name: CY7C149 function: 1K x 4 Static RAM package: DIP18 / PLCC18,18 manufacturer: Cypress +--()--+ A6 | 1 18| Vcc A5 | 2 17| A7 A4 | 3 16| A8 A3 | 4 15| A9 A0 | 5 14| I/O0 A1 | 6 13| I/O1 A2 | 7 12| I/O2 *CS | 8 11| I/O3 GND | 9 10| *WE +------+ This pinout came from the Chipdir: http://www.chipdir.org/