name: 4216405 function: 4Mx4 DRAM package: TSOP/SOJ,26 manufacturer: NEC added-by: JASON GOHLKE +--()--+ Vcc | 1 26| GND <-> I/O1 | 2 25| I/O4 <-> <-> I/O2 | 3 24| I/O3 <-> -> /WE | 4 23| /CAS <- -> /RAS | 5 22| /OE <- -> A11 | 6 21| A9 <- | 7 20| -> A10 | 8 19| A8 <- -> A0 | 9 18| A7 <- -> A1 |10 17| A6 <- -> A2 |11 16| A5 <- -> A3 |12 15| A4 <- Vcc |13 14| GND +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/