MLX90363-应用.pdf

Application Note

MLX90363 Getting Started Guide

Rev 002 Page 1 of 28 Dec-13

Abstract

This guide was written with the goal of describing the basic setup and

troubleshooting steps required for integrating the MLX90363 Triaxis™

device into either a rotary, linear, or joystick application.

MLX90363 demo board and mbed board or PTC-04 with SPI daughterboard

Values in hexadecimal are shown with a preceding “0x”. For example: 0x12 is decimal 18.

Binary values are shown with a preceding “0b”. For example: 0b10010 is decimal 18.

Textual descriptions are shown in this format

Code examples are shown in this format

Warnings and cautions are shown in this format

Acronyms

MLX90363 Getting Started Guide

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Applicable Applications .................................................................................................................................... 1

Recommended Tools and Resources ............................................................................................................... 1

Convention, Acronyms, and Abbreviations ...................................................................................................... 1

NOP ............................................................................................................................................................... 7

GET1.............................................................................................................................................................. 8

Rotary Application ............................................................................................................................................ 9

Magnetic Configuration ................................................................................................................................ 9

Suggested EEPROM Configuration ............................................................................................................... 9

Linear Application ........................................................................................................................................... 12

Magnetic Configuration .............................................................................................................................. 12

FAQ’s and Troubleshooting ............................................................................................................................ 26

MLX90363 Getting Started Guide

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Axis Definition

The axes of the MLX90363 are defined in the datasheet and are shown below.

SPI Message Notation

The SPI message format used in this document is shown below. The row numbers indicate the word

MLX90363 Getting Started Guide

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The code samples given in this document are written for an mbed microcontroller development board,

specifically the LPC11U24 evaluation board, using a single die MLX90363 (P/N MLX90363EDC-ABB-000).

hardware block diagram for this setup is shown below for a single die connection.

surround the MLX90363. This typically requires a capacitor on the V

MLX90363 Getting Started Guide

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Data output is performed via the mbed serial port. It is necessary to install a serial driver after which point

any terminal program can be used to monitor the serial data stream. The image below shows the output

from the rotary and linear applications in a PuTTY window. PuTTY is a free terminal program that can be

used to monitor the serial port data. The code examples use a baud rate of 115200 and the COM port will

vary depending on which USB port is used.