PIC16F631_08 Datasheet, PDF (145/306 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F631/677/685/687/689/690
FIGURE 11-15: PWM AUTO-SHUTDOWN WITH FIRMWARE RESTART (PRSEN = 0)
Shutdown Event
ECCPASE bit
PWM Activity
PWM Period
Start of
PWM Period
Shutdown
Event Occurs
ECCPASE
Cleared by
Shutdown Firmware PWM
Event Clears
Resumes
11.4.5 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 PRSEN bit in the PWM1CON register.
If auto-restart is enabled, the ECCPASE bit will remain
set as long as the auto-shutdown condition is active.
When the auto-shutdown condition is removed, the
ECCPASE bit will be cleared via hardware and normal
operation will resume.
FIGURE 11-16: PWM AUTO-SHUTDOWN WITH AUTO-RESTART ENABLED (PRSEN = 1)
Shutdown Event
ECCPASE bit
PWM Activity
PWM Period
Start of
PWM Period
Shutdown Shutdown
Event Occurs Event Clears
PWM
Resumes
© 2008 Microchip Technology Inc.
DS41262E-page 143