Datasheet

 2007-2019 Microchip Technology Inc. DS30009905F-page 237
PIC24FJ256GA110 FAMILY
22.0 TRIPLE COMPARATOR
MODULE
The triple comparator module provides three dual input
comparators. The inputs to the comparator can be con-
figured to use any one of four external analog inputs, as
well as a voltage reference input from either the internal
band gap reference divided by two (V
BG/2) or the
comparator voltage reference generator.
The comparator outputs may be directly connected to
the CxOUT pins. When the respective COE equals ‘1’,
the I/O pad logic makes the unsynchronized output of
the comparator available on the pin.
A simplified block diagram of the module in shown in
Figure 22-1. Diagrams of the possible individual
comparator configurations are shown in Figure 22-2.
Each comparator has its own control register,
CMxCON (Register 22-1), for enabling and configuring
its operation. The output and event status of all three
comparators are provided in the CMSTAT register
(Register 22-2).
FIGURE 22-1: TRIPLE COMPARATOR MODULE BLOCK DIAGRAM
Note: This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive
reference source. For more information,
refer to “Scalable Comparator Module”
(www.microchip.com/DS39734) in the
“dsPIC33/PIC24 Family Reference Man-
ual”. The information in this data sheet
supersedes the information in the FRM.
C1
V
IN-
V
IN+
CxINB
CxINC
CxINA
CxIND
CV
REF
VBG/2
C2
V
IN-
V
IN+
C3
V
IN-
V
IN+
COE
C1OUT
Pin
CPOL
Trigger/Interrupt
Logic
CEVT
EVPOL[1:0]
COUT
Input
Select
Logic
CCH[1:0]
CREF
COE
C2OUT
Pin
CPOL
Trigger/Interrupt
Logic
CEVT
EVPOL[1:0]
COUT
COE
C3OUT
Pin
CPOL
Trigger/Interrupt
Logic
CEVT
EVPOL[1:0]
COUT