DS1553 Datasheet, PDF (12/20 Pages) Maxim Integrated Products – 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM

DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM
DC ELECTRICAL CHARACTERISTICS
(V_CC = 3.3V ±10%, T_A = Over the operating range.)
PARAMETER
SYMBOL MIN
Active Supply Current
I_CC
TTL Standby Current (CE = V_IH)
CMOS Standby Current
(CE  V_CC - 0.2V)
Input Leakage Current (Any Input)
I_CC1
I_CC2
I_IL
-1
Output Leakage Current (Any Output)
I_OL
-1
Output Logic 1 Voltage
(I_OUT = -1.0mA)
V_OH
2.4
I_OUT = 2.1mA,
Output Logic 0 ^{DQ0–7 Outputs}
V_OL1
Voltage
I_OUT = 7.0mA, IRQ/FT
and RST Outputs
V_OL2
Write Protection Voltage
V_PF
2.75
Battery Switchover Voltage
V_SO
Figure 5. Read Cycle Timing Diagram
TYP
10
0.7
0.7
V_BAT
or V_PF
MAX
30
2
UNITS
mA
mA
NOTES
2, 3
2, 3
2
mA
2, 3
+1
A
+1
A
V
1
0.4
V
1
0.4
V
1, 5
2.97
V
1
V
1, 4
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