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UPD444012A-X fiches techniques PDF

NEC - 4M-BIT CMOS STATIC RAM 256K-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION

Numéro de référence UPD444012A-X
Description 4M-BIT CMOS STATIC RAM 256K-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION
Fabricant NEC 
Logo NEC 





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UPD444012A-X fiche technique
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD444012A-X
4M-BIT CMOS STATIC RAM
256K-WORD BY 16-BIT
EXTENDED TEMPERATURE OPERATION
Description
The µPD444012A-X is a high speed, low power, 4,194,304 bits (262,144 words by 16 bits) CMOS static RAM.
The µPD444012A-X has two chip enable pins (/CE1, CE2) to extend the capacity.
The µPD444012A-X is packed in 48-pin PLASTIC TSOP (I) (Normal bent).
Features
262,144 words by 16 bits organization
5 Fast access time: 50, 55, 70, 85, 100, 120 ns (MAX.)
Byte data control: /LB (I/O1 - I/O8), /UB (I/O9 - I/O16)
5 Low voltage operation
(B version: VCC = 2.7 to 3.6 V, C version: VCC = 2.2 to 3.6 V)
Low VCC data retention: 1.0 V (MIN.)
Operating ambient temperature: TA = –25 to +85°C
Output Enable input for easy application
Two Chip Enable inputs: /CE1, CE2
Part number
Access time
Operating supply Operating ambient
Supply current
ns (MAX.)
Voltage
temperature At operating At standby At data retention
5 µPD444012A-BxxX 50 Note 1, 55, 70, 85, 100
V
2.7 to 3.6
°C
25 to +85
mA (MAX.)
40 Note 2
45 Note 3
50 Note 4
µA (MAX.)
7
µA (MAX.)
3
µPD444012A-CxxX
70, 85, 100, 120
2.2 to 3.6
40
5 Notes 1. VCC 3.0 V
5 2. Cycle time 70 ns
5 3. Cycle time = 55 ns
5 4. Cycle time = 50 ns
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. M14464EJ5V0DS00 (5th edition)
Date Published July 2001 NS CP (K)
Printed in Japan
The mark 5 shows major revised points.
©
1999

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