UPD43256BGU-A12

Manufacturer Part NumberUPD43256BGU-A12
Description256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT 120ns
ManufacturerNEC
UPD43256BGU-A12 datasheet
 


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Description
The PD43256B is a high speed, low power, and 262, 144 bits (32,768 words by 8 bits) CMOS static RAM.
Battery backup is available (L, LL, A, and B versions). And A and B versions are wide voltage operations.
The PD43256B is packed in 28-pin plastic DIP, 28-pin plastic SOP and 28-pin plastic TSOP (I).
Features
• 32,768 words by 8 bits organization
• Fast access time: 70, 85, 100, 120, 150 ns (MAX.)
• Wide voltage range (A version: V
• 2 V data retention
• OE input for easy application
Access time
Part number
ns (MAX.)
PD43256B-L
70, 85
PD43256B-LL
70, 85
Note 2
PD43256B-A
85, 100
, 120
Note 2
PD43256B-B
100, 120, 150
Notes 1. T
40 ˚C, V
A
CC
2. Access time : 85 ns (MAX.) (V
Version X and P
This data sheet can be applied to the version X and P. Each version is identified with its lot number. Letter X in
the fifth character position in a lot number signifies version X, letter P, version P.
The information in this document is subject to change without notice.
Document No. M10770EJ9V0DS00 (9th edition)
Date Published May 1997 N
Printed in Japan
DATA SHEET
MOS INTEGRATED CIRCUIT
256K-BIT CMOS STATIC RAM
32K-WORD BY 8-BIT
= 3.0 to 5.5 V, B version: V
CC
CC
Operating
Operating
supply voltage
temperature
V
C
4.5 to 5.5
0 to 70
Note 2
3.0 to 5.5
2.7 to 5.5
= 3 V
= 4.5 to 5.5 V)
CC
JAPAN
D43256B
Lot number
The mark
shows major revised points.
PD43256B
= 2.7 to 5.5 V)
Standby
Data retention
Note 1
supply current
supply current
A (MAX.)
A (MAX.)
50
3
15
2
©
1990, 1993, 1994

UPD43256BGU-A12 Summary of contents