LM3S1621 Datasheet, PDF (7/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1621 Microcontroller
12 Watchdog Timers ................................................................................................. 572
12.1 Block Diagram ............................................................................................................ 573
12.2 Functional Description ................................................................................................. 573
12.2.1 Register Access Timing ............................................................................................... 574
12.3 Initialization and Configuration ..................................................................................... 574
12.4 Register Map .............................................................................................................. 574
12.5 Register Descriptions .................................................................................................. 575
13 Analog-to-Digital Converter (ADC) ..................................................................... 597
13.1 Block Diagram ............................................................................................................ 598
13.2 Signal Description ....................................................................................................... 598
13.3 Functional Description ................................................................................................. 599
13.3.1 Sample Sequencers .................................................................................................... 599
13.3.2 Module Control ............................................................................................................ 600
13.3.3 Hardware Sample Averaging Circuit ............................................................................. 602
13.3.4 Analog-to-Digital Converter .......................................................................................... 603
13.3.5 Differential Sampling ................................................................................................... 605
13.3.6 Internal Temperature Sensor ........................................................................................ 608
13.3.7 Digital Comparator Unit ............................................................................................... 608
13.4 Initialization and Configuration ..................................................................................... 612
13.4.1 Module Initialization ..................................................................................................... 612
13.4.2 Sample Sequencer Configuration ................................................................................. 613
13.5 Register Map .............................................................................................................. 613
13.6 Register Descriptions .................................................................................................. 615
14 Universal Asynchronous Receivers/Transmitters (UARTs) ............................. 670
14.1 Block Diagram ............................................................................................................ 671
14.2 Signal Description ....................................................................................................... 671
14.3 Functional Description ................................................................................................. 673
14.3.1 Transmit/Receive Logic ............................................................................................... 673
14.3.2 Baud-Rate Generation ................................................................................................. 674
14.3.3 Data Transmission ...................................................................................................... 675
14.3.4 Serial IR (SIR) ............................................................................................................. 675
14.3.5 ISO 7816 Support ....................................................................................................... 676
14.3.6 Modem Handshake Support ......................................................................................... 676
14.3.7 LIN Support ................................................................................................................ 678
14.3.8 FIFO Operation ........................................................................................................... 679
14.3.9 Interrupts .................................................................................................................... 680
14.3.10 Loopback Operation .................................................................................................... 681
14.3.11 DMA Operation ........................................................................................................... 681
14.4 Initialization and Configuration ..................................................................................... 681
14.5 Register Map .............................................................................................................. 682
14.6 Register Descriptions .................................................................................................. 684
15 Synchronous Serial Interface (SSI) .................................................................... 734
15.1 Block Diagram ............................................................................................................ 735
15.2 Signal Description ....................................................................................................... 735
15.3 Functional Description ................................................................................................. 736
15.3.1 Bit Rate Generation ..................................................................................................... 737
15.3.2 FIFO Operation ........................................................................................................... 737
15.3.3 Interrupts .................................................................................................................... 737
January 21, 2012
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