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PIC16F887 Datasheet(PDF) 91 Page - Microchip Technology

Part # PIC16F887
Description  28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F887 Datasheet(HTML) 91 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
Preliminary
DS41291D-page 89
PIC16F882/883/884/886/887
REGISTER 8-2:
CM2CON0: COMPARATOR C2 CONTROL REGISTER 0
R/W-0
R-0
R/W-0
R/W-0
U-0
R/W-0
R/W-0
R/W-0
C2ON
C2OUT
C2OE
C2POL
—
C2R
C2CH1
C2CH0
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
C2ON: Comparator C2 Enable bit
1
= Comparator C2 is enabled
0
= Comparator C2 is disabled
bit 6
C2OUT: Comparator C2 Output bit
If C2POL = 1 (inverted polarity):
C2OUT = 0 when C2VIN+ > C2VIN-
C2OUT = 1 when C2VIN+ < C2VIN-
If C2POL = 0 (non-inverted polarity):
C2OUT = 1 when C2VIN+ > C2VIN-
C2OUT = 0 when C2VIN+ < C2VIN-
bit 5
C2OE: Comparator C2 Output Enable bit
1
= C2OUT is present on C2OUT pin(1)
0
= C2OUT is internal only
bit 4
C2POL: Comparator C2 Output Polarity Select bit
1
= C2OUT logic is inverted
0
= C2OUT logic is not inverted
bit 3
Unimplemented: Read as ‘0’
bit 2
C2R: Comparator C2 Reference Select bits (non-inverting input)
1
= C2VIN+ connects to C2VREF
0
= C2VIN+ connects to C2IN+ pin
bit 1-0
C2CH<1:0>: Comparator C2 Channel Select bits
00
= C12IN0- pin of C2 connects to C2VIN-
01
= C12IN1- pin of C2 connects to C2VIN-
10
= C12IN2- pin of C2 connects to C2VIN-
11
= C12IN3- pin of C2 connects to C2VIN-
Note 1:
Comparator output requires the following three conditions: C2OE = 1, C2ON = 1 and corresponding port
TRIS bit = 0.


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