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參數資料
| 型號： | U634H256CSC35 |
| 英文描述： | NVRAM (EEPROM Based) |
| 中文描述： | NVRAM中（EEPROM的基礎） |
| 文件頁數： | 3/14頁 |
| 文件大小： | 239K |
| 代理商： | U634H256CSC35 |
3
December 12, 1997
U634H256
b:
V
CC
reference levels throughout this datasheet refer to V
CCX
if that is where the power supply connection is made, or V
CAP
if V
CCX
is con-
nected to ground.
c: 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
is the average current required for the duration of the STORE cycle (STORE Cycle Time).
d:
Bringing E
≥
V
IH
will not produce standby current levels until any nonvolatile cycle in progress has timed out. See MODE SELECTION able.
The current I
CC(SB)1
is measured for WRITE/READ - ratio of 1/2.
DC Characteristics
Symbol
Conditions
C-Type
K-Type
Unit
Min.
Max.
Min.
Max.
Operating Supply Current
c
I
CC1
V
CC
V
IL
V
IH
t
c
t
c
t
c
= 5.5 V
= 0.8 V
= 2.2 V
= 25 ns
= 35 ns
= 45 ns
95
75
65
100
80
70
mA
mA
mA
Average Supply Current during
STORE
c
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
Average Supply Current during
PowerStoreCycle
I
CC4
V
CC
V
IL
V
IH
= 4.5 V
= 0.2 V
≥
V
CC
-0.2 V
4
4
mA
Standby Supply Current
d
(Cycling TTL Input Levels)
I
CC(SB)1
V
CC
E
t
c
t
c
t
c
= 5.5 V
= V
IH
= 25 ns
= 35 ns
= 45 ns
40
36
33
42
38
35
mA
mA
mA
Operating Supply Current
at t
cR
= 200 ns
c
(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
15
15
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
b
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
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相關代理商/技術參數 |
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| U634H256D1A25 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:POWERSTORE 32K X 8 NVSRAM |
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