DRAM 64k x 1
From Citylan
| 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:
|
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
Files
-
4164 Datasheet
-
4265 Datasheet
