Datasheet

© 2008 Microchip Technology Inc. DS39631E-page 347
PIC18F2420/2520/4420/4520
FIGURE 26-11: CAPTURE/COMPARE/PWM TIMINGS (ALL CCP MODULES)
TABLE 26-12: CAPTURE/COMPARE/PWM REQUIREMENTS (ALL CCP MODULES)
Param
No.
Symbol Characteristic Min Max Units Conditions
50 TccL CCPx Input Low
Time
No prescaler 0.5 T
CY + 20 — ns
With
prescaler
PIC18FXXXX 10 — ns
PIC18LFXXXX 20 — ns V
DD = 2.0V
51 TccH CCPx Input
High Time
No prescaler 0.5 TCY + 20 — ns
With
prescaler
PIC18FXXXX 10 — ns
PIC18LFXXXX 20 — ns V
DD = 2.0V
52 TccP CCPx Input Period 3 TCY + 40
N
—nsN = prescale
value (1, 4 or 16)
53 TccR CCPx Output Fall Time PIC18FXXXX — 25 ns
PIC18LFXXXX — 45 ns VDD = 2.0V
54 TccF CCPx Output Fall Time PIC18FXXXX — 25 ns
PIC18LFXXXX — 45 ns V
DD = 2.0V
Note: Refer to Figure 26-5 for load conditions.
CCPx
(Capture Mode)
50 51
52
CCPx
53
54
(Compare or PWM Mode)