[Device] Winbond SPI flash naming rule

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For the Winbond SPI flash devices. There are separate to 2 type devices.

Default QE(Quad Enable) bit disabled->SG naming is W25Q128JV.

Default QE(Quad Enable) bit enabled->SG naming is W25Q128JV-Q.

The default Status Register-2 (Bit 2=QE bit will be 1 and can't be reset to 0).

Therefore, the SR-2 will read back as 02.

Please make sure your part number then choose the corresponding algorithm for programming.

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Jason

2020年10月07日

Maybe you have any solution ? Because I got the same problem ... Thanks.

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Rickey Chien

2020年10月07日

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Hi Jason, For the Winbond devices. If you purchase the part number with Q and it means the QE bit is default enabled and can't be changed. The solution is choosing the algorithm with -Q or the alternative solution is choosing the non-Q part number and it's algorithm but set the QE bit for programming. Please let us know if this answer your questions. Thank you.

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[Device] Winbond SPI flash naming rule

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