6 Replies Latest reply on Nov 21, 2017 12:59 AM by sandy-stephen_2882196

    Cannot access first 64K sector of S25FL256 FLASH

    sandy-stephen_2882196

      Hi,

      I am attempting to erase, write and read to/from the first 64K sector of FLASH (sector address 0x0). I can do this successfully on subsequent sectors without issue.

       

      I have confirmed that the BP bits in the status register are all set to 0, and that reading the DYB access register (using 0xe0 command and address 0x0) results in 0xff, indicating the sector is not protected from erase/write.

       

      I think it is the first 32bytes in the sector that are causing the issue but I don't know why

       

      Thank you