LM3S1621 Datasheet, PDF (8/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Table of Contents
15.3.4 Frame Formats ........................................................................................................... 738
15.3.5 DMA Operation ........................................................................................................... 745
15.4 Initialization and Configuration ..................................................................................... 746
15.5 Register Map .............................................................................................................. 747
15.6 Register Descriptions .................................................................................................. 748
16 Inter-Integrated Circuit (I²C) Interface ................................................................ 776
16.1 Block Diagram ............................................................................................................ 777
16.2 Signal Description ....................................................................................................... 777
16.3 Functional Description ................................................................................................. 778
16.3.1 I²C Bus Functional Overview ........................................................................................ 778
16.3.2 Available Speed Modes ............................................................................................... 780
16.3.3 Interrupts .................................................................................................................... 781
16.3.4 Loopback Operation .................................................................................................... 782
16.3.5 Command Sequence Flow Charts ................................................................................ 783
16.4 Initialization and Configuration ..................................................................................... 790
16.5 Register Map .............................................................................................................. 791
16.6 Register Descriptions (I²C Master) ............................................................................... 792
16.7 Register Descriptions (I²C Slave) ................................................................................. 805
17 Analog Comparators ............................................................................................ 814
17.1 Block Diagram ............................................................................................................ 814
17.2 Signal Description ....................................................................................................... 815
17.3 Functional Description ................................................................................................. 816
17.3.1 Internal Reference Programming .................................................................................. 816
17.4 Initialization and Configuration ..................................................................................... 818
17.5 Register Map .............................................................................................................. 819
17.6 Register Descriptions .................................................................................................. 819
18 Pin Diagram .......................................................................................................... 827
19 Signal Tables ........................................................................................................ 829
19.1 100-Pin LQFP Package Pin Tables ............................................................................... 830
19.2 108-Ball BGA Package Pin Tables ................................................................................ 856
19.3 Connections for Unused Signals ................................................................................... 883
20 Operating Characteristics ................................................................................... 885
21 Electrical Characteristics .................................................................................... 886
21.1 Maximum Ratings ....................................................................................................... 886
21.2 Recommended Operating Conditions ........................................................................... 886
21.3 Load Conditions .......................................................................................................... 887
21.4 JTAG and Boundary Scan ............................................................................................ 887
21.5 Power and Brown-Out ................................................................................................. 889
21.6 Reset ......................................................................................................................... 890
21.7 On-Chip Low Drop-Out (LDO) Regulator ....................................................................... 891
21.8 Clocks ........................................................................................................................ 891
21.8.1 PLL Specifications ....................................................................................................... 891
21.8.2 PIOSC Specifications .................................................................................................. 892
21.8.3 Internal 30-kHz Oscillator Specifications ....................................................................... 892
21.8.4 Hibernation Clock Source Specifications ....................................................................... 893
21.8.5 Main Oscillator Specifications ....................................................................................... 893
21.8.6 System Clock Specification with ADC Operation ............................................................ 894
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January 21, 2012
Texas Instruments-Production Data