IDT1338B-31
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM
RTC
Typical Operating Characteristics
IBAT vs VBAT
(IDT1338-31)
Icc vs Vcc
(IDT1338-31)
734
694
654
614
574
534
494
25
20
15
10
5
SQWE=1
SQWE=0
SCL=400kHz
SCL=0Hz
0
1.3
1.8
2.3
2.8
3.3
2.7
3.2
3.7
4.2
4.7
5.2
VBat (V)
Vcc (V)
Oscillator Frequency vs Supply Voltage
IBAT vs Temperature
32767.950000
32767.900000
32767.850000
32767.800000
32767.750000
800
700
600
500
400
SQWE=1
SQWE=0
Freq
-40
-20
0
20
40
60
80
2.7
3.2
3.7
4.2
4.7
5.2
Temperature (C)
Oscillator Supply Voltage (V)
IDT™ REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 15
IDT1338B-31 REV A 112309