upd43256b-x Renesas Electronics Corporation., upd43256b-x Datasheet - Page 14

• Manufacturer Part Number: upd43256b-x
• Description: 256k-bit Cmos Static Ram 32k-word By 8-bit Extended Temperature Operation
• Manufacturer: Renesas Electronics Corporation.

Low V
Note 2
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.
14
Data retention supply voltage
Data retention supply current
Chip deselection to data retention mode
Operation recovery time
CC
μ
V
Data Retention Characteristics (T
A (T
CCDR
V
V
IL
4.5 V
IH
(MAX.)
(MIN.)
(MIN.)
A
Parameter
GND
≤
V
Note
40 °C), 7
CC
μ
A (T
t
CDR
A
≤
70 °C)
/CS
Symbol
V
I
CCDR
t
CCDR
CDR
t
R
A
= −25 to +85 °C)
Data Sheet M11012EJ6V0DS
/CS ≥ V
V
CC
Data retention mode
= 3.0 V, /CS ≥ V
/CS ≥ V
CC
− 0.2 V
Test Condition
CC
– 0.2 V
CC
− 0.2 V
MIN.
2.0
0
5
t
R
TYP.
0.5
μ
PD43256B-X
MAX.
20
5.5
Note
Unit
ms
μ
ns
V
A