PIC18F46K80T-I/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F46K80T-I/SP

28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN™ and nanoWatt XLP Technology

Microchip Technology 

PIC18F66K80 FAMILY

FIGURE 20-12: PWM AUTO-SHUTDOWN WITH FIRMWARE RESTART (P1RSEN = 0)

Shutdown Event

PWM Period

ECCP1ASE bit

PWM Activity

Start of

PWM Period

Normal PWM

Shutdown

Event Occurs

ECCP1ASE

Cleared by

Shutdown Firmware PWM

Event Clears

Resumes

20.4.5 AUTO-RESTART MODE

The Enhanced PWM can be configured to automatically

restart the PWM signal once the auto-shutdown condi-

tion has been removed. Auto-restart is enabled by

setting the P1RSEN bit (ECCP1DEL<7>).

If auto-restart is enabled, the ECCP1ASE bit will

remain set as long as the auto-shutdown condition is

active. When the auto-shutdown condition is removed,

the ECCP1ASE bit will be cleared via hardware and

normal operation will resume.

The module will wait until the next PWM period begins,

however, before re-enabling the output pin. This behav-

ior allows the auto-shutdown with auto-restart features

to be used in applications based on current mode of

PWM control.

FIGURE 20-13: PWM AUTO-SHUTDOWN WITH AUTO-RESTART ENABLED (P1RSEN = 1)

Shutdown Event

PWM Period

ECCP1ASE bit

PWM Activity

Start of

PWM Period

Normal PWM

Shutdown

Event Occurs

Shutdown

Event Clears

PWM

Resumes

DS39977F-page 280

 2010-2012 Microchip Technology Inc.

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