
±5ppm, I2C Real-Time Clock
6
Maxim Integrated
DS3231M
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
FREQUENCY ERROR
vs. TEMPERATURE
DS3231M
toc06
TEMPERATURE (°C)
FREQUENCY
ERROR
(ppm)
50
0
-8
-6
-4
-2
0
2
4
6
8
10
-10
-50
100
LIMITS
VCC = 3.3V
RST OUTPUT VOLTAGE
vs. POWER SUPPLY VOLTAGE
DS3231M
toc05
SUPPLY VOLTAGE (V)
OUTPUT
VOLTAGE
(V)
4
2
1
2
3
4
5
6
0
06
VBAT = 3.0V,
TA = +25°C
TRACKS WITH VCC
RST OUTPUT VOLTAGE
vs. OUTPUT CURRENT
DS3231M
toc04
OUTPUT CURRENT (mA)
OUTPUT
VOLTAGE
(V)
4
3
2
1
0.1
0.2
0.3
0.4
0.5
0
05
VCC = 2.45V,
VBAT = 3.0V,
TA = +25°C
INT/SQW OUTPUT VOLTAGE
vs. OUTPUT CURRENT
DS3231M
toc03
OUTPUT CURRENT (mA)
OUTPUT
VOLTAGE
(V)
8
6
4
2
0.1
0.2
0.3
0.4
0.5
0
010
VCC = 2.3V,
VBAT = 0V,
TA = +25°C
BATTERY-SUPPLY CURRENT
vs. BATTERY-SUPPLY VOLTAGE
DS3231M
toc02
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(A)
5
4
3
1.5
2.0
2.5
3.0
3.5
4.0
1.0
26
VCC = 0V, EN32KHZ = 1, BBSQW = 0
+85°C
+25°C
-40°C
POWER-SUPPLY CURRENT
vs. POWER-SUPPLY VOLTAGE
DS3231M
toc01
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(A)
5
4
3
60
70
80
90
100
110
120
130
140
150
50
26
VBAT = 2.3V, EN32KHZ = 1, IOUT = 0mA
INCREASE BELOW VPF
DUE TO INTERNAL PULLUP
RESISTOR ON RST
+85°C
+25°C
-40°C
POWER-SUPPLY CURRENT
vs. SCL FREQUENCY
DS3231M
toc07
SCL FREQUENCY (kHz)
SUPPLY
CURRENT
(A)
300
200
100
90
100
110
120
130
140
150
160
170
180
190
200
80
0
400
TA = +25°C
+5.5V
+2.7V
+3.5V