PIC10F200T datasheet(39/86 Pages) MICROCHIP

39 / 86 page

Preliminary

DS41239B-page 37

PIC10F200/202/204/206

8.0

COMPARATOR MODULE

The

Comparator

module

contains

one

analog

comparator.

The

inputs

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 (ADDRESS: 07h)

R-1

R/W-1

CMPOUT

COUTEN

POL

CMPT0CS

CMPON

CNREF

CPREF

CWU

bit 7

bit 0

bit 7

CMPOUT: Comparator Output bit

= VIN+ > VIN-

= VIN+ < VIN-

bit 6

COUTEN: Comparator Output Enable bit(1, 2)

= Output of comparator is NOT placed on the COUT pin

= Output of comparator is placed in the COUT pin

bit 5

POL: Comparator Output Polarity bit(2)

= Output of comparator not inverted

= Output of comparator inverted

bit 4

CMPT0CS: Comparator TMR0 Clock Source bit(2)

= TMR0 clock source selected by T0CS control bit

= Comparator output used as TMR0 clock source

bit 3

CMPON: Comparator Enable bit

= Comparator is on

= Comparator is off

bit 2

CNREF: Comparator Negative Reference Select bit(2)

= CIN- pin(3)

= Internal voltage reference

bit 1

CPREF: Comparator Positive Reference Select bit(2)

= CIN+ pin(3)

= CIN- pin(3)

bit 0

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

= Wake-up on comparator change is disabled

= 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.

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

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