ams AS5247 Adapter Board User Manual

AS5247 Adapter Board
User Manual

Published by ams OSRAM Group
Product Document
AS5247
Adapter Board
AS5247-MF_EK_AB

Introduction

The AS5247 adapter board is a small PCB allowing simple and quick testing or evaluation of the AS5247 magnetic position sensor without the need to build a test fixture or design an own PCB.
1.1 Kit Content

Figure 1: Kit content

Board description

The PCB can either be connected to an external microcontroller, or to the I&P USB Box using the 5pin dual row connector P1.
P1 is already populated and gives access for power supply as well as SPI interface.
P2 has to be populated with a 2×8 pin header and can be used for ABI and UVW interfaces.

Figure 2: AS5247 adapter board

2.1 Mounting the AS5247 adapter board

Figure 3: Mounting and dimensions

A 8 x 2.5 mm diametric magnetized magnet must be placed over or under the AS5247 sensor, and should be centered on the middle of the package with a tolerance of 0.5 mm. The airgap between the magnet surface and the package should be maintained in the range 0.5 mm to 3 mm.
Recommended nominal airgap for the 8 mm magnet = 2 mm.
Recommended nominal airgap for the 6 mm magnet = 1.5 mm.
The magnet holder must not be ferromagnetic. Materials as brass, copper, aluminum, stainless steel are the best choices to make this part.

AS5247 adapter board and pinout

Figure 4: AS5247 adapter board and sensor pinout

Pin# Board| Pin# AS5247| Symbol board| Type| Description
---|---|---|---|---
P1 – 1| 4, 5| MISO| Digital output| SPI MISO
P1 – 2| 29, 30| GND| Power supply| Ground
P1 – 3| 6, 7| MOSI| Digital input| SPI MOSI
P1 – 4| 40| CS_B| Digital input| SPI chip select (active low) bottom die
P1 – 5| 2, 3| CLK| Digital input| SPI Clock
P1 – 6|  | NC|  | Not connected
P1 – 7| 1| CS_T| Digital input| SPI chip select (active low) top die
P1 – 8|  | NC|  | Not connected
P1 – 9| 25, 26| 5V| Power supply| Positive supply voltage
P1 – 10|  | NC|  | Not connected
P2 – 1| 29, 30| GND| Power supply| Ground
P2 – 2| 29, 30| GND| Power supply| Ground
Pin# Board| Pin# AS5247| Symbol board| Type| Description
---|---|---|---|---
P2 – 3| 24| U_T| Digital output| Commutation signal U of top die
P2 – 4| 23| U_B| Digital output| Commutation signal U of bottom die
P2 – 5| 22| V_T| Digital output| Commutation signal V of top die
P2 – 6| 21| V_B| Digital output| Commutation signal V of bottom die
P2 – 7| 20| W_T| Digital output| Commutation signal W or PWM of top die
P2 – 8| 19| W_B| Digital output| Commutation signal W or PWM of bottom die
P2 – 9| 13| A_T| Digital output| Incremental signal A (quadrature) of top die
P2 – 10| 12| A_B| Digital output| Incremental signal A (quadrature) of bottom die
P2 – 11| 11| B_T| Digital output| Incremental signal B (quadrature) of top die
P2 – 12| 10| B_B| Digital output| Incremental signal B (quadrature) of bottom die
P2 – 13| 32| I_T| Digital output| Incremental signal I (index) or PWM of top die
P2 – 14| 31| I_B| Digital output| Incremental signal I (index) or PWM of bottom die
P2 – 15| 29, 30| GND| Power supply| Ground
P2 – 16| 29, 30| GND| Power supply| Ground

Operation case

4.1 One device SPI mode, unidirectional – 3 wire

The AS5247 adapter board can be directly connected to an industry standard SPI port of a microcontroller. The minimum connection requirements for unidirectional communication between the microcontroller and the AS5247 are MISO, CLK, CSn. In this case the MOSI pin is tied to VDD wich will result in reading only the 14-bit Angle Register (0x3FFF). See AS5247 datasheet register table, register 0x3FFF.
Figure 5: One device SPI mode, unidirectional – 3 wire

4.2 One device SPI mode, bidirectional – 4 wire
If it’s needed to read other registers than the Angle Register (0x3FFF) or to write to registers of the AS5247 the MOSI connection is required.
Figure 6: One device SPI mode, bidirectional – 4 wire

AS5247-MF_EK_AB Hardware

5.1 AS5247-MF_EK_AB schematics
Figure 7: AS5247-MF_EK_AB schematics

5.2 AS5247-MF_EK_AB PCB layout
Figure 8: AS5247-MF_EK_AB PCB layout

Ordering & Contact Information

Buy our products or get free samples online at: www.ams.com/Products
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Headquarters ams AG
Tobelbader Strasse 30
8141 Premstätten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com

Copyrights & Disclaimer

Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. 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.
Demo Kits, Evaluation Kits and Reference Designs are provided to recipient on an “as is” basis for demonstration and evaluation purposes only and are not considered to be finished end-products intended and fit for general consumer use, commercial applications and applications with special requirements such as but not limited to medical equipment or automotive applications. Demo Kits, Evaluation Kits and Reference Designs have not been tested for compliance with electromagnetic compatibility (EMC) standards and directives, unless otherwise specified. Demo Kits, Evaluation Kits and Reference Designs shall be used by qualified personnel only.
ams AG reserves the right to change functionality and price of Demo Kits, Evaluation Kits and Reference Designs at any time and without notice.
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ams AG 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 connection 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 flow out of ams AG rendering of technical or other services.

Revision Information

V 1-12, new mechanical dimensions and P1 pinout updated

Note: Page numbers for the previous version may differ from page numbers in the current revision. Correction of typographical errors is not explicitly mentioned.

ams Eval Kit Manual
[v1-2] 2019-Mar-08
Downloaded from Arrow.com.

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