name: 24257A function: 32kx8 High-speed CMOS SRAM package: 28-pin PDIP,28 manufacturer: Winbond added-by: Vince Sutton +--()--+ A14 | 1 28| Vdd A12 | 2 27| /WE A7 | 3 26| A13 A6 | 4 25| A8 A5 | 5 24| A9 A4 | 6 23| A11 A3 | 7 22| /OE A2 | 8 21| A10 A1 | 9 20| /CS A0 |10 19| I/O8 I/O1 |11 18| I/O7 I/O2 |12 17| I/O6 I/O3 |13 16| I/O5 Vss |14 15| I/O4 +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/