M0518 Datasheet, PDF (52/72 Pages) List of Unclassifed Manufacturers – 36/68 Kbytes flash, 8K bytes SRAM

NuMicro M0518 Series Datasheet
6.14 Analog-to-Digital Converter (ADC)
6.14.1 Overview
The NuMicro M0518 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, BPWM trigger and external STADC pin.
6.14.2 Features
 Analog input voltage range: 0~V_REF
 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 1 MSPS conversion rate (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 (ADCR[11])through software
- PWM and BPWM trigger
- External pin STADC
 Conversion results are held in data registers for each channel with valid and overrun
indicators
 Supports two set digital comparators. The 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 2 input sources: external analog voltage, and internal Band-gap
voltage
Feb 08, 2017
Page 52 of 72
Revision 1.01