BUY 24C04 https://www.utsource.net/itm/p/498924.html
4 Kbit Serial I2C Bus EEPROM with User-Defined Block Write Protection
The 24C04 is a 4Kb Serial EEPROM from Atmel. It is a 8-pin DIP (dual in-line package) device. Description: The 24C04 is a 4Kb Serial EEPROM device from Atmel. It is a non-volatile memory device that can be used to store data. It has a serial interface and can be used in a wide variety of applications. Features: 4Kb of non-volatile memory Serial interface Low power consumption Fast access times Wide operating voltage range Low-voltage and standard-voltage operation High-reliability CMOS technology Endurance: 1 million write cycles Data retention: 100 years Applications: The 24C04 can be used in a wide variety of applications, including data logging, remote control, security systems, consumer electronics, automotive, industrial, and medical applications. It is also suitable for use in embedded systems, where it can be used for data storage and retrieval. (For reference only)