PIC18F4550ESOSQTP datasheet(159/438 Pages) MICROCHIP

Part #	PIC18F4550ESOSQTP

Description	28/40/44-Pin, High-Performance, Enhanced Flash, USB Microcontrollerswith nanoWatt Technology

PDF	438 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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159 / 438 page

DS39632E-page 157

PIC18F2455/2550/4455/4550

16.4.5

FULL-BRIDGE MODE

In Full-Bridge Output mode, four pins are used as

outputs; however, only two outputs are active at a time.

In the Forward mode, pin P1A is continuously active

and pin P1D is modulated. In the Reverse mode, pin

P1C is continuously active and pin P1B is modulated.

These are illustrated in Figure 16-6.

P1A, P1B, P1C and P1D outputs are multiplexed with

the

PORTC<2>,

PORTD<5>,

PORTD<6>

and

PORTD<7> data latches. The TRISC<2>, TRISD<5>,

TRISD<6> and TRISD<7> bits must be cleared to

make the P1A, P1B, P1C and P1D pins outputs.

FIGURE 16-6:

FULL-BRIDGE PWM OUTPUT

Period

Duty Cycle

P1A(2)

P1B(2)

P1C(2)

P1D(2)

Forward Mode

(1)

Period

Duty Cycle

P1A(2)

P1C(2)

P1D(2)

P1B(2)

Reverse Mode

(1)

Note 1: At this time, the TMR2 register is equal to the PR2 register.

Note 2: Output signal is shown as active-high.

PIC18F4550ESOSQTP Datasheet(PDF) 159 Page - Microchip Technology