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PIC18F44J10-E/ML 데이터시트(PDF) 317 Page - Microchip Technology |
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PIC18F44J10-E/ML 데이터시트(HTML) 317 Page - Microchip Technology |
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317 / 358 page ![]() © 2007 Microchip Technology Inc. Preliminary DS39682C-page 315 PIC18F45J10 FAMILY FIGURE 23-8: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS TABLE 23-11: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS Note: Refer to Figure 23-3 for load conditions. 46 47 45 48 41 42 40 T0CKI T1OSO/T1CKI TMR0 or TMR1 Param No. Symbol Characteristic Min Max Units Conditions 40 TT0H T0CKI High Pulse Width No prescaler 0.5 TCY + 20 — ns With prescaler 10 — ns 41 TT0L T0CKI Low Pulse Width No prescaler 0.5 TCY + 20 — ns With prescaler 10 — ns 42 TT0P T0CKI Period No prescaler TCY + 10 — ns With prescaler Greater of: 20 ns or (TCY + 40)/N —ns N = prescale value (1, 2, 4,..., 256) 45 TT1H T1CKI High Time Synchronous, no prescaler 0.5 TCY + 20 — ns Synchronous, with prescaler 10 — ns Asynchronous 30 — ns 46 TT1L T1CKI Low Time Synchronous, no prescaler 0.5 TCY + 5 — ns Synchronous, with prescaler 10 — ns Asynchronous 30 — ns 47 TT1P T1CKI Input Period Synchronous Greater of: 20 ns or (TCY + 40)/N —ns N = prescale value (1, 2, 4, 8) Asynchronous 60 — ns FT1 T1CKI Oscillator Input Frequency Range DC 50 kHz 48 TCKE2TMRI Delay from External T1CKI Clock Edge to Timer Increment 2 TOSC 7 TOSC — |
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