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UPD178002 Datasheet(PDF) 17 Page - NEC |
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UPD178002 Datasheet(HTML) 17 Page - NEC |
17 / 48 page ![]() 17 µPD178002, 178003 Data Sheet U12628EJ3V0DS00 5.4 Buzzer Output Control Circuit Clocks with the following frequencies can be output as buzzer (BEEP) output. • 1.5 kHz/3 kHz/6 kHz (4.5 MHz crystal resonator for system clock) Figure 5-4. Block Diagram of Buzzer Output Control Circuit Internal bus 1.5 kHz 3 kHz 6 kHz TCL27 TCL26 TCL25 3 PM36 Timer clock select register 2 (TCL2) (PM3) Port mode register 3 BEEP/P36 P36 output latch |
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