说明：  常用串行EEPROM的编程应用，SPI总线(Serial Peripheral Interface串行外围设备接口总线)是三线式的串行总线，是由摩托罗拉公司所研发，使用三线进行数据传输，分别是SCK时钟引脚，SI数据输入引脚和SO数据输出引脚。
(Commonly used application of serial EEPROM programming, SPI bus (Serial Peripheral Interface Serial Peripheral Interface Bus) is a three wire serial bus is developed by Motorola, the use of third-line data transmission, namely the SCK clock pin, SI data input pin and the SO data output pin.)