PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 231

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 21-2:
TABLE 21-1:
 2003 Microchip Technology Inc.
CVRCON CVREN CVROE
CMCON
TRISA
Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’.
Note 1:
Name
Shaded cells are not used with the comparator voltage reference.
These pins are enabled based on oscillator configuration (see Configuration Register 1H).
C2OUT
Note 1: R is dependent upon the voltage reference configuration bits (CVRCON<3:0> and CVRCON<5>).
RA7
Bit 7
(1)
REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE
CV
Module
VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
C1OUT
RA6
REF
Bit 6
(1)
Impedance
Reference
Voltage
Output
C2INV
CVRR
Bit 5
RA5
R
(1)
C1INV
Bit 4
RA4
RA2
—
PIC18F2220/2320/4220/4320
CVR3
Bit 3
RA3
CIS
CVR2
Bit 2
CM2
RA2
+
–
CVR1
Bit 1
CM1
RA1
CVR0
Bit 0
CM0
RA0
CV
REF
000- 0000 000- 0000
0000 0111 0000 0111
1111 1111 1111 1111
Output
Value on
POR
DS39599C-page 229
Value on
all other
Resets