PIC16C620 Microchip Technology, PIC16C620 Datasheet - Page 37

• Manufacturer Part Number: PIC16C620
• Description: EPROM-Based 8-Bit CMOS Microcontroller
• Manufacturer: Microchip Technology

7.0
The
comparators. The inputs to the comparators are
multiplexed with the RA0 through RA3 pins. The
on-chip Voltage Reference (Section 8.0) can also be an
input to the comparators.
FIGURE 7-1:
1998 Microchip Technology Inc.
bit7
bit 7:
bit 6:
bit 5-4: Unimplemented: Read as '0'
bit 3:
bit 2-0: CM<2:0>: Comparator mode
C2OUT
R-0
comparator
COMPARATOR MODULE
C2OUT: Comparator 2 output
1 = C2 V
0 = C2 V
C1OUT: Comparator 1 output
1 = C1 V
0 = C1 V
CIS: Comparator Input Switch
When CM<2:0>: = 001:
1 = C1 V
0 = C1 V
When CM<2:0> = 010:
1 = C1 V
0 = C1 V
Figure 7-2.
C1OUT
C2 V
C2 V
R-0
CMCON REGISTER (ADDRESS 1Fh)
module
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
+ > C2 V
+ < C2 V
+ > C1 V
+ < C1 V
– connects to RA3
– connects to RA0
– connects to RA3
– connects to RA0
– connects to RA2
– connects to RA1
U-0
contains
IN
IN
IN
IN
–
–
–
–
U-0
two
R/W-0
CIS
analog
Preliminary
R/W-0
CM2
R/W-0
The CMCON register, shown in Figure 7-1, controls the
comparator input and output multiplexers. A block
diagram of the comparator is shown in Figure 7-2.
CM1
R/W-0
CM0
bit0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n =Value at POR reset
PIC16C62X
read as ‘0’
DS30235G-page 37