PIC18CXX2
13.1
CCP1 Module
13.2
CCP2 Module
Capture/Compare/PWM Register1 (CCPR1) is com-
prised of two 8-bit registers: CCPR1L (low byte) and
CCPR1H (high byte). The CCP1CON register controls
the operation of CCP1. All are readable and writable.
Capture/Compare/PWM Register2 (CCPR2) is com-
prised of two 8-bit registers: CCPR2L (low byte) and
CCPR2H (high byte). The CCP2CON register controls
the operation of CCP2. All are readable and writable.
TABLE 13-1: CCP MODE - TIMER RESOURCE
CCP Mode
Timer Resource
Capture
Compare
PWM
Timer1 or Timer3
Timer1 or Timer3
Timer2
TABLE 13-2: INTERACTION OF TWO CCP MODULES
CCPx Mode CCPy Mode
Interaction
Capture
Capture
Capture
TMR1 or TMR3 time-base. Time base can be different for each CCP.
Compare
The compare could be configured for the special event trigger, which clears either TMR1
or TMR3 depending upon which time base is used.
Compare
PWM
Compare
PWM
The compare(s) could be configured for the special event trigger, which clears TMR1 or
TMR3 depending upon which time base is used.
The PWMs will have the same frequency and update rate
(TMR2 interrupt).
PWM
PWM
Capture
None
None
Compare
DS39026B-page 110
Preliminary
7/99 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
