U635H64 Datasheet, PDF (3/13 Pages) List of Unclassifed Manufacturers – POWER STORE 8K X 8 NVSRAM

Recommended
Operating Conditions
Power Supply Voltage
Input Low Voltage
Input High Voltage
U635H64
Symbol
Conditions
V_CC
V_IL
-2 V at Pulse Width
10 ns permitted
V_IH
Min.
4.5
-0.3
2.2
Max.
5.5
0.8
V_CC+0.3
Unit
V
V
V
DC Characteristics
Operating Supply Current^b
Average Supply Current during
STORE^c
Average Supply Current during
PowerStore Cycle^c
Standby Supply Current^d
(Cycling TTL Input Levels)
Operating Supply Current
at t_cR = 200 ns^b
(Cycling CMOS Input Levels)
Standby Supply Curent^d
(Stable CMOS Input Levels)
Symbol
Conditions
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
C-Type
K-Type
Unit
Min. Max. Min. Max.
90
95 mA
80
85 mA
75
80 mA
I_CC2
V_CC
= 5.5 V
6
E
≤ 0.2 V
W
≥ V_CC-0.2 V
V_IL
≤ 0.2 V
V_IH
≥V_CC-0.2 V
I_CC4
V_CC
= 4.5 V
4
V_IL
= 0.2 V
V_IH
≥ V_CC-0.2 V
I_CC(SB)1 V_CC
= 5.5 V
E
= V_IH
t_c
= 25 ns
30
t_c
= 35 ns
23
t_c
= 45 ns
20
I_CC3
V_CC
= 5.5 V
15
W
≥ V_CC-0.2 V
V_IL
≤ 0.2 V
V_IH
≥ V_CC-0.2 V
I_CC(SB) V_CC
= 5.5 V
3
E
≥ V_CC-0.2 V
V_IL
≤ 0.2 V
V_IH
≥ V_CC-0.2 V
7 mA
4 mA
34 mA
27 mA
23 mA
15 mA
3 mA
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.
c: I_CC2 and I_CC4 are the average currents required for the duration of the respective STORE cycles (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
table. The current I_CC(SB)1 is measured for WRITE/READ - ratio of 1/2.
April 7, 2005
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