11 Replies Latest reply on Apr 8, 2019 8:03 PM by sksldk23_4095996

    hi, I tried to solve the problem that the S25FL256SAGNFI001(QUAR SPI FLASH) IS NOT NORMAL WORKING.

    sksldk23_4095996

      I have tried to solve the problem that the S25FL256SAGNFI001(WSON, QUAR SPI FLASH) IS NOT NORMAL WORKING.

      The driver code is normal with S25FL256SAGMFI01(16 SSOP) on old PCB version.

      I changed the chipset to the  S25FL256SAGNFI001(8 WSON) for new PCB but it has not worked with the same driver code.

      According to the data sheet, there seems not to be different between two chipset except their type, number of pin and package size.

      We tried to  jumper by wire from the pads on the new PCB to the 16 SSOP chipset pins. It is normal.

      so, the patterns of the new PCB appear to be normal.

      The problem is verification error.

      I neet to help....