Datasheet

 2009-2011 Microchip Technology Inc. DS39957D-page 399
PIC18F87K90 FAMILY
FIGURE 25-2: COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
TABLE 25-1: REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset
Values on
Page:
CVRCON CVREN CVROE CVRSS CVR4 CVR3 CVR2 CVR1 CVR0 77
CM1CON CON COE CPOL EVPOL1 EVPOL0 CREF CCH1 CCH0 80
CM2CON CON COE CPOL EVPOL1 EVPOL0 CREF CCH1 CCH0 81
CM3CON CON COE CPOL EVPOL1 EVPOL0 CREF CCH1 CCH0 81
TRISF
TRISF7 TRISF6 TRISF5 TRISF4 TRISF3 TRISF2 TRISF1 — 78
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used with the comparator voltage reference.
CVREF Output
+
–
CVREF
Module
Voltage
Reference
Output
Impedance
R
(1)
RF5
PIC18F87K90
Note 1: R is dependent upon the Voltage Reference Configuration bits, CVRCON<3:0> and CVRCON<5>.