PIC18F2455T-I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F2455T-I/ML

28/40/44-Pin, High-Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC18F2455/2550/4455/4550

FIGURE 23-2:

COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE

PIC18FXXXX

CVREF

Module

R(1)

Voltage

Reference

Output

Impedance

RA2

+

–

CVREF Output

Note 1: R is dependent upon the voltage reference configuration bits, CVRCON<5> and CVRCON<3:0>.

TABLE 23-1: REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reset

Values

on page

CVRCON CVREN CVROE CVRR CVRSS CVR3 CVR2 CVR1 CVR0

55

CMCON

TRISA

C2OUT C1OUT C2INV C1INV

CIS

CM2

CM1

CM0

55

—

TRISA6(1) TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0

56

Legend: Shaded cells are not used with the comparator voltage reference.

Note 1: PORTA<6> and its direction and latch bits are individually configured as port pins based on various

oscillator modes. When disabled, these bits read as ‘0’.

© 2009 Microchip Technology Inc.

DS39632E-page 283

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