SERIAL EEPROM 128x16 or 256x8 (DIP8,SOIC8)
2Kb, 256B (256 byte), 800 hex
DIP8 - SOIC8 +--\/--+ S |1 8| Vcc CLK |2 7| NC DI |3 6| ORG DO |4 5| Vss +------+
93C56 Datasheet