name: CY7C161 function: 16K x 4 Static RAM with Separate I/O package: DIP28,28 manufacturer: Cypress +--()--+ A5 | 1 28| Vcc A6 | 2 27| A4 A7 | 3 26| A3 A8 | 4 25| A2 A9 | 5 24| A1 A10 | 6 23| A0 A11 | 7 22| I3 A12 | 8 21| I2 A13 | 9 20| O3 I0 |10 19| O2 I1 |11 18| O1 *CE |12 17| O0 *OE |13 16| *WE GND |14 15| *CE2 +------+ This pinout came from the Chipdir: http://www.chipdir.org/