SAM3U Datasheet, PDF (48/59 Pages) ATMEL Corporation – AT91SAM ARM-based Flash MCU

12.4
Universal Synchronous Asynchronous Receiver Transmitter (USART)
• Programmable Baud Rate Generator
• 5- to 9-bit full-duplex synchronous or asynchronous serial communications
– 1, 1.5 or 2 stop bits in Asynchronous Mode or 1 or 2 stop bits in Synchronous Mode
– Parity generation and error detection
– Framing error detection, overrun error detection
– MSB- or LSB-first
– Optional break generation and detection
– By 8 or by-16 over-sampling receiver frequency
– Hardware handshaking RTS-CTS
– Receiver time-out and transmitter timeguard
– Optional Multi-drop Mode with address generation and detection
– Optional Manchester Encoding
• RS485 with driver control signal
• ISO7816, T = 0 or T = 1 Protocols for interfacing with smart cards
– NACK handling, error counter with repetition and iteration limit
• SPI Mode
– Master or Slave
– Serial Clock programmable Phase and Polarity
– SPI Serial Clock (SCK) Frequency up to MCK/6
• IrDA modulation and demodulation
– Communication at up to 115.2 Kbps
• Test Modes
– Remote Loopback, Local Loopback, Automatic Echo
12.5
Serial Synchronous Controller (SSC)
• Provides serial synchronous communication links used in audio and telecom applications
(with CODECs in Master or Slave Modes, I²S, TDM Buses, Magnetic Card Reader, ...)
• Contains an independent receiver and transmitter and a common clock divider
• Offers a configurable frame sync and data length
• Receiver and transmitter can be programmed to start automatically or on detection of
different event on the frame sync signal
• Receiver and transmitter include a data signal, a clock signal and a frame synchronization
signal
12.6
Timer Counter (TC)
• Three 16-bit Timer Counter Channels
• Wide range of functions including:
– Frequency Measurement
– Event Counting
– Interval Measurement
48 SAM3U Series
6430ES–ATARM–22-Aug-11