Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

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SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]

11063K–ATARM–05-Nov-13

The USART is capable of managing several types of serial synchronous or asynchronous communications. 

It supports the following communication modes: 



5- to 9-bit full-duplex asynchronous serial communication



MSB- or LSB-first



1, 1.5 or 2 stop bits



Parity even, odd, marked, space or none



By 8 or by 16 over-sampling receiver frequency



Optional hardware handshaking



Optional break management



Optional multidrop serial communication



High-speed 5- to 9-bit full-duplex synchronous serial communication 



MSB- or LSB-first



1 or 2 stop bits



Parity even, odd, marked, space or none



By 8 or by 16 over-sampling frequency



Optional hardware handshaking



Optional break management



Optional multidrop serial communication



RS485 with driver control signal



ISO7816, T0 or T1 protocols for interfacing with smart cards



NACK handling, error counter with repetition and iteration limit, inverted data.



InfraRed IrDA Modulation and Demodulation



SPI Mode



Master or Slave



Serial Clock Programmable Phase and Polarity



SPI Serial Clock (SCK) Frequency up to Internal Clock Frequency MCK/6



LIN Mode



Compliant with LIN 1.3 and LIN 2.0 specifications



Master or Slave



Processing of frames with up to 256 data bytes



Response Data length can be configurable or defined automatically by the Identifier



Self synchronization in Slave node configuration



Automatic processing and verification of the “Synch Break” and the “Synch Field”



The “Synch Break” is detected even if it is partially superimposed with a data byte



Automatic Identifier parity calculation/sending and verification



Parity sending and verification can be disabled



Automatic Checksum calculation/sending and verification



Checksum sending and verification can be disabled



Support both “Classic” and “Enhanced” checksum types



Full LIN error checking and reporting



Frame Slot Mode: Master allocates slots to the scheduled frames automatically



Generation of the Wakeup signal



Test modes



Remote loopback, local loopback, automatic echo