Microchip Technology Microstick for the 5V PIC24F K-series DM240013-2 DM240013-2 Data Sheet

 2013 Microchip Technology Inc.

DS30003030B-page 235

The comparator module provides three dual input
comparators. The inputs to the comparator can be
configured to use any one of four external analog
inputs, as well as a voltage reference input from either
the Internal Band Gap Buffer 1 (BGBUF1) or the com-
parator voltage reference generator.

The comparator outputs may be directly connected to
the CxOUT pins. When the respective COE bit 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 is shown in

. Diagrams of the possible individual

comparator configurations are shown in 

Each comparator has its own control register,
CMxCON (

), for enabling and configuring

its operation. The output and event status of all three
comparators is provided in the CMSTAT register
(

This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive refer-
ence source. For more information on the
Comparator module, refer to the “PIC24F
Family Reference Manual”

, “Scalable

 (DS39734).

C1

V

IN

-

V

IN

+

C

X

INB

C

X

INC

C

X

INA

C

X

IND

CV

REF

BGBUF1

C3

V

IN

-

V

IN

+

COE

C1OUT

Pin

CPOL

CEVT

EVPOL<1:0>

COUT

Input

Select

Logic

CCH<1:0>

CREF<1:0>

COE

C3OUT

Pin

CPOL

CEVT

EVPOL<1:0>

COUT

C2

V

IN

-

V

IN

+

COE

C2OUT

Pin

CPOL

CEVT

COUT

Trigger/Interrupt

Logic

Trigger/Interrupt

Logic

EVPOL<1:0>

Trigger/Interrupt

Logic