PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 255
PIC18F258
Manufacturer Part Number
PIC18F258
Description
High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F258.pdf
(384 pages)
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FIGURE 22-2:
TABLE 22-1:
CVRCON
CMCON
TRISA
Legend: x = unknown, u = unchanged, - = unimplemented, read as "0".
2002 Microchip Technology Inc.
Name
Shaded cells are not used with the comparator voltage reference.
CVREN CVROE
C2OUT C1OUT
Bit 7
Note 1: R is dependent upon the voltage reference configuration CVRCON<3:0> and CVRCON<5>.
—
REGISTERS ASSOCIATED WITH COMPARATOR VOLTAGE REFERENCE
Module
CV
VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
TRISA6 TRISA5 TRISA4 TRISA3 TRISA2 TRISA1 TRISA0 -111 1111 -111 1111
REF
Bit 6
Impedance
Reference
Voltage
Output
CVRR
C2INV
Bit 5
R
(1)
RA0/AN0
CVRSS
C1INV
Bit 4
Preliminary
•
CVR3
Bit 3
CIS
CVR2
Bit 2
CM2
+
–
CVR1
Bit 1
CM1
•
CVR0
Bit 0
CM0
CV
PIC18FXX8
REF
0000 0000 0000 0000
0000 0000 0000 0000
Output
Value on
POR
DS41159B-page 253
Value on
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