ST72331N4 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72331N4

8-BIT MCU WITH 8 TO 16K OTP/EPROM, 256 EEPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS

STMicroelectronics 

Prev 81 82 83 84 85 86 87 88 89 90 Next

ST72E331 ST72T331

5.7 8-BIT A/D CONVERTER (ADC)

5.7.1 Introduction

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

ripheral is a 8-bit, successive approximation con-

verter with internal sample and hold circuitry. This

peripheral has up to 8 multiplexed analog input

channels (refer to device pin out description) that

allow the peripheral to convert the analog voltage

levels from up to 8 different sources.

The result of the conversion is stored in a 8-bit

Data Register. The A/D converter is controlled

through a Control/Status Register.

5.7.2 Main Features

s 8-bit conversion

s Up to 8 channels with multiplexed input

s Linear successive approximation

s Data register (DR) which contains the results

s Conversion complete status flag

s On/Off bit (to reduce consumption)

The block diagram is shown in Figure 1.

Figure 46. ADC Block Diagram

AIN0

AIN1

AIN2

AIN3

AIN4

AIN5

AIN6

AIN7

ANALOG

MUX

COCO - ADON 0

- CH2 CH1 CH0

(Control Status Register) CSR

SAMPLE

&

HOLD

ANALOG TO

DIGITAL

CONVERTER

fCPU

AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0

(Data Register) DR

83/107

83

Share Link: