Microchip Technology DM183037 Data Sheet

DS30575A-page 320

 2012 Microchip Technology Inc.

In addition to the expanded range of modes available
through the CCPxCON, the ECCP modules have three
additional registers associated with Enhanced PWM
operation, Pulse Steering Control and auto-shutdown
features. They are:
• ECCPxDEL – Enhanced PWM x Control
• PSTRxCON – Pulse Steering x Control
• ECCPxAS – Auto-Shutdown x Control

The Enhanced CCP module may have up to four PWM
outputs, depending on the selected operating mode.
These outputs, designated as PxA through PxD, are
routed through the PPS-Lite module. Therefore, individ-
ual functions can be mapped to any of the remappable
I/O pins (RPn). The outputs that are active depend on
the ECCP operating mode selected. The pin
assignments are summarized in 

To configure the I/O pins as PWM outputs, the proper
PWM mode must be selected by setting the PxM<1:0>
and CCPxM<3:0> bits. The appropriate TRIS direction
bits for the port pins must also be set as outputs

18.1.1

ECCP MODULE AND TIMER 
RESOURCES

The ECCP modules use Timers, 1, 2, 3, 4, 6 or 8,
depending on the mode selected. These timers are
available to CCP modules in Capture, Compare or PWM
modes, as shown in 

.

The assignment of a particular timer to a module is
determined by the timer to ECCP enable bits in the
CCPTMRS0 register (

). The interactions

between the two modules are depicted in 

Capture operations are designed to be used when the
timer is configured for Synchronous Counter mode.
Capture operations may not work as expected if the
associated timer is configured for Asynchronous Counter
mode.

Capture

Timer1 or Timer3

Compare

Timer1 or Timer3

PWM

Timer2, Timer4, Timer6 or Timer8