It is designed for clock generation and time
calculation for synchronizing transmission and
reception on the logic elements inside the MICOM.
If the X-TAL specification changes, MICOM may
make an error.
(The standard components should be used.)
Port
Xin(#19)
Xout(#20)
Oscillating Frequency
4.00MHz
4.00MHz
±0.5% Error
When power is supplied to MICOM, reset circuit
initializes RAM and other parts on MICOM to
initialize all programs. Reset voltage maintains “low”
for hundreds of µsec comparing to MICOM Vcc
voltage when power is input. It also maintains
“high”(5V) during normal operation. But, when Vcc
drops to 3.4V-3.7V, reset port becomes “low”.
Port
Vcc
Reset
Voltage
5V
5V
6-2. Oscillator
6-3. Reset Circuit
6-4. Door S/W Detector
20
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