Datasheet

PIC16F913/914/916/917/946

15.0 CAPTURE/COMPARE/PWM

(CCP) MODULE

The Capture/Compare/PWM module is a peripheral

which allows the user to time and control different

events. In Capture mode, the peripheral allows the

timing of the duration of an event. The Compare mode

allows the user to trigger an external event when a

predetermined amount of time has expired. The PWM

mode can generate a Pulse-Width Modulated signal of

varying frequency and duty cycle.

The timer resources used by the module are shown in

Table 15-1.

Additional information on CCP modules is available in

the Application Note AN594, “Using the CCP Modules”

(DS00594).

TABLE 15-1: CCP MODE – TIMER

RESOURCES REQUIRED

TABLE 15-2: INTERACTION OF TWO CCP MODULES

CCP Mode Timer Resource

Capture Timer1

Compare Timer1

PWM Timer2

CCPx Mode CCPy Mode Interaction

Capture Capture Same TMR1 time base

Capture Compare Same TMR1 time base

Compare Compare Same TMR1 time base

PWM PWM The PWMs will have the same frequency and update rate (TMR2 interrupt).

The rising edges will be aligned.

PWM Capture None

PWM Compare None

Note: CCPRx and CCPx throughout this

document refer to CCPR1 or CCPR2 and

CCP1 or CCP2, respectively.