Microchip Technology MA320002 Data Sheet

© 2011 Microchip Technology Inc.

DS61143H-page 125

The PIC32MX3XX/4XX Analog Comparator module
contains one or more comparator(s) that can be
configured in a variety of ways. 

Following are some of the key features of this module:

• Selectable inputs available include:

- Analog inputs multiplexed with I/O pins

- On-chip internal absolute voltage reference 

(IV

REF

)

- Comparator voltage reference (CV

REF

)

• Outputs can be inverted

• Selectable interrupt generation

A block diagram of the comparator module is illustrated
in 

.

Note 1: This data sheet summarizes the features

of the PIC32MX3XX/4XX family of
devices. It is not intended to be a compre-
hensive reference source. Refer to
Section 19. “Comparator” (DS61110) of
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

 in

this data sheet for device-specific register
and bit information.

C1

CV

REF

C1IN+

C1IN+

C1IN-

C1OUT

COUT (CM1CON)

CREF

CCH<1:0>

CPOL

COE

ON

C2IN+

IV

REF

C1OUT (CMSTAT)

C2

CV

REF

C2IN+

C2IN+

C2IN-

C2OUT

COUT (CM2CON)

CREF

CPOL

COE

ON

C1IN+

IV

REF

C2OUT (CMSTAT)

Comparator 2

Comparator 1

CCH<1:0>

On USB variants, when USB is enabled, this pin is controlled by the USB module and therefore 
is not available as a comparator input.

Internally connected.