Datasheet

© 2007 Microchip Technology Inc. DS39629C-page 249
PIC18F6390/6490/8390/8490
FIGURE 20-2: VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
TABLE 20-1: REGISTERS ASSOCIATED WITH THE COMPARATOR VOLTAGE REFERENCE
CVREF Output
+
–
CVREF
Module
Voltage
Reference
Output
Impedance
R
(1)
RF5
Note 1: R is dependent upon the voltage reference configuration bits, CVRCON<3:0> and CVRCON<5>.
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 61
CMCON
C2OUT C1OUT C2INV C1INV CIS CM2 CM1 CM0 61
TRISF PORTF Data Direction Register 62
Legend: Shaded cells are not used with the comparator voltage reference.