Casio Realistic Concertmate 500 - Page 13

Reset Circuit
VAI5V)
GND
Figure
8
Voltage VA
(Point®!
Preset Signal
(Point®)
Figure 9
At
power ON, the waveform of point
2
provides
a pulse by the differential circuit of resistor
R
and capacitor C.
The pulse initializes the internal circuits of the CPU.