AT91SAM7X256开发板原理图，PHY芯片为RTL8201,有串口，板上有SD卡接口，有SPI的FLASH和I2C的E2PROM-AT91SAM7X256 development board schematics, PHY chip RTL8201, a serial port, a SD card interface board, with SPI, I2C FLASH and the E2PROM

介绍AT91SAM7X256 SPI的基本用法： 利用SPI接口读取外部DATAFLASH的数据-Introduction AT91SAM7X256 SPI basic usage: Using the SPI interface to read external data DATAFLASH