DRAM 256k x 8: Difference between revisions
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=Pinout= | =Pinout= | ||
<pre> | <pre> | ||
SOJ40 | SOJ40 | ||
+---\/---+ | +---\/---+ | ||
Vss | 1 40| Vss | Vss | 1 40| Vss | ||
| Line 49: | Line 49: | ||
+--------+ | +--------+ | ||
ZIP40 | |||
^ | ^ | ||
Vss 1 | | Vss 1 | | ||
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[[Category:SOJ40-400mil]] | [[Category:SOJ40-400mil]] | ||
[[Category:TSOP-I-40-10x14mm]] | [[Category:TSOP-I-40-10x14mm]] | ||
[[Category:ZIP40 | [[Category:ZIP40]] | ||
Latest revision as of 12:18, 20 August 2022
| BRAND | TAG | NUMBER | PIN COUNT | OUTPUT | MARKINGS |
|---|---|---|---|---|---|
| Samsung | KM | 428256 | KM428C256 KM428C256J |
Dynamic Random-Access Memory 256K x 8
Size
| bit | Byte (unpadded) | Hex |
|---|---|---|
| 2Mb | 256KB | 200000hex |
Pinout
SOJ40
+---\/---+
Vss | 1 40| Vss
SC | 2 39| SDQ7
SDQ0 | 3 38| SDQ6
SDQ1 | 4 37| SDQ5
SDQ2 | 5 36| SDQ4
SDQ3 | 6 35| *SE
*DT/*OE | 7 34| W7/DQ7
W0/DQ0 | 8 33| W6/DQ6
W1/DQ1 | 9 32| W5/DQ5
W2/DQ2 |10 31| W4/DQ4
W3/DQ3 |11 30| Vss
*WB/*WE |12 29| DSF
Vss |13 28| NC
*RAS |14 27| *CAS
A8 |15 26| QSF
A7 |16 25| A0
A6 |17 24| A1
A5 |18 23| A2
A4 |19 22| A3
Vcc |20 21| Vss
+--------+
ZIP40
^
Vss 1 |
| 2 W4/DQ4
W5/DQ5 3 |
| 4 W6/DQ6
W7/DQ7 5 |
| 6 *SE
SDQ5 7 |
| 8 SDQ4
SDQ7 9 |
| 10 SDQ6
Vss 11 |
| 12 Vcc
SC 13 |
| 14 SDQ0
DQ1 15 |
| 16 SDQ2
DQ3 17 |
| 18 *DT/*OE
W0/DQ0 19 |
| 20 W1/DQ1
W2/DQ2 21 |
| 22 W3/DQ3
Vss 23 |
| 24 *WB/*WE
*RAS 25 |
| 26 A8
A7 27 |
| 28 A6
A5 29 |
| 30 A4
A3 31 |
| 32 Vcc
A2 33 |
| 34 A1
A0 35 |
| 36 QSF
GND 37 |
| 38 *CAS
NC 39 |
| 40 DSF
-
External links
Files
-
KM428C256 Datasheet
