PIC10F200 datasheet(39/96 Pages) MICROCHIP

39 / 96 page

DS41239D-page 37

PIC10F200/202/204/206

8.0

COMPARATOR MODULE

The comparator module contains one Analog

comparator. The inputs to the comparator are

multiplexed with GP0 and GP1 pins. The output of the

comparator can be placed on GP2.

The CMCON0 register, shown in Register 8-1, controls

the comparator operation. A block diagram of the

comparator is shown in Figure 8-1.

CMCON0 REGISTER

R-1

R/W-1

CMPOUT

COUTEN

POL

CMPT0CS

CMPON

CNREF

CPREF

CWU

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

CMPOUT: Comparator Output bit

1 = VIN+ > VIN-

0 = VIN+ < VIN-

bit 6

COUTEN: Comparator Output Enable bit(1, 2)

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

0 = Output of comparator is placed in the COUT pin

bit 5

POL: Comparator Output Polarity bit(2)

1 = Output of comparator not inverted

0 = Output of comparator inverted

bit 4

CMPT0CS: Comparator TMR0 Clock Source bit(2)

1 = TMR0 clock source selected by T0CS control bit

0 = Comparator output used as TMR0 clock source

bit 3

CMPON: Comparator Enable bit

1 = Comparator is on

0 = Comparator is off

bit 2

CNREF: Comparator Negative Reference Select bit(2)

1 = CIN- pin(3)

0 = Internal voltage reference

bit 1

CPREF: Comparator Positive Reference Select bit(2)

1 = CIN+ pin(3)

0 = CIN- pin(3)

bit 0

CWU: Comparator Wake-up on Change Enable bit(2)

1 = Wake-up on comparator change is disabled

0 = Wake-up on comparator change is enabled.

Note 1:

Overrides T0CS bit for TRIS control of GP2.

When the comparator is turned on, these control bits assert themselves. When the comparator is off, these

bits have no effect on the device operation and the other control registers have precedence.

PIC10F204/206 only.

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