PIC16F610-ESLASHML datasheet(73/214 Pages) MICROCHIP

73 / 214 page

DS41288F-page 73

PIC16F610/616/16HV610/616

9.0

ANALOG-TO-DIGITAL

CONVERTER (ADC) MODULE

(PIC16F616/16HV616 ONLY)

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

either VDD 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 9-1 shows the block diagram of the ADC.

FIGURE 9-1:

ADC BLOCK DIAGRAM

Note:

The ADRESL and ADRESH registers are

read-only.

ADC

VDD

VREF

ADON

GO/DONE

VCFG = 1

VCFG = 0

CHS <3:0>

VSS

RA0/AN0

RA1/AN1/VREF

RA2/AN2

RA4/AN3

RC0/AN4

RC1/AN5

RC2/AN6

RC3/AN7

CVREF

0.6V Reference

1.2V Reference

ADRESH

ADRESL

ADFM

= Left Justify

= Right Justify

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