D301 datasheet(313/416 Pages) MICROCHIP

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DS30010118D-page 313

PIC24FJ256GA705 FAMILY

bit 4

CREF: Comparator Reference Select bits (non-inverting input)

1 = Non-inverting input connects to the internal CVREF voltage

0 = Non-inverting input connects to the CxINA pin

bit 3-2

Unimplemented: Read as ‘0’

bit 1-0

CCH<1:0>: Comparator Channel Select bits

11 = Inverting input of the comparator connects to the internal selectable reference voltage specified

by the CVREFM<1:0> bits in the CVRCON register

10 = Inverting input of the comparator connects to the CxIND pin

01 = Inverting input of the comparator connects to the CxINC pin

00 = Inverting input of the comparator connects to the CxINB pin

CMxCON: COMPARATOR x CONTROL REGISTERS

(COMPARATORS 1 THROUGH 3) (CONTINUED)

CMSTAT: COMPARATOR MODULE STATUS REGISTER

R/W-0

U-0

HSC/R-0

CMIDL

—

C3EVT

C2EVT

C1EVT

bit 15

bit 8

U-0

HSC/R-0

—

C3OUT

C2OUT

C1OUT

bit 7

bit 0

Legend:

HSC = Hardware Settable/Clearable bit

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

CMIDL: Comparator Stop in Idle Mode bit

1 = Discontinues operation of all comparators when device enters Idle mode

0 = Continues operation of all enabled comparators in Idle mode

bit 14-11

Unimplemented: Read as ‘0’

bit 10

C3EVT: Comparator 3 Event Status bit (read-only)

Shows the current event status of Comparator 3 (CM3CON<9>).

bit 9

C2EVT: Comparator 2 Event Status bit (read-only)

Shows the current event status of Comparator 2 (CM2CON<9>).

bit 8

C1EVT: Comparator 1 Event Status bit (read-only)

Shows the current event status of Comparator 1 (CM1CON<9>).

bit 7-3

Unimplemented: Read as ‘0’

bit 2

C3OUT: Comparator 3 Output Status bit (read-only)

Shows the current output of Comparator 3 (CM3CON<8>).

bit 1

C2OUT: Comparator 2 Output Status bit (read-only)

Shows the current output of Comparator 2 (CM2CON<8>).

bit 0

C1OUT: Comparator 1 Output Status bit (read-only)

Shows the current output of Comparator 1 (CM1CON<8>).

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