ST72F324J2T6 datasheet(102/156 Pages) STMICROELECTRONICS

Teilenummer	ST72F324J2T6

Bauteilbeschribung	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, 4 TIMERS, SPI, SCI INTERFACE

PDF	156 Pages

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10.6 10-BIT A/D CONVERTER (ADC)

10.6.1 Introduction

The on-chip Analog to Digital Converter (ADC) pe-

ripheral is a 10-bit, successive approximation con-

verter with internal sample and hold circuitry. This

peripheral has up to 16 multiplexed analog input

channels (refer to device pin out description) that

allow the peripheral to convert the analog voltage

levels from up to 16 different sources.

The result of the conversion is stored in a 10-bit

Data Register. The A/D converter is controlled

through a Control/Status Register.

10.6.2 Main Features

10-bit conversion

Up to 16 channels with multiplexed input

Linear successive approximation

Data register (DR) which contains the results

Conversion complete status flag

On/off bit (to reduce consumption)

The block diagram is shown in Figure 57.

Figure 57. ADC Block Diagram

CH2

CH1

EOC SPEED ADON

CH0

ADCCSR

AIN0

AIN1

ANALOG TO DIGITAL

CONVERTER

AINx

ANALOG

MUX

ADCDRH

DIV 4

fADC

fCPU

ADCDRL

0000

CH3

DIV 2

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