DRAM 64k x 4: Difference between revisions
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|256Kb || 32KB || 40000hex | |256Kb || 64KB || 32KB || 40000hex | ||
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Revision as of 18:41, 9 September 2014
Dynamic Random-Access Memory 64K x 4 (DIP18, 300mil)(LCC18, 330mil)(ZIP20, 100mil)
Size
| bit | Byte (padded 0000xxxx) | Byte (unpadded) | Hex |
|---|---|---|---|
| 256Kb | 64KB | 32KB | 40000hex |
Cross-Reference
BRAND TAG NUMBER CODES Fujitsu MB 81464 MB81464 MB81466 Hitachi HM 50464 HM50464 Matsushita MN 41464 MN41464 Mitsubishi M5M 4464 M5M4464 NEC uPD 41464 uPD41464 OKI MSM 41464 MSM41464 Samsung KM 41464 KM41C464 KM41C466 Sharp LH 2464 LH2464 Texas Instruments TMS 4464 TMS4464 Toshiba TC 51464 TC51464 TC51466 Note: *464= Page mode *466= Static column mode
Pinout
DIP18
+---\/---+
*OE | 1 18| Vss
DO1 | 2 17| D04
DO2 | 3 16| *CAS
*WE | 4 15| DO3
*RAS | 5 14| A0
A6 | 6 13| A1
A5 | 7 12| A2
A4 | 8 11| A3
Vcc | 9 10| A7
+--------+
LCC18
+---------------------------------------------------------------+
| 3 DO2 | 8 A4 | 12 A2 | 17 D04 |
| 4 *WE | 9 Vcc | 13 A1 | 18 Vss |
| 5 *RAS | 10 A7 | 14 A0 | 1 *OE |
| 6 A6 | 11 A3 | 15 DO3 | 2 DO1 |
| 7 A5 | | 16 *CAS | |
+---------------------------------------------------------------+
ZIP20
^
DO3 1 |
| 2 *CAS
DO4 3 |
| 4 Vss
*OE 5 |
| 6 DO1
DO2 7 |
| 8 *WE
*RAS 9 |
| 10 NC
NC 11 |
| 12 A6
A5 13 |
| 14 A4
Vcc 15 |
| 16 A7
A3 17 |
| 18 A2
A1 19 |
| 20 A0
-
External links
Files
-
81464 Datasheet
