PIC12F615 datasheet(60/168 Pages) MICROCHIP

60 / 168 page

PIC12F609/615/12HV609/615

DS41302A-page 58

Preliminary

CMCON0: COMPARATOR CONTROL REGISTER 0

R/W-0

R-0

R/W-0

U-0

R/W-0

U-0

R/W-0

CMON

COUT

CMOE

CMPOL

—

CMR

—

CMCH

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

CMON: Comparator Enable bit

= Comparator is enabled

= Comparator is disabled

bit 6

COUT: Comparator Output bit

If C1POL = 1 (inverted polarity):

COUT = 0 when CMVIN+ > CMVIN-

COUT = 1 when CMVIN+ < CMVIN-

If C1POL = 0 (non-inverted polarity):

COUT = 1 when CMVIN+ > CMVIN-

COUT = 0 when CMVIN+ < CMVIN-

bit 5

CMOE: Comparator Output Enable bit

= COUT is present on the COUT pin(1)

= COUT is internal only

bit 4

CMPOL: Comparator Output Polarity Select bit

= COUT logic is inverted

= COUT logic is not inverted

bit 3

Unimplemented: Read as ‘0’

bit 2

CMR: Comparator Reference Select bit (non-inverting input)

= CMVIN+ connects to CMVREF output

= CMVIN+ connects to CIN+ pin

bit 1

Unimplemented: Read as ‘0’

bit 0

CMCH: Comparator C1 Channel Select bit

= CMVIN- pin of the Comparator connects to CIN0-

= CMVIN- pin of the Comparator connects to CIN1-

Note 1:

Comparator output requires the following three conditions: CMOE = 1, CMON = 1 and corresponding port

TRIS bit = 0.

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