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U634H256SK25 Datasheet(PDF) 3 Page - Zentrum Mikroelektronik Dresden AG

Part # U634H256SK25
Description  POWERSTORE 32K X 8 NVSRAM
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Manufacturer  ZMD [Zentrum Mikroelektronik Dresden AG]
Direct Link  http://www.zmdi.com
Logo ZMD - Zentrum Mikroelektronik Dresden AG

U634H256SK25 Datasheet(HTML) 3 Page - Zentrum Mikroelektronik Dresden AG

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April 21, 2004
U634H256
DC Characteristics
Symbol
Conditions
C-Type
K-Type
A/M-Type
Unit
Min. Max. Min. Max. Min. Max.
Operating Supply Currentc
ICC1
VCC
VIL
VIH
tc
tc
tc
= 5.5 V
= 0.8 V
= 2.2 V
= 25 ns
= 35 ns
= 45 ns
95
75
65
100
80
70
-
80
-
mA
mA
mA
Average Supply Current during
STOREc
ICC2
VCC
E
W
VIL
VIH
= 5.5 V
≤ 0.2 V
≥ VCC-0.2 V
≤ 0.2 V
≥ VCC-0.2 V
677
mA
Average Supply Current during
PowerStore Cycle
ICC4
VCC
VIL
VIH
= 4.5 V
= 0.2 V
≥ VCC-0.2 V
444
mA
Standby Supply Currentd
(Cycling TTL Input Levels)
ICC(SB)1 VCC
E
tc
tc
tc
= 5.5 V
= VIH
= 25 ns
= 35 ns
= 45 ns
40
36
33
42
38
35
-
38
-
mA
mA
mA
Operating Supply Current
at tcR = 200 nsc
(Cycling CMOS Input Levels)
ICC3
VCC
W
VIL
VIH
= 5.5 V
≥ VCC-0.2 V
≤ 0.2 V
≥ VCC-0.2 V
20
20
20
mA
Standby Supply Curentd
(Stable CMOS Input Levels)
ICC(SB)
VCC
E
VIL
VIH
= 5.5 V
≥ VCC-0.2 V
≤ 0.2 V
≥ VCC-0.2 V
334
mA
Recommended
Operating Conditions
Symbol
Conditions
Min.
Max.
Unit
Power Supply Voltageb
VCC
4.5
5.5
V
Input Low Voltage
VIL
-2 V at Pulse Width
10 ns permitted
-0.3
0.8
V
Input High Voltage
VIH
2.2
VCC+0.3
V
b: VCC reference levels throughout this datasheet refer to VCCX if that is where the power supply connection is made, or VCAP if VCCX is con-
nected to ground.
c: ICC1 and ICC3 are depedent on output loading and cycle rate. The specified values are obtained with outputs unloaded.
The current ICC1 is measured for WRITE/READ - ratio of 1/2.
ICC2 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 ICC(SB)1 is measured for WRITE/READ - ratio of 1/2.


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