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PIC18F2480_09 Datasheet, PDF (271/490 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
PIC18F2480/2580/4480/4580
FIGURE 22-2:
COMPARATOR VOLTAGE REFERENCE OUTPUT BUFFER EXAMPLE
PIC18F4X80
CVREF
Module
R(1)
Voltage
Reference
Output
Impedance
RA0
+
–
CVREF Output
Note 1: R is dependent upon the voltage reference configuration bits, CVRCON<3:0> and CVRCON<5>.
TABLE 22-1: 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(2) CVREN CVROE CVRR CVRSS CVR3
CVR2
CVR1
CVR0
57
CMCON(2) C2OUT C1OUT C2INV C1INV
CIS
CM2
CM1
CM0
57
TRISA
TRISA7(1) TRISA6(1) PORTA Data Direction Register
58
Legend: Shaded cells are not used with the comparator voltage reference.
Note 1: PORTA pins are enabled based on oscillator configuration.
2: These registers are unimplemented on PIC18F2X80 devices.
© 2009 Microchip Technology Inc.
DS39637D-page 271