ST UM2082, User Manual, Page: 10 / 14

Hardware description and configuration UM2082
10/14 DocID029504 Rev 1
Table 3: J1 connector, switches and test point descriptions
Name Pin Label Description
J1
5 - 6 Vin - GND Motor power supply
1 - 4 A+, A-, B+, B- Motor phases connection
S1, S2, S3, S4 - MODE1, 2, 3, 4 Step mode selection (stand-alone operation)
TP1 - GND Ground
TP2 - VIN Motor power supply
TP3 - VDD
Digital power supply (by default 3.3 V coming
from STM32 Nucleo board)
TP4 - CLK Step clock line
3.1 Selecting direction and step clock lines
The direction and the step clock lines of STSPIN220 can be selected through dedicated
resistors indicated in the following tables.
Table 4: Direction selection
Signal R19 R20 Connector Remarks
DIR1
330 Ω
Not mounted CN9 pin8 Default
DIR2 Not mounted
330 Ω
CN9 pin5
Table 5: Step clock selection
Signal R17 R18 Connector Remarks
PWM1
330 Ω
Not mounted CN9 pin4 Default
PWM2 Not mounted
330 Ω
CN9 pin6
Ensure that these signals are used by all the stacked X-NUCLEO-IHM06A1
boards