at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 456
at91rm3400
Manufacturer Part Number
at91rm3400
Description
Atmel Advanced At91 Arm Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT91RM3400.pdf
(461 pages)
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1790A–ATARM–11/03
Two-wire Interface (TWI) ............................................................................. 251
Universal Synchronous Asynchronous Receiver Transceiver (USART) 267
Overview.......................................................................................................... 251
Block Diagram................................................................................................. 251
Application Block Diagram ............................................................................ 251
Product Dependencies................................................................................... 252
Functional Description................................................................................... 252
Two-wire Interface (TWI) User Interface ...................................................... 258
Overview.......................................................................................................... 267
Block Diagram................................................................................................. 268
Application Block Diagram ............................................................................ 269
I/O Lines Description ..................................................................................... 269
Product Dependencies................................................................................... 270
Functional Description................................................................................... 271
SPI Interrupt Disable Register...................................................................... 247
SPI Interrupt Mask Register ......................................................................... 248
SPI Chip Select Register.............................................................................. 249
I/O Lines....................................................................................................... 252
Power Management ..................................................................................... 252
Interrupt........................................................................................................ 252
Transfer Format ........................................................................................... 252
Modes of Operation...................................................................................... 253
Transmitting Data......................................................................................... 253
Read/Write Flowcharts................................................................................. 255
TWI Control Register.................................................................................... 259
TWI Master Mode Register .......................................................................... 260
TWI Internal Address Register ..................................................................... 261
TWI Clock Waveform Generator Register.................................................... 261
TWI Status Register ..................................................................................... 262
TWI Interrupt Enable Register...................................................................... 263
TWI Interrupt Disable Register ..................................................................... 264
TWI Interrupt Mask Register ........................................................................ 265
TWI Receive Holding Register ..................................................................... 266
TWI Transmit Holding Register .................................................................... 266
I/O Lines....................................................................................................... 270
Power Management ..................................................................................... 270
Interrupt........................................................................................................ 270
Baud Rate Generator ................................................................................... 271
Receiver and Transmitter Control ................................................................ 275
Synchronous and Asynchronous Modes...................................................... 275
ISO7816 Mode ............................................................................................. 285
IrDA Mode .................................................................................................... 287
RS485 Mode ................................................................................................ 290
AT91RM3400
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