i want to maintain a database of a no. of users in the memory provided by Atmega128. shall i use a
inbuilt EEPROM or flash.can anyone suggest the best possible approach to be used for the same? plz help

 

EEprom has very little write endurance, and the inner flash isn't much better. How much data do you need to write and how often? I would use some external flash, probably spi.

 

i need to write a data about 120kb in size. 1000 write cycles per day . how about using cat24c256