PIC16F720T-E/SS 查看數據表（PDF） - Microchip Technology

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PIC16F720T-E/SS

20-Pin Flash Microcontrollers

Microchip Technology 

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, FVREF, is an internally

generated supply only.

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

PIC16(L)F720/721

VDD

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

AN8

AN9

AN10

AN11

Temperature Indicator

FVREF

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001 GO/DONE

1010

1011

ADON

ADC

VSS

1110

1111

CHS<3:0>

8

ADRES

 2010-2013 Microchip Technology Inc.

DS41430D-page 75

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