PIC16F570 datasheet(64/134 Pages) MICROCHIP

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PIC16F527

DS40001652C-page 64

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CM2CON0: COMPARATOR C2 CONTROL REGISTER

TABLE 10-1:

REGISTERS ASSOCIATED WITH COMPARATOR MODULE

R-1

R/W-1

C2OUT

C2OUTEN

C2POL

C2PREF2

C2ON

C2NREF

C2PREF1

C2WU

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 7

C2OUT: Comparator Output bit

1 = VIN+ > VIN-

0 = VIN+ < VIN-

bit 6

C2OUTEN: Comparator Output Enable bit(1)

1 = Output of comparator is NOT placed on the C2OUT pin

0 = Output of comparator is placed in the C2OUT pin

bit 5

C2POL: Comparator Output Polarity bit

1 = Output of comparator not inverted

0 = Output of comparator inverted

bit 4

C2PREF2: Comparator Positive Reference Select bit

1 = C1IN+ pin

0 = C2IN- pin

bit 3

C2ON: Comparator Enable bit

1 = Comparator is on

0 = Comparator is off

bit 2

C2NREF: Comparator Negative Reference Select bit(2)

1 = C2IN- pin

0 = CVREF

bit 1

C2PREF1: Comparator Positive Reference Select bit(2)

1 = C2IN+ pin

0 = C2PREF2 controls analog input selection

bit 0

C2WU: Comparator Wake-up on Change Enable bit(3)

1 = Wake-up on Comparator change is disabled

0 = Wake-up on Comparator change is enabled.

Note 1: Overrides TRIS control of the port.

2: When this bit selects an I/O pin and the comparator is turned on, this feature will override the TRIS and

ANSEL settings to make the respective pin an analog input. The value in the ANSEL register, however, is

not overwritten. When the comparator is turned off, the respective pin will revert back to the original TRIS

and ANSEL settings.

3: The C2WU bit must be set to enable the CWIF function. See the INTCON0 register (see Register 8-2) for

more information.

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

on page

STATUS

—

PA0

ZDC

CM1CON0

C1OUT

C1OUTEN C1POL

C1T0CS

C1ON

C1NREF C1PREF

C1WU

CM2CON0

C2OUT

C2OUTEN C2POL

C2PREF2

C2ON

C2NREF C2PREF1 C2WU

TRIS

I/O Control Register (TRISA, TRISB, TRISC)

—

Legend: x = Unknown, u = Unchanged, – = Unimplemented, read as ‘0’, q = Depends on condition.

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