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PIC18F23K22-E/ML Datasheet(PDF) 305 Page - Microchip Technology

No. de pieza PIC18F23K22-E/ML
Descripción Electrónicos  28/40/44-Pin, Low-Power, High-Performance Microcontrollers with nanoWatt XLP Technology
PDF  496 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F23K22-E/ML Datasheet(HTML) 305 Page - Microchip Technology

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 2010 Microchip Technology Inc.
Preliminary
DS41412C-page 305
PIC18(L)F2X/4XK22
18.0 COMPARATOR MODULE
Comparators are used to interface analog circuits to a
digital circuit by comparing two analog voltages and
providing a digital indication of their relative magnitudes.
The comparators are very useful mixed signal building
blocks because they provide analog functionality
independent of the program execution. The analog
comparator module includes the following features:
• Independent comparator control
• Programmable input selection
• Comparator output is available internally/externally
• Programmable output polarity
• Interrupt-on-change
• Wake-up from Sleep
• Programmable Speed/Power optimization
•PWM shutdown
• Programmable and fixed voltage reference
• Selectable Hysteresis
18.1
Comparator Overview
A single comparator is shown in Figure 18-1 along with
the relationship between the analog input levels and
the digital output. When the analog voltage at VIN+ is
less than the analog voltage at VIN-, the output of the
comparator is a digital low level. When the analog
voltage at VIN+ is greater than the analog voltage at
VIN-, the output of the comparator is a digital high level.
FIGURE 18-1:
SINGLE COMPARATOR
–
+
VIN+
VIN-
Output
Output
VIN+
VIN-
Note:
The black areas of the output of the
comparator represents the uncertainty
due to input offsets and response time.



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