PIC10F320 datasheet(91/210 Pages) MICROCHIP

91 / 210 page

 2011 Microchip Technology Inc.

Preliminary

DS41585A-page 91

PIC10(L)F320/322

15.0

ANALOG-TO-DIGITAL

CONVERTER (ADC) MODULE

The Analog-to-Digital Converter (ADC) converts an

analog input signal to an 8-bit binary representation of

that signal. This device uses three analog input

channels, 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 an 8-bit binary result via successive

approximation and stores the conversion result into the

ADC result register (ADRES). Figure 15-1 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 15-1:

ADC SIMPLIFIED BLOCK DIAGRAM

FVR

VREF- = Vss

Note 1:

When ADON = 0, all multiplexer inputs are disconnected.

See ADCON register (Register 15-1) for detailed analog channel selection per device.

ADON(1)

GO/DONE

VSS

ADC

000

001

010

111

CHS<2:0>(2)

AN0

AN1

AN2

ADRES

Temp Indicator

110

VREF+ = VDD

011

100

101

Reserved

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