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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M38B53M4-059FP датащи(PDF) 111 Page - Mitsubishi Electric Semiconductor |
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M38B53M4-059FP датащи(HTML) 111 Page - Mitsubishi Electric Semiconductor |
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111 / 355 page  38B5 Group User’s Manual APPLICATION 2-23 2.2 Timer (3) Timer application example 2: Piezoelectric buzzer output Outline: The rectangular waveform output function of the timer is applied for a piezoelectric buzzer output. Specifications: •The rectangular waveform, dividing the clock f(XIN) = 4.19 MHz (222 Hz) into about 2 kHz (2048 Hz), is output from the P46/T3OUT pin. •The level of the P46/T3OUT pin is fixed to “H” while a piezoelectric buzzer output stops. Figure 2.2.18 shows a peripheral circuit example, and Figure 2.2.19 shows the timers connection and setting of division ratios. Figures 2.2.20 shows the relevant registers setting, and Figure 2.2.21 shows the control procedure. Fig. 2.2.18 Peripheral circuit example Fig. 2.2.19 Timers connection and setting of division ratios 38B5 Group T3OUT PiPiPi..... 244 µs T3OUT output The “H” level is output while a piezoelectric buzzer output stops. 244 µs Set a division ratio so that the underflow output period of the timer 3 can be 244 µs. f(XIN) 4.19 MHz 1/161/64 1/2 T3OUT Timer 3Fixed |
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