AVR-Chat

This is exactly what the problem is, used to see this all the time,
external reset chip does the trick.  

Cheaper though to use a newer part.

-lp


--- In AVR-Chat@yahoogroups.com, "Larry Barello" <yahoo@b...> wrote:
> Use an external reset chip.  This is a well documented problem with
first
> generation AVR chips.  If you can't then a) don't use the first word of
> EEPROM and b) always zero the EEAR register between operations.
> 
> Best, upgrade to a tiny26 or some other chip with a built in BOD.  I
have
> never had EEPROM problems with the new mega & tiny chips.
> 
> -----Original Message-----
> From: Mark Jordan
> 
> 	I have a circuit using an AT90S2313 working on a very noisy
> environment and subject to program 'crashes' sometimes.
> 	The Watchdog is very efficient recovering from crashes, but
> I'm having a corruption on the EEPROM contents.
> 	What is the best method of saving some bytes (2) in the internal
> EEPROM and getting them back without corruption? Is there some sort
> of FEC applied to memories?