DRAM 256k x 4
From Citylan
BRAND | TAG | NUMBER | PIN COUNT | OUTPUT | MARKINGS |
---|---|---|---|---|---|
Samsung | KM | 44C256 | DIP20-300mil SOJ20 ZIP20 | . | KM44C256 |
Samsung | KM | 44C258 | DIP20-300mil SOJ20 ZIP20 | . | KM44C258 |
Note:
|
Dynamic Random-Access Memory 256K x 4
Size
bit | Byte (padded 0000xxxx) | Byte (unpadded) | Hex |
---|---|---|---|
1Mb | 256KB | 128KB | 100000hex |
Pinout
DIP20 SOJ20 +---\/---+ DQ1 | 1 20| Vss DQ2 | 2 19| DQ4 *W | 3 18| DQ3 *RAS | 4 17| *CAS NC | 5 16| *G A0 | 6 15| A8 A1 | 7 14| A7 A2 | 8 13| A6 A3 | 9 12| A5 Vcc |10 11| A4 +--------+ ZIP20 ^ *G 1 | | 2 *CAS DQ3 3 | | 4 DQ4 Vss 5 | | 6 DQ1 DQ2 7 | | 8 *W *RAS 9 | | 10 NC A0 11 | | 12 A1 A2 13 | | 14 A3 Vcc 15 | | 16 A4 A5 17 | | 18 A6 A7 19 | | 20 A8 -
External links
Files
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KM44C256 KM44C258 Datasheet