PIC12F1822T-I/SL 查看數據表（PDF） - Microchip Technology

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PIC12F1822T-I/SL

8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC12F/LF1822/16F/LF1823

FIGURE 23-14:

PWM AUTO-SHUTDOWN WITH FIRMWARE RESTART (P1RSEN = 0)

Timer

Overflow

Missing Pulse

(Auto-Shutdown)

Timer

Overflow

Timer

Overflow

Missing Pulse

(CCP1ASE not clear)

Timer

Overflow

Timer

Overflow

PWM Activity

Shutdown Event

PWM Period

Start of

PWM Period

CCP1ASE bit

Shutdown

Event Occurs

Shutdown

Event Clears

PWM

Resumes

CCP1ASE

Cleared by

Firmware

23.4.4 AUTO-RESTART MODE

The Enhanced PWM can be configured to automati-

cally restart the PWM signal once the auto-shutdown

condition has been removed. Auto-restart is enabled by

setting the P1RSEN bit in the PWM1CON register.

If auto-restart is enabled, the CCP1ASE bit will remain

set as long as the auto-shutdown condition is active.

When the auto-shutdown condition is removed, the

CCP1ASE bit will be cleared via hardware and normal

operation will resume.

FIGURE 23-15:

PWM AUTO-SHUTDOWN WITH AUTO-RESTART (P1RSEN = 1)

Timer

Overflow

Missing Pulse

(Auto-Shutdown)

Timer

Overflow

Timer

Overflow

Missing Pulse

(CCP1ASE not clear)

Timer

Overflow

Timer

Overflow

PWM Activity

Shutdown Event

PWM Period

Start of

PWM Period

CCP1ASE bit

Shutdown

Event Occurs

Shutdown

Event Clears

PWM

Resumes

CCP1ASE

Cleared by

Hardware

DS41413A-page 216

Preliminary

 2010 Microchip Technology Inc.

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