialization and Configuration ................................................................................................. 122
Register Map .......................................................................................................................... 123
Register Descriptions .............................................................................................................. 125
9
9.1
9.2
9.2.1
9.2.2
9.2.3
9.3
9.3.1
9.3.2
9.3.3
9.3.4
9.3.5
9.3.6
9.4
9.5
General-Purpose Timers ................................................................................................. 157
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 ..........................................................................................................................
158
158
158
158
160
164
164
165
165
166
166
167
167
168
193
193
194
194
10
10.1
10.2
10.3
10.4
Watchdog Timer ............................................................................................................... 193
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LM3S300 Microcontroller
10.5
Register Descriptions .............................................................................................................. 195
11
11.1
11.2
11.2.1
11.2.2
11.2.3
11.2.4
11.2.5
11.2.6
11.3
11.4
11.5
Universal Asynchronous Receivers/Transmitters (UARTs) ......................................... 216
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
Transmit/Receive Logic ...........................................................................................................
Baud-Rate Generation .............................................................................................................
Data Transmission ..................................................................................................................
FIFO Operation .......................................................................................................................
Interrupts ................................................................................................................................
Loopback Operation ................................................................................................................
Initialization and Configuration .................................................................................................
Register Map ..........................................................................................................................
Register Descriptions ..............................................................................................................
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
Bit Rate Generation .................................................................................................................
FIFO Operation .......................................................................................................................
Interrupts ................................................................................................................................
Frame Formats .......................................................................................................................
Initialization and Configuration .................................................................................................
Register Map ..........................................................................................................................
Register Descriptions ..............................................................................................................
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
I
2
C Bus Functional Overview ....................................................................................................
Available Speed Modes ...........................................................................................................
Interrupts ................................................................................................................................
Loopback Operation ................................................................................................................
Command Sequence Flow Charts ............................................................................................
Initialization and Configuration .................................................................................................
I
2
C Register Map .....................................................................................................................
Register Descriptions (I
2
C Master) ...........................................................................................
Register Descriptions (I2C Slave) .............................................................................................
Block Diagram ........................................................................................................................
Functional Description .............................................................................................................
Internal Reference Programming ..............................................................................................
Initialization and Configuration .................................................................................................
Register Map ..........................................................................................................................
Register Descriptions ..............................................................................................................
217
217
217
218
219
219
219
220
220
221
222
254
254
255
255
255
256
263
264
265
291
291
292
294
295
295
295
302
303
304
317
327
327
329
330
330
331
12
12.1
12.2
12.2.1
12.2.2
12.2.3
12.2.4
12.3
12.4
12.5
Synchronous Serial Interface (SSI) ................................................................................ 254
13
13.1
13.2
13.2.1
13.2.2
13.2.3
13.2.4
13.2.5
13.3
13.4
13.5
13.6
Inter-Integrated Circuit (I
2
C) Interface ............................................................................ 291
14
14.1
14.2
14.2.1
14.3
14.4
14.5
Analog Comparators ....................................................................................................... 326
October 01, 2007
Preliminary
5
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