UL634H256 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
UL634H256 Datasheet PDF : 14 Pages
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Recommended
Operating Conditions
Power Supply Voltageb
Input Low Voltage
Input High Voltage
UL634H256
Symbol
Conditions
VCC
VIL
-2 V at Pulse Width
10 ns permitted
VIH
Min.
2.7
-0.3
2.2
Max.
3.6
0.8
VCC+0.3
Unit
V
V
V
DC Characteristics
Operating Supply Currentc
Average Supply Current during
STOREc
Average Supply Current during
PowerStore Cycle
Standby Supply Currentd
(Cycling TTL Input Levels)
Operating Supply Current
at tcR = 200 nsc
(Cycling CMOS Input Levels)
Standby Supply Curentd
(Stable CMOS Input Levels)
Symbol
Conditions
C-Type
K-Type
Unit
Min. Max. Min. Max.
ICC1
VCC
VIL
VIH
= 3.6 V
= 0.8 V
= 2.2 V
tc
= 45 ns
35
tc
= 55 ns
30
ICC2
VCC
= 3.6 V
3
E
≤ 0.2 V
W
≥ VCC-0.2 V
VIL
≤ 0.2 V
VIH
≥ VCC-0.2 V
ICC4
VCC
= 2.7 V
2
VIL
= 0.2 V
VIH
≥ VCC-0.2 V
ICC(SB)1
VCC
E
= 3.6 V
= VIH
37 mA
32 mA
4 mA
2 mA
tc
= 45 ns
9
tc
= 55 ns
8
ICC3
VCC
= 3.6 V
8
W
≥ VCC-0.2 V
VIL
≤ 0.2 V
VIH
≥ VCC-0.2 V
ICC(SB)
VCC
= 3.6 V
1
E
≥ VCC-0.2 V
VIL
≤ 0.2 V
VIH
≥ VCC-0.2 V
10 mA
9 mA
8 mA
1 mA
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 ≥ VIH will not produce standby current levels until any nonvolatile cycle in progress has timed out. See MODE SELECTION
table. The current ICC(SB)1 is measured for WRITE/READ - ratio of 1/2.
January 09, 2002
3
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