M054ZBN Datasheet, PDF (48/68 Pages) List of Unclassifed Manufacturers – 32-BIT MICROCONTROLLER

NuMicro^™ M052/M054BN Data Sheet
6.11 Analog-to-Digital Converter (ADC)
6.11.1 Overview
NuMicro M051^™ series contain one 12-bit successive approximation analog-to-digital converters
(SAR A/D converter) with 8 input channels. The A/D converter supports four operation modes:
single, burst, single-cycle scan and continuous scan mode. The A/D converters can be started by
software and external STADC/P3.2 pin.
6.11.2 Features
 Analog input voltage range: 0~AV_DD (Max to 5.0V).
 12-bit resolution and 10-bit accuracy is guaranteed.
 Up to 8 single-end analog input channels or 4 differential analog input channels.
 Maximum ADC clock frequency is 16 MHz.
 Up to 760k SPS conversion rate.
 Four 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 lowest numbered channel to the highest numbered
channel.
- Continuous scan mode: A/D converter continuously performs Single-cycle scan mode
until software stops A/D conversion.
- Burst mode: A/D conversion will sample and convert the specified single channel and
sequentially store in FIFO.
 An A/D conversion can be started by
- Software Write 1 to ADST bit
- 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 bandgap voltage, and
internal temperature sensor output.
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Publication Release Date: Mar. 19, 2012
Revision V1.01