This part is a kind of semiconductor called 24C164.

Function of this product has 2-Wire Serial EEPROM.

Manufacturers : ATMELCorporation

Image and pinout :

Some of the text within the PDF file :

Features • Low Voltage and Standard Voltage Operation – 5.0 (VCC = 4.5V to 5.5V) – 2.7 (VCC = 2.7V to 5.5V) – 2.5 (VCC = 2.5V to 5.5V) – 1.8 (VCC = 1.8V to 5.5V) Internally Organized 2048 x 8 (16K) 2-Wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bidirectional Data Transfer Protocol 100 KHz (1.8V, 2.5V, 2.7V) and 400 KHz (5V) Compatibility Write Protect Pin for Hardware Data Protection Cascadable Feature Allows for Extended Densities 16-Byte Page Write Mode Partial Page Writes Are Allowed Self-Timed Write Cycle (10 ms max) High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years – ESD Protection: >3,000V Automotive Grade and Extended Temperature Devices Available 8-Pin JEDEC SOIC and 8-Pin PDIP Packages • • • • [ ... ]

24C164 PDF Datasheet Download