UPD62A NEC, UPD62A Datasheet - Page 29

• Manufacturer Part Number: UPD62A
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC

8. SYSTEM CLOCK OSCILLATOR
The system clock oscillator configuration consists of a ceramic resonator oscillation circuit (f
The system clock oscillator stops its oscillation when reset or in STOP mode.
Caution When using the system clock oscillator, wire as follows in the area enclosed by the broken lines
in the above figure to avoid an adverse effect from wiring capacitance.
• Keep the wiring length as short as possible.
• Do not cross the wiring with the other signal lines. Do not route the wire near a signal line
• Always make the ground point of the oscillator capacitor the same potential as the ground.
• Do not fetch signals from the oscillator.
through which a high fluctuating current flows.
Do not ground the capacitor to a ground pattern through which a high current flows.
Ceramic resonator
X
OUT
Figure 8-1. System Clock
Data Sheet U14474EJ1V0DS00
PD62A
X
IN
GND
X
= 2.4 to 8 MHz).
PD62A
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