Datasheet

dsPIC33FJXXXGPX06A/X08A/X10A
DS70593D-page 178  2009-2012 Microchip Technology Inc.
15.1 Output Compare Modes
Configure the Output Compare modes by setting the
appropriate Output Compare Mode (OCM<2:0>) bits in
the Output Compare Control (OCxCON<2:0>) register.
Table 15-1 lists the different bit settings for the Output
Compare modes. Figure 15-2 illustrates the output
compare operation for various modes. The user
application must disable the associated timer when
writing to the Output Compare Control registers to
avoid malfunctions.
TABLE 15-1: OUTPUT COMPARE MODES
FIGURE 15-2: OUTPUT COMPARE OPERATION
Note: See Section 13. “Output Compare”
(DS70209) in the “dsPIC33F/PIC24H
Family Reference Manual” for OCxR and
OCxRS register restrictions.
OCM<2:0> Mode OCx Pin Initial State OCx Interrupt Generation
000 Module Disabled Controlled by GPIO register —
001 Active-Low One-Shot 0 OCx rising edge
010 Active-High One-Shot 1 OCx falling edge
011 Toggle Current output is maintained OCx rising and falling edge
100 Delayed One-Shot 0 OCx falling edge
101 Continuous Pulse 0 OCx falling edge
110 PWM without Fault Protection ‘0’, if OCxR is zero
‘1’, if OCxR is non-zero
No interrupt
111 PWM with Fault Protection ‘0’, if OCxR is zero
‘1’, if OCxR is non-zero
OCFA falling edge for OC1 to OC4
OCxRS
TMRy
OCxR
Timer is Reset on
Period Match
Continuous Pulse
(OCM = 101)
PWM
(OCM = 110 or 111)
Active-Low One-Shot
(OCM = 001)
Active-High One-Shot
(OCM = 010)
Toggle
(OCM = 011)
Delayed One-Shot
(OCM = 100)
Output Compare
Mode Enabled