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Unlock MC68HC08AZ32 MCU Eeprom Code needs to manipulate the lower power consumption operation which can disable the EEPROM module:

EEOFF — EEPROM Power-Off
This read/write bit disables the EEPROM module for lower power consumption.

Any attempts to access the array will give unpredictable results. Reset clears this bit.

1 = Disable EEPROM array 0 = Enable EEPROM array
EERAS[1:0] — Erase/Program Mode Select Bits
These read/write bits set the erase modes. Reset clears these bits.

EEPROM Program-Erase Mode Select

EELAT — EEPROM Latch Control
This read/write bit latches the address and data buses for programming the EEPROM array. EELAT can not be cleared if EEPGM is still set. Reset clears this bit.
1 = Buses configured for EEPROM program or erase operation 0 = Buses configured for normal operation
AUTO — Automatic termination of program/erase cycle.
When AUTO is set, EEPGM is cleared automatically after the program/erase cycle is terminated by the internal timer which can be applied in the process of Motorola MC68HC08AS20 MCU Flash Copying.
(See note D for 5.9.1 EEPROM Programming and 5.9.2 EEPROM Erasing.)
0 = Automatic clear of EEPGM is disabled 1 = Automatic clear of EEPGM is enabled.
EEPGM — EEPROM Program/Erase Enable

Unlock MC68HC08AZ32 MCU Eeprom Code

This read/write bit enables the internal charge pump and applies the programming/erasing voltage to the EEPROM array if the EELAT bit is set and a write to a valid EEPROM location has occurred. Reset clears the EEPGM bit and then the execution of NXP P89LPC922 Microcontroller Flash Heximal restoration can be carried out.

1 = EEPROM programming/erasing power switched on 0 = EEPROM programming/erasing power switched off

NOTE:     Writing 0s to both the EELAT and EEPGM bits with a single instruction will only clear EEPGM. This is to allow time for the removal of high voltage from BREAK IC.