The 93C56AT-E/SN is a serial EEPROM manufactured by Microchip. It is a 32 Kbit, 2-wire Serial EEPROM device that is used for data storage and retrieval. It operates on a supply voltage range of 2.7V to 5.5V, and is available in various packages: 8-pin PDIP, SOIC, and TSSOP. It has block write protection, has an extensive write protection system, and is ideal for healthcare, industrial, and automotive applications.