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PIC18F23K20-E/ML 데이터시트(PDF) 389 Page - Microchip Technology |
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PIC18F23K20-E/ML 데이터시트(HTML) 389 Page - Microchip Technology |
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389 / 456 page ![]() 2010 Microchip Technology Inc. DS41303G-page 389 PIC18F2XK20/4XK20 FIGURE 26-9: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS TABLE 26-11: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS Note: Refer to Figure 26-4 for load conditions. 46 47 45 48 41 42 40 T0CKI T1OSO/T13CKI 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 T13CKI High Time Synchronous, no prescaler 0.5 TCY + 20 — ns Synchronous, with prescaler 10 — ns Asynchronous 30 — ns 46 Tt1L T13CKI Low Time Synchronous, no prescaler 0.5 TCY + 5 — ns Synchronous, with prescaler 10 — ns Asynchronous 30 — ns 47 Tt1P T13CKI Input Period Synchronous Greater of: 20 ns or (TCY + 40)/N — ns N = prescale value (1, 2, 4, 8) Asynchronous 60 — ns Ft1 T13CKI Clock Input Frequency Range DC 50 kHz 48 Tcke2tmrI Delay from External T13CKI Clock Edge to Timer Increment 2 TOSC 7 TOSC — |
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