PIC16F882T-I/PT View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F882T-I/PT

28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

Microchip Technology 

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

VREF-

AVSS VCFG1 = 0

VCFG1 = 1

AVDD

VCFG0 = 0

VREF+

VCFG0 = 1

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

AN8

AN9

AN10

AN11

AN12

AN13

CVREF

FixedRef

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

GO/DONE

ADC

ADON

VSS

CHS<3:0>

10

ADFM

0 = Left Justify

1 = Right Justify

10

ADRESH ADRESL

 2006-2012 Microchip Technology Inc.

DS41291G-page 103

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