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Details, datasheet, quote on part number:UPD43256B-B
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Datasheet text preview:
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD43256B
256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT
Description
The µPD43256B 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 µPD43256B 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: VCC = 3.0 to 5.5 V, B version: VCC = 2.7 to 5.5 V) · 2 V data retention · OE input for easy application
Operating supply voltage V 4.5 to 5.5 Operating temperature °C 0 to 70 Standby supply current µA (MAX.) 50 15 3.0 to 5.5 2.7 to 5.5 Data retention supply currentNote 1 µA (MAX.) 3 2
Part number
Access time ns (MAX.) 70, 85 70, 85 85, 100Note 2, 120Note 2
µP D 4 3 2 5 6 B - L µP D 4 3 2 5 6 B - L L µP D 4 3 2 5 6 B - A µP D 4 3 2 5 6 B - BN o t e 2
100, 120, 150
Notes 1. TA 40 °C, VCC = 3 V 2. Access time : 85 ns (MAX.) (VCC = 4.5 to 5.5 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.
JAPAN
D43256B
Lot number
The information in this document is subject to change without notice.
Document No. M10770EJ9V0DS00 (9th edition) Date Published May 1997 N Printed in Japan
The mark
shows major revised points.
©
1990, 1993, 1994
µPD43256B
O r d e r i n g Information
Operating s u p p l y voltage V 4 . 5 to 5.5 Operating temperature °C 0 to 70
P a r t number
Package
A c c e s s time n s (MAX.) 70 85 70 85
Remark
µPD43256BCZ-70L µPD43256BCZ-85L µPD43256BCZ-70LL µPD43256BCZ-85LL µPD43256BGU-70L µPD43256BGU-85L µPD43256BGU-70LL µPD43256BGU-85LL µPD43256BGU-A85 µPD43256BGU-A10 µPD43256BGU-A12 µPD43256BGU-B10 µPD43256BGU-B12 µPD43256BGU-B15 µPD43256BGW-70LL-9JL µPD43256BGW-85LL-9JL µPD43256BGW-A85-9JL µPD43256BGW-A10-9JL µPD43256BGW-A12-9JL µPD43256BGW-B10-9JL µPD43256BGW-B12-9JL µPD43256BGW-B15-9JL µPD43256BGW-70LL-9KL µPD43256BGW-85LL-9KL µPD43256BGW-A85-9KL µPD43256BGW-A10-9KL µPD43256BGW-A12-9KL µPD43256BGW-B10-9KL µPD43256BGW-B12-9KL µPD43256BGW-B15-9KL
2 8 - p i n plastic D I P (600 mil)
L Version
L L Version
2 8 - p i n plastic S O P (450 mil)
70 85 70 85 85 100 120 100 120 150 2 . 7 to 5.5 3 . 0 to 5.5
L Version
L L Version
A Version
B Version
2 8 - p i n plastic T S O P (I) ( 8 × 13.4 mm) ( N o r m a l bent)
70 85 85 100 120 100 120 150
4 . 5 to 5.5
L L Version
3 . 0 to 5.5
A Version
2 . 7 to 5.5
B Version
2 8 - p i n plastic T S O P (I) ( 8 × 13.4 mm) ( R e v e r s e bent)
70 85 85 100 120 100 120 150
4 . 5 to 5.5
L L Version
3 . 0 to 5.5
A Version
2 . 7 to 5.5
B Version
2
µPD43256B
P i n Configuration (Marking Side)
28-pin plastic DIP (600 mil) 2 PD43256BCZ µ 8-pin plastic SOP (450 mil) µ PD43256BGU
A14 A2 1 A7 A6 A5 A4 A3 A2 A1 I 0 2 1 3 4 5 6 7 8 9 1 10 11 12 13 4 28 27 26 25 24 23 22 21 10 19 18 17 16 5 VCC W AE A13 A8 A9 O11 AE C10 IS I/O8 I/O7 I/O6 I/O5 /O4
I/O1 I/O2 G/O3 ND
A 0 - A14 CS WE OE V CC GND
: A d d r e s s inputs : C h i p Select : W r i t e Enable : O u t p u t Enable : P o w e r supply : Ground
I / O 1 - I/O8 : D a t a inputs/outputs
3
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