AMS AS5247 User manual

Eval Kit Manual
DN[Document ID]
ams Eval Kit Manual
Page 1
[v1-10] 2015-Sep-16
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AS5247
Adapter Board
AS5247-MF_EK_AB

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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Content Guide
1Introduction .......................................................................................................................... 3
1.1 Kit Content ........................................................................................................................... 3
2Board description................................................................................................................. 4
2.1 Mounting the AS5247 adapter board................................................................................... 5
3AS5247 adapter board and pinout....................................................................................... 6
4Operation case..................................................................................................................... 8
4.1 One device SPI mode, unidirectional –3 wire..................................................................... 8
4.2 One device SPI mode, bidirectional –4 wire....................................................................... 9
5AS5247-MF_EK_AB Hardware.......................................................................................... 10
5.1 AS5247-MF_EK_AB schematics.......................................................................................10
5.2 AS5247-MF_EK_AB PCB layout .......................................................................................11
6Ordering & Contact Information .........................................................................................12
7Copyrights & Disclaimer.....................................................................................................13
8Revision Information ..........................................................................................................14

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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1 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
1
2

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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2 Board description
The PCB can either be connected to an external microcontroller, or to the I&P USB Box using the 5-
pin 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 2x8 pin header and can be used for ABI and UVW interfaces.
Figure 2: AS5247 adapter board
P1 connector
AS5247
4x3mm
Mounting holes
P2 connector
(not populated)

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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2.1 Mounting the AS5247 adapter board
Figure 3: Mounting and dimensions
A 8 x 2.5 mm diametric magneticed 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.
Recommendet nominal airgap for the 8 mm magnet = 2 mm.
Recommendet 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.
MOSI
30mm
9.5mm
11mm
4x3mm
AS5247
0.5-3mm
AS5247
MISO
GND
CLKCS_T
NC CS_B
5V
GND
UV W BA I
Bottom
Top
GND GNDU V W B
AI
GNDNC NC
30mm
18mm

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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3 AS5247 adapter board and pinout
Figure 4: AS5247 adapter board and sensor pinout
Pin#
Board
Pin#
AS5247
Symbol
board
Type
Description
P1 - 1
25, 26
5V
Power supply
Positive supply voltage
P1 - 2
NC
Not connected
P1 - 3
1
CS_T
Digital input
SPI chip select (active low) top die
P1 - 4
NC
Not connected
P1 - 5
2, 3
CLK
Digital input
SPI Clock
P1 - 6
NC
Not connected
P1 - 7
6, 7
MOSI
Digital input
SPI MOSI
P1 - 8
40
CS_B
Digital input
SPI chip select (active low) bottom die
P1 - 9
4, 5
MISO
Digital output
SPI MISO
P1 - 10
29, 30
GND
Power supply
Ground
P2 –1
29, 30
GND
Power supply
Ground
P2 - 2
29, 30
GND
Power supply
Ground
P2 - 3
24
U_T
Digital output
Commutation signal U of top die
MOSI
AS5247
MISO
GND
CLKCS_T
NC CS_B
5V
GND
UV W BA I
Bottom
Top
GND GND
UV W BA I
GNDNC NC
AS5235
1
2
3
4
5
6
7
8
30
29
28
27
26
25
24
23
40 39 38 37 36 35 34
33
11 12 13 14 15 16 17 18
9
10
32 31
22
21
19 20
AS5247
EP
CSn_T
CLK_B
CLK_T
MISO_B
MISO_T
MOSI_B
MOSI_T
Test_B
Test_T
B_B
B_T
A_B
A_T
nc nc nc nc nc
W_B/PWM_B
W_T/PWM_T
GND_T
GND_B
VDD3V3_T
VDD3V3_B
VDD_T
VDD_B
U_T
U_B
V_T
V_B

AS5247 Adapter Board
ams Eval Kit Manual
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Pin#
Board
Pin#
AS5247
Symbol
board
Type
Description
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

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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4 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
MOSI
AS5247
MISO
GND
CLKCS_T
NC CS_B
5V
GND
UV W BA I
Bottom
Top
GND GND
UV W BA I
GNDNC NC
Regulated
Power Supply
5V
GND
MISO MOSI
SCK
SS1/
GND
VDD
MCU
SS2/

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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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
MOSI
AS5247
MISO
GND
CLKCS_T
NC CS_B
5V
GND
UV W B
A I
Bottom
Top
GND GND
UV W BA I
GNDNC NC
Regulated
Power Supply
5V
GND
MISO MOSI
SCK
SS1/
GND
VDD
MCU
SS2/

AS5247 Adapter Board
ams Eval Kit Manual
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[v1-10] 2015-Sep-16
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5 AS5247-MF_EK_AB Hardware
5.1 AS5247-MF_EK_AB schematics
Figure 7: AS5247-MF_EK_AB schematics