| 전자부품 데이터시트 검색엔진 |
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UPD17708 데이터시트(PDF) 173 Page - NEC |
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UPD17708 데이터시트(HTML) 173 Page - NEC |
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173 / 356 page ![]() 173 µPD17704, 17705, 17707, 17708, 17709 13.4.2 Clock selection and start/stop control blocks The clock selection block selects a basic clock to operate timer 1 counter. Four types of basic clocks can be selected by using the TM1CK1 and TM1CK0 flags. The start/stop block starts or stops the basic clock input to timer 1 by using the TM1EN flag. Figure 13-18 shows the configuration and function of each flag. 13.4.3 Count block The count block counts the basic clock with timer 1 counter, reads the count value, and issues an interrupt request when its count value coincides with the value of the timer 1 modulo register. The timer 1 counter can be reset by the TM1RES flag. The timer 1 counter is automatically reset when its value coincides with the value of the timer 1 modulo register. The value of the timer 1 counter can be read via data buffer. Data can be written to the value of the timer 1 modulo register via data buffer. Figure 13-18 shows the configuration of timer 1 counter clock selection register. Figure 13-19 shows the configuration of the timer 1 counter. Figure 13-20 shows the configuration of the timer 1 modulo register. |
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