Microchip Technology MA160014 Data Sheet

 2010-2012 Microchip Technology Inc.

DS41412F-page 179

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 three Enhanced
Capture/Compare/PWM modules (ECCP1, ECCP2,
and ECCP3) and two standard Capture/Compare/PWM
modules (CCP4 and CCP5).

The Capture and Compare functions are identical for all
CCP/ECCP modules. The difference between CCP
and ECCP modules are in the Pulse-Width Modulation
(PWM) function. In CCP modules, the standard PWM
function is identical. In ECCP modules, the Enhanced
PWM function has either full-bridge or half-bridge PWM
output. Full-bridge ECCP modules have four available
I/O pins while half-bridge ECCP modules only have two
available I/O pins. ECCP PWM modules are backward
compatible with CCP PWM modules and can be
configured as standard PWM modules. See 

to determine the CCP/ECCP functionality available on
each device in this family.

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, ECCP3, CCP4 and CCP5.
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.

PIC18(L)F23K22
PIC18(L)F24K22
PIC18(L)F25K22
PIC18(L)F26K22

Enhanced PWM 

Full-Bridge

Enhanced PWM 

Half-Bridge

Enhanced PWM 

Half-Bridge

Standard PWM

Standard PWM 

(Special Event Trigger)

PIC18(L)F43K22
PIC18(L)F44K22
PIC18(L)F45K22
PIC18(L)F46K22

Enhanced PWM 

Full-Bridge

Enhanced PWM 

Full-Bridge

Enhanced PWM 

Half-Bridge

Standard PWM

Standard PWM

(Special Event Trigger)