PIC16F1824-ESLASHML datasheet(213/420 Pages) MICROCHIP

213 / 420 page

 2010 Microchip Technology Inc.

Preliminary

DS41419A-page 213

PIC16F/LF1824/1828

23.0 CAPTURE/COMPARE/PWM

MODULES

The Capture/Compare/PWM module is a peripheral

which allows the user to time and control different

events, and to generate Pulse-Width Modulation

(PWM) signals. 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 Pulse-Width Modulated

signals of varying frequency and duty cycle.

This family of devices contains two Enhanced Capture/

Compare/PWM modules (ECCP1 and ECCP2) and two

standard Capture/Compare/PWM modules (CCP3 and

CCP4).

The capture and compare functions are identical for all

four CCP modules (ECCP1, ECCP2, CCP3, and

CCP4). The only differences between CCP modules

are in the Pulse-Width Modulation (PWM) function. The

standard PWM function is identical in modules, CCP3

and CCP4. In CCP modules ECCP1 and ECCP2, the

Enhanced PWM function has slight variations from one

another. Full-Bridge ECCP modules have four

available I/O pins while Half-Bridge ECCP modules

only have two available I/O pins. See Table 23-1 for

more information.

Note 1: In devices with more than one CCP

module, it is very important to pay close

attention to the register names used. A

number placed after the module acronym

is used to distinguish between separate

modules. For example, the CCP1CON

and

CCP2CON

control

the

same

operational aspects of two completely

different CCP modules.

2: Throughout

this

section,

generic

references to a CCP module in any of its

operating modes may be interpreted as

being equally applicable to ECCP1,

ECCP2, CCP3 and CCP4. Register

names, module signals, I/O pins, and bit

names may use the generic designator ‘x’

to indicate the use of a numeral to

distinguish a particular module, when

required.

TABLE 23-1:

PWM RESOURCES

Device Name

ECCP1

ECCP2

CCP3

CCP4

PIC16F/LF1824/1828

Enhanced PWM

Full-Bridge

Enhanced PWM

Half-Bridge

Standard PWM

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