Rohm STEPMO_EVK_20x, Manual

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STEPMO_EVK_20x Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
Slave Board (for a stacked Shield)
Jumper J1 is
closed :

Buck regulator supply (7V) is disabled with high impedance output. VIN is delivered by Master Shield.

Red LED of D2 is lit

Arduino IO mapping according to the following table
ALL Model EVK Versions except C, E
ARDUINO IO Schematic MUX Routing Between Signal Motor Driver IC Pin
No. Net Name Pin Pin Name No. Name
A0 PS0 IC1_X0 IC1_X PS 14 PS
2 ENABLE0 IC1_Y0 IC1_Y ENABLE 20 ENABLE
4 MODE10 IC1_W0 IC1_W MODE1 19 MODE1
5 MODE00 IC1_Z0 IC1_Z MODE0 18 MODE0
12 CW_CCW0 IC2_Y0 IC2_Y CW_CCW 16 CW_CCW
9 CLK0 IC2_W0 IC2_W CLK 15 CLK
Model EVK Versions C, E
ARDUINO IO Schematic MUX Routing Between Signal Motor Driver IC Pin
No. Net Name Pin Pin Name No. Name
A0 PS0 IC1_X0 IC1_X PS 14 PS
2 ENABLE0 IC1_Y0 IC1_Y ENABLE 20 I12
4 MODE10 IC1_W0 IC1_W MODE1 19 I02
5 MODE00 IC1_Z0 IC1_Z MODE0 18 PHASE2
8 TEST10 IC2_X0 IC2_X TEST1 17 I11
12 CW_CCW0 IC2_Y0 IC2_Y CW_CCW 16 I01
9 CLK0 IC2_W0 IC2_W CLK 15 PHASE1
Table 4: Mapping of Arduino IOs to the motor driver IC pins (Slave Shield)
Note:

In case a stacked Slave Shield is not used the IOs listed in Table 4 are free to use and can be accessed on the
corresponding EVK pin header. However, the additional capacitive load of ~10pF by the turned-off multiplexer path
should be considered in this case.