PIC16C781 datasheet(95/186 Pages) MICROCHIP

95 / 186 page

 2001 Microchip Technology Inc.

Preliminary

DS41171A-page 93

PIC16C781/782

COMPARATOR C2 CONTROL REGISTER0 (CM2CON0: 11Ah)

R/W-0

R-0

R/W-0

C2ON

C2OUT

C2OE

C2POL

C2SP

C2R

C2CH1

C2CH0

bit 7

bit 0

bit 7

C2ON: Comparator C2 Enable bit

= C2 Comparator is enabled

= C2 Comparator is disabled

bit 6

C2OUT: Comparator C2 Output bit

If C2POL = 1 (inverted polarity):

C2OUT = 1, C2VP < C2VN

C2OUT = 0, C2VP > C2VN

If C2POL = 0 (non-inverted polarity):

C2OUT = 1, C2VP > C2VN

C2OUT = 0, C2VP < C2VN

bit 5

C2OE: Comparator C2 Output Enable bit

= C2OUT is present on RB7/C2/PSMC1B/T1G(1)

= C2OUT is internal only

bit 4

C2POL: Comparator C2 Output Polarity Select bit

= C2OUT logic is inverted

= C2OUT logic is not inverted

bit 3

C2SP: Comparator C2 Speed Select bit

= C2 operates in normal speed mode

= C2 operates in low power, slow speed mode.

bit 2

C2R: Comparator C2 Reference Select bits (non-inverting input)

= C2VP connects to VDAC

= C2VP connects to VREF2

bit 1-0

C2CH<1:0>: Comparator C2 Channel Select bits

= C2VN of C2 connects to AN4

= C2VN of C2 connects to AN5

= C2VN of C2 connects to AN6

= C2VN of C2 connects to AN7

Note 1: C2OUT will only drive RB7/C2/PSMC1B/T1G if:

(C2OE = 1) & (C2ON = 1) & (TRISB<7> = 0) & ((SMCON = 0) or

((SMCOM = 0) & (SCEN = 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

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