LM3S2939 Datasheet, PDF (6/749 Pages) Texas Instruments – Stellaris® LM3S2939 Microcontroller

Table of Contents
9.3.2
9.3.3
9.4
9.4.1
9.4.2
9.4.3
9.4.4
9.4.5
9.4.6
9.5
9.6
32-Bit Timer Operating Modes ...................................................................................... 336
16-Bit Timer Operating Modes ...................................................................................... 338
Initialization and Configuration ..................................................................................... 341
32-Bit One-Shot/Periodic Timer Mode ........................................................................... 342
32-Bit Real-Time Clock (RTC) Mode ............................................................................. 342
16-Bit One-Shot/Periodic Timer Mode ........................................................................... 342
16-Bit Input Edge Count Mode ..................................................................................... 343
16-Bit Input Edge Timing Mode .................................................................................... 343
16-Bit PWM Mode ....................................................................................................... 344
Register Map .............................................................................................................. 344
Register Descriptions .................................................................................................. 345
10 Watchdog Timer ................................................................................................... 370
10.1 Block Diagram ............................................................................................................ 371
10.2 Functional Description ................................................................................................. 371
10.3 Initialization and Configuration ..................................................................................... 372
10.4 Register Map .............................................................................................................. 372
10.5 Register Descriptions .................................................................................................. 373
11
11.1
11.2
11.3
11.3.1
11.3.2
11.3.3
11.3.4
11.3.5
11.3.6
11.3.7
11.4
11.4.1
11.4.2
11.5
11.6
Analog-to-Digital Converter (ADC) ..................................................................... 394
Block Diagram ............................................................................................................ 394
Signal Description ....................................................................................................... 395
Functional Description ................................................................................................. 396
Sample Sequencers .................................................................................................... 396
Module Control ............................................................................................................ 396
Hardware Sample Averaging Circuit ............................................................................. 397
Analog-to-Digital Converter .......................................................................................... 397
Differential Sampling ................................................................................................... 398
Test Modes ................................................................................................................. 400
Internal Temperature Sensor ........................................................................................ 400
Initialization and Configuration ..................................................................................... 401
Module Initialization ..................................................................................................... 401
Sample Sequencer Configuration ................................................................................. 401
Register Map .............................................................................................................. 402
Register Descriptions .................................................................................................. 403
12 Universal Asynchronous Receivers/Transmitters (UARTs) ............................. 431
12.1 Block Diagram ............................................................................................................ 432
12.2 Signal Description ....................................................................................................... 432
12.3 Functional Description ................................................................................................. 433
12.3.1 Transmit/Receive Logic ............................................................................................... 433
12.3.2 Baud-Rate Generation ................................................................................................. 434
12.3.3 Data Transmission ...................................................................................................... 434
12.3.4 Serial IR (SIR) ............................................................................................................. 435
12.3.5 FIFO Operation ........................................................................................................... 436
12.3.6 Interrupts .................................................................................................................... 436
12.3.7 Loopback Operation .................................................................................................... 437
12.3.8 IrDA SIR block ............................................................................................................ 438
12.4 Initialization and Configuration ..................................................................................... 438
12.5 Register Map .............................................................................................................. 439
12.6 Register Descriptions .................................................................................................. 440
6
June 18, 2012
Texas Instruments-Production Data