PIC16F684 datasheet(63/192 Pages) MICROCHIP

63 / 192 page

DS41202F-page 61

PIC16F684

CMCON0: COMPARATOR CONFIGURATION REGISTER

R-0

R/W-0

C2OUT

C1OUT

C2INV

C1INV

CIS

CM2

CM1

CM0

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 2 Output bit

When C2INV = 0:

= C2 VIN+ > C2 VIN-

= C2 VIN+ < C2 VIN-

When C2INV = 1:

= C2 VIN+ < C2 VIN-

= C2 VIN+ > C2 VIN-

bit 6

C1OUT: Comparator 1 Output bit

When C1INV = 0:

= C1 VIN+ > C1 VIN-

= C1 VIN+ < C1 VIN-

When C1INV = 1:

= C1 VIN+ < C1 VIN-

= C1 VIN+ > C1 VIN-

bit 5

C2INV: Comparator 2 Output Inversion bit

= C2 output inverted

= C2 output not inverted

bit 4

C1INV: Comparator 1 Output Inversion bit

= C1 Output inverted

= C1 Output not inverted

bit 3

CIS: Comparator Input Switch bit

When CM<2:0> = 010:

= C1IN+ connects to C1 VIN-

C2IN+ connects to C2 VIN-

= C1IN- connects to C1 VIN-

C2IN- connects to C2 VIN-

When CM<2:0> = 001:

= C1IN+ connects to C1 VIN-

= C1IN- connects to C1 VIN-

bit 2-0

CM<2:0>: Comparator Mode bits (See Figure 8-5)

000

= Comparators off. CxIN pins are configured as analog

001

= Three inputs multiplexed to two comparators

010

= Four inputs multiplexed to two comparators

011

= Two common reference comparators

100

= Two independent comparators

101

= One independent comparator

110

= Two common reference comparators with outputs

111

= Comparators off. CxIN pins are configured as digital I/O

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