PIC18F258-I/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F258-I/SP

28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module

Microchip Technology 

PIC18FXX8

16.5.3 FULL-BRIDGE MODE

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

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

the Forward mode, pin RD4/PSP4/ECCP1/P1A is con-

tinuously active and pin RD7/PSP7/P1D is modulated.

In the Reverse mode, RD6/PSP6/P1C pin is continu-

ously active and RD5/PSP5/P1B pin is modulated.

These are illustrated in Figure 16-5.

FIGURE 16-5:

FULL-BRIDGE PWM OUTPUT

FORWARD MODE

Period

P1A(2)

Duty Cycle

P1B(2)

P1A, P1B, P1C and P1D outputs are multiplexed with

the PORTD<4:7> data latches. The TRISD<4:7> bits

must be cleared to make the P1A, P1B, P1C and P1D

pins output.

P1C(2)

P1D(2)

(1)

(1)

REVERSE MODE

P1A(2)

Duty Cycle

Period

P1B(2)

P1C(2)

P1D(2)

(1)

(1)

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

Note 2: Output signal is shown as asserted high.

© 2006 Microchip Technology Inc.

DS41159E-page 137

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