Hi, Josuetas

I use a lot of 628s on R/C equipments . To the day I did not get any problem with EEPROM ( all the working parameters are stored in EEPROM )

The only thing is EEPROM is only accessed at programming time ( a jumper has to be placed to enter this mode and allow Writing ), or at startup, as values are read/verified/pasted in RAM. But no access during run mode.

Over that, writing to the EEPROM is protected by a Voltage detector ( MC34034P5 )... also active in run mode.

But, MCLR pin is used as external reset ... without any brownout ( no reset admitted ! ).

Alain