13 Replies Latest reply on Jul 13, 2017 2:11 AM by winpennyjh_2588011

    S25FL256S Quad I/O Read problem


      Device: S25FL256SAGMF1000




      I'm using an STM32F765 in Quad QSPI mode with the command QIOR (EBh) to read the S25FL256S.


      However, all bytes look like 0x88 !


      Is there a status read command I can use in QSPI mode ?


      The device is a new part and the problem is on more than one board.


      I have attached a signal trace of CS, SCK, IO0, IO1, IO2, IO3 (Read capture.png)


      What could be wrong please?