DRAM 64k x 4

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Cross-Reference
BRAND TAG NUMBER MARKINGS
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

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

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

DRAM page on wikipedia

Files