This part is a kind of semiconductor called 24C04A.

Function of this product has 4K 5V I2C Scrial EEPROM.

Manufacturers : Microchip

Image and pinout :

Some of the text within the PDF file :

Obsolete Device Please use 24LC04B. 24C04A 4K 5.0V I2C™ Serial EEPROM FEATURES • Low power CMOS technology • Hardware write protect • Two wire serial interface bus, I2C™ compatible • 5.0V only operation • Self-timed write cycle (including auto-erase) • Page-write buffer • 1 ms write cycle time for single byte • 1,000,000 Erase/Write cycles guaranteed • Data retention >200 years • 8-pin DIP/SOIC packages • Available for extended temperature ranges - Commercial (C): - Industrial (I): - Automotive (E): 0°C to +70°C -40°C to +85°C -40°C to +125°C DESCRIPTION The Microchip Technology Inc. 24C04A is a 4K bit Electrically Erasable PROM. The device is organized as with a standard two wire serial interface. Advanced CMOS technology allows a significant reductio [ ... ]

24C04A PDF Datasheet Download