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1745D–ATARM–04-Nov-05
AT91M55800A
16.2 Output Selection .............................................................................................112
16.3 I/O Levels .......................................................................................................112
16.4 Filters ..............................................................................................................112
16.5 Interrupts ........................................................................................................113
16.6 User Interface .................................................................................................113
16.7 Multi-driver (Open Drain) ................................................................................113
16.8 PIO Connection Tables .................................................................................115
16.9 PIO User Interface ..........................................................................................117
17 SF: Special Function Registers .......................................................... 128
17.1 Chip Identifier .................................................................................................128
17.2 SF User Interface ...........................................................................................128
18 USART: Universal Synchronous/ Asynchronous Receiver/Transmitter
132
18.1 Pin Description ...............................................................................................133
18.2 Baud Rate Generator .....................................................................................134
18.3 Receiver .........................................................................................................135
18.4 Transmitter .....................................................................................................137
18.5 Multi-drop Mode .............................................................................................137
18.6 Break ..............................................................................................................138
18.7 Peripheral Data Controller ..............................................................................140
18.8 Interrupt Generation .......................................................................................140
18.9 Channel Modes ..............................................................................................140
18.10 USART User Interface ..................................................................................142
19 TC: Timer Counter ............................................................................... 157
19.1 Signal Name Description ................................................................................159
19.2 Timer Counter Description .............................................................................160
19.3 Capture Operating Mode ................................................................................163
19.4 Waveform Operating Mode ............................................................................165
19.5 TC User Interface ...........................................................................................168
20 SPI: Serial Peripheral Interface ........................................................... 185
20.1 Pin Description ...............................................................................................185
20.2 Master Mode ..................................................................................................186
20.3 Slave Mode ....................................................................................................190
20.4 Data Transfer .................................................................................................191
20.5 Clock Generation ............................................................................................192