This part is a kind of semiconductor called 28C512.

Function of this product has CAT28C512.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

CAT28C512/513 512K-Bit CMOS PARALLEL EEPROM FEATURES s Fast Read Access Times: 120/150 ns s Low Power CMOS Dissipation: s Automatic Page Write Operation: –Active: 50 mA Max. –Standby: 200 µA Max. s Simple Write Operation: –1 to 128 Bytes in 5ms –Page Load Timer s End of Write Detection: –On-Chip Address and Data Latches –Self-Timed Write Cycle with Auto-Clear s Fast Write Cycle Time: –Toggle Bit –DATA Polling s Hardware and Software Write Protection s 100,000 Program/Erase Cycles s 100 Year Data Retention s Commercial, Industrial and Automotive –5ms Max s CMOS and TTL Compatible I/O Temperature Ranges DESCRIPTION The CAT28C512/513 is a fast,low power, 5V-only CMOS parallel EEPROM organized as 64K x 8-bits. It requires a simple interface for in-system programming. [ ... ]

28C512 PDF Datasheet Download