Datasheet

PIC18F2455/2550/4455/4550

FIGURE 23-2: COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE

TABLE 23-1: REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE

CVREF Output

–

CVREF

Module

Voltage

Reference

Output

Impedance

(1)

RA2

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

PIC18FXXXX

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

C2OUT C1OUT C2INV C1INV CIS CM2 CM1 CM0 55

TRISA — 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’.