PIC18F87K90 Datasheet, PDF (397/566 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC18F87K90 FAMILY
FIGURE 25-2:
COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
PIC18F87K90
CVREF
Module
R⁽¹⁾
Voltage RF5
Reference
Output
Impedance
+
–
CVREF Output
Note 1: R is dependent upon the Voltage Reference Configuration bits, CVRCON<3:0> and CVRCON<5>.
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
75
CM1CON
CON
COE
CPOL EVPOL1 EVPOL0 CREF
CCH1
CCH0
78
CM2CON
CON
COE
CPOL EVPOL1 EVPOL0 CREF
CCH1
CCH0
79
CM3CON
CON
COE
CPOL EVPOL1 EVPOL0 CREF
CCH1
CCH0
79
TRISF
TRISF7 TRISF6 TRISF5 TRISF4 TRISF3 TRISF2 TRISF1
—
76
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used with the comparator voltage reference.
 2010 Microchip Technology Inc.
Preliminary
DS39957B-page 397