The 24LC128-E/SM is a Serial EEPROM device from Microchip Technology. It can store up to 16,384 bytes of data, and can be accessed through an I2C interface. It operates on 1.8–5.5 volts of power and is available in 8-pin SOIC, PDIP, and TSSOP packages. It also features on-board 64-byte page write, offering faster write-times than single-byte write. Additionally, it is designed to withstand up to 10,000 write/erase cycles without losing data. The device's data retention guarantee ensures that data stored in the 24LC128-E/SM won't be lost due to power failure.