DS1553 Datasheet, PDF (10/19 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%, over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX UNITS NOTES
Active Supply Current
I_CC
10
30
mA
2, 3
TTL Standby Current (CE = V_IH)
CMOS Standby Current
(CE ³ V_CC - 0.2V)
Input Leakage Current (Any Input)
I_CC1
0.7
2
mA
2, 3
I_CC2
0.7
2
mA
2, 3
I_IL
-1
+1
mA
Output Leakage Current (Any Output)
I_OL
-1
Output Logic 1 Voltage
(I_OUT = -1.0mA)
Output Logic 0 Voltage
(I_OUT = 2.1mA, DQ0–7 Outputs)
V_OH
2.4
V_OL1
(I_OUT = 7.0mA, IRQ/FT and RST Outputs)
V_OL2
+1
mA
V
1
0.4
V
1
0.4
V
1, 5
Write Protection Voltage
Battery Switchover Voltage
V_PF
2.75
2.97
V
1
V_SO
V_BAT
or V_PF
V
1, 4
Figure 5. Read Cycle Timing Diagram
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