Chapter 4 Memory
backdoor key access sequence has no effect on the program and erase protections defined in the flash
protection register (FPROT).
It is not possible to unsecure the MCU in special mode by using the backdoor key access sequence in
background debug mode (BDM).
4.6.6
Resets
If a reset occurs while any flash command is in progress, that command will be immediately aborted. The
state of the flash array address being programmed or the sector/block being erased is not guaranteed.
MC9S08QE128 MCU Series Reference Manual, Rev. 2
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