PIC16F724-I/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F724-I/SP

28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC16F72X/PIC16LF72X

9.0 ANALOG-TO-DIGITAL

CONVERTER (ADC) MODULE

The Analog-to-Digital Converter (ADC) allows

conversion of an analog input signal to a 8-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 8-bit binary result via successive

approximation and stores the conversion result into the

ADC result register (ADRES). Figure 9-1 shows the

block diagram of the ADC.

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:

ADC BLOCK DIAGRAM

AVDD

ADREF = 0x

VREF+

ADREF = 11

ADREF = 10

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

AN8

AN9

AN10

AN11

AN12

AN13

Reserved

FVREF

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

GO/DONE

ADC

ADON

VSS

CHS<3:0>

8

ADRES

© 2009 Microchip Technology Inc.

DS41341E-page 99

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