Problem with erasing and overwriting FLASH data

[Nickname400_O]

Posted on June 15, 2013 at 12:58

Hi,

After writing in FLASH using FLASH_ProgramWord(uint32_t Address,Data). I can't overwrite that address data completely using FLASH_ProgramWord(Address,0xFFFFFFFF) or FLASH_ProgramWord(Address,Newdata);.In case of erasing it with FFFFFFFF, data on that address does not change.In case of overwrite with other data, it only replace it with some wrong data. 

[Tesla DeLorean]

Posted on June 15, 2013 at 13:34

Cross Posted

I can't erase that Address data by using FLASH_ProgarmWord(uint32_t Address,0xFFFFFFFF).

Because it doesn't work that way, you have to erase a whole SECTOR (16,64 or 128KB depending on the address range).