PIC18F258-I/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F258-I/SP

28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module

Microchip Technology 

PIC18FXX8

FIGURE 22-2:

VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE

CVREF

Module

R(1) RA0/AN0

•

Voltage

Reference

Output

Impedance

+

–

•

CVREF Output

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

TABLE 22-1: REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE

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

TRISA

— TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 -111 1111 -111 1111

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

Shaded cells are not used with the comparator voltage reference.

© 2006 Microchip Technology Inc.

DS41159E-page 257

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