I am a bit confused about some point on the MPC5510 Reference Manual, about flash erase. In section 22.5.5 (Flash Erase, chapter Flash Array and Control), step 3 indicates : "Write any address in flash. This is referred to as an erase interlock write".
I do not understand what an "erase interlock write" is, and what its purpose is. Also, I've noted that if I omit this step, the erase seems to work just as fine.
Could someone enlighten me please?