UPD444008 반도체 회로 부품 판매점
4M-BIT CMOS FAST SRAM 512K-WORD BY 8-BIT
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 NEC |
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD444008
4M-BIT CMOS FAST SRAM
512K-WORD BY 8-BIT
Description
The µPD444008 is a high speed, low power, 4,194,304 bits (524,288 words by 8 bits) CMOS static RAM.
Operating supply voltage is 5.0 V ± 0.5 V.
The µPD444008 is packaged in 36-pin PLASTIC SOJ.
Features
• 524,288 words by 8 bits organization
• Fast access time : 8, 10, 12 ns (MAX.)
• Output Enable input for easy application
• Single +5.0 V power supply
Ordering Information
Part number
µPD444008LE-8
µPD444008LE-10
µPD444008LE-12
Package
36-pin PLASTIC SOJ
(10.16 mm (400))
Access time
ns (MAX.)
8
10
12
Supply current mA (MAX.)
At operating
At standby
200 10
180
170
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. M14428EJ5V0DS00 (5th edition)
Date Published May 2002 NS CP(K)
Printed in Japan
The mark shows major revised points.
©
1999
Pin Configuration (Marking Side)
/××× indicates active low signal.
36-pin PLASTIC SOJ (10.16 mm (400))
A0
A1
A2
A3
A4
/CS
I/O1
I/O2
VCC
GND
I/O3
I/O4
/WE
A5
A6
A7
A8
A9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36 NC
35 A18
34 A17
33 A16
32 A15
31 /OE
30 I/O8
29 I/O7
28 GND
27 VCC
26 I/O6
25 I/O5
24 A14
23 A13
22 A12
21 A11
20 A10
19 NC
µPD444008
A0 - A18 : Address Inputs
I/O1 - I/O8 : Data Inputs / Outputs
/CS : Chip Select
/WE : Write Enable
/OE : Output Enable
VCC : Power supply
GND
: Ground
NC : No connection
Remark Refer to Package Drawing for the 1-pin index mark.
2 Data Sheet M14428EJ5V0DS
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UPD444008 ram
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