DRAM 256k x 1: Difference between revisions

From Citylan
Jump to navigationJump to search
mNo edit summary
Line 62: Line 62:
ZIP16
ZIP16
           ^
           ^
           |  1 A6
    A6  1 |
   Dout 2 |
           |  2 Dout
           |  3 *CAS
   *CAS 3 |
  Vss 4 |
           |  4 Vss
           |  5 A8
    A8 5 |
   Din 6 |
           |  6 Din
           |  7 *we
   *WE 7 |
  *RAS 8 |
           |  8 *RAS
           | 9 A0
    A0 9 |
     A2 10 |
           | 10 A2
           | 11 A1
     A1 11 |
  Vcc 12 |
           | 12 Vcc
           | 13 A7
    A7 13 |
     A6 14 |
           | 14 A5
           | 15 A4
     A4 15 |
    A3 16 |
           | 16 A3
           -
           -</pre>
</pre>


=External links=
=External links=

Revision as of 20:38, 6 August 2014

Dynamic Random-Access Memory 256K x 1 (DIP16, 300mil)(LCC18, 330mil)(ZIP16, 100mil)

Size

bit Byte Hex
256Kb 32KB 40000hex

Cross-Reference

BRAND			TAG	NUMBER	CODES

Fujitsu			MB	 81256	MB81256 MB81257 MB81258
Goldstar		GM	71C256	GM71256 GM71C256
Hitachi			HM	 51256	HM51256P HM51256CP HM51256LP HM51256LCP HM51256ZP HM51256LZP HM51258P
Hyundai			HY	53C256	HY53C256S HY53C256LS HY53C256F HY53C256LF
Matsushita		MN	 41256	MN41256
Micron			MT	  1256	MT1256
Mitsubishi		M5M	  4256	M5M4256AP M5M4256AJ M5M4256AL M5M4256P M5M4256S M5M4257A M5M4257J M5M4257P M5M4257S
Motorola		MCM	  6256	MCM6256 MC6256B MCM6257B
NEC			uPD	 41256	uPD41256C uPD41256L uPD41257C uPD41257L
OKI			MSM	 41256	MSM41256A MSM51C256 MSM51257
Samsung			KM	 41256	KM41256A KM41256AJ KM41256AP KM41256AZ KM41257A KM41C256 KM41C257 KM41C258
Sharp			LH	 21256	LH21256 LH21257 LH21258
Siemens			HYB	 41256	HYB41256
Texas Instruments	TMS	  4256	TMS4256 TMS4257
Toshiba			TC	 51256	TC51256P TC51256PL TC51256T TC51256TL TC51256Z TC51256ZL TC51256 TC51257 TC51258

Note:
*256= Page mode
*257= Nibble mode
*258= Static column mode

Pinout

DIP16
    +--\/--+
 A8 |1   16| Vss
Din |2   15| *CAS
*WE |3   14| Dout
*RAS|4   13| A6
 A0 |5   12| A3
 A2 |6   11| A4
 A1 |7   10| A5
Vcc |8    9| A7
    +------+

LCC18
+---------------------------------------------------------------+
|  3 *WE        |  8 A1         | 12 A4         | 17 *CAS       |
|  4 *RAS       |  9 Vcc        | 13 A3         | 18 Vss        |
|  5 NC         | 10 A7         | 14 NC         |  1 A8         |
|  6 A0         | 11 A5         | 15 A6         |  2 Din        |
|  7 A2         |               | 16 Dout       |               |
+---------------------------------------------------------------+

ZIP16
          ^
    A6  1 |
          |  2 Dout
  *CAS  3 |
          |  4 Vss
    A8  5 |
          |  6 Din
   *WE  7 |
          |  8 *RAS
    A0  9 |
          | 10 A2
    A1 11 |
          | 12 Vcc
    A7 13 |
          | 14 A5
    A4 15 |
          | 16 A3
          -

External links

DRAM page on wikipedia

Files

Retrieved from "http://citylan.it/index.php?title=DRAM_256k_x_1&oldid=8512"