PIC24F04KA201 datasheet(157/224 Pages) MICROCHIP

157 / 224 page

Preliminary

DS39937B-page 155

PIC24F04KA201 FAMILY

CMxCON: COMPARATOR x CONTROL REGISTERS

R/W-0

U-0

R/W-0

R-0

CON

COE

CPOL

CLPWR

—

CEVT

COUT

bit 15

bit 8

R/W-0

U-0

R/W-0

U-0

R/W-0

EVPOL1

EVPOL0

—

CREF

—

CCH1

CCH0

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

= Comparator is enabled

= Comparator is disabled

bit 14

COE:

Comparator Output Enable bit

= Comparator output is present on the CxOUT pin

= Comparator output is internal only

bit 13

CPOL:

Comparator Output Polarity Select bit

= Comparator output is inverted

= Comparator output is not inverted

bit 12

CLPWR:

Comparator Low-Power Mode Select bit

= Comparator operates in Low-Power mode

= Comparator does not operate in Low-Power mode

bit 11-10

Unimplemented:

Read as ‘0’

bit 9

CEVT:

Comparator Event bit

= Comparator event defined by EVPOL<1:0> has occurred; subsequent triggers and interrupts are

disabled until the bit is cleared

= Comparator event has not occurred

bit 8

COUT:

Comparator Output bit

When CPOL = 0:

=VIN+ > VIN-

=VIN+ < VIN-

When CPOL = 1:

=VIN+ < VIN-

=VIN+ > VIN-

bit 7-6

EVPOL<1:0>:

Trigger/Event/Interrupt Polarity Select bits

= Trigger/event/interrupt generated on any change of the comparator output (while CEVT = 0)

= Trigger/event/interrupt generated on transition of the comparator output:

If CPOL = 0 (non-inverted polarity):

High-to-low transition only.

If CPOL = 1 (inverted polarity):

Low-to-high transition only.

= Trigger/event/interrupt generated on transition of comparator output:

If CPOL = 0 (non-inverted polarity):

Low-to-high transition only.

If CPOL = 1 (inverted polarity):

High-to-low transition only.

= Trigger/event/interrupt generation is disabled

bit 5

Unimplemented:

Read as ‘0’

bit 4

CREF:

Comparator Reference Select bits (non-inverting input)

= Non-inverting input connects to internal CVREF voltage

= Non-inverting input connects to CxINA pin

bit 3-2

Unimplemented:

Read as ‘0’

bit 1-0

CCH<1:0>:

Comparator Channel Select bits

= Inverting input of comparator connects to VBG/2

= Inverting input of comparator connects to CxINB pin

PIC24F04KA201 Datasheet(PDF) 157 Page - Microchip Technology

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