我自己编写的SPI访问EEPROM的25AA045源代码，里面有PROTEUS的仿真，可以查看SPI时序，还有逻辑分析，有兴趣的朋友可以看看！-I am prepared SPI visit EEPROM of 25AA045 source code, which has PROTEUS simulation, you can view the SPI time series, as well as logical analysis, interested friends can see!