ams AS5247 Adapter Board User Manual
- June 12, 2024
- ams
Table of Contents
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
| Pos. | Item | Comment |
|---|---|---|
| 1 | AS5247-MF_EK_AB | Adapter board |
| 2 | AS5000-MD8H-1 | Diametric Magnet, D8x2.5mm, NdFeB, Bomatec AG |
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
| Ordering Code | Description |
|---|---|
| AS5247-MF_EK_AB | AS5247 Eval Kit Adapter Board |
Buy our products or get free samples online at:
www.ams.com/Products
Technical Support is available at: www.ams.com/Technical-
Support
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Copyrights & Disclaimer
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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,
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Revision Information
| Changes from previous version to current revision 1-2 (2019-Mar-08) | Page |
|---|---|
| Initial version 1-00 | |
| V 1-10, Mechanical dimension changed | 5 |
| V 1-10, AS5247 Pinout changed | 6 |
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
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