APFCON datasheet(123/222 Pages) MICROCHIP

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DS22331A-page 123

MCP19111

22.0

ANALOG-TO-DIGITAL

CONVERTER (ADC) MODULE

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 right justified conversion

result into the ADC result registers (ADRESH:ADRESL

the ADC.

The internal band gap supplies the voltage reference to

the ADC.

The ADC can generate an interrupt upon completion of

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

device from Sleep.

FIGURE 22-1:

ADC BLOCK DIAGRAM

Note 1: When ADON = 0, all multiplexer inputs are disconnected.

2: See ADCON0 register (Register 22-1) for detailed analog channel selection per device.

00000

00001

00010

00011

00100

00101

00111

00110

01000

01001

01010

01011

RELEFF

ADC

VOUT

VREF

ADON

GO/DONE

CHS4:CHS0

ADRESH

ADRESL

VSS

TEMP_ANA

GPA0

VIN_ANA

CRT

GPB4

VZC

VREF

OVREF

UVREF

VBGR

ANA_IN

DEMAND

GPB2

DCI

01100

GPA1

GPA3

GPA2

GPB1

GPB5

10000

10001

10010

10011

10100

10101

10110

10111

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