Bob,
I didn't experience this problem (yet) but it is good to know. I understand
this is for the EEPROM part of the MCU and not for the FLASH, correct?
Is this a problem on the "external" I2C EEPROM series from Microchip as well
or only on the nanowatt MCU series?

TIA

2009/9/30 Bob Axtell <engineer@cotse.net>

> David, this is pretty common in the "nanowatt" series of PICs. This is
> caused by weaknesses in the EEPROM
> manufactrung process. It turns out that, unlike the older PIC16C/18C,
> there are now severe limitations on the
> number of times the EEPROM cell can be read before being refreshed.
> Unfortunately, frequent refreshes reduce
> the useful lifetime of the EEPROM cell.
>
>

-- 
Ariel Rocholl
Madrid, Spain
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