name: CY7C199 function: 32K x 8 Static RAM package: DIP28 / SOJ28 / LCC28,28 manufacturer: Cypress +--------+----------+----------+---------+ | 1 - A5 | 8 - A12 | 15 - I/O3| 22 - *OE| | 2 - A6 | 9 - A13 | 16 - I/O4| 23 - A1 | | 3 - A7 | 10 - A14 | 17 - I/O5| 24 - A2 | | 4 - A8 | 11 - I/O0| 18 - I/O6| 25 - A3 | | 5 - A9 | 12 - I/O1| 19 - I/O7| 26 - A4 | | 6 - A10| 13 - I/O2| 20 - *CE | 27 - *WE| | 7 - A11| 14 - GND | 21 - A0 | 28 - GND| +--------+----------+----------+---------+ This pinout came from the Chipdir: http://www.chipdir.org/