UPD43256BGW-B12-9JL NEC [NEC], UPD43256BGW-B12-9JL Datasheet - Page 16

• Manufacturer Part Number: UPD43256BGW-B12-9JL
• Description: 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT
• Manufacturer: NEC [NEC]

Low V
Notes 1. 3 A (T
Data Retention Timing Chart
Note A version : 3.0 V, B version : 2.7 V
Remark The other pins (Address, /OE, /WE, I/O) can be in high impedance state.
16
Data retention supply voltage
Data retention supply current
Chip deselection
to data retention mode
Operation recovery time
CC
2. 2 A (T
V
CCDR
Parameter
V
V
Data Retention Characteristics (T
IL
4.5 V
IH
(MAX.)
(MIN.)
(MIN.)
GND
V
Note
CC
A
A
40 C)
40 C), 1 A (T
Symbol
t
V
I
CDR
t
CCDR
CCDR
CDR
t
R
/CS
A
/CS
V
CC
25 C)
= 3.0 V, /CS
V
Data Sheet M10770EJCV0DS00
CC
Test Condition
0.2 V
A
Data retention mode
/CS
= 0 to 70 C)
V
CC
V
CC
0.2 V
– 0.2 V
MIN.
2.0
0
5
PD43256B-xxL
TYP.
0.5
MAX.
20
5.5
Note1
t
R
MIN.
2.0
0
5
PD43256B-xxLL
PD43256B-Axx
PD43256B-Bxx
PD43256B
TYP.
0.5
MAX.
7
5.5
Note2
Unit
ms
ns
V
A