PIC24F04KA201 datasheet(155/224 Pages) MICROCHIP

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Preliminary

DS39937B-page 153

PIC24F04KA201 FAMILY

20.0

COMPARATOR MODULE

The comparator module provides two 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 reference divided by 2 (VBG/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

Figure 20-1. Diagrams of the possible individual

comparator

configurations

are

displayed

Figure 20-2.

Each comparator has its own control register,

CMxCON (Register 20-1), for enabling and configuring

its operation. The output and event status of all three

comparators is provided in the CMSTAT register

(Register 20-2).

FIGURE 20-1:

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 on the

Comparator module, refer to the “PIC24F

Family Reference Manual”

, Section 19.

“Comparator Module”

(DS39710).

VIN-

VIN+

CXINB

CXINA

CVREF

VBG/2

VIN-

VIN+

COE

C1OUT

CPOL

Trigger/Interrupt

Logic

CEVT

EVPOL<1:0>

COUT

Input

Select

Logic

CCH<1:0>

CREF

COE

C2OUT

CPOL

Trigger/Interrupt

Logic

CEVT

EVPOL<1:0>

COUT

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