DS1554 Datasheet, PDF (11/21 Pages) Dallas Semiconductor – 256K NV Y2KC Timekeeping RAM

DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Active Supply Current
I_CC
TTL Standby Current ( CE = V_IH )
I_CC1
CMOS Standby Current
I_CC2
( CE ≥=V_CC - 0.2V)
Input Leakage Current (any input)
I_IL
-1
Output Leakage Current
(any output)
I_OL
-1
Output Logic 1 Voltage
V_OH
2.4
(I_OUT = -1.0 mA)
Output Logic 0 Voltage
(I_OUT =2.1 mA, DQ0-7 Outputs)
V_OL1
(I_OUT =10.0 mA, IRQ /FT and
V_OL2
RST Outputs)
Write Protection Voltage
V_PF
2.80
Battery Switch Over Voltage
V_SO
READ CYCLE TIMING DIAGRAM Figure 5
DS1554
(0°C to 70°C; V_CC = 3.3V ± 10%)
TYP MAX UNITS NOTES
10
30
mA
2, 3
0.7
3
mA
2, 3
0.7
2
mA
2, 3
+1
µA
+1
µA
V
1
0.4
V
1
0.4
V
1, 5
2.88
2.97
V
1
V_BAT or
V_PF
V
1, 4
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