I'm working with DFlash in MC9S12XET256.
The address starts from 0x10_0000 to 0x10_7FFF.
At every start of the sector, for 4 bytes I can see few fixed values (FA CF 00 00 / FF FF 00 00).
I'm aware that these are the sector header. It gives information about Erase count, sector state etc.
1) I need the complete break up of this sector header bytes.
i.e., Which bits denote erase count, sector state. If I can get any other details from these bits.
2) In the last sector ie., 0x10_7F00, I can write only from 0x10_7F08. Why is it so?
3) If the DFlash is used as User type (not as FEE), should I update the sector? Or the update will be done automatically.