avr - je nejaky dovod prepisovat EEPROM ked nejde o zmenu?

[Lukáš Grepl]

> Nevim jak u AVR, ale v nejake appnote (mozna i v DS) k PICum jsem 
> zahledl noticku, ze je vhodne cas od casu refreshovat obsah EEPROM. 

Tady je na toto tema nejaka diskuze: 
http://www.embeddedrelated.com/groups/piclist/show/9156.php

a tento nazor vypada docela rozumne:

"The refresh is needed because when writing to one
eeprom cell part of the charge on neighboring cells
that is needed to retain its contents is lost.

If a cell is almost never written to but the cell next
to it is often at a certain point it will lose it's
contents... unless you refresh it's data once in a
while (read the contents and write them back)"

Lukas Grepl