RFPIC12F675H Microchip Technology Inc., RFPIC12F675H Datasheet - Page 36
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RFPIC12F675H
Manufacturer Part Number
RFPIC12F675H
Description
20-pin Flash-based 8-bit Cmos Microcontroller With Uhf Ask/fsk Transmitter
Manufacturer
Microchip Technology Inc.
Datasheet
1.RFPIC12F675H.pdf
(136 pages)
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rfPIC12F675
6.1
A single comparator is shown in Figure 6-1, along with
the relationship between the analog input levels and
the digital output. When the analog input at V
than the analog input V
is a digital low level. When the analog input at V
greater than the analog input V
comparator is a digital high level. The shaded areas of
the output of the comparator in Figure 6-1 represent
the uncertainty due to input offsets and response time.
The polarity of the comparator output can be inverted
by setting the CINV bit (CMCON<4>). Clearing CINV
results in a non-inverted output. A complete table
showing the output state versus input conditions and
the polarity bit is shown in Table 6-1.
DS70091A-page 34
Note:
Comparator Operation
To use CIN+ and CIN- pins as analog
inputs, the appropriate bits must be
programmed in the CMCON (19h) register.
IN
-, the output of the comparator
IN
-, the output of the
IN
+ is less
IN
Preliminary
+ is
TABLE 6-1:
FIGURE 6-1:
Output
V
V
Note:
IN
IN
Input Conditions
-
+
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
-
+
- > V
- < V
- > V
- < V
CINV bit (CMCON<4>) is clear.
IN
IN
IN
IN
+
+
+
+
OUTPUT STATE VS. INPUT
CONDITIONS
+
–
SINGLE COMPARATOR
2003 Microchip Technology Inc.
CINV
0
0
1
1
Output
COUT
0
1
1
0
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