I have seen data eeprom corruption typically with PIC16F84 when there
is no brown-out detection circuit. Just try to play with power switch
and you'll see what it can do... :)

 Nikolai

On Tuesday, July 25, 2000 Erik Reikes wrote:
> Has anyone seen or heard of bytes in the EEPROM and/or FLASH becoming
> corrupted over time?

> We have seen a couple of units with corrupted E^2 and a couple with
> corrupted FLASH.  Both of these are programmed using the EECON interface
> with Vdd of 3.3V (Vmin is listed as 2.0V for the LF part).

> Thanks.


> Erik Reikes
> Senior Software Engineer
> Xsilogy, Inc.

> ereikes@xsilogy.com
> ph : (858) 362-5003
> fax : (858) 362-1367
> cell : (858) 663-1206

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