Datasheet

PIC18F2585/2680/4585/4680
DS39625C-page 166 Preliminary © 2007 Microchip Technology Inc.
FIGURE 15-1: CAPTURE MODE OPERATION BLOCK DIAGRAM
CCPR1H CCPR1L
TMR1H TMR1L
Set CCP1IF
TMR3
Enable
Q1:Q4
CCP1CON<3:0>
CCP1 pin
Prescaler
÷ 1, 4, 16
and
Edge Detect
TMR1
Enable
T3ECCP1
T3ECCP1
ECCPR1H
ECCPR1L
TMR1H TMR1L
Set ECCP1IF
TMR3
Enable
ECCP1CON<3:0>
ECCP1 pin
Prescaler
÷ 1, 4, 16
TMR3H TMR3L
TMR1
Enable
T3ECCP1
T3CCP1
T3ECCP1
T3CCP1
TMR3H TMR3L
and
Edge Detect
4
4
4