23256
32k X 8 rom

pin desc function 1 vPP 5v dc 2-10,21,23-27 a0-a14 aDDRESS bUS iNPUTS. 11-13,15-19 d0-d7 dATA oUTPUTS. 14 gnd gROUND. 20 ce cHIP eNABLE. 22 oe oUTPUT eNABLE. 28 vCC 5v dc iNPUT.

2016
2k X 8 static ram

pin desc function 1-8,19,22,23 a0-a10 aDDRESS bUS iNPUTS. 9-11,13-17 d0-d7 cOMMON dATA iNPUT/oUTPUT lINES. 12 vSS gROUND. 18 cs cHIP sELECT eNABLE, lOW aCTIVE. 20 oe oUTPUT eNABLE, lOW aCTIVE. 21 we wRITE (iNPUT) eNABLE, lOW aCTIVE. 24 vCC 5v dc iNPUT.