Microchip Technology Microstick for the 3V PIC24F K-series DM240013-1 DM240013-1 데이터 시트

 2011 Microchip Technology Inc.

DS31037B-page 167

Depending on the particular device, the comparator
module provides one or two analog comparators. The
inputs to the comparator can be configured to use any
one of up to four external analog inputs, as well as a
voltage reference input from either the internal band
gap reference, divided by 2 (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 is displayed in

. Diagrams of the possible individual

comparator configurations are displayed 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”

,  Section 19.

 (DS39710).

C1

V

IN

-

V

IN

+

C

X

INB

C

X

INC

C

X

INA

C

X

IND

CV

REF

V

BG

/2

C2

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

These inputs are unavailable on 14-pin (PIC24FXXKL100/200) devices.

Comparator 2 is unimplemented on PIC24FXXKL10X/20X devices.