name: CY7C166A function: 16K x 4 Static RAM package: DIP24 / SOJ24,24 manufacturer: Cypress +--()--+ A5 | 1 24| Vcc A6 | 2 23| A4 A7 | 3 22| A3 A8 | 4 21| A2 A9 | 5 20| A1 A10 | 6 19| A0 A11 | 7 18| NC A12 | 8 17| I/O3 A13 | 9 16| I/O2 *CE |10 15| I/O1 *OE |11 14| I/O0 GND |12 13| *WE +------+ This pinout came from the Chipdir: http://www.chipdir.org/