Datasheet

Extremely Accurate I
2
C-Integrated
RTC/TCXO/Crystal
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS3231 toc01
V
CC
(V)
I
CCS
(μA)
5.04.54.03.53.02.5
25
50
75
100
125
150
0
2.0 5.5
RST ACTIVE
BSY = 0, SCL = SDA = V
CC
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS3231 toc02
V
BAT
(V)
I
BAT
(μA)
5.34.33.3
0.7
0.8
0.9
1.0
1.1
1.2
0.6
2.3
V
CC
= 0V, BSY = 0,
SDA = SCL = V
BAT
OR V
CC
EN32kHz = 1
EN32kHz = 0
SUPPLY CURRENT
vs. TEMPERATURE
DS3231 toc03
TEMPERATURE (°C)
I
BAT
(μA)
603510-15
0.7
0.8
0.9
1.0
0.6
-40 85
V
CC
= 0, EN32kHz = 1, BSY = 0,
SDA = SCL = V
BAT
OR GND
FREQUENCY DEVIATION
vs. TEMPERATURE vs. AGING VALUE
DS3231 toc04
TEMPERATURE (°C)
FREQUENCY DEVIATION (ppm)
603510-15
-30
-20
-10
0
10
20
30
40
50
60
-40
-40 85
127
32
0
-33
8
DELTA TIME AND FREQUENCY
vs. TEMPERATURE
TEMPERATURE (°C)
DELTA FREQUENCY (ppm)
DELTA TIME (MIN/YEAR)
807050 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
DS3231 toc05
CRYSTAL
+20ppm
CRYSTAL
-20ppm
TYPICAL CRYSTAL,
UNCOMPENSATED
DS3231
ACCURACY
BAND
DS3231
Maxim Integrated
7