8-bit Microcontrollersのトピックflash erase question

flash erase question

oscarm — Sat, 31 May 2008 22:45:42 GMT

hi, i have a program that can write in the internal flash of my mc9s08gt60a mcu, but i have a problem when i try to erase a page of the flash, because when the mcu finish the erase process, it get out of the normal process of functionement that i have program in it, and stays in a state that doesn't do anything, and when a reset it, it works again and the page of the flash is correctly erased.
so, can anyone give me any advice to avoid this strange behavior of the mcu.

thanks

Re: flash erase question

peg — Sun, 01 Jun 2008 07:01:09 GMT

Hi oscarm,

Could it be the COP?

Might need to see your code for this to take it any further.

Re: flash erase question

GTE — Sun, 01 Jun 2008 14:15:05 GMT

Try to disable the COP.
I hope that you are executing the record code and deleting code of the flash from the ram .
When the flash is deleted, you can't acces to it.
Greetings GTE

Re: flash erase question

denny_george — Mon, 02 Jun 2008 19:18:21 GMT

Hi Oscram,

Some checkpoints:

1)Is your program really writting something into FLASH ? Please recheck this point.

2)Also check if bit is set FACCERR to make sure whether programming/erasing procedure is right.