DS1307 64 x 8, Serial, I
2
C Real-Time Clock
TYPICAL OPERATING CHARACTERISTICS
(V
CC
= 5.0V, T
A
= +25°C, unless otherwise noted.)
I
CCS
vs. V
CC
120
110
100
90
SUPPLY CURRENT (uA)
80
70
60
50
40
30
20
10
0
1.0
2.0
3.0
V
CC
(V)
4.0
5.0
100
2.0
2.5
V
BACKUP
(V)
3.0
3.5
150
SUPPLY CURRENT (nA)
300
350
V
BAT
=3.0V
I
BAT
vs. V
BAT
400
V
CC
= 0V
SQW=32kHz
250
SQW off
200
I
BAT
vs. Temperature
V
CC
=0V, V
BAT
=3.0
SQW/OUT vs. Supply Voltage
32768.5
325.0
SQW=32kHz
32768.4
SUPPLY CURRENT (nA)
275.0
FREQUENCY (Hz)
SQW off
32768.3
32768.2
225.0
32768.1
32768
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Supply (V)
175.0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
5 of 14