DS3232
Extremely Accurate I
2
C RTC with
Integrated Crystal and SRAM
_____________________________________________________________________
7
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS3232 toc01
V
CC
(V)
SUPPLY CURRENT (nA)
5.3
4.8
4.3
2.8
3.3
3.8
50
100
150
125
75
25
0
2.3
RST ACTIVE
SCL = SDA = V
CC
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS3232 toc02
V
BAT
(V)
SUPPLY CURRENT (nA)
5.3
4.8
4.3
2.8
3.3
3.8
800
900
1000
950
850
750
700
2.3
V
CC
= 0V
BB32kHz = 0
BBSQW = 0
BSY = 0
SUPPLY CURRENT
vs. TEMPERATURE
DS3232 toc03
TEMPERATURE (
°
C)
SUPPLY CURRENT (
μ
A)
80
60
40
-20
0
20
0.700
0.800
0.900
0.600
-40
V
CC
= 0V
BB32kHz = 0
V
BAT
= 3.4V
V
BAT
= 3.0V
FREQUENCY DEVIATION
vs. TEMPERATURE vs. AGING
DS3232 toc04
TEMPERATURE (
°
C)
FREQUENCY DEVIATION (ppm)
80
60
40
-20
0
20
35
25
15
5
-5
-15
-25
-35
75
65
55
45
-45
-40
AGING = -128
AGING = -33
AGING = +127
AGING = 0
AGING = +32
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
DELTA TIME AND FREQUENCY
vs. TEMPERATURE
TEMPERATURE (
°
C)
DELTA FREQUENCY (ppm)
DELTA TIME (MIN/YEAR)
80
70
50 60
-10 0 10 20 30 40
-30 -20
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-200
-80
-60
-40
-20
0
-100
-40
DS3232 toc05
CRYSTAL
+20ppm
CRYSTAL
-20ppm
TYPICAL CRYSTAL,
UNCOMPENSATED
DS3232
ACCURACY
BAND
