Datasheet

 2003-2013 Microchip Technology Inc. DS39609C-page 231

PIC18F6520/8520/6620/8620/6720/8720

FIGURE 21-2: VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE

TABLE 21-1: REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE

CVREF Output

–

CVREF

Module

Voltage

Reference

Output

Impedance

(1)

RF5

Note 1: R is dependent upon the Comparator Voltage Reference Configuration bits CVRCON<3:0> and CVRCON<5>.

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

Value on

POR

Value on

all other

Resets

CVRCON CVREN CVROE CVRR CVRSS CVR3 CVR2 CVR1 CVR0 0000 0000 0000 0000

CMCON C2OUT C1OUT C2INV C1INV CIS CM2 CM1 CM0 0000 0000 0000 0000

TRISF TRISF7 TRISF6 TRISF5 TRISF4 TRISF3 TRISF2 TRISF1 TRISF0 1111 1111 1111 1111

Legend: x = unknown, u = unchanged, – = unimplemented, read as ‘0’.

Shaded cells are not used with the comparator voltage reference.