Datasheet

 2011-2012 Microchip Technology Inc. DS70652E-page 233
dsPIC33FJ16(GP/MC)101/102 AND dsPIC33FJ32(GP/MC)101/102/104
REGISTER 20-2: CMxCON: COMPARATOR x CONTROL REGISTER
R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 R/W-0 R/W-0
CON COE CPOL
— — — CEVT COUT
bit 15 bit 8
R/W-0 R/W-0 U-0 R/W-0 U-0 U-0 R/W-0 R/W-0
EVPOL<1:0>
—CREF— — CCH<1:0>
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 15 CON: Comparator Enable bit
1 = Comparator is enabled
0 = Comparator is disabled
bit 14 COE: Comparator Output Enable bit
1 = Comparator output is present on the CxOUT pin
0 = Comparator output is internal only
bit 13 CPOL: Comparator Output Polarity Select bit
1 = Comparator output is inverted
0 = Comparator output is not inverted
bit 12-10 Unimplemented: Read as ‘0’
bit 9 CEVT: Comparator Event bit
1 = Comparator event according to EVPOL<1:0> settings occurred; disables future triggers and
interrupts until the bit is cleared
0 = Comparator event did not occur
bit 8 COUT: Comparator Output bit
When CPOL = 0 (non-inverted polarity):
1 = VIN+ > VIN-
0 = V
IN+ < VIN-
When CPOL = 1 (inverted polarity):
1 = VIN+ < VIN-
0 = V
IN+ > VIN-
bit 7-6 EVPOL<1:0>: Trigger/Event/Interrupt Polarity Select bits
11 = Trigger/event/interrupt is generated on any change of the comparator output (while CEVT = 0)
10 = Trigger/event/interrupt is generated only on high-to-low transition of the polarity selected
comparator output (while CEVT = 0)
If CPOL =
1 (inverted polarity):
Low-to-high transition of the comparator output.
If CPOL = 0 (non-inverted polarity):
High-to-low transition of the comparator output.
01 = Trigger/event/interrupt is generated only on low-to-high transition of the polarity-selected
comparator output (while CEVT = 0)
If CPOL =
1 (inverted polarity):
High-to-low transition of the comparator output.
If CPOL =
0 (non-inverted polarity):
Low-to-high transition of the comparator output.
00 = Trigger/event/interrupt generation is disabled
bit 5 Unimplemented: Read as ‘0’