HC908AZ32A HELP EEPROM locked out

RChapman — Wed, 25 Jan 2006 00:03:40 GMT

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Posted: Mon Mar 21, 2005 5:30 pm

Hi,

has anyone an idea how to unlock the EEPROM when EENVR (location $FE1C) is programmed to $00 ?

Posted: Tue Mar 22, 2005 7:27 am

Hi,

You can't do it. The EEPROM security cannot be removed once armed.

Regards,

Posted: Wed Jul 13, 2005 11:49 am

Not even when bulk-erasing the whole flash array? That should reset EENVR too, shouldn't it?

Best regards,

Posted: Fri Jul 29, 2005 2:27 pm

I don't think EENVR is stored in Flash, but in EEPROM.
The 908AZxxA has both and separated.

topic HC908AZ32A HELP EEPROM locked out in 8-bit Microcontrollers

HC908AZ32A HELP EEPROM locked out