AT91SAM_14 datasheet(37/50 Pages) ATMEL

37 / 50 page

SAM7S Series [DATASHEET]

6175KS–ATARM–25-Oct-12

10.5 Serial Peripheral Interface

Supports communication with external serial devices

Four chip selects with external decoder allow communication with up to 15 peripherals

Serial memories, such as DataFlash® and 3-wire EEPROMs

Serial peripherals, such as ADCs, DACs, LCD Controllers, CAN Controllers and Sensors

External co-processors

Master or slave serial peripheral bus interface

8- to 16-bit programmable data length per chip select

Programmable phase and polarity per chip select

Programmable transfer delays between consecutive transfers and between clock and data per chip select

Programmable delay between consecutive transfers

Selectable mode fault detection

Maximum frequency at up to Master Clock

10.6 Two-wire Interface

Master Mode only (SAM7S512/256/128/64/321/32)

Master, Multi-Master and Slave Mode support (SAM7S161/16)

General Call supported in Slave Mode (SAM7S161/16)

Compatibility with I2C compatible devices (refer to the TWI sections of the datasheet)

One, two or three bytes internal address registers for easy Serial Memory access

7-bit or 10-bit slave addressing

Sequential read/write operations

10.7 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

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

Modem Signals Management DTR-DSR-DCD-RI on USART1 (not present on SAM7S32/16)

Receiver time-out and transmitter timeguard

Multi-drop Mode with address generation and detection

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

IrDA modulation and demodulation

Communication at up to 115.2 Kbps

Test Modes

Remote Loopback, Local Loopback, Automatic Echo

AT91SAM 数据表(PDF) 37 Page - ATMEL Corporation

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