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NUC200-RA2N Datasheet(Fiches technique) 87 Page - Nuvoton Technology Corporation

Numéro de pièce NUC200-RA2N
Description  ARM® Cortex®-M 32-bit Microcontroller
Télécharger  107 Pages
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Fabricant  NUVOTON [Nuvoton Technology Corporation]
Site Internet  http://www.nuvoton.com
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 87 page
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NUC100/120xxxDN
Aug 31, 2015
Page 87 of 107
Rev 1.01
Analog-to-Digital Converter (ADC)
6.21
6.21.1
Overview
The NuMicro
®
NUC100 series contains one 12-bit successive approximation analog-to-digital
converters (SAR A/D converter) with 8 input channels. The A/D converter supports three
operation modes: single, single-cycle scan and continuous scan mode. The A/D converter can be
started by software, PWM Center-aligned trigger and external STADC pin.
6.21.2
Features
Analog input voltage range: 0~VREF
12-bit resolution and 10-bit accuracy is guaranteed
Up to 8 single-end analog input channels or 4 differential analog input channels
Up to 760 kSPS conversion rate as ADC clock frequency is 16 MHz (chip working at 5V)
Three operating modes
Single mode: A/D conversion is performed one time on a specified channel
Single-cycle scan mode: A/D conversion is performed one cycle on all specified
channels with the sequence from the smallest numbered channel to the largest
numbered channel
Continuous scan mode: A/D converter continuously performs Single-cycle scan mode
until software stops A/D conversion
An A/D conversion can be started by:
Writing 1 to ADST bit through software
PWM Center-aligned trigger
External pin STADC
Conversion results are held in data registers for each channel with valid and overrun
indicators
Conversion result can be compared with specify value and user can select whether to
generate an interrupt when conversion result matches the compare register setting
Channel 7 supports 3 input sources: external analog voltage, internal Band-gap voltage,
and internal temperature sensor output




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