Datasheet

DS1338 I
2
C RTC with 56-Byte NV RAM
6 of 16
TYPICAL OPERATING CHARACTERISTICS
I
BAT
vs. V
BAT
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
V
BAT
(V)
SUPPLY CURRENT (nA
V
CC
=0V
RS1 =RS0=1
I
BATOSC2
(
SQWE = 1 )
I
BATOSC
1
( SQWE = 0 )
I
BAT
vs. Temperature
V
BAT
= 3.0V
600
650
700
750
800
850
900
950
1000
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
SUPPLY CURRENT (nA
V
CC
=0V
SQWE=1
SQWE=0
I
CC
vs. V
CC
50
75
100
125
150
175
200
225
250
1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
V
CC
(V)
SUPPLY CURRENT (uA
SCL=400kHz
SCL =SDA =0 Hz
Oscillator Frequency vs. Supply Voltage
32768.0
32768.1
32768.2
32768.3
32768.4
32768.5
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8
Oscillator Supply Voltage (V)
FREQUENCY (Hz)