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'[PIC:] WREN bit cleared during EEPROM write'
2004\01\29@042436 by hael Rigby-Jones

picon face
Does anyone know what happens if the WREN bit is cleared whilst a write to
EEPROM is in progress.  Does the write get aborted, or does it complete the
write?  Device is a 18F6620 and/or 18F452.

Regards

Mike




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2004\01\29@160614 by Jinx

face picon face
> Does anyone know what happens if the WREN bit is cleared whilst
> a write to EEPROM is in progress.  Does the write get aborted, or
> does it complete the write?  Device is a 18F6620 and/or 18F452.

Various manuals of non-18F devices have the same paragraph which
states that once WREN has been set and the write initiated, clearing
it will not stop the write process. The 18F manual doesn't have this
paragraph but presumably nothing has changed. Setting hardware bit
WR on any PIC actually starts the write and it seems nothing short of
a reset or power outage will affect completion

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