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EPCQ128A Device ID 问题

ANi
Beginner
343 Views

​咨询一个关于识别FLASH的问题:同一个的产品不同批次的板子用了EPCS128和EPCQ128A两种flash芯片,

现在发现由于这两个芯片sector size不同,所以在擦除时需要对应不同的代码,

客户想做一个兼容的固件 通过程序来识别到底板子上用的是EPCS128还是EPCQ128A芯片,

查看两个FLASH手册,通过0x9F命令读出device ID,这两个芯片的ID是一样的 都是”0001 1000”

 

咨询还有没有其他方式,可以通过程序读取某些寄存器或者某些方法,来判断出到底使用的是EPCS128还是EPCQ128A芯片?

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1 Reply
JohnT_Intel
Employee
205 Views

Hi,

 

May I know how do you read the device ID? Are you using your own IP to read? if yes, when you read the device ID, you can use the 3 dummy bytes to differentiate it.

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