CAT25256(ON SEMI)/AT25256(ATMENL):256Kb,SPI接口的EEPROM;MARK"25256"
,
http://www.smdmark.com/Contents/Images/logo.png
W25Q256:256Mb ,SPI接口的FLASH,https://blog.csdn.net/ysh1042436059/article/details/81181397
EEROM:
M24C02与AT24C02的区别：在stop条件不同(Tchdh=4US,要求SCL拉高4us后拉高SDA)，具体参考
