BUY AT24C01AN https://www.utsource.net/itm/p/1018449.html
Two-wire Serial EEPROM
Description: The AT24C01AN is a 1K-bit serial EEPROM from Atmel. It is an 8-pin DIP device that operates from a single power supply of 2.5V to 5.5V. Features: Low-voltage operation: 2.5V to 5.5V 1K-bit of memory 100 kHz I2C bus interface Low-power CMOS technology Write protect pin Self-timed write cycle Schmitt trigger inputs High-reliability Endurance: 1 million write cycles Data retention: 100 years Applications: Automotive Industrial Consumer Medical Security Telecom (For reference only)