Rainbow Electronics DS1338 - Manual (Page 6)

DS1338 I 2 C RTC with 56-Byte NV RAM
6 of 15
TYPICAL OPERATING CHARACTERISTICS
(V CC = 3.3V, T A = +25°C, unless otherwise noted.)
OSCILLATOR FREQUENCY vs. V BAT
DS1338 toc05
V BAT (V)
FREQUENCY (Hz)
5.3 4.8 3.8 4.3 2.3 2.8 3.3 1.8
32767.66
32767.67
32767.68
32767.69
32767.70
32767.71
32767.72
32767.73
32767.74
32767.75
32767.65
1.3
V CC = 0V
I CCA vs. V CC
SQUARE-WAVE ON
DS1338 toc04
V CC (V)
SUPPLY CURRENT (
m
A)
5.3 4.8 3.8 4.3 2.8 3.3 2.3
75
100
125
150
175
200
225
250
275
50
1.8
I BAT0SC1 vs. TEMPERATURE
V BAT = 3.0V
DS1338 toc03
TEMPERATURE ( C)
SUPPLY CURRENT (nA)
60 40 20 0 -20
750
800
850
700
-40 80
V CC = 0V
SUPPLY CURRENT (nA)
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
700
I BAT0SC2 vs. V CC
SQUARE-WAVE ON
DS1338 toc02
V BAT (V)
4.8 4.3 1.8 2.3 2.8 3.3 3.8 1.3 5.3
V CC = 0V
I BAT0SC1 vs. V CC
SQUARE-WAVE OFF
DS1338 toc01
V BAT (V)
SUPPLY CURRENT (nA)
4.8 4.3 1.8 2.3 2.8 3.3 3.8
650
700
750
800
850
900
950
1000
600
1.3 5.3
V CC = 0V