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DM163006 Datasheet(PDF) 281 Page - Microchip Technology |
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DM163006 Datasheet(HTML) 281 Page - Microchip Technology |
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281 / 320 page ![]() 2001 Microchip Technology Inc. Advance Information DS39541A-page 281 PIC18C601/801 FIGURE 22-11: TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS TABLE 22-10: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS Note: Refer to Figure 22-4 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 0.5TCY + 20 — ns With Prescaler 10 — ns 41 Tt0L T0CKI Low Pulse Width No Prescaler 0.5TCY + 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 0.5TCY + 20 — ns Synchronous, with prescaler PIC18C601/801 10 — ns PIC18LC601/801 25 — ns Asynchronous PIC18C601/801 30 — ns PIC18LC601/801 50 — ns 46 Tt1L T1CKI Low Time Synchronous, no prescaler 0.5TCY + 5 — ns Synchronous, with prescaler PIC18C601/801 10 — ns PIC18LC601/801 25 — ns Asynchronous PIC18C601/801 30 — ns PIC18LC601/801 TBD TBD 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 2TOSC 7TOSC — |
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