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MM1075 Datasheet, PDF (10/10 Pages) Mitsumi Electronics, Corp. – System Reset (with built-in watchdog timer) Monolithic IC
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MITSUMI
Reset time temperature
(for watchdog timer)
VCC=5V (Cr=0.1µF)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
-40 -20 0 20 40 60 80 100
Ambient temperature Ta (°C)
CT value for reset hold time during power
supply rise
105
104
103
102
101
100
10-3 10-2 10-1 100 101
CT capacitance (µF)
CT value for watchdog timer monitoring
time
System Reset (with built-in watchdog timer) MM1075
Watchdog timer monitoring time
temperature
VCC=5V (Cr=0.1µF)
100
6PIN 5MΩ PULL UP
10
6PIN 100kΩ PULL UP
-40 -20 0 20 40 60 80 100
Ambient temperature Ta (°C)
CT value for reset time (for watchdog timer)
103
102
101
100
10-1
10-2
10-3 10-2 10-1 100 101
CT capacitance (µF)
Type of timer time adjustment
CT value for watchdog timer monitoring time
105
104
103
102
101
100
10-3 10-2 10-1 100 101
CT capacitance (µF)
104
103
102
101
100
10-1
Connect R between
Rct and VCC
R=
OPEN
2.2MΩ
1kΩ
470kΩ
200kΩ
10-3 10-2 10-1 100 101
CT capacitance (µF)