Bear with me, as I am just an EE.
We are using a MC9S12XD512.
During a SW VNV effort, our contractor somehow protected the EEPROM so we can no longer erase/write.
From the datasheet:
To change the EEPROM protection that will be loaded during the reset sequence, the EEPROM memory
must be unprotected, then the EEPROM Protection byte must be reprogrammed.
It also says:
The EPOPEN and EPDIS bits can only be written to the protected state.
Currently we have:
EEPROM Protection Byte at address 0x13FFFD = 0x00
EPROT at address 0x114 = 0x00
Both should be 0xFF. How do I change this?
Added p/n to subject.