PIC16F1826-E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1826-E/SO

18/20/28-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

15.0 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 conversion result into the

ADC result registers (ADRESH:ADRESL register pair).

Figure 15-1 shows the block diagram of the ADC.

PIC16F/LF1826/27

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 BLOCK DIAGRAM

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

AN8

AN9

AN10

AN11

DAC

FVR Buffer1

VREF-

ADNREF = 1

ADNREF = 0

VDD VSS

ADPREF = 00

ADPREF = 11

VREF+ ADPREF = 10

00000

00001

00010

00011

00100

00101

00110

00111

01000

01001

01010

01011

11110

11111

CHS<4:0>

GO/DONE

ADC

ADON

VSS

10

ADFM

0 = Left Justify

1 = Right Justify

16

ADRESH ADRESL

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

 2010 Microchip Technology Inc.

Preliminary

DS41391C-page 139

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