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M052LDN Datasheet, PDF (51/86 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller | |||
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M051 DN/DE
6.14 Analog-to-Digital Converter (ADC)
6.14.1 Overview
The NuMicro® M05xxDN/DE contains one 12-bit successive approximation analog-to-digital
converter (SAR A/D converter) with eight input channels. The A/D converter supports four
operation modes: Single, Burst, Single-cycle Scan and Continuous Scan mode. The A/D
converter can be started by software, external pin (STADC/P3.2) or PWM trigger.
6.14.2 Features
ï¬ Analog input voltage range: 0 ~ AVDD
ï¬ 12-bit resolution and 10-bit accuracy is guaranteed
ï¬ Up to eight single-end analog input channels or 4 differential analog input channels
ï¬ Maximum ADC peripheral clock frequency is 16 MHz
ï¬ Up to 760 kSPS sample rate
ï¬ Four operation modes:
ïµ Single mode: A/D conversion is performed one time on a specified channel.
ïµ Burst mode: A/D converter samples and converts the specified single channel and
sequentially stores the result in FIFO.
ïµ Single-cycle Scan mode: A/D conversion is performed only one cycle on all specified
channels with the sequence from the smallest numbered channel to the largest
numbered channel.
ïµ Continuous Scan mode: A/D converter continuously performs Single-cycle Scan mode
until software stops A/D conversion.
ï¬ An A/D conversion can be started by:
ïµ Software Write 1 to ADST bit
ïµ External pin (STADC)
ïµ PWM trigger with optional start delay period
ï¬ Each conversion result is held in data register of each channel with valid and overrun
indicators.
ï¬ Conversion result can be compared with specified value and user can select whether to
generate an interrupt when conversion result matches the compare register setting.
ï¬ Channel 7 supports 3 input sources: external analog voltage, internal band-gap voltage and
ï¬ Internal temperature sensor output.
Oct. 05, 2015
Page 51 of 86
Rev 1.03
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