Datasheet

PIC16F716

7.0 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).

The ADC voltage reference is software selectable to

either V

DD or a voltage applied to the external reference

pins.

The ADC can generate an interrupt upon completion of

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

device from Sleep.

Figure 7-1 shows the block diagram of the ADC.

FIGURE 7-1: ADC BLOCK DIAGRAM

RA0/AN0

RA1/AN1

RA2/AN2

VDD

VREF

ADON

GO/DONE

CHS

ADRES

RA3/VREF/AN3

000

001

010

011

PFCG<2:0>

(ADCON1 register)

ADC