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11090BS–ATARM–22-Oct-13
SAM3S8/SD8 Summary
11.4 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
– Full modem line support on USART1 (DCD-DSR-DTR-RI)
• RS485 with driver control signal
• ISO7816, T=0orT=1Protocols 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/4
• IrDA modulation and demodulation
– Communication at up to 115.2 Kbps
• Test Modes
– Remote Loopback, Local Loopback, Automatic Echo
11.5 Synchronous Serial Controller (SSC)
• Provides serial synchronous communication links used in audio and telecom applications
(with CODECs in Master or Slave Modes, I
2
S, TDM Buses, Magnetic Card Reader)
• Contains an independent receiver and transmitter and a common clock divider
• Offers 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
11.6 Timer Counter (TC)
• Six 16-bit Timer Counter Channels
• Wide range of functions including:
– Frequency Measurement
– Event Counting
