Microchip Technology DM164130-7 Data Sheet
2010-2012 Microchip Technology Inc.
DS41414D-page 233
PIC16(L)F1946/47
FIGURE 23-14:
PWM AUTO-SHUTDOWN WITH FIRMWARE RESTART (PXRSEN = 0)
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 PxRSEN bit in the PWMxCON register.
cally restart the PWM signal once the auto-shutdown
condition has been removed. Auto-restart is enabled by
setting the PxRSEN bit in the PWMxCON register.
If auto-restart is enabled, the CCPxASE bit will remain
set as long as the auto-shutdown condition is active.
When the auto-shutdown condition is removed, the
CCPxASE bit will be cleared via hardware and normal
operation will resume.
set as long as the auto-shutdown condition is active.
When the auto-shutdown condition is removed, the
CCPxASE bit will be cleared via hardware and normal
operation will resume.
FIGURE 23-15:
PWM AUTO-SHUTDOWN WITH AUTO-RESTART (PXRSEN = 1)
Shutdown
PWM
CCPxASE bit
Activity
Event
Shutdown
Event Occurs
Shutdown
Event Clears
PWM
Resumes
Resumes
PWM Period
Start of
PWM Period
PWM Period
CCPxASE
Cleared by
Firmware
Timer
Overflow
Timer
Overflow
Timer
Overflow
Timer
Overflow
Missing Pulse
(Auto-Shutdown)
Missing Pulse
(CCPxASE not clear)
(CCPxASE not clear)
Timer
Overflow
Shutdown
PWM
CCPxASE bit
Activity
Event
Shutdown
Event Occurs
Shutdown
Event Clears
PWM Period
Start of
PWM Period
PWM Period
CCPxASE
Cleared by
Hardware
Timer
Overflow
Timer
Overflow
Timer
Overflow
Timer
Overflow
Missing Pulse
(Auto-Shutdown)
Missing Pulse
(CCPxASE not clear)
(CCPxASE not clear)
Timer
Overflow
PWM
Resumes
Resumes