This part is a kind of semiconductor called 24C64A.

Function of this product has Two-Wire Serial EEPROM.

Manufacturers : Fremont Micro Devices

Image and pinout :

Some of the text within the PDF file :

Two-Wire Serial EEPROM 32K, 64K (8-bit wide) 24C32A, 24C64A FEATURES ‰ Low voltage and low power operations: • FT24C32A/64A: VCC = 1.8V to 5.5V ‰ Maximum Standby current < 1µA (typically 0.02µA and 0.06µA @ 1.8V and 5.5V respectively). ‰ 32 bytes page write mode. ‰ Partial page write operation allowed. ‰ Internally organized: 4096 × 8 (32K), 8192 × 8 (64K). ‰ Standard 2-wire bi-directional serial interface. ‰ Schmitt trigger, filtered inputs for noise protection. ‰ Self-timed Write Cycle (5ms maximum). ‰ 1 MHz (5V), 400 kHz (1.8V, 2.5V, 2.7V) Compatibility. ‰ Automatic erase before write operation. ‰ Write protect pin for hardware data protection. ‰ High reliability: typically 1, 000,000 cycles endurance. ‰ 100 years data retention. ‰ Industrial temper [ ... ]

24C64A PDF Datasheet Download