austriamicrosystems AS5040 Operation Manual

Demoboard

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AS5040 / AS5140 Demoboard
OPERATION MANUAL

1 General Overview

The AS5X40 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°.
It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single
device.
To measure the angle, only a simple two-pole magnet, rotating over the center of the chip, is required. The magnet may
be placed above or below the IC.
The absolute angle measurement provides instant indication of the magnet's angular position with a resolution of 0.35°
= 1024 positions per revolution (AS5X40). This digital data is available as a serial bit stream and as a PWM signal.
Furthermore, a user-programmable incremental output is available, making the chip suitable for replacement of various
optical encoders.
An internal voltage regulator allows the AS5X40 to operate at either 3.3 V or 5 V supplies.

2 The AS5X40 Demoboard

The AS5X40 demoboard is a complete rotary encoder system with built-in microcontroller, USB interface, graphical
LCD display, incremental indicators, commutation indicators and PWM output LED.
The board is USB powered or externally supplied with a 9V battery for standalone operation.
Knob with D5x2.5mm
diametral magnet,
2mm over the AS5X40
J6: External Encoder
SSI Connector
Quadrature A/B
and Index output signal
External (left) – Onboard
(right) encoder selection

3 Operating the AS5X40 Demoboard

The AS5X40 demoboard can be used in several ways:
As standalone unit supplied by a 9V battery
Connect a 9V battery to the battery connector on the top right side of the board. No other connections are required.
As standalone unit supplied by an USB port
Connect the demoboard to a PC using a USB/USB cable (included in demoboard shipment). The board is supplied by
the 5V supply of the USB port. No other connections are required.
As input device for the AS5000 Programmer GUI software
This configuration uses the same USB hardware connection as above, but additionally the AS5000 Programmer GUI
software is running. The LCD display will be turned off and the Angle/Multiturn/AGC will be displayed on the PC screen.
Some extra features as pole pair, zero position or AGC programming can be achieved. The parameters will not be
permanently programmed. All the parameters will be lost when the demoboard is shut down. For a permanent device
programming, the "AS5000 Programmer" hardware should be used.
Revision 1.0, 29.January 2009
LCD display (for standalone mode)
Onboard AS5x40 output signals connector and indicators:
switch SW1
Figure 1: AS5X40 Demoboard hardware with mounted magnet knob
www.austriamicrosystems.com
Application note
9V battery connector
(standalone only)
SiLabs C8051F320
microcontroller
USB cable to the PC
Page 1 of 12

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Summary of Contents for austriamicrosystems AS5040

  • Page 1: General Overview

    AS5040 / AS5140 Demoboard OPERATION MANUAL Application note 1 General Overview The AS5X40 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.
  • Page 2: Hardware Indicators And Connectors

    (MagINCn = 0 and MagDECn = 0), the magnet is out of range, the airgap between the encoder and the magnet is too high or too low. In that case, “Magnet out of range” will be displayed on the LCD display. Revision 1.0, 29-Jan-2009 www.austriamicrosystems.com Page 2 of 12...
  • Page 3: Encoder Selection Switch

    GND) of an external device can be connected directly to J6. In this configuration, the data of the serial interface are displayed on the GUI or the LCD. In standalone mode, regardless to the demoboard type (AS5040 or AS5140), AS5040 and AS5140 can •...
  • Page 4: As5000 Programmer Gui Software

    By default the GUI is in the auto detection mode. Any connected austriamicrosystems demoboard and programming tool will be automatically detected and displayed in the right top corner. The GUI is divided into three main sections HOME, SSI and OTP.
  • Page 5: The Ssi Tab

    This mode displays in realtime the angle & absolute value, status bits and magnet range status. By selecting the SSI (serial protocol for AS5040, AS5140, AS5043, AS5143, AS5045, AS5145) tab, the information of the angular position and the status bits appears. See figure 5.
  • Page 6: The Otp Tab

    Field Incremental Mode Selection: To change the Incremental AB-Index output to: 0: Default 1: Quadrature 2: Step Dir 3: Commutation Note that the Zap! button is used for the AS5000 Programmer only and has no effect on the AS5X40 Demoboard. Revision 1.0, 29-Jan-2009 www.austriamicrosystems.com Page 6 of 12...
  • Page 7: As5X40 Demoboard, Schematics, Blockdiagramm

    INT_CSn 3.3V 3.3V Prog MCLSS22_DPDT Prog Header 7 BAT54 External encoder Vbat Vout Vout LL4001 Header 2 AS1360-50 AS1360-30 9V Battery Figure 7: AS5x40 Demoboard schematics Figure 4: AS5x40 Demoboard PCB Layout Revision 1.0, 29-Jan-2009 www.austriamicrosystems.com Page 7 of 12...
  • Page 8 AS5X40 Demoboard OPERATIONAL MANUAL Figure 9: AS5x40 Blockdiagramm Revision 1.0, 29-Jan-2009 www.austriamicrosystems.com Page 8 of 12...
  • Page 9: Table Of Contents

    The Home tab ................................4 The SSI tab................................5 The OTP tab ................................6 AS5X40 Demoboard, Schematics, Blockdiagramm ......................7 Index......................................9 Revision History ..................................10 Contact ..................................... 11 Copyright ....................................12 Revision 1.0, 29-Jan-2009 www.austriamicrosystems.com Page 9 of 12...
  • Page 10: Revision History

    AS5X40 Demoboard OPERATIONAL MANUAL Revision History Revision Date Description First version R1.0 March.16, 2009 Revision 1.0, 29-Jan-2009 www.austriamicrosystems.com Page 10 of 12...
  • Page 11: Contact

    AG A 8141 Schloss Premstätten, Austria Phone: +43 3136 500 0 Fax: +43 3136 525 01 industry.medical@austriamicrosystems.com www.austriamicrosystems.com austriamicrosystems USA, Inc. Sales Offices 8601 Six Forks Road austriamicrosystems Germany GmbH Suite 400 Tegernseer Landstrasse 85 Raleigh, NC 27615, USA D-81539 München, Germany...
  • Page 12: Copyright

    No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems rendering of technical or other services.

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As5140

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