PIC12F609-I/PQTP MICROCHIP [Microchip Technology], PIC12F609-I/PQTP Datasheet - Page 65
PIC12F609-I/PQTP
Manufacturer Part Number
PIC12F609-I/PQTP
Description
8-Pin Flash-Based, 8-Bit CMOS Microcontrollers
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC12F609-IPQTP.pdf
(168 pages)
- Current page: 65 of 168
- Download datasheet (3Mb)
8.11
Each comparator has built-in hysteresis that is user
enabled by setting the CMHYS bit of the CMCON1 reg-
ister. The hysteresis feature can help filter noise and
reduce multiple comparator output transitions when the
output is changing state.
FIGURE 8-7:
© 2006 Microchip Technology Inc.
Note:
(Without Hysteresis)
(With Hysteresis)
Comparator Hysteresis
The black areas of the comparator output represents the uncertainty due to input offsets and response time.
Output
Output
V
V
V
V
H
IN
IN
H
+
-
-
+
COMPARATOR HYSTERESIS
V+
V
V
IN
IN
+
-
PIC12F609/615/12HV609/615
Preliminary
+
–
Figure 8-7 shows the relationship between the analog
input levels and digital output of a comparator with and
without hysteresis. The output of the comparator
changes from a low state to a high state only when the
analog voltage at V
threshold (V
from a high state to a low state only when the analog
voltage at V
threshold (V
H
H
+). The output of the comparator changes
-).
IN
+ falls below the lower hysteresis
Output
IN
+ rises above the upper hysteresis
DS41302A-page 63
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