UPD62A View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD62A

4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION

NEC => Renesas Technology 

µPD62A

8. SYSTEM CLOCK OSCILLATOR

The system clock oscillator configuration consists of a ceramic resonator oscillation circuit (fX = 2.4 to 8 MHz).

Figure 8-1. System Clock

XOUT

Ceramic resonator

µPD62A

XIN

GND

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

through which a high fluctuating current flows.

• Always make the ground point of the oscillator capacitor the same potential as the ground.

Do not ground the capacitor to a ground pattern through which a high current flows.

• Do not fetch signals from the oscillator.

Data Sheet U14474EJ1V0DS00

29

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