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UPD64AMC датащи(PDF) 29 Page - NEC |
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UPD64AMC датащи(HTML) 29 Page - NEC |
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29 / 64 page ![]() 29 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 µ |
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