UPD43256B-A NEC [NEC], UPD43256B-A Datasheet - Page 15

• Manufacturer Part Number: UPD43256B-A
• Description: 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT
• Manufacturer: NEC [NEC]

Low V
L Version ( PD43256B-L: T
LL Version ( PD43256B-LL: T
A Version ( PD43256B-A: T
B Version ( PD43256B-B: T
Data retention supply voltage V
Data retention supply current
Chip deselection to data
retention mode
Operation recovery time
Data retention supply voltage
Data retention supply current
Chip deselection to data
retention mode
Operation recovery time
Note 3 A (T
Note 2 A (T
CC
Parameter
Parameter
Data Retention Characteristics
A
A
40 ˚C)
40 ˚C), 1 A (T
Symbol
Symbol
V
I
I
t
t
CCDR
CCDR
CCDR
CDR
CCDR
CDR
t
t
R
R
A
A
A
= 0 to 70 ˚C)
= 0 to 70 ˚C)
= 0 to 70 ˚C)
A
A
CS
V
CS
V
= 0 to 70 ˚C)
CC
CC
25 ˚C)
= 3.0 V, CS
= 3.0 V, CS
V
V
CC
CC
– 0.2 V
– 0.2 V
Test conditions
Test conditions
V
V
CC
CC
– 0.2 V
– 0.2 V
MIN.
MIN.
2.0
2.0
0
5
0
5
TYP.
TYP.
0.5
0.5
20
PD43256B
MAX.
MAX.
7
5.5
5.5
Note
Note
Unit
Unit
ms
ms
ns
ns
V
V
A
A
15