
1999 Microchip Technology Inc.
DS40182C-page 41
PIC16CE62X
8.0
COMPARATOR MODULE
The
comparator
module
contains
two
analog
comparators. The inputs to the comparators are
multiplexed with the RA0 through RA3 pins. The
input to the comparators.
the comparator input and output multiplexers. A block
REGISTER 8-1:
CMCON REGISTER (ADDRESS 1Fh)
R-0
U-0
R/W-0
C2OUT
C1OUT
—
CIS
CM2
CM1
CM0
R
= Readable bit
W = Writable bit
U
= Unimplemented bit,
read as ‘0’
- n = Value at POR reset
bit7
bit0
bit 7:
C2OUT: Comparator 2 output
1
= C2 VIN+ > C2 VIN–
0
= C2 VIN+ < C2 VIN–
bit 6:
C1OUT: Comparator 1 output
1
= C1 VIN+ > C1 VIN–
0
= C1 VIN+ < C1 VIN–
bit 5-4:
Unimplemented: Read as '0'
bit 3:
CIS: Comparator Input Switch
When CM<2:0>: = 001:
1
= C1 VIN– connects to RA3
0
= C1 VIN– connects to RA0
When CM<2:0> = 010:
1
= C1 VIN– connects to RA3
C2 VIN– connects to RA2
0
= C1 VIN– connects to RA0
C2 VIN– connects to RA1
bit 2-0:
CM<2:0>: Comparator mode