We are searching for atmel micro-controller on mouser and digikey with following specifications shown in figure:
Which gives the following microcontrollers list:
All these shown micro-controllers do not have internal eeprom, that we require for data storage and retain that data until we force to erase. We were using Atmega 1281 which have 128Kb of program memory and 4096 Bytes of eeprom that is not enough in our case because our code increases whenever we a add new functionality, so we require a atmel micro-controller of supply voltage of 5V and at least 512Kb program memory with eeprom of at least 4096 Bytes or greater. Please suggest a atmel family micro controller.
Regards: Shahzad Raza