PIC16F627-04 Microchip Technology, PIC16F627-04 Datasheet - Page 57

• Manufacturer Part Number: PIC16F627-04
• Description: FLASH-Based 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

9.0
The
comparators. The inputs to the comparators are
multiplexed with the RA0 through RA3 pins. The
on-chip Voltage Reference (Section 11.0) can also be
an input to the comparators.
REGISTER 9-1:
1999 Microchip Technology Inc.
R-0
C2OUT C1OUT C2INV
bit7
bit 7:
bit 6:
bit 5:
bit 4:
bit 3:
bit 2-0: CM2:CM0: Comparator mode
comparator
COMPARATOR MODULE
C2OUT: Comparator 2 output
When C2INV=0;
1 = C2 V
0 = C2 V
When C2INV=1;
0 = C2 V
1 = C2 V
C1OUT: Comparator 1 output
When C1INV=0;
1 = C1 V
0 = C1 V
When C1INV=1;
0 = C1 V
1 = C1 V
C2INV: Comparator 2 output inversion
1 = C2 Output inverted
0 = C2 Output not inverted
C1INV: Comparator 1 output inversion
1 = C1 Output inverted
0 = C1 Output not inverted
CIS: Comparator Input Switch
When CM2:CM0: = 001:
Then:
1 = C1 V
0 = C1 V
When CM2:CM0 = 010:
Then:
1 = C1 V
0 = C1 V
Figure 9-1 shows the comparator modes and CM2:CM0 bit settings.
R-0
C2 V
C2 V
module
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
CMCON REGISTER (ADDRESS 01Fh)
– connects to RA2
– connects to RA1
+ > C2 V
+ < C2 V
+ > C2 V
+ < C2 V
+ > C1 V
+ < C1 V
+ > C1 V
+ < C1 V
– connects to RA3
– connects to RA0
– connects to RA3
– connects to RA0
R/W-0
contains
IN
IN
IN
IN
IN
IN
IN
IN
R/W-0
C1INV
–
–
–
–
–
–
–
–
two
R/W-0
CIS
analog
Preliminary
R/W-0
CM2
R/W-0
CM1
The CMCON register, shown in Register 9-1, controls
the comparator input and output multiplexers. A block
diagram of the comparator is shown in Figure 9-1.
R/W-0
CM0
bit0
R = Readable bit
W = Writable bit
U = Unimplemented bit, read
-n = Value at POR reset
as ’0’
PIC16F62X
DS40300B-page 57