This part is a kind of semiconductor called 93C56.

Function of this product has 2K 5.0V Automotive Temperature Microwire Serial EEPROM.

Manufacturers : Microchip Technology

Image and pinout :

Some of the text within the PDF file :

M FEATURES 93C56A/B PACKAGE TYPE PDIP CS CLK DI DO 1 2 3 4 VCC 8 7 6 5 NC NC VSS 2K 5.0V Automotive Temperature Microwire® Serial EEPROM • Single supply 5.0V operation • Low power CMOS technology - 1 mA active current (typical) - 1 µA standby current (maximum) • 256 x 8 bit organization (93C56A) • 128 x 16 bit organization (93C56B) • Self-timed ERASE and WRITE cycles (including auto-erase) • Automatic ERAL before WRAL • Power on/off data protection circuitry • Industry standard 3-wire serial interface • Device status signal during ERASE/WRITE cycles • Sequential READ function • 100,000 E/W cycles guaranteed • Data retention > 200 years • 8-pin PDIP and SOIC packages • Available for the following temperature ranges: - Automotive (E): -40°C to +125°C 93C56 [ ... ]

93C56 PDF Datasheet Download