PIC16C662-10I/SP Microchip Technology, PIC16C662-10I/SP Datasheet - Page 47

• Manufacturer Part Number: PIC16C662-10I/SP
• Description: 8-Bit EPROM Microcontrollers with Analog Comparators
• Manufacturer: Microchip Technology

7.0
The
comparators. The inputs to the comparators are
multiplexed with pins RA0 through RA4. The on-chip
Voltage Reference (Section 8.0) can also be an input to
the comparators.
FIGURE 7-1:
1996 Microchip Technology Inc.
bit7
bit 7:
bit 6:
bit 5-4: Unimplemented: Read as '0'
bit 3:
bit 2-0: CM2:CM0 : 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 CM2:CM0: = 001 :
Then:
1 = C1 V
0 = C1 V
When CM2:CM0 = 010 :
Then:
1 = C1 V
0 = C1 V
Figure 7-2 shows the comparator modes and CM2:CM0 bit settings.
C1OUT
C2 V
C2 V
R-0
CMCON REGISTER (ADDRESS 1Fh)
module
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
– connects to RA2
– connects to RA1
+ > C2 V
+ < C2 V
+ > C1 V
+ < C1 V
– connects to RA3
– connects to RA0
– connects to RA3
– connects to RA0
U-0
—
contains
This document was created with FrameMaker 4 0 4
IN
IN
IN
IN
–
–
–
–
U-0
—
two
R/W-0
CIS
analog
Preliminary
PIC16C64X & PIC16C66X
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
bit0
R/W-0
CM0
R =Readable bit
W =Writable bit
U =Unimplemented bit, read
as ‘0’
- n =Value at POR reset
DS30559A-page 47