Datasheet

PIC18F2682/2685/4682/4685

FIGURE 21-2: COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE

TABLE 21-1: REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE

CVREF Output

–

CVREF

Module

Voltage

Reference

Output

Impedance

(1)

RA0

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

PIC18F4682/4685

Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Reset

Values

on page

CVRCON

(2)

CVREN CVROE CVRR CVRSS CVR3 CVR2 CVR1 CVR0 53

CMCON

(2)

C2OUT C1OUT C2INV C1INV CIS CM2 CM1 CM0 53

TRISA TRISA7

(1)

TRISA6

(1)

PORTA Data Direction Register 54

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

Note 1: PORTA pins are enabled based on oscillator configuration.

2: These registers are unimplemented on PIC18F2682/2685 devices.