Technical information

APPLICATION
2-54
2.5 Reset
3800 GROUP USER’S MANUAL
2.5 Reset
2.5.1 Connection example of reset IC
Figure 2.5.2 shows the system example which switch to the RAM backup mode by detecting a drop of the
system power source voltage with the INT interrupt.
Fig. 2.5.1 Example of Poweron reset circuit
Fig. 2.5.2 RAM back-up system
System power
source voltage
+5
M62009L, M62009P, M62009FP
7
5
4
91
35
3
6
2
1
VCC1
RESET
INT
GND
Cd
V1
V
CC2
3800 group
VCC
INT
RESET
+
40
VSS
M62022L
3800 group
RESET
1
5
3
91
35
40
0.1 µF
Power source
GND
Delay capacity
4
Output
V
SS
V CC