U634H256
Recommended
Operating Conditions
Power Supply Voltage
b
Input Low Voltage
Input High Voltage
Symbol
V
CC
V
IL
V
IH
-2 V at Pulse Width
10 ns permitted
Conditions
Min.
4.5
-0.3
2.2
Max.
5.5
0.8
V
CC
+0.3
Unit
V
V
V
C-Type
DC Characteristics
Operating Supply Current
c
Symbol
I
CC1
V
CC
V
IL
V
IH
t
c
t
c
t
c
Average Supply Current during
STORE
c
I
CC2
V
CC
E
W
V
IL
V
IH
V
CC
V
IL
V
IH
V
CC
E
t
c
t
c
t
c
Operating Supply Current
at t
cR
= 200 ns
c
(Cycling CMOS Input Levels)
Standby Supply Curent
d
(Stable CMOS Input Levels)
I
CC3
V
CC
W
V
IL
V
IH
V
CC
E
V
IL
V
IH
Conditions
Min.
= 5.5 V
= 0.8 V
= 2.2 V
= 25 ns
= 35 ns
= 45 ns
= 5.5 V
≤
0.2 V
≥
V
CC
-0.2 V
≤
0.2 V
≥
V
CC
-0.2 V
= 4.5 V
= 0.2 V
≥
V
CC
-0.2 V
= 5.5 V
= V
IH
= 25 ns
= 35 ns
= 45 ns
= 5.5 V
≥
V
CC
-0.2 V
≤
0.2 V
≥
V
CC
-0.2 V
= 5.5 V
≥
V
CC
-0.2 V
≤
0.2 V
≥
V
CC
-0.2 V
40
36
33
20
95
75
65
6
Max.
K-Type
Min.
Max.
A/M-Type
Unit
Min.
Max.
100
80
70
7
-
80
-
7
mA
mA
mA
mA
Average Supply Current during
PowerStore
Cycle
Standby Supply Current
d
(Cycling TTL Input Levels)
I
CC4
4
4
4
mA
I
CC(SB)1
42
38
35
20
-
38
-
20
mA
mA
mA
mA
I
CC(SB)
3
3
4
mA
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
CC2
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.
April 21, 2004
3
ZMD [ Zentrum Mikroelektronik Dresden AG ]
