ST X-NUCLEO-IHM09M1 User manual

October 2015
DocID028558 Rev 1
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www.st.com
UM1970
User Manual
Getting started with the X-NUCLEO-IHM09M1 motor control
connector expansion board for STM32 Nucleo
Introduction
The X-NUCLEO-IHM09M1 is a motor control connector expansion board for STM32 Nucleo. It provides
an easy way to evaluate motor control solutions for three-phase motors by adapting the STM32 Nucleo
board with an external ST motor control power board, thanks to ST morpho and motor control
connector. The 34-pin motor control connector is compatible with all major ST motor control power
boards, requiring an external digital section (MCU) to drive a three-phase motor. The DAC connector
supports user code development and testing with easy access to the MCU peripherals. An LED is
available for fault condition signaling or status indication.
This document describes the procedure for configuring this STM32 NUCLEO expansion board to
operate with the STM32 Nucleo board and run a voltage 3-phase brushless motor. The board is fully
compatible with the ST Six-Step and FOC (field oriented control) firmware library.
Figure 1: X-NUCLEO-IHM09M1 motor control connector expansion board

Contents
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Contents
1System overview .............................................................................3
1.1 Main characteristics ..........................................................................3
1.2 Target application..............................................................................3
2Getting started.................................................................................4
2.1 System architecture ..........................................................................4
2.2 Building the system...........................................................................4
2.2.1 Hardware settings............................................................................... 5
2.2.2 Motor control connector pinout........................................................... 9
2.2.3 DAC settings for debug .................................................................... 11
2.2.4 User LED.......................................................................................... 11
3MC FOC SDK –Configuration guide for X-NUCLEO-IHM09M1 ..12
4Schematic diagram........................................................................13
5Bill of materials..............................................................................16
6Revision history ............................................................................18

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System overview
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1 System overview
1.1 Main characteristics
The information listed below shows the board specification data and the main parameters
set for the X-NUCLEO-IHM09M1 expansion board for STM32 Nucleo:
ST motor control connector (34 pins) compatible with major ST motor control power
boards
STM32 Nucleo support, thanks to ST morpho connectors
Compatible with six-step and FOC motor control firmware library by ST
Debug connector for DAC, GPIOs, etc.
Fully populated board conception with test points
LED for fault signaling or status indication
Potentiometer available (i.e. for speed reference)
PCB type and size:
PCB material - FR-4
layout - double layer
copper thickness - 35 μm
overall board dimensions - 70 mm x70 mm
RoHS compliant
1.2 Target application
3-phase motor driver

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2 Getting started
2.1 System architecture
A generic motor control system can be broken down into the following three major blocks:
1. Control block - accepts user commands and provides motor control signals to drive a
motor. The X-NUCLEO-IHM09M1 adapter connects an STM32 Nucleo board with a
power board requiring an external digital section.
2. Power block - is normally in a 3-phase inverter topology and contains all the
necessary active power and analog components to perform low voltage PMSM/BLDC
motor control.
3. Motor - 3 phase brushless motor.
Figure 2: System architecture
2.2 Building the system
The X-NUCLEO-IHM09M1 adapts the STM32 Nucleo to ST motor control power boards
requiring an external digital section to perform three-phase PMSM/BLDC motor control. For
regular board operation, it must be plugged on top of an STM32 Nucleo board (control
block) via the ST morpho connector as shown below.

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Figure 3: X-NUCLEO-IHM09M1 plugged on STM32 Nucleo
The interconnection between the STM32 Nucleo board and the X-NUCLEO-IHM09M1
expansion board is designed for full compatibility with a wide range of STM32 Nucleo
boards, with no solder bridge modification required. The stacked solution is ready to
operate in connection with a power board compatible with a standard 34-pin flat cable.
2.2.1 Hardware settings
J1 - jumper OFF
R26 - potentiometer
D1 –LED for fault or status indication
Table 1: Connectors
Part name
Function
J7
34-pin motor control connector
J1
DAC/GPIO output
CN7
ST morpho connector
CN6
Arduino UNO R3 Connector
CN8
Arduino UNO R3 Connector
CN10
ST morpho connector
CN5
Arduino UNO R3 Connector
CN9
Arduino UNO R3 Connector
D1
LED

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Figure 4: X-NUCLEO-IHM09M1 –top layer with silk-screen
The X-NUCLEO-IHM09M1 is equipped with ST morpho connectors - male pin headers
(CN7 and CN10), which can be used to connect expansion boards to the STM32 Nucleo
board. All signals and power pins of the MCU are available on the STMicroelectronics
morpho connector. For further details please refer to user manual UM1724, section 5.12 -
STMicroelectronics morpho connector available on website www.st.com.
Table 2: ST morpho connector –CN7
Pin
Default
Signal
Solder Bridge
Notes
1
PC10
NTC bypass
R17
2
PC11
Dissipative Brake/OCP disable
R19
3
PC12
4
PD2
5
VDD
6
E5V
7
BOOT0

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Pin
Default
Signal
Solder Bridge
Notes
8
GND
9
NC/PF6
10
NC
11
NC/PF7
12
IOREF
13
PA13
14
RESET
15
PA14
16
+3V3
17
PA15
Encoder A/ Hall H1
R27
18
+5V
19
GND
20
GND
21
PB7
22
GND
23
PC13
24
VIN
25
PC14
26
NC
27
PC15
28
PA0
Curr_fdbk_PhA
R4
29
PH0/PF0/PD0
30
PA1
VBUS_sensing
R5
31
PH1/PF1/PD1
32
PA4
DAC_Ch
R18 N.M.
33
VLCD/VBAT
34
PB0
VL_PWM
R15
35
PC2
Temperature feedback
R10
36
PC1 or PB9
Curr_fdbk_PhB
R9
Refer to UM1724 Table
9: Solder bridges for
further details
37
PC3
Potentiometer
R28
38
PC0 or PB8
Curr_fdbk_PhC
R7
Refer to UM1724 Table
9: Solder bridges for
further details

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Table 3: ST morpho connector –CN10
Pin
Default
Signal
Solder Bridge
Notes
1
PC9
2
PC8
3
PB8
4
PC6
5
PB9
6
PC5
7
AVDD
8
U5V
U5V is 5 V power from
ST-LINK/V2-1 USB
connector and it rises
before +5 V
9
GND
10
NC
11
PA5
GPIO/DAC/PWM
R21
For NUCLEO-F302R8
only: pin PA5 is on
CN10/pin 30 and PB13 is
on CN10/pin 11
12
PA12
13
PA6
DIAG/ENABLE/BKIN1
R3
For NUCLEO-F302R8
only: pin PA6 is on
CN10/pin 28 and PB14 is
on CN10/pin 13
14
PA11
DIAG/ENABLE/BKIN2
R1
15
PA7
UL_PWM
R12
For NUCLEO-F302R8
only: pin PA7 is on
CN10/pin 26 and PB15 is
on CN10/pin 13
16
PB12
17
PB6
18
PB11/NC
19
PC7
20
GND
21
PA9
VH_PWM
R8
22
PB2
LED RED
R14
23
PA8
UH_PWM
R6
24
PB1
WL_PWM
R16
25
PB10
Encoder Z/ Hall H3
R25
26
PB15
For NUCLEO-F302R8
only: pin PA7 is on
CN10/pin 26 and PB15 is
on CN10/pin 13
27
PB4
PWM/DEBUG
R20

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Pin
Default
Signal
Solder Bridge
Notes
28
PB14
DIAG/ENABLE/BKIN1
R2
For NUCLEO-F302R8
only: pin PA6 is on
CN10/pin 28 and PB14 is
on CN10/pin 13
29
PB5
GPIO/DAC/PWM
R23
30
PB13
GPIO/DAC/PWM
R22
For NUCLEO-F302R8
only: pin PA5 is on
CN10/pin 30 and PB13 is
on CN10/pin 11
31
PB3
Encoder B/ Hall H2
R24
32
AGND
33
PA10
WH_PWM
R11
34
PC4
35
PA2
36
NC/PF5
37
PA3
38
NC/PF4
2.2.2 Motor control connector pinout
Figure 5: Motor control connector J7 (top view)
The X-NUCLEO-IHM09M1 expansion board supports motor control via the J7 34-pin
connector, which provides all the required control and feedback signals to and from an ST
motor power-drive board. The signals available on this connector include emergency stop,
speed or position feedback, three-phase motor current, bus voltage sensor and heatsink
temperature sensor from the motor.

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Table 4: ST motor control connector J7 pin assignments
Pin
Default
Function
1
PA6/PA11
DIAG/ENABLE/BKIN1
2
GND
Dissipative brake/OCP disable
3
PA8
UH_PWM
4
GND
5
PA7/PB15
UL_PWM
6
GND
7
PA9
VH_PWM
8
GND
9
PB0
VL_PWM
10
GND
11
PA10
WH_PWM
12
GND
13
PB1
WL_PWM
14
PA1
VBUS_sensing
15
PA0
Curr_fdbk_PhA
16
N.C.
17
PC1
Curr_fdbk_PhB
18
N.C.
19
PC0
Curr_fdbk_PhC
20
N.C.
21
PC10
NTC bypass
22
N.C.
23
PC11
Dissipative brake/OCP disable
24
N.C.
25
E5V
26
PC2
Temperature feedback
27
N.C.
28
3V3
29
N.C.
30
N.C.
31
PA15
Encoder A/ Hall H1
32
N.C.
33
PB3
Encoder B/ Hall H2
34
PB10
Encoder Z/ Hall H3

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2.2.3 DAC settings for debug
For debugging purposes, it is possible to use the DAC peripheral and configure the motor
control library in order to drive the signal. For instance, the PA4 pin is accessible through
the ST morpho connector or J1 connector and it is typically connected to DAC_CH1. Other
pins are available at the J1 connector according to the STM32 Nucleo board used.
2.2.4 User LED
The X-NUCLEO-IHM09M1 provides a programmable LED (D1) connected on pin PB2. It
can be used to signal motor status, faults, etc. This pin must be configured at the user level
and driven by the application code written by the user.

MC FOC SDK –Configuration guide for
X-NUCLEO-IHM09M1
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3 MC FOC SDK –Configuration guide for
X-NUCLEO-IHM09M1
The X-NUCLEO-IHM09M1 expansion board for the STM32 Nucleo is compatible with the
motor control (MC) FOC SDK (firmware library and Workbench software graphical user
interface), and no hardware modification is needed to run the motor with this control
algorithm. During MC FOC SDK pin configuration, please adhere to the indications in Table
2: ST morpho connector –CN7 and Table 3: ST morpho connector –CN10.
Connection of the STM32 Nucleo board with the MC Workbench software graphical user
interface (GUI) is possible through a virtual COM embedded in the STM32 Nucleo board
that allows the use of the USART2 on PA2 and PA3 pins directly from the same USB type
A to Mini-B USB cable used for STM32 Nucleo programming.
For further information regarding MC FOC SDK, please consult the STSW-STM32100
documents on the ST website: www.st.com.

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Schematic diagram
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4 Schematic diagram
Figure 6: X-NUCLEO-IHM09M1 schematic: PWM
Figure 7: X-NUCLEO-IHM09M1 schematic: Hall/encoder sensor
Figure 8: X-NUCLEO-IHM09M1 schematic: currents
Figure 9: X-NUCLEO-IHM09M1 schematic: DAC

Schematic diagram
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Figure 10: X-NUCLEO-IHM09M1 schematic: user interface
Figure 11: X-NUCLEO-IHM09M1 schematic: motor control connector

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Figure 12: X-NUCLEO-IHM09M1 schematic: Arduino UNO R3/ST morpho connector

Bill of materials
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5 Bill of materials
Table 5: BOM part I
Item
Qty
Ref.
Part / value
Voltage / Watt
/ Ampere
Type /
technology
1
1
D1
red
LED standard -
SMD
2
1
J1
Stripline m. 1x3
3-way strip line-
male 2.54 mm
3
1
J2
ring
test point 1 mm
4
2
CN7,CN10
CONN 38
elevated socket
ST morpho
connector 38
pin (19x2)
5
2
CN6,CN9
CONN8
8 pin elevated
socket
6
1
CN5
CONN10
10 pin elevated
socket
7
1
J7
motor control
connector
34 way IDC
straight boxed
header
8
1
CN8
CONN6
6 pin elevated
socket
9
26
R1,R2,R3,R4,R5,R
6,R7,R8,R9,R10,R1
1,R12,R13,R15,R16
,R17,R18,R19,R20,
R21,R22,R23,R24,
R25,R27,R28
0 Ω
0.1 W
SMD resistor
10
1
R14
510 Ω
0.1 W
SMD resistor
11
1
R26
100 kΩ
½ W
trimmer resistor

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Table 6: BOM part II
Item
Tol.
Package
Manuf.
Manuf. order
code / order p/n
Notes
1
SMD 0603
Lite-on
LTST-C193KRKT-
5A
2
TH 2.54mm pitch
any
3
TH
Vero
Technologies
20-2137
4
TH 2.54mm pitch
Samtec
ESQ-119-24-T-D
alternative:4UCONN
08413 info:
ASSEMBLY ON TOP
5
TH 2.54mm pitch
Samtec
ESQ-108-24-T-S
alternative:4UCONN
15284
Mounting info:
Female on top, male
on bottom -NOT
MOUNTED
6
TH 2.54mm pitch
Samtec
ESQ-110-24-T-S
alternative:4UCONN
15286
Mounting info:
Female on top, male
on bottom -NOT
MOUNTED
7
TH
any
any
8
TH 2.54mm pitch
Samtec
ESQ-106-24-T-S
Alternative: 4UCONN
15282
Mounting info:
Female on top, male
on bottom -NOT
MOUNTED
9
0603
ANY
ANY
10
0603
ANY
ANY
11
10%
Bourns
3386G-1-104LF

Revision history
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Table 7: Document revision history
Date
Version
Changes
28-Oct-2015
1
Initial release.

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