This is a useful addition to my previous article “Arduino EEPROM”. The article is still available. I have provided a link here for convenience https://www.edn.com ...
The AT24C256 EEPROM provides a small amount of permanent storage for the Arduino, but can be tricky to use. The Hobbytronics website has an excellent article explaining how to use this EEPROM.
Library for using the Atmels EEPROM AT24C32/AT24C64/AT24C128/AT24C256/AT24C512 in Arduino projects. See https://oberguru.net/elektronik/eeprom/at24cx-at24c32-at24c64 ...