UPD431000A-xxx NEC, UPD431000A-xxx Datasheet - Page 19

• Manufacturer Part Number: UPD431000A-xxx
• Description: 1M-BIT CMOS STATIC RAM 128K-WORD BY 8-BIT
• Manufacturer: NEC

Data Retention Timing Chart
(1) /CE1 Controlled
Note A version : 3.0 V, B version : 2.7 V
Remark
(2) CE2 Controlled
Note A version : 3.0 V, B version : 2.7 V
Remark
V
V
CCDR
On the data retention mode by controlling /CE1, the input level of CE2 must be CE2
On the data retention mode by controlling CE2, the other pins (/CE1, Address, I/O, /WE, /OE) can be in
high impedance state.
V
CCDR
V
V
V
IL
4.5 V
0.2 V. The other pins (Address, I/O, /WE, /OE) can be in high impedance state.
IH
IL
4.5 V
IH
(MAX.)
(MAX.)
(MIN.)
(MIN.)
(MIN.)
(MIN.)
GND
GND
V
Note
V
Note
CC
CC
t
CDR
t
CDR
CE2
/CE1
Data Sheet M11657EJBV0DS
Data retention mode
Data retention mode
/CE1
CE2
V
CC
0.2 V
– 0.2 V
t
t
R
R
V
CC
PD431000A
0.2 V or CE2
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