Datasheet

PIC18F1220/1320
DS39605F-page 262 © 2007 Microchip Technology Inc.
TABLE 22-9: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
FIGURE 22-11: CAPTURE/COMPARE/PWM TIMINGS (ALL CCP MODULES)
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 T
CY + 20 — ns
With prescaler 10 — ns
42 Tt0P T0CKI Period No prescaler T
CY + 10 — ns
With prescaler Greater of:
20 ns or T
CY + 40
N
—nsN = prescale
value
(1, 2, 4,..., 256)
45 Tt1H T13CKI High Time Synchronous, no prescaler 0.5 TCY + 20 — ns
Synchronous,
with prescaler
PIC18F1X20 10 — ns
PIC18LF1X20 25 — ns
Asynchronous PIC18F1X20 30 — ns
PIC18LF1X20 50 — ns
46 Tt1L T13CKI Low Time Synchronous, no prescaler 0.5 T
CY + 5 — ns
Synchronous,
with prescaler
PIC18F1X20 10 — ns
PIC18LF1X20 25 — ns
Asynchronous PIC18F1X20 30 — ns
PIC18LF1X20 50 — ns
47 Tt1P T13CKI Input
Period
Synchronous Greater of:
20 ns or TCY + 40
N
—nsN = prescale
value
(1, 2, 4, 8)
Asynchronous 60 — ns
Ft1 T13CKI Oscillator Input Frequency Range DC 50 kHz
48 Tcke2tmrI Delay from External T13CKI Clock Edge to
Timer Increment
2 T
OSC 7 TOSC —
Note: Refer to Figure 22-5 for load conditions.
CCPx
(Capture Mode)
50 51
52
CCPx
53
54
(Compare or PWM Mode)