PIC16LCR620A-20E/SS View Datasheet(PDF) - Microchip Technology
Part Name
Description
MFG CO.
'PIC16LCR620A-20E/SS' PDF : 128 Pages View PDF
PIC16C62X
7.0 COMPARATOR MODULE
The comparator module contains two analog
comparators. The inputs to the comparators are
multiplexed with the RA0 through RA3 pins. The On-
Chip Voltage Reference (Section 8.0) can also be an
input to the comparators.
The CMCON register, shown in Register 7-1, controls
the comparator input and output multiplexers. A block
diagram of the comparator is shown in Figure 7-1.
REGISTER 7-1:
CMCON REGISTER (ADDRESS 1Fh)
R-0
R-0
U-0
U-0
C2OUT C1OUT
—
—
bit 7
R/W-0
CIS
R/W-0
CM2
R/W-0
CM1
R/W-0
CM0
bit 0
bit 7
bit 6
bit 5-4
bit 3
bit 2-0
C2OUT: Comparator 2 output
1 = C2 VIN+ > C2 VIN-
0 = C2 VIN+ < C2 VIN-
C1OUT: Comparator 1 output
1 = C1 VIN+ > C1 VIN-
0 = C1 VIN+ < C1 VIN-
Unimplemented: Read as ‘0’
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
CM<2:0>: Comparator mode.
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
’1’ = Bit is set
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared x = Bit is unknown
2003 Microchip Technology Inc.
DS30235J-page 37
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