PIC18F1230 MICROCHIP [Microchip Technology], PIC18F1230 Datasheet - Page 175

• Manufacturer Part Number: PIC18F1230
• Description: 18/20/28-Pin, Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

16.0
The analog comparator module contains three
comparators. The inputs can be selected from the
analog inputs multiplexed with pins RA0, RB2 and
RB3, as well as the on-chip voltage reference (see
REGISTER 16-1:
© 2006 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4-3
bit 2
bit 1
bit 0
C2OUT
R-0
COMPARATOR MODULE
C2OUT: Comparator 2 Output bit
1 = C2 V
0 = C2 V
C1OUT: Comparator 1 Output bit
1 = C1 V
0 = C1 V
C0OUT: Comparator 0 Output bit
1 = C0 V
0 = C0 V
Unimplemented: Read as ‘0’
CMEN2: Comparator 2 Enable bit
1 = Comparator 2 is enabled
0 = Comparator 2 is disabled
CMEN1: Comparator 1 Enable bit
1 = Comparator 1 is enabled
0 = Comparator 1 is disabled
CMEN0: Comparator 0 Enable bit
1 = Comparator 0 is enabled
0 = Comparator 0 is disabled
C1OUT
R-0
CMCON: COMPARATOR CONTROL REGISTER
IN
IN
IN
IN
IN
IN
+ > C2 V
+ < C2 V
+ > C1 V
+ < C1 V
+ > C0 V
+ < C0 V
W = Writable bit
‘1’ = Bit is set
C0OUT
R-0
IN
IN
IN
IN
IN
IN
- (CV
- (CV
- (CV
- (CV
- (CV
- (CV
REF
REF
REF
REF
REF
REF
Advance Information
)
)
)
)-
)
)
U-0
—
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
Section 17.0
Module”). The digital outputs are not available at the
pin level and can only be read through the control
register, CMCON (Register 16-1). CMCON also selects
the comparator input.
U-0
—
PIC18F1230/1330
CMEN2
R/W-0
“Comparator
x = Bit is unknown
CMEN1
R/W-0
Voltage
DS39758B-page 173
CMEN0
Reference
R/W-0
bit 0