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AT91SAM9261S_1 Datasheet, PDF (33/709 Pages) ATMEL Corporation – AT91 ARM Thumb-based Microcontrollers | |||
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AT91SAM9261S
10.7
Serial Peripheral Interface
⢠Supports communication with serial external devices
â Four chip selects with external decoder support allow communication with up to
fifteen peripherals
â Serial memories, such as DataFlash and 3-wire EEPROMs
â Serial peripherals, such as ADCs, DACs, LCD Controllers, CAN Controllers and
Sensors
â External co-processors
⢠Master or slave serial peripheral bus interface
â 8- to 16-bit programmable data length per chip select
â Programmable phase and polarity per chip select
â Programmable transfer delays between consecutive transfers and between clock
and data per chip select
â Programmable delay between consecutive transfers
â Selectable mode fault detection
⢠Very fast transfers supported
â Transfers with baud rates up to MCK
â The chip select line may be left active to speed up transfers on the same device
10.8
Two-wire Interface
⢠Compatibility with standard two-wire serial memory
⢠One, two or three bytes for slave address
⢠Sequential read/write operations
10.9 USART
⢠Programmable Baud Rate Generator
⢠5- to 9-bit full-duplex synchronous or asynchronous serial communications
â 1, 1.5 or 2 stop bits in Asynchronous Mode or 1 or 2 stop bits in Synchronous Mode
â Parity generation and error detection
â Framing error detection, overrun error detection
â MSB- or LSB-first
â Optional break generation and detection
â By-8 or by-16 over-sampling receiver frequency
â Hardware handshaking RTS-CTS
â Receiver time-out and transmitter timeguard
â Optional Multi-drop Mode with address generation and detection
â Optional Manchester Encoding
⢠RS485 with driver control signal
⢠ISO7816, T = 0 or T = 1 Protocols for interfacing with smart cards
â NACK handling, error counter with repetition and iteration limit
⢠IrDA modulation and demodulation
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6242EâATARMâ11-Sep09
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