24C256 EEPROM Module I2C Interface for Arduino

Model: 24C256-MD.
24C256 EEPROM Module I2C Interface for Arduino.
What is an AT24C256 external EEPROM?
The AT24C256 is an IC that incorporates an EEPROM memory (Electrically Erasable and Programmable Read Only Memory) that can be accessed through the I2C bus.
We can connect this external EEPROM to processors like the Arduino to store variables that persist between reboots or when power is lost.
The AT24C256 EEPROM has 256 Kb, organized in 32,768 one-byte cells. Up to 4 devices can be connected on the same I2C bus for a total of 1 Mbit (128 KBytes)
The AT24C256 is part of a family of external EEPROMs manufactured by Atmel that includes the AT24C256 (256 Kb), AT24C512 (512 Kb) and AT24C1024 (1024 Kb) models. All models are incorporated in the form of an 8-pin IC.