PIC18F87K22 Datasheet, PDF (375/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

PIC18F87K22 FAMILY
FIGURE 25-2:
COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
PIC18F87K22
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
CVRCON
CVREN CVROE CVRSS CVR4
CVR3
CVR2
CVR1
CVR0
CM1CON
CON
COE
CPOL EVPOL1 EVPOL0 CREF
CCH1
CCH0
CM2CON
CON
COE
CPOL EVPOL1 EVPOL0 CREF
CCH1
CCH0
CM3CON
CON
COE
CPOL EVPOL1 EVPOL0 CREF
CCH1
CCH0
TRISF
TRISF7 TRISF6 TRISF5 TRISF4 TRISF3 TRISF2 TRISF1
—
TRISA
TRISA7 TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0
ANCON0
ANSEL7 ANSEL6 ANSEL5 ANSEL4 ANSEL3 ANSEL2 ANSEL1 ANSEL0
ANCON1
ANSEL15 ANSEL14 ANSEL13 ANSEL12 ANSEL11 ANSEL10 ANSEL9 ANSEL8
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used with the comparator voltage reference.
 2010 Microchip Technology Inc.
Preliminary
DS39960B-page 375