UPD64AMC datasheet(29/64 Pages) NEC

Part #	UPD64AMC

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

PDF	64 Pages

Scroll/Zoom	100%

Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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29 / 64 page

µPD64A, 65

Data Sheet U14380EJ2V0DS00

8. SYSTEM CLOCK OSCILLATOR

The system clock oscillator consists of oscillators for ceramic resonators (fX = 2.4 to 8 MHz).

Figure 8-1. System Clock

The system clock oscillator stops its oscillation when reset or in STOP mode.

Caution When using the system clock oscillator, wire area indicated by the dotted-line in the diagram

as follows to reduce the effects of the wiring capacitance, etc.

•

Make the wiring as short as possible.

•

Do not allow the wiring to intersect other signal lines. Do not wire close to lines through

which large fluctuating currents flow.

•

Make sure that the point where the oscillator capacitor is installed is always at the same

electric potential as the ground. Never earth with a ground pattern through which large

currents flow.

•

Do not extract signals from the oscillator.

PD64A, 65

XOUT

XIN

GND

Ceramic resonator

UPD64AMC Datasheet(PDF) 29 Page - NEC