PIC16F1936T-E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1936T-E/SO

28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP™ Technology

Microchip Technology 

12.0 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.

Comparators are very useful mixed signal building

blocks because they provide analog functionality

independent of 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

12.1 Comparator Overview

A single comparator is shown in Figure 12-1 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.

PIC16F193X/LF193X

FIGURE 12-1:

SINGLE COMPARATOR

VIN+

+

VIN-

–

Output

VIN-

VIN+

Output

Note:

The black areas of the output of the

comparator represents the uncertainty

due to input offsets and response time.

© 2009 Microchip Technology Inc.

Preliminary

DS41364B-page 143

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