參數(shù)資料
型號: ST72T141K2MARE
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34
封裝: 0.300 INCH, LEAD FREE, PLASTIC, SOP-34
文件頁數(shù): 11/131頁
文件大?。?/td> 3096K
代理商: ST72T141K2MARE
ST72141K2-Auto
108/131
8.5 8-BIT A/D CONVERTER (ADC)
8.5.1 Introduction
The on-chip Analog to Digital Converter (ADC) pe-
ripheral is an 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 pinout 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 an 8-bit
Data Register. The A/D converter is controlled
through a Control/Status Register.
8.5.2 Main Features
8-bit conversion
Up to 8 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 61.
Figure 61. ADC Block Diagram
SAMPLE
ANALOG
MUX
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
(Control Status Register) CSR
(Data Register) DR
&
HOLD
fCPU
ANALOG TO
DIGITAL
CONVERTER
COCO
0
CH0
CH1
CH2
-
-ADON
AD7
AD4
AD0
AD1
AD2
AD3
AD6
AD5
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