ST72E632K2B0 查看數據表（PDF） - STMicroelectronics

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ST72E632K2B0

LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C

STMicroelectronics 

ST7263

5.8 8-BIT A/D CONVERTER (ADC)

5.8.1 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.

5.8.2 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 42.

Figure 42. 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

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