Datasheet

DS1337 I
2
C Serial Real-Time Clock
Note 16:
The parameter t
OSF
is the period of time that the oscillator must be stopped for the OSF bit to be set over the
voltage range of V
CC(MIN)
≤ V
CC
≤ V
CC(MAX).
.
TYPICAL OPERATING CHARACTERISTICS
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
I
CCA
vs. V
CC
0
25
50
75
100
125
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
V
CC
(V)
I
CC
(uA)
I
CC
vs. V
CC
300
400
500
600
700
800
900
1000
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
V
CC
(V)
I
CC
(nA)
INTCN = 0
(Squarew ave on)
INTCN = 1
(Squarew ave off)
I
CCTOSC
I
CCS
I
CCS
vs. Temperature
350
400
450
500
550
600
650
700
-40.0 -20.0 0.0 20.0
40.0 60.0 80.0
V
CC
(V)
I
CC
(nA)
INTCN = 0
(Squarew ave on)
V
CC
= 3.0V
INTCN = 1
(Squarew ave off)
OSCILLATOR FREQUENCY vs. V
CC
32768
32768.05
32768.1
32768.15
32768.2
32768.25
32768.3
32768.35
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8
V
CC
(V)
FREQUENCY (Hz)
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