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AS5043 / AS5143 Demoboard
OPERATION MANUAL Application note
1 General Overview
The AS5x43 is a contactless magnetic angle encoder for accurate measurement up to 360°.
It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single
device. device.
The AS5x43 provides a digital 10-bit as well as a programmable analog output that is directly proportional to the angle
of a magnet, rotating over the chip.
The AS5x43 provides a digital 10-bit as well as a programmable analog output that is directly proportional to the angle
of a magnet, rotating over the chip.
The analog output can be configured in many ways, including user programmable angular range, adjustable output
voltage range, voltage or current output, etc.
The analog output can be configured in many ways, including user programmable angular range, adjustable output
voltage range, voltage or current output, etc.
An internal voltage regulator allows operation of the AS5x43 from 3.3V or 5.0V supplies. An internal voltage regulator allows operation of the AS5x43 from 3.3V or 5.0V supplies.
2 The AS5x43 Demoboard 2 The AS5x43 Demoboard
The AS5x43 demoboard is a complete rotary encoder system with built-in microcontroller, USB interface, graphical LCD
display and Vout output LED.
The AS5x43 demoboard is a complete rotary encoder system with built-in microcontroller, USB interface, graphical LCD
display and Vout output LED.
The board is USB powered or externally supplied with a 9V battery for standalone operation. The board is USB powered or externally supplied with a 9V battery for standalone operation.
9V battery connector
(standalone only)
J6: External Encoder
SSI Connector
Knob with D5x2.5mm
diametral magnet,
2mm over the AS5X4X
External (left) – Onboard (right)
encoder selection switch SW1 Onboard AS5x43 output signals connector and indicators:
SiLabs C8051F320
microcontroller
USB cable to the PC
LCD display (for standalone mode)
Figure 1: AS5x43 Demoboard hardware with mounted magnet knob
3 Operating the AS5x43 Demoboard
The AS5x43 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.
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3.1 Hardware Indi cators and Connectors
3.1.1 Graphic LCD display
The LCD display shows the realtime absolute angle position of the magnet with a resolution of 0.35° = 1024 positions
per revolution (AS5x43) and the absolute value of the angle.
Turning the knob clockwise will increase the angle value until 359.6 then 0.
The magnet status indicator is related to the magnet position. If the magnet is too close to the encoder, “Magnet too
close” will be displayed. If the magnet is too far away from the encoder, “Magnet out of range” will be displayed.
Magnet indicator:
- OK (distance OK)
- Magnet out of range
Magnet angle value:
From 0° to 359.6°
A
bsolute angle value
10 bit resolution:
From 0 to 1023
Bargraph representation of
the angle:(0° to 359.6°)
Figure 2: LCD display in standalone mode (9V battery or USB powered without GUI)
3.1.2 Vout LED
This LED is connected to the Vout output of the AS5x43 device.
Vout is the analog output pin, which provides a DC voltage radiometric to the supply voltage of the device or an external
voltage source. This DC voltage is proportional to the angle.
By default, the OPAMP Gain setting FB_int_EN (OTP bit) is set to 0. Please take care to add an external resistor
network between Vout and FB Pin (see AS5043 Datasheet Figure 14).
3.1.3 DACref
This is the external voltage reference input for the Digital-to-Analog Converter (DAC).
The analog output voltage of Vout is radiometric to the voltage on this pin.
3.1.4 DACout
This is the unbuffered output of the Digital-to-Analog Converter (DAC). This pin may be used to connect an external
OPAMP, etc. to the DAC.
3.1.5 FB
Feedback (FB) is the inverting input of the OPAMP buffer stage, where various OPAMP configurations may be set.
3.1.6 MagRNG
The Magnet Field Magnitude RaNGe warning indicates if the magnetic field is outside of the limits.
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3.1.7 Encoder selection switch
The switch SW1 selects the encoder which communicates with the microcontroller through the SSI bus:
1. Right position (default): Onboard AS5043/AS5143
2. Left Position: External AS5043/AS5143 connected on J6
The signals of the synchronous serial interface (DO, CLK, CSn, PROG) and the power supply (3.3V,
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 (AS5043 or AS5143), AS5043 and AS5143 can
be attached to J6 and evaluated. See figure 3.
• If the GUI is used for operation, additional devices AS5040, AS5140, AS5045 and AS5145 can be
connected to J6 and evaluated. In that case, the correct encoder must be selected instead of “Autoselect” in
the Device list of the PC software, see chapter Error! Reference source not found. figure 4.
2.2u
AS 5043 / AS5143
DO
CLK
CSn
VDD5
VDD33
PROG
VSS
Demoboard switched to external
encoder mode
Figure 3: external AS5043/AS5143 connection to the demoboard
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4 AS5000 Programmer GUI software
4.1 Installing the GUI on the PC
The preliminary software is developed for a Microsoft Windows XP operating system with Service Pack 2. In addition
the dotnet (.NET) framework version 2.0 or more must be installed on the PC. This package can be downloaded free of
charge from the Microsoft webpage:
http://www.microsoft.com/downloads/details.aspx?FamilyID=0856eacb-4362-4b0d-8edd-aab15c5e04f5&displaylang=en
Following Procedure is recommended before starting the GUI:
1. check on your PC if Service Pack 2 is installed
2. install the mentioned .NET package to your computer
3. execute setup.exe
4. Finally start the GUI using the shortcut in the start menu or desktop.
4.2 The Home tab
Figure 4 shows the main window of the GUI. On the top left corner, board information’s as firmware (FW) version and
demoboard name declaration can be found.
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.
Device selection list:
Change the encoder type if a different encoder type is
connected externally on J6 and SW1 on left position
Figure 4: AS5000 GUI detected the AS5043 Demoboard
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4.3 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.
Magnet range warning:
- Green: magnet in Range
- Orange: magnet too close or too
far
Not used
(
dual die encoders onl
y)
Status bits information
A
ngle value:
10 bit absolute position:
From 0 to 1023
Set counter clockwise
Display update rate.
The readout speed can be adjusted
from 10ms to 1s
A
ngle register value:
Zero position register access:
- Button SET: Sets the current angle
as the 0° angle
- Button RESET: resets the Zero
Position register to 0 (default)
Magnet angle value:
From 0
–
359,6°
Figure 5: SSI tab , allows access to the AS5 x43 registers from the seri al bus
Value is the Angle data [D9:D0] from the RD_ANGLE (Read Angle) serial command.
This value is continuously updated.
The Zero Pos. value represents the Zero Position register. By clicking on the Set button, the actual angle “Value” is written
into the Zero Position register. Clicking on Reset writes the value 0 to the Zero Position register.
The Magnetic Range Warning is continuously read from the RD_ANGLE serial command.
• Green lamp: Magnet in range
• Orange lamp: Magnet too far or too close. MagINC and MagDEC are set.
The Status bits information are taken from the serial stream.
The Read Interval can be modified from 10 ms (fastest) to 1 s (slowest).
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4.4 The OTP tab
The OTP tab is normally used for the AS5000 programmer, but the OTP bits can be changed on the AS5x43 demoboard as
well.
Options like Zero Position, Pulses per revolution and Incremental Mode Selection can be changed by selecting the function
in “Fields”, then changing the parameter in “Options for the selected field” or directly the decimal value of this parameter in
“Value”.
Each time a field’s value has been changed, the corresponding OTP bits will be automatically checked in the right window.
The button Write should be clicked to write the parameter into the AS5x43.
The Read button reads back the OTP register, and updates the “Field” parameter as well as the OTP bits window.
Figure 6: OTP tab
Field Zero Position: To zero position value, like on the SSI tab. The zero position value can be changed by checking the
Z[0:9] bits, or changing the Value field with a decimal number.
Field Analog Output Range Selection (Output Range):
The analog output can be configured to 360°, 180°, 90° and 45° angular range.
Note that the Zap! button is used for the AS5000 Programmer only and has no effect on the AS5x43 Demoboard.
Important:
If the OPAMP Gain setting FB_int_EN is set to 0 (default), please take care to add an external resistor network between Vout
and FB Pin (see AS5043 Datasheet Figure 14).
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5 AS5x43 Demoboard, Schematics, Blockdiagramm
GND
1
Vout 2
Vin
3U4
AS1360-30
D2
BAT54
C19
100n
1
2
J5
Header 2
VBUS 1
D- 2
D+ 3
GND 4
SHLD 5
J3
440478-1
1
2
3
4
J2
Header 4
CS1n
1
RESn
2
A0
3
R/W
4
E
5
D0
6
D1
7
D2
8
D3
9
D4
10
D5
11
D6
12
D7
13
VDD
14
VSS
15
Vout
16
Cap3-
17
Cap1+
18
Cap1-
19
Cap2-
20
Cap2+
21
V1
22
V2
23
V3
24
V4
25
V5
26
VDD
27
C86
28
Shield
0
J1
DisplayTech32128a
GND
GND
C23
10u
Vbat 5V 3V
GND
GND
C4
100n
GND
3.3V
3.3V
GND
C2
10u
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
Analog_in
LCD_E
LCD_RW
LCD_A0
3.3V
Prog
Int_DO
Int_CLK
Int_CSn
GND
1
2
3
4
5
6
J7
Header 6
GND
DS1
LED_Y
R6
1k
GND
R1
10k GND
C3
100n
GND
3V
3V
GND
3V
GND
C16
1u
C15
1u
C14
1u
C13
1u
C12
1u
GND
C8
1u
C10
1u
C11
1u
GND
C9
1u
R2
nc
C6
100n
3V
GND
C2CK
C2D
C7
100n
C1
100n
C5
1u
GND
P0.1 1
P0.0 2
P2.7 11
P2.6 12
P2.5 13
P2.4 14
P2.3 15
P2.2 16
P2.1 17
P2.0 18
P1.7 19
P1.6 20
P1.5 21
P1.4 22
P1.3 23
P1.2 24
P1.1 25
P1.0 26
P0.7 27
P0.6 28
P0.5 29
P0.4 30
P0.3 31
P0.2 32
GND
3
D+
4D-
5
VDD
6
RegIn
7
VBUS
8
RST/C2CK
9
P3.0/C2D
10
U1
C8051F320
5V
D7..0
C24
1u
C22
22u
5V R13
33R
BL_A
GND
1
Vout 2
Vin
3U3
AS1360-50
D1
LL4001
C21
1u
D3
BAS70-05
Vbat R14
68R
9V Battery
USB
ISP
LCD Ba c k light
C20
100n
C25
10n
GND
FB
DACout
DACref
Vout
MagRNGn
1
Mode
2
CSn
3
CLK
4
nc
5
DO
6
VSS
7
PROG
8DACref 9
DACout 10
FB 11
Vout 12
nc 13
nc 14
VDD3V3 15
VDD5V 16
U2
AS5043
GND
DS2
LED_R
R7
1k
Mod e
3.3V
MagRNG
MagRNG
R3
3.3k R4
10k
GND
Analog_in
R5
nc
R8
0R
GND
1
2
3
4
5
6
7
J6
Header 7
Prog
5V
3.3V
CSn
CLK
DO
GND
GND
3.3V
5V
Ext_CSn
Ext_CLK
Ext_DO
Prog
Ex t e rnal encoder
SW1
MCLSS22_DPDT
Int_DO DO
CSn
INT_CSn
LCD_A0
LCD_RW
Int_CLK
CSn
Ext_CLK
DO
LCD_E
Prog
Figure 7: AS5x43 Demoboard schematics
Figure 4: AS5x43 Demoboard PCB Layout
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Figure 9: AS5 x43 Blockdiagramm
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AS5x43 Demoboar d OPERATIONAL MANUAL
Index
1 General Overview..............................................................................................................................................................1
2 The AS5x43 Demoboard...................................................................................................................................................1
3 Operating the AS5x43 Demoboard...................................................................................................................................1
3.1 Hardware Indicators and Connectors.......................................................................................................................2
3.1.1 Graphic LCD display........................................................................................................................................2
3.1.2 Vout LED..........................................................................................................................................................2
3.1.3 DACref.............................................................................................................................................................2
3.1.4 DACout.............................................................................................................................................................2
3.1.5 FB ....................................................................................................................................................................2
3.1.6 MagRNG..........................................................................................................................................................2
3.1.7 Encoder selection switch..................................................................................................................................3
4 AS5000 Programmer GUI software...................................................................................................................................4
4.1 Installing the GUI on the PC.....................................................................................................................................4
4.2 The Home tab...........................................................................................................................................................4
4.3 The SSI tab...............................................................................................................................................................5
4.4 The OTP tab.............................................................................................................................................................6
5 AS5x43 Demoboard, Schematics, Blockdiagramm...........................................................................................................7
Index...........................................................................................................................................................................................9
Revision History .......................................................................................................................................................................10
Contact.....................................................................................................................................................................................11
Copyright..................................................................................................................................................................................12
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Revision History
Revision Date Description
R1.0 June.17, 2009 First version
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Contact
Headquarters
austriamicrosystems AG
A 8141 Schloss Premstätten, Austria
Phone: +43 3136 500 0
Fax: +43 3136 525 01
industry.medical@austriamicrosystems.com
www.austriamicrosystems.com
Sales Offices
austriamicrosystems Germany GmbH
Tegernseer Landstrasse 85
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Phone: +49 89 69 36 43 0
Fax: +49 89 69 36 43 66
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Phone: +39 02 4586 4364
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Phone: +33 1 43 74 00 90
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Rietstrasse 4
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Phone: +41 55 220 9008
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Phone: +44 118 973 1797
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Bivägen 3B
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Phone: +46 8 6231 710
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Phone: +1 919 676 5292
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Copyright
Devices sold by austriamicrosystems are covered by the warranty and patent indemnification provisions appearing in its
Term of Sale. austriamicrosystems makes no warranty, express, statutory, implied, or by description regarding the
information set forth herein or regarding the freedom of the described devices fro m patent infringement. austriamicrosystems
reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this
product into a system, it is necessary to check with austriamicrosystems for current information. This product is intended for
use in normal commercial applications.
Copyright © 2009 austriamicrosystems. Trademarks registered ®. All rights reserved. The material herein may not be
reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. To the
best of its knowledge, austriamicrosystems asserts that the inform ation contained in this publication is accurate a nd correct.
However, austriamicrosystems shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or
consequential damages, of any kind, in connect ion with or arising out of the furnishing, performance or use of the technical
data herein. No obligation or liability to recipient or any third party shall arise or fl ow out of austriamicrosystems rendering of
technical or other services.
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