DRAM 64k x 1

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	OUTPUT	MARKINGS
Micron	MI	4264			MT4264
National Semiconductor	NMC	3764			NMC3764 NMC4164
NEC	uPD	4164			uPD4164C uPD4164D
NEC	uPD	4265	DIP16	TS	uPD4265C
OKI	MSM	3764			MSM3764 MSM3764A
Samsung	KM	4164			KM4164
Texas Instruments	TMS	4164	DIP16 LCC18	TS	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

• 

  TMS4164 Datasheet

• 

  uPD4265 Datasheet