Microchip Technology MA160014 Data Sheet

PIC18(L)F2X/4XK22

DS41412F-page 192

 2010-2012 Microchip Technology Inc.

FIGURE 14-7:

EXAMPLE ENHANCED PWM OUTPUT RELATIONSHIPS (ACTIVE-LOW STATE)

Period

Signal

PRx+1

PxM<1:0>

PxA Modulated

PxB Modulated

PxA Active

PxB Inactive

PxC Inactive

PxD Modulated

PxA Inactive

PxB Modulated

PxC Active

PxD Inactive

Pulse

Width

(Single Output)

(Half-Bridge)

(Full-Bridge,

Forward)

(Full-Bridge,

Reverse)

Delay

(1)

Delay

(1)

Relationships:

•

Period = 4 * T

OSC

* (PRx + 1) * (TMRx Prescale Value)

•

Pulse Width = T

OSC

* (CCPRxL<7:0>:CCPxCON<5:4>) * (TMRx Prescale Value)

•

Delay = 4 * T

OSC

* (PWMxCON<6:0>)

Note

Dead-band delay is programmed using the PWMxCON register (