Microchip Technology AC244045 Data Sheet

 2010-2012 Microchip Technology Inc.

DS41440C-page 179

PIC16(L)F1825/1829

REGISTER 19-1:

CMxCON0: COMPARATOR Cx CONTROL REGISTER 0

R/W-0/0

R-0/0

R/W-0/0

U-0

R/W-1/1

R/W-0/0

CxON

CxOUT

CxOE

CxPOL

—

CxSP

CxHYS

CxSYNC

bit 7

bit 0

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

CxON:

Comparator Enable bit

1 = Comparator is enabled and consumes no active power
0 = Comparator is disabled

bit 6

CxOUT:

Comparator Output bit

If CxPOL = 1 (inverted polarity):
1 = CxVP < CxVN
0 = CxVP > CxVN
If CxPOL = 0 (non-inverted polarity):
1 = CxVP > CxVN
0 = CxVP < CxVN

bit 5

CxOE:

Comparator Output Enable bit

1 = CxOUT is present on the CxOUT pin. Requires that the associated TRIS bit be cleared to actually

drive the pin. Not affected by CxON.

0 = CxOUT is internal only

bit 4

CxPOL:

Comparator Output Polarity Select bit

1 = Comparator output is inverted
0 = Comparator output is not inverted

bit 3

Unimplemented:

Read as ‘0’

bit 2

CxSP:

Comparator Speed/Power Select bit

1 = Comparator operates in normal power, higher speed mode
0 = Comparator operates in low-power, low-speed mode

bit 1

CxHYS:

Comparator Hysteresis Enable bit

1 = Comparator hysteresis enabled
0 = Comparator hysteresis disabled

bit 0

CxSYNC:

Comparator Output Synchronous Mode bit

1 = Comparator output to Timer1 and I/O pin is synchronous to changes on Timer1 clock source.

Output updated on the falling edge of Timer1 clock source.

0 = Comparator output to Timer1 and I/O pin is asynchronous.