PIC18F6520-I Datasheet, PDF (330/380 Pages) Micrel Semiconductor – 64/80-Pin High-Performance, 256 Kbit to 1 Mbit Enhanced Flash Microcontrollers with A/D

PIC18F6520/8520/6620/8620/6720/8720
TABLE 26-12: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
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
Synchronous, PIC18FXX20
with prescaler _PIC18LFXX20
0.5 TCY + 20
10
25
— ns
— ns
— ns
Asynchronous PIC18FXX20
30
— ns
PIC18LFXX20
50
— ns
46 TT1L
T13CKI
Low Time
Synchronous, no prescaler
Synchronous, PIC18FXX20
with prescaler _PIC18LFXX20
0.5 TCY + 5
10
25
— ns
— ns
— ns
Asynchronous PIC18FXX20
30
— ns
PIC18LFXX20
TBD
TBD ns
47 TT1P
T13CKI
Synchronous
Input Period
Greater of:
—
20 ns or TCY + 40
N
ns N = 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 TOSC
7 TOSC —
FIGURE 26-14: CAPTURE/COMPARE/PWM TIMINGS (ALL CCP MODULES)
CCPx
(Capture Mode)
50
51
52
CCPx
(Compare or PWM Mode)
53
54
Note: Refer to Figure 26-6 for load conditions.
DS39609B-page 328
 2004 Microchip Technology Inc.