ST X-NUCLEO-IHM12A1 User manual

October 2016
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www.st.com
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User manual
Getting started with the X-NUCLEO-IHM12A1 low voltage dual brush
DC motor driver expansion based on STSPIN240 for STM32 Nucleo
Introduction
The X-NUCLEO-IHM12A1 is a low voltage dual brush DC motor driver expansion board based on the
STSPIN240 for STM32 Nucleo.
It provides an affordable and easy-to-use solution for the implementation of portable motor driving
applications such as thermal printers, robotics and toys.
Thanks to its programmable current limiter and complete set of protection features, it offers high levels
of performance and robustness.
The X-NUCLEO-IHM12A1 is compatible with the Arduino UNO R3 connector and most STM32 Nucleo
boards.
Figure 1: X-NUCLEO-IHM12A1 expansion board for STM32 Nucleo

Contents
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Contents
1Hardware and software requirements............................................5
2Getting started.................................................................................6
3Hardware description and configuration.......................................7
3.1 Selecting the STM32 Nucleo board...................................................8
3.2 Selecting reference voltage...............................................................8
4Bill of materials..............................................................................10
5Schematic diagram........................................................................12
6Revision history ............................................................................13

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List of tables
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List of tables
Table 1: Arduino UNO R3 connector table.................................................................................................7
Table 2: ST morpho connector table ..........................................................................................................8
Table 3: J1 connector, switches and test points.........................................................................................8
Table 4: Reference voltage selection .........................................................................................................9
Table 5: Document revision history ..........................................................................................................13

List of figures
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List of figures
Figure 1: X-NUCLEO-IHM12A1 expansion board for STM32 Nucleo........................................................1
Figure 2: X-NUCLEO-IHM02A1 switch and connectors positions..............................................................7
Figure 3: X-NUCLEO-IHM12A1 circuit schematic....................................................................................12

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Hardware and software requirements
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1 Hardware and software requirements
The main features of the X-NUCLEO-IHM12A1 expansion board are:
Low voltage range from 1.8 V to 10 V
Current up to 1.3 A r.m.s
Current control with adjustable off-time
Full protection overcurrent and short-circuit protection
Low RDS(ON) power stage (HS + LS = 0.4 Ω typ.)
Thermal shutdown
Compatible with Arduino UNO R3 connector
Compatible with STM32 Nucleo boards
Connection for two independent DC motors
RoHS compliant
To use the STM32 Nucleo development boards with the X-NUCLEO-IHM12A1 expansion
board, the following software and hardware specifications are required:
an STM32 Nucleo development board (NUCLEO-F401RE, NUCLEO-F334R8,
NUCLEO-F030R8 or NUCLEO-L053R8)
an X-NUCLEO-IHM12A1 expansion board
the X-CUBE-SPN12 software package (available on www.st.com)
a PC/Laptop with Microsoft Windows (7 and above) to install the software package (X-
CUBE-SPN12)
a type A USB to mini-B USB cable to connect the STM32 Nucleo board to the
PC/Laptop
an IDE chosen from among IAR Embedded Workbench for ARM (EWARM), Keil
microcontroller development kit (MDK-ARM) and system workbench for STM32
Nucleo project
up to two dual brush DC motors with compatible voltage and current ratings for the
STSPIN240 driver
an external power supply or external battery able to provide the right voltage for the
DC motor used.

Getting started
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2 Getting started
The X-NUCLEO-IHM12A1 expansion board is a low voltage dual brush DC motor driver
covering a wide range of applications.
The maximum ratings of the expansion board are:
Power stage supply voltage (VS) from 1.8 V to 10 V
Motor phase current up to 1.3 A rms.
To start your project with the expansion board:
1. Check the jumper position based on your configuration.
2. Connect the X-NUCLEO-IHM12A1 to the STM32 Nucleo board through Arduino UNO
R3 Connectors (CN5, CN6, CN8 and CN9).
3. Supply the board through the input 5 (Vin) and 6 (GND) of the connector J1. The D5
(red) LED will turn on.
4. Develop your application using the examples provided with the firmware library (X-
CUBE-SPN12).
Visit www.st.com for supporting material regarding the STSPIN240 Low voltage dual brush
DC motor driver and www.st.com/stm32nucleo.

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Hardware description and configuration
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3 Hardware description and configuration
Figure 2: X-NUCLEO-IHM02A1 switch and connectors positions
Table 1: Arduino UNO R3 connector table
Connector
Pin(1)
Signal
Remarks
CN5
1
REF
See Section 3.2: "Selecting reference voltage"
2
RESET
7
Ground
CN9
3
ENABLE
5
PWMB
6
PWMA
7
PHA
8
PHB
2
VDD
CN6
6
Ground
7
Ground
CN5
1
REF
See Section 3.2: "Selecting reference voltage"
Notes:
(1)All the non-listed pins are not connected

Hardware description and configuration
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Table 2: ST morpho connector table
Connector
Pin(1)
Signal
Remarks
CN10
9
Ground
19
RESET
21
REF
See Section 3.2: "Selecting reference voltage"
23
PHB
25
PHA
27
PWMA
29
PWMB
33
ENABLE
CN7
12
VDD
20
Ground
22
Ground
28
REF
See Section 3.2: "Selecting reference voltage"
Notes:
(1)All the non-listed pins are not connected
Table 3: J1 connector, switches and test points
Name
Pin
Label
Description
J1
5 - 6
Vin - GND
Motor power supply
1 - 2
B+, B-
Motor B phases connection
3 - 4
A+, A-
Motor A phases connection
TP1
-
GND
Ground
TP2
-
VIN
Motor power supply
TP3
-
VDD
Digital power supply (by default 3.3 V coming from STM32
Nucleo board)
3.1 Selecting the STM32 Nucleo board
The X-NUCLEO-IHM12A1 expansion board offers native support for the following STM32
Nucleo development boards:
NUCLEO-F401RE
NUCLEO-F334R8
NUCLEO-F030R8
NUCLEO-L053R8
3.2 Selecting reference voltage
The reference voltage for the current limiter circuitry of the STSPIN240 can be selected
through dedicated resistors shown below.

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Hardware description and configuration
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Table 4: Reference voltage selection
Signal
R22
R23
Connector
Remarks
REF
200 kΩ
Not mounted
CN8 pin1
Default
NUCLEO-F401RE or
NUCLEO-F334R8 or
NUCLEO-L053R8
REF
Not mounted
200 kΩ
CN5 pin1
NUCLEO-F030R8
These signals must be used by all expansion boards stacked on the X-NUCLEO-
IHM12A1.

Bill of materials
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4 Bill of materials
Item
Q.ty
Reference
Value
Description
Part number
Manufacturer
1
1
CN5
SSQ-110-04-
F-S
HEADER
SSQ-110-04-F-S
SAMTEC
2
2
CN6,CN9
SSQ-108-04-
F-S
HEADER
SSQ-108-04-F-S
SAMTEC
3
2
CN7,CN10
NP
HEADER
ESQ-119-24-G-D
SAMTEC
4
1
CN8
SSQ-106-04-
F-S
HEADER
SSQ-106-04-F-S
SAMTEC
5
1
C1
3.3nF, 50V,
±15%
CER, 603
3.3NF_50V_X7R_0603
N.A.
6
1
C2
2.2µF, 16V,
±20%
CER, 603
2.2UF_16V_X5R_0603
N.A.
7
1
C3
NP, 16V,
±20%
ALU,
D5_H11_P2
860010372002
WURTH
ELECTRONIK
8
1
C4
22µF, 16V,
±20%
ALU,
L4.5_W4.5
865080340003
WURTH
ELECTRONIK
9
1
C5
1nF, 50V,
±15%
CER, 603
1NF_50V_X5R_0603
N.A.
10
1
C6
10nF, 50V,
±15%
CER, 603
10NF_50V_X7R_0603
N.A.
11
1
C7
22nF, 50V,
±5%
CER, 603
22NF_50V_X7R_0603
N.A.
12
1
C8
2.2nF, 50V,
±15%
CER, 603
2.2NF_50V_X7R_0603
N.A.
13
4
D1,D2,D3,D4
YELLOW
LED, 805
150080YS75000
WURTH
ELEKTRONIK
14
1
D5
RED
LED, 805
150080RS75000
WURTH
ELEKTRONIK
15
1
J1
691241510006
SCREW
691241510006
WURTH
ELEKTRONIK
16
3
M1,M2,M3
OPTICAL_TA
RGET
OPTICAL_T
ARGET
OPTICAL_TARGET
N.A.
17
1
R1
0R, 1/8W, ±5%
RES, 805
0R_5%_0805
N.A.
18
2
R2,R23
NP
RES, 603
R_NP_0603
N.A.
19
1
R3
18kΩ, 1/10W,
±5%
RES, 603
18K_5%_0603
N.A.
20
1
R4
39kΩ, 1/10W,
±5%
RES, 603
39K_5%_0603
N.A.
21
6
R5,R16,R17,R18,
R19,R20
330Ω, 1/10W,
±5%
RES, 603
330R_5%_0603
N.A.
22
4
R6,R7,R8,R9
0R68, 1/3W,
±1%
RES, 805
0R68_1%_0805_0.33W
N.A.

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Bill of materials
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Item
Q.ty
Reference
Value
Description
Part number
Manufacturer
23
2
R10,R21
47kΩ, 1/10W,
±5%
RES, 603
47K_5%_0603
N.A.
24
1
R11
1kΩ, 1/10W,
±5%
RES, 603
1K_5%_0603
N.A.
25
4
R12,R13,R14,R15
2.2kΩ, 1/8W,
±5%
RES, 805
2.2K_5%_0805
N.A.
26
1
R22
200kΩ, 1/10W,
±1%
RES, 603
200K_1%_0603
N.A.
27
3
TP1,TP2,TP3
S1751-46R
TEST POINT
S1751-46R
HARWIN
28
1
U1
STSPIN240
DRIVER,
QFN16
STSPIN240
ST
29
1
U2
SN74LVC1G1
25DCKR
LOGIC,
SOT353
SN74LVC1G125DCKR
TI

Schematic diagram
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5 Schematic diagram
Figure 3: X-NUCLEO-IHM12A1 circuit schematic

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Revision history
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6 Revision history
Table 5: Document revision history
Date
Version
Changes
04-Oct-2016
1
Initial release.

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