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NEe Microcomputers, Inc. NEe fL PD421 J.L PD421-1 fL PD421-2 fL PD421-3 J.L PD421-5 8K BIT STATIC RAM DESCR IPTION The NEC MPD421 is a very high speed 8192 bit static Random Access Memory organized as 1024 words by 8 bits. Features include a power down mode controlled by the chip select input for an 80% power saving. FEATURES • 1024x8-bitOrganization •.
include a power down mode controlled by the chip select input for an 80% power saving.
FEATURES
• 1024x8-bitOrganization
• Very Fast Access Time: 150/200/250/300/450 ns
• Single +5V Power Supply
• Low Power Standby Mode
• N-Channel Silicon Gate Process
• Fully TTL Compatible
• 6-Device Static Cell
• Three State Common I/O
• Compatible with 8108 and Equivalent Devices
• Available in 22 Pin Ceramic Dual-in-Line Package
11
PIN CONFIGURATION
A6
22 Vee
As 2
21 A7
A4 3 A3 4
AS 19 A9
A2 5 MPD lS Cs
A1 6
421 17 WE
AO
1/°1 1/°2 1/°3
GND
7 S 9
10 11
16 I/OS
15 1/°7 14 1/°6 13 1/°5 12 1/°.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | UPD421-1 |
NEC |
8K BIT STATIC RAM |
|
| 2 | UPD421-3 |
NEC |
8K BIT STATIC RAM |
|
| 3 | UPD421-5 |
NEC |
8K BIT STATIC RAM |
|
| 4 | UPD421 |
NEC |
8K BIT STATIC RAM |
|
| 5 | UPD421000 |
NEC |
(UPD421000 - UPD421002) APPLICATION NOTE 53 |
|
| 6 | UPD421001 |
NEC |
(UPD421000 - UPD421002) APPLICATION NOTE 53 |
|
| 7 | UPD421002 |
NEC |
(UPD421000 - UPD421002) APPLICATION NOTE 53 |
|
| 8 | UPD42101 |
NEC Electronics |
Line Buffer |
|
| 9 | UPD42101G-3 |
ETC |
CMOS 7K-Bit FIFO Memory |
|
| 10 | UPD42102 |
NEC |
Line Buffer for PAL TV |
|
| 11 | UPD4216160 |
NEC Electronics |
(UPD42S16160 / UPD42S18160) 16M-Bit DRAM |
|
| 12 | UPD4216165L |
NEC Electronics |
3.3V Operation 16M-Bit DRAM |
|