ST6215LD1/CCC 查看數據表（PDF） - STMicroelectronics

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ST6215LD1/CCC

8-bit MCUs with A/D converter, two timers, oscillator safeguard & safe reset

STMicroelectronics 

ST6215C ST6225C

9.3 A/D CONVERTER (ADC)

9.3.1 Introduction

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

ripheral is a 8-bit, successive approximation con-

verter. This peripheral has multiplexed analog in-

put channels (refer to device pin out description)

that allow the peripheral to convert the analog volt-

age levels from different sources.

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

Data Register. The A/D converter is controlled

through a Control Register.

Figure 34. ADC Block Diagram

9.3.2 Main Features

■ 8-bit conversion

■ Multiplexed analog input channels

■ Linear successive approximation

■ Data register (DR) which contains the results

■ End of Conversion flag

■ On/Off bit (to reduce consumption)

■ Typical conversion time 70 µs (with an 8 MHz

crystal)

The block diagram is shown in Figure 34.

fINT

DIV 12

fADC

EAI

EOC

STA

PDS

AD OSC AD

CR3 OFF CR1

AD

CR0

ADCR

AIN0

AIN1

AINx

I/O PORT

PORT

MUX

ANALOG TO DIGITAL

CONVERTER

DDRx

ORx

DRx

ADR

ADR7 ADR6 ADR5 ADR4 ADR3 ADR2 ADR1 ADR0

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