DRAM 64k x 1

Cross-Reference

BRAND	TAG	NUMBER	MARKINGS
Micron	MI	4264	MT4264
National Semiconductor	NMC	3764	NMC3764 NMC4164
NEC	uPD	4164	uPD4164C uPD4164D uPD4265C
OKI	MSM	3764	MSM3764 MSM3764A
Samsung	KM	4164	KM4164
Texas Instruments	TMS	4164	TMS4164
Toshiba	TMM	4164	TMM4164AP TMM4164C TMM4164P				Note: 64= Page mode 65= Automatic pulse refresh

Dynamic Random-Access Memory 64K x 1 (DIP16, 300mil)(LCC18, 330mil)

Size

bit	Byte (padded 0000000x)	Byte (unpadded)	Hex
64Kb	64KB	8KB	10000hex

Pinout

DIP16 (*64 Page mode)				DIP16 (*65 Automatic pulse refresh)
     +--\/--+					      +--\/--+
  NC |1   16| GND				*RFSH |1   16| GND
 Din |2   15| *CAS				  Din |2   15| *CAS
 *WE |3   14| Dout				  *WE |3   14| Dout
*RAS |4   13| A6				 *RAS |4   13| A6
  A0 |5   12| A3				   A0 |5   12| A3
  A2 |6   11| A4				   A2 |6   11| A4
  A1 |7   10| A5				   A1 |7   10| A5
 Vcc |8    9| A7				  Vcc |8    9| A7
     +------+					      +------+

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

External links

DRAM page on wikipedia

Files

• 4164 Datasheet

  4164 Datasheet

• 4265 Datasheet

  4265 Datasheet