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參數資料
| 型號： | U637H256DC25G1 |
| 英文描述： | CapStore 32K x 8 nvSRAM |
| 中文描述： | CapStore 32K的× 8非易失 |
| 文件頁數： | 3/14頁 |
| 文件大小： | 158K |
| 代理商： | U637H256DC25G1 |
U637H256
3
August 15, 2006
STK Control #ML0056
Rev 1.1
DC Characteristics
Symbol
Conditions
C-Type
K-Type
Unit
Min.
Max.
Min.
Max.
Operating Supply Current
b
I
CC1
V
CC
V
IL
V
IH
t
c
= 5.5 V
= 0.8 V
= 2.2 V
= 25 ns
95
100
mA
Average Supply Current during
c
STORE
I
CC2
V
CC
E
W
V
IL
V
IH
= 5.5 V
≤
0.2 V
≥
V
CC
-0.2 V
≤
0.2 V
≥
V
CC
-0.2 V
6
7
mA
Operating Supply Current
b
at t
cR
= 200 ns
(Cycling CMOS Input Levels)
I
CC3
V
CC
W
V
IL
V
IH
= 5.5 V
≥
V
CC
-0.2 V
≤
0.2 V
≥
V
CC
-0.2 V
20
20
mA
Standby Supply Current
d
(Cycling TTL Input Levels)
I
CC(SB)1
V
CC
E
t
c
= 5.5 V
= V
IH
= 25 ns
40
42
mA
Standby Supply Curent
d
(Stable CMOS Input Levels)
I
CC(SB)
V
CC
E
V
IL
V
IH
= 5.5 V
≥
V
CC
-0.2 V
≤
0.2 V
≥
V
CC
-0.2 V
3
3
mA
Recommended
Operating Conditions
Symbol
Conditions
Min.
Max.
Unit
Power Supply Voltage
V
CC
4.5
5.5
V
Input Low Voltage
V
IL
-2 V at Pulse Width
10 ns permitted
-0.3
0.8
V
Input High Voltage
V
IH
2.2
V
CC
+0.3
V
b:
I
CC1
and I
CC3
are depedent on output loading and cycle rate. The specified values are obtained with outputs unloaded.
The current I
CC1
is measured for WRITE/READ - ratio of 1/2.
I
CC2
is the average current required for the duration of the
SoftStore
STORE cycle.
Bringing E
≥
V
IH
will not produce standby current levels until a software initiated nonvolatile cycle in progress has timed out.
See MODE SELECTION table. The current I
CC(SB)1
is measured for WRITE/READ - ratio of 1/2.
c:
d:
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