PIC16F882-I datasheet(101/328 Pages) MICROCHIP

tên linh kiện	PIC16F882-I

Giải thích chi tiết về linh kiện	28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers

PDF	328 Pages

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nhà sản xuất	MICROCHIP [Microchip Technology]

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101 / 328 page

DS41291F-page 99

PIC16F882/883/884/886/887

9.0

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 9-1 shows the block diagram of the ADC.

FIGURE 9-1:

ADC BLOCK DIAGRAM

AN0

AN1

AN2

AN4

AVDD

VREF+

ADON

GO/DONE

VCFG0 = 1

VCFG0 = 0

CHS<3:0>

VSS

AN5

AN6

AN7

AN3

AN8

AN9

AN10

AN11

AN12

AN13

AVSS

VREF-

VCFG1 = 1

VCFG1 = 0

CVREF

FixedRef

0000

0001

0010

0011

0100

0101

0111

0110

1000

1001

1010

1011

1100

1101

1110

1111

ADRESH

ADRESL

ADFM

= Left Justify

= Right Justify

ADC

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