LM3S1G21 Datasheet, PDF (7/955 Pages) Texas Instruments – Stellaris® LM3S1G21 Microcontroller

Stellaris^® LM3S1G21 Microcontroller
12 Watchdog Timers ................................................................................................. 577
12.1 Block Diagram ............................................................................................................ 578
12.2 Functional Description ................................................................................................. 578
12.2.1 Register Access Timing ............................................................................................... 579
12.3 Initialization and Configuration ..................................................................................... 579
12.4 Register Map .............................................................................................................. 579
12.5 Register Descriptions .................................................................................................. 580
13 Analog-to-Digital Converter (ADC) ..................................................................... 602
13.1 Block Diagram ............................................................................................................ 603
13.2 Signal Description ....................................................................................................... 603
13.3 Functional Description ................................................................................................. 604
13.3.1 Sample Sequencers .................................................................................................... 604
13.3.2 Module Control ............................................................................................................ 605
13.3.3 Hardware Sample Averaging Circuit ............................................................................. 607
13.3.4 Analog-to-Digital Converter .......................................................................................... 608
13.3.5 Differential Sampling ................................................................................................... 612
13.3.6 Internal Temperature Sensor ........................................................................................ 614
13.3.7 Digital Comparator Unit ............................................................................................... 615
13.4 Initialization and Configuration ..................................................................................... 619
13.4.1 Module Initialization ..................................................................................................... 619
13.4.2 Sample Sequencer Configuration ................................................................................. 620
13.5 Register Map .............................................................................................................. 620
13.6 Register Descriptions .................................................................................................. 622
14 Universal Asynchronous Receivers/Transmitters (UARTs) ............................. 678
14.1 Block Diagram ............................................................................................................ 679
14.2 Signal Description ....................................................................................................... 679
14.3 Functional Description ................................................................................................. 681
14.3.1 Transmit/Receive Logic ............................................................................................... 681
14.3.2 Baud-Rate Generation ................................................................................................. 682
14.3.3 Data Transmission ...................................................................................................... 683
14.3.4 Serial IR (SIR) ............................................................................................................. 683
14.3.5 ISO 7816 Support ....................................................................................................... 684
14.3.6 Modem Handshake Support ......................................................................................... 684
14.3.7 LIN Support ................................................................................................................ 686
14.3.8 FIFO Operation ........................................................................................................... 687
14.3.9 Interrupts .................................................................................................................... 688
14.3.10 Loopback Operation .................................................................................................... 689
14.3.11 DMA Operation ........................................................................................................... 689
14.4 Initialization and Configuration ..................................................................................... 689
14.5 Register Map .............................................................................................................. 690
14.6 Register Descriptions .................................................................................................. 692
15 Synchronous Serial Interface (SSI) .................................................................... 742
15.1 Block Diagram ............................................................................................................ 743
15.2 Signal Description ....................................................................................................... 743
15.3 Functional Description ................................................................................................. 744
15.3.1 Bit Rate Generation ..................................................................................................... 745
15.3.2 FIFO Operation ........................................................................................................... 745
15.3.3 Interrupts .................................................................................................................... 745
January 22, 2012
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