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Hardware description
and configuration
UM2112
8/14
DocID029794 Rev 1
Table 2: ST morpho connector table
Connector
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.