DRAM 64k x 4: Difference between revisions

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SRAM 64K x 4 (DIP28, 300mil)
'''Dynamic Random-Access Memory 64K x 4 (DIP18, 300mil)(LCC18, 330mil)(ZIP20, 100mil)'''


256Kb, 32KB, 10000hex4 bit
=Size=
{| border="1" cellpadding="4" cellspacing="0"
|-align="left"
!bit
!Byte
!Hex
|-
|256Kb || 32KB || 40000hex
|}


=Cross-Reference=
<pre>
<pre>
41464
BRAND TAG NUMBER CODES
CY7C195
 
KM41C464
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
</pre>
</pre>
pinout
 
 
=Pinout=
<pre>
<pre>
    +--\/--+
DIP40
A6  |1   28| Vcc
        +---\/---+
A7  |2   27| A5
    *OE | 1   18| Vss
A8  |3   26| A4
    DO1 | 2   17| D04
A9  |4   25| A3
    DO2 | 3   16| *CAS
A10 |5   24| A2
    *WE | 4   15| DO3
A11 |6   23| A1
    *RAS | 5   14| A0
A12 |7   22| A0
      A6 | 6   13| A1
A13 |8   21| I3
      A5 | 7   12| A2
A14 |9   20| I2
      A4 | 8   11| A3
A15 |10 19| 03
    Vcc | 9   10| A7
I0 |11 18| 02
        +--------+
I1 |12 17| 01
 
CE/ |13 16| O0
LCC18
GND |14 15| WE/
+---------------------------------------------------------------+
    +------+</pre>
|  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
          -
</pre>
 
=External links=
[http://en.wikipedia.org/wiki/Dynamic_random-access_memory DRAM page on wikipedia]


[[Image:dip28-300mil.jpg]]
=Files=
<gallery widths="150px">
File:81464.pdf|81464 Datasheet
</gallery>


[[Category:RAM]]
[[Category:RAM]]
[[Category:DIP28]]
[[Category:DIP18]]
[[Category:LCC18]]
[[Category:ZIP20]]

Revision as of 20:44, 6 August 2014

Dynamic Random-Access Memory 64K x 4 (DIP18, 300mil)(LCC18, 330mil)(ZIP20, 100mil)

Size

bit Byte Hex
256Kb 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

DIP40
         +---\/---+
     *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