PIC32MX1XX_12 Datasheet, PDF (161/328 Pages) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

PIC32MX1XX/2XX
15.0 OUTPUT COMPARE
Note 1: This data sheet summarizes the features
of the PIC32MX1XX/2XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 16. “Output
Compare” (DS61111) in the “PIC32
Family Reference Manual”, which is
available from the Microchip web site
(www.microchip.com/PIC32).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.
The Output Compare module (OCMP) is used to gen-
erate a single pulse or a train of pulses in response to
selected time base events. For all modes of operation,
the OCMP module compares the values stored in the
OCxR and/or the OCxRS registers to the value in the
selected timer. When a match occurs, the OCMP
module generates an event based on the selected
mode of operation.
The following are some of the key features:
• Multiple Output Compare Modules in a device
• Programmable interrupt generation on compare
event
• Single and Dual Compare modes
• Single and continuous output pulse generation
• Pulse-Width Modulation (PWM) mode
• Hardware-based PWM Fault detection and
automatic output disable
• Programmable selection of 16-bit or 32-bit time
bases
• Can operate from either of two available 16-bit
time bases or a single 32-bit time base
FIGURE 15-1:
OUTPUT COMPARE MODULE BLOCK DIAGRAM
Set Flag bit
OCxIF⁽¹⁾
OCxRS⁽¹⁾
OCxR⁽¹⁾
Comparator
Output
Logic
3
OCM<2:0>
Mode Select
SQ
R
Output
Enable
Output Enable
Logic
OCx⁽¹⁾
OCFA or OCFB⁽²⁾
0
1
OCTSEL
0
1
16
16
Timer2
Timer3
Timer2
Rollover
Timer3
Rollover
Note 1: Where ‘x’ is shown, reference is made to the registers associated with the respective output compare channels,
1 through 5.
2: The OCFA pin controls the OC1-OC4 channels. The OCFB pin controls the OC5 channel.
 2011-2012 Microchip Technology Inc.
Preliminary
DS61168E-page 161