name: x25640 function: 8k*8 SPI Serial EEPROM with Block Lock Protection package: DIP,8 manufacturer: Xicor +--()--+ *cs | 1 8| Vcc so | 2 7| *hold *wp | 3 6| sck Vss | 4 5| si +------+ This pinout came from the Chipdir: http://www.chipdir.org/ name: x25640 function: 8k*8 SPI Serial EEPROM with Block Lock Protection package: SOIC,14 manufacturer: Xicor +--()--+ nc | 1 14| nc nc | 2 13| nc *cs | 3 12| Vcc so | 4 11| *hold *wp | 5 10| sck Vss | 6 9| si nc | 7 8| nc +------+ This pinout came from the Chipdir: http://www.chipdir.org/