With the EEPROM subsystem, you can access to the 128 bytes EEPROM fitted on Carberry.
Some adderesses of the memory are managed by Carberry, but the other locations are free to use.
The commands available are:
Carberry use some EEPROM addresses to store some configurations as car profiles, resistive learned keys and so on.
Please, read this addresses list to know what locations you can use for your needs.