PIC16F946-ESLASHMLQTP datasheet(177/330 Pages) MICROCHIP

부품명	PIC16F946-E/MLQTP

상세설명	28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PDF	330 Pages

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제조업체	MICROCHIP [Microchip Technology]

홈페이지	http://www.microchip.com

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177 / 330 page

DS41250F-page 175

PIC16F913/914/916/917/946

12.0 ANALOG-TO-DIGITAL

CONVERTER (ADC) MODULE

The

Analog-to-Digital

Converter

(ADC)

allows

conversion of an analog input signal to a 10-bit binary

representation of that signal. This device uses analog

inputs, which are multiplexed into a single sample and

hold circuit. The output of the sample and hold is

connected to the input of the converter. The converter

generates a 10-bit binary result via successive

approximation and stores the conversion result into the

ADC result registers (ADRESL and ADRESH).

The ADC voltage reference is software selectable to be

either internally generated or externally supplied.

The ADC can generate an interrupt upon completion of

a conversion. This interrupt can be used to wake-up the

device from Sleep.

Figure 12-1 shows the block diagram of the ADC.

FIGURE 12-1:

ADC BLOCK DIAGRAM

RA0/AN0

RA1/AN1

RA2/AN2

RA5/AN4

VDD

VREF+

ADON

GO/DONE

VCFG0 = 1

VCFG0 = 0

CHS

VSS

RE0/AN5(1)

RE1/AN6(1)

RE2/AN7(1)

RA3/AN3

VCFG1 = 1

VCFG1 = 0

VREF-

Note 1:

These channels are only available on PIC16F914/917 and PIC16F946 devices.

ADRESH ADRESL

ADFM

= Left Justify

= Right Justify

000

001

010

011

100

101

110

111

ADC

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