Rohm STEPMO_EVK_20x User manual

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EUDC59-U-002 - Rev. 1.3
EVALUATION BOARD MANUAL
Motor Driver
Stepper Motor Driver IC EVK
STEPMO_EVK_20x
ROHM Stepper Motor Driver IC Evaluation Kit based on Arduino/Genuino Platform
●Abstract
This evaluation board manual describes the
usage of ROHM’s stepper motor driver IC
evaluation kit (EVK) called STEPMO_EVK_20x.
It is designed as a plug-in board (Shield) for
popular Arduino microcontroller platform. This
document provides guidelines to quickly setup
the hardware and software for fast and easy
stepper motor driver IC performance evaluation.
●Description of Supported ICs
This EVK supports a variety of pin-compatible
ROHM stepper motor driver ICs from standard,
microstep, low voltage and high voltage families
with CLK-IN (clock input) or PARA-IN (parallel
input) control. They integrate PWM
constant-current drive with adjustable decay ratio
and the ability for full, half and microstepping.
The ICs feature single supply operation by
integrating the voltage regulator for the low
power logic together with highly efficient DMOS
output power stages. These do not require an
internal charge pump so the motor drivers
achieve low EMI performance. The motor drivers
integrate various protection functions such as
Ghost Supply Prevention (GSP), Thermal
Shutdown (TSD), Over-Current Protection
(OCP), Under / Over Voltage Lockout (UVLO /
OVLO) high ESD resistance and Pin Short
Protection for robust and reliable operation. The
ICs are housed in compact HTSSOP-B28 power
packages. For further details, please also consult
the relevant product datasheets at
http://www.rohm.com.
●EVK Key Specifications (Across Model Versions)
Input voltage range…………………..……8~42V
Maximum Output Current Range..........1A~2.5A
Stepping Modes……………………. ,½,¼,⅛,
●EVK Features
Designed as plug-in Shield for Arduino platform
Recommended: Arduino Uno
Several model variants covering wide range of
pin- compatible stepper driver ICs
Support of bipolar or unipolar stepper motors
Adjustable current limit
Adjustable current decay mode
Single supply operation
Stackable design to allow controlling two motors
at the same time
Reverse power supply protection
Software library for Arduino IDE
Arduino example programs (Sketches)
Visit
http://www.rohm.com/web/eu/arduino-stepper-motor-shield
for details

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
Table of Contents
0. Cover Page...............................................................................................................................................................................1
●Abstract............................................................................................................................................................................. 1
●Description of Supported ICs............................................................................................................................................. 1
●EVK Key Specifications (Across Model Versions) ............................................................................................................. 1
●EVK Features.................................................................................................................................................................... 1
1. Safety Instructions.................................................................................................................................................................... 3
1.1 Warnings............................................................................................................................................................................... 3
1.2 Instructions for Safe Use....................................................................................................................................................... 3
2. Introduction............................................................................................................................................................................... 4
2.1 Block Diagram....................................................................................................................................................................... 4
2.2 Model Overview .................................................................................................................................................................... 5
3. Hardware Description............................................................................................................................................................... 5
3.1 Schematic ............................................................................................................................................................................. 6
3.2 Bill of Materials...................................................................................................................................................................... 8
4. Setup Instruction....................................................................................................................................................................... 9
4.1 Hardware .............................................................................................................................................................................. 9
●Master/Slave Mode............................................................................................................................................................ 9
●Current Limitation Value ...................................................................................................................................................11
●Current Decay Mode ....................................................................................................................................................... 12
●Supply and Motor Connection ......................................................................................................................................... 13
●Connection to Microcontroller Motherboard..................................................................................................................... 14
4.2 Software.............................................................................................................................................................................. 15
●Installation Procedure...................................................................................................................................................... 15
●Content of the Software Delivery Package...................................................................................................................... 16
●DEMO Sketch.................................................................................................................................................................. 16
●Library function description / FAQ.................................................................................................................................... 17

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
1. Safety Instructions
1.1 Warnings
This evaluation kit (EVK) should be operated in a well ventilated environment and, if used inside a case, the case should
not be covered.
This EVK should be placed on a stable, flat, non-conductive surface in use and should not be contacted by conductive
items.
All peripherals used with the EVK should comply with relevant standards for the country of use and be marked accordingly
to ensure that safety and performance requirements are met.
Where peripherals are connected that do not include the cable or connector, the cable or connector used must offer
adequate insulation and operation in order that the requirements of the relevant performance and safety are met.
The connection of incompatible devices to the EVK may affect compliance or result in damage to the unit and invalidate the
warranty.
1.2 Instructions for Safe Use
Do not expose the EVK to water, moisture or place on a conductive surface whilst in operation.
Do not expose the EVK to temperatures, which are out of the operational range specified for hardware and components
populating the EVK.
Take care whilst handling to avoid mechanical or electrical damage to the printed circuit board and components.
Avoid handling the printed circuit board while it is powered. Only handle by the edges to minimize the risk of electrostatic
discharge damage.
Do not short any outputs to each other, to the supply or to GND.
Do not reverse polarize the power supply connection.
Do not operate the EVK outside its specified ratings.
Take care to monitor the PCB and motor driver IC temperature when operating with high load currents and do not exceed
the absolute maximum ratings of all components.

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
2. Introduction
This evaluation board manual describes the usage of ROHM’s stepper motor driver IC evaluation kit (EVK) called
STEPMO_EVK_20x. The purpose of the EVK is to allow the test and evaluation of the stepper driver IC in professional research and
development environments. It is designed as a plug-in board (Shield) for popular Arduino microcontroller platform. This document
provides guidelines to quickly setup the hardware and software for fast and easy stepper motor driver IC performance evaluation.
For further details about the motor driver ICs and other ROHM products, please also consult the relevant product datasheets and
general information at http://www.rohm.com.
The EVK provided by ROHM consists of hardware and software. This document refers to hardware revision 1605.
Please check http://www.rohm.com/web/eu/arduino-stepper-motor-shield for downloading additional useful information such as
application notes, Gerber files, schematics, bill of materials, software libraries, example programs etc.
For operation of the EVK anArduino motherboard is required. For all tests and performance evaluation by ROHM the EVK has been
used together with an Arduino Uno R3 motherboard.
Arduino (also Genuino) is an open-source electronics microcontroller platform based on easy-to-use hardware and software.
The concept of Arduino includes a defined IO and Power pinning which allows the easy connection of daughter application boards
into the microcontroller mother board. These plug-in boards are also called Shields. The microcontroller programs created using the
Arduino IDE are called Sketches. For more information aboutArduino please visit https://www.arduino.cc/.
Of course, the EVK hardware can be operated with any other microcontroller platform if desired if this is preferred for evaluation of
the IC performance. For this case the required information about the necessary IO and power signals is also provided within this
document.
2.1 Block Diagram
A block diagram of the EVK hardware is depicted in Figure 1. The motor voltage applied to screw terminal J6 is also the supply for
the motor driver IC. For single supply operation a Buck regulator creates a 7V input voltage for the Arduino motherboard (Vin) which
again uses this voltage to create the logic supplies of 5V/3.3V. Therefore it is not necessary to power the microcontroller board
separately. The 5V created by the Arduino motherboard is used by the EVK to supply logic blocks and voltage levels to configure the
stepper motor driver IC.
The EVK is designed to be stackable to allow evaluating two stepper driver ICs at the same time. For this purpose the Jumper J1 is
used to configure the board from Master (default, used for the first Shield) and Slave (only used for a second stacked Shield). As
Slave the Buck Regulator is turned off with high impedance output because the Vin Voltage is already generated by the Master
Shield.
Based on the setting of J1 the control signals for the motor driver IC are routed via multiplexers to different Arduino IOs to allow
independent motor drive. The Master or Slave configuration is indicated by an LED (Master: green, Slave red).
The screw terminal J7/J8 allows the connection of a 4-wire bipolar or a 5-to-6-wire unipolar stepper motor.
Figure 1: EVK Shield Block Diagram

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
2.2 Model Overview
This stepper motor EVK has several different model variants. The main difference between the variants is the equipped ROHM
stepper motor driver IC. Table 1 gives an overview of the different IC features and the according naming of the EVK. The ID suffix “x”
of the EVK name STEPMO_EVK_20x denotes the model version. For further information about the ICs please follow the hyperlinks
to the datasheets on ROHM’s global web site.
ID
ROHM Motor
Driver IC
Supply Voltage
/ V
Max. Current per
Phase / A
Supported Step
Modes
Control Type
x
Min
Max
25°C
1
BD63510AEFV1
8
28
1.0
,½,¼,
CLK-IN
2
BD63520AEFV1
8
28
2.0 2
,½,¼,
CLK-IN
3
BD63524AEFV1
8
28
2.5 2
,½,¼,⅛
CLK-IN
4
BD63710AEFV
19
28
1.0
,½(A),½(B),¼
CLK-IN
5
BD63715AEFV
19
28
1.5
,½(A),½(B),¼
CLK-IN
6
BD63720AEFV
19
28
2.0 2
,½(A),½(B),¼
CLK-IN
7
BD63843EFV
19
28
1.0
,½,⅛,
CLK-IN
8
BD63847EFV
19
28
2.0 2
,½,⅛,
CLK-IN
9
BD63873EFV
19
28
1.0
,½(A),½(B),¼
CLK-IN
A
BD63875EFV
19
28
1.5
,½(A),½(B),¼
CLK-IN
B
Reserved
C
BD63872EFV
19
28
1.0
,½(A),½(B),¼
PARALLEL-IN
D
Reserved
E
BD63876EFV
19
28
2.0 2
,½(A),½(B),¼
PARALLEL-IN
F
BD6425EFV
19
42
1.5
,½(A),½(B),¼
CLK-IN
Note 1: In development.
Note 2: Will require additional heat sinking or cooling techniques to achieve the maximum current continuously.
Table 1: EVK Model Variants
3. Hardware Description
The schematic of the EVK is shown in Figure 2 and Figure 3 and the Bill-of-Materials (BOM) is summarized in Table 2. Please note
that the depicted schematics and BOM refer to model version 2 of the EVK. The other model versions differ in some details while the
major differences are the in assembled motor driver IC part number (see Table 1) and the different current sense resistor values. For
schematics and BOMs of all available model versions please visit http://www.rohm.com/web/eu/arduino-stepper-motor-shield.
Main part of the EVK is the ROHM stepper motor driver labelled IC4. Q2, R20 and Z3 form a reverse power supply protection. Z2 is a
TVS diode to protect against transient surge voltages. Supply decoupling and filtering is accomplished by C13, L2, and C6-C9.
Voltage dividers R9-R11 and R6, R19, R7 set the necessary voltage levels for VREF and MTH. Test pins are connected to GND via
0Ω-resistors.
The PWM frequency is set by C10 and R8 to the standard value as suggested in the IC datasheet. The resulting chopping frequency
is ~ 25 kHz. For fine tuning the stepper motor performance it is usually recommended to find the optimum frequency as a trade-off
between motor noise and current waveform distortion. Thus, if desired, the values of C10 and R8 could be changed by the user by
soldering different components. Please refer to the IC datasheet for recommended values.
D2 is an instance of ROHM’s ultra-compact PICOLEDTM-Duo two-color type LED indicating Master/Slave mode. It is switched by Q1
and controlled by Jumper J1.
J5 is the defined Arduino compatible set of header rows for IOs and power.
IC1 and IC2 are ROHM BU4551 parts which contain 4 times a 2:1 multiplexer each. They are required to route the correct control
signals to the motor driver IC depending on the setting of Jumper J1.
IC3 is ROHM’s BD9G101G wide input range DC/DC step-down regulator which integrates a high-side power MOSFET into its small
SOT-23 package while able to provide up to 0.5A DC output. It is used together with adjacent circuitry to create the 7V input voltage
to the Arduino with a high efficiency.

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
3.1 Schematic
Figure 2: EVK Schematic –STEPMO_EVK_20x –Page 1
CLK,CW_CCW,ENABLE,MODE[0-1],PS,I11
A[6.0]
CLK CW_CCW ENABLE MODE0 MODE1
PS
I11
VREF
+VM_PIN
Z3
EDZ4.7B
C7
100nF
C9
100nF
3
J2
J4
L2
2.2u
C6
100u
C8
100u
C13
100u
C10
C16
n.m.
C17
n.m.
1 2
J6
1 2
J7
J8
D
G
S
Q2
RSD131P10
R20
R9
68k
R10 R11 R12
n.c.
R13
R8
R19 R6 R7
R4R5
1
3
2
4
D2
R14
470
R15
470
1 3
2
4
5
6
Nch Pch
D S
G
G
S D
Q1
TVS
Z2
L3
n.m. L4
n.m.
L5
n.m. L6
n.m.
C11
n.m.
C14
n.m.
C15
n.m.
C18
n.m.
1
5 8
4 6 7 2 3 9 10 11 12 13 14 15
16 17 18
19
20 21
22
23 24 25 26 27 28
GND OUT1B RNF1 RNF1S OUT1A NC VCC1 NC GND CR TEST0/NC MTH VREF PS
NC
OUT2B
RNF2
RNF2S
OUT2A
NC
VCC2
NC
IC4
STEPMO_EVK_20x
5/20/2016
Page1
COMPANY:
DESIGN TITLE:
AUTHOR:
PAGE:
DRAWING NO.REVISION:
CHECKED: ISSUED:SCALE:SIZE:
SHEET OF
IF IN DOUBT ASK
mm
ORIGINAL A3
DIMENSIONS:
NTS
REVISION: ISSUE/DATE:NOTE: DESCRIPTION:
1 2 3 4
A
B C
D
E F
56
A
B C
D
E
F
1 2 3 4 56
T. Leineweber 2
1
4:24:52 PMSTEPMO_EVK_20x_1605
ROHM Semiconductor GmbH
1605

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
Figure 3: EVK Schematic –STEPMO_EVK_20x –Page 2
PS
ENABLE
MODE1 MODE0
I11
CW_CCW
CLK
CLK,CW_CCW,ENABLE,MODE[0-1],PS,I11
A[6.0]
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
BU4551
W1 X0 X1 X Y Y0 VEE VSS CONTROL
Y1
Z0 Z1
Z
W
W0
VDD
IC1
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
BU4551
W1 X0 X1 X Y Y0 VEE VSS CONTROL
Y1
Z0 Z1
Z
W
W0
VDD
IC2
1
4 6
2 3
5
BD9G101G
BST GND FB
Lx
VCC
EN
IC3 L1
5.6u
D1
RB060M-60
C1
4.7uF
C4
4.7uF
C2
10uF
C3
10nF
C12
10nF
C5
15nF
Z1
EDZ4.7B
J1
8 9 10 11 12 13
GND AREF SDA SCL
SS MOSI MISO SCK SPI
I2C
DIGITAL PWM
RX<-0
TX<-1
INTERRUPT 0
DIGITALPWM
2
INTERRUPT 1
3 4 5 6 7
IOREF
RESET
3.3V
POWER
5V
GND GND
Vin
ANALOG
A0 A1 A2 A3
SCL
I2C
A4
SDA
A5
ARDUINOONECONNECTOR
J5
R3
R21 R22
R1
43k
R2
5.1k
D3
RB551VM-30
STEPMO_EVK_20x
5/20/2016
Page2
COMPANY:
DESIGN TITLE:
AUTHOR:
PAGE:
DRAWING NO.REVISION:
CHECKED: ISSUED:SCALE:SIZE:
SHEET OF
IF IN DOUBT ASK
mm
ORIGINAL A3
DIMENSIONS:
NTS
REVISION: ISSUE/DATE:NOTE: DESCRIPTION:
1 2 3 4
A
B C
D
E F
56
A
B C
D
E
F
1 2 3 4 56
T. Leineweber 2
2
4:24:52 PMSTEPMO_EVK_20x_1605
ROHM Semiconductor GmbH
1605

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
The schematic of the EVK is plotted in Figure 2 and Figure 3. Component values valid for all model versions are annotated, for all
other values please refer to the BOM of each model version available at http://www.rohm.com/web/eu/arduino-stepper-motor-shield.
3.2 Bill of Materials
The bill of materials is given Table 2 as example for model version 2.
For all other model version BOMs please refer to http://www.rohm.com/web/eu/arduino-stepper-motor-shield.
Component Name
Value
Description
Supplier
Part number
Qty
C1, C4
4.7u
Cer Cap 22uF 20% 16V X7R 1210
TDK
C3225X7R1H475K250AB
2
C2
10u
Cer Cap 22uF 20% 16V X7R 1210
TDK
C3225X7R1H106M250AC
1
C3, C12
10n
Cer Cap 10nF 10% 25V X7R 0603
TDK
C1608X7R1E103K080AA
2
C5
15n
Cer Cap 15nF 20% 50V X7R 0603
TDK
C1608X7R1H153M080AA
1
C6, C8
100u
100uF 20% 63V Electrolyte Capacitor 8mm x 11.5mm
Nichicon
UVY1J101MPD
2
C7, C9
100n
Ceramic capacitor 100nF 10% 50V X7R 0805 Wurth
Wurth
885012207098
2
C10
1n
Ceramic capacitor 1nF 20% 50V X7R 0402
TDK
C1005X7R1H102M050BA
1
C13
100u
100uF 20% 100V Electrolyte Cap. 10mm x 16mm
Nichicon
UVK2A101MPD
1
C11, C14, C15,
C16, C17, C18
n.m.
Ceramic capacitor, not mounted
6
D1
Schottky Diode 2A 60V
ROHM
RB060M-60
1
D2
PICOLEDTM-Duo two-color type LED (green + red) in
1 package
ROHM
SML-P24MUWT86
1
D3
Schottky Diode 0.5A 20V
ROHM
RB551VM-30
1
IC1, IC2
Quad 2ch Analog Multiplexer/Demultiplexer
ROHM
BU4551BFV-E2
2
IC3
Wide Input Range DCDC Regulator
ROHM
BD9G101G-TR
1
IC4
Stepper Motor Driver
ROHM
BD63520AEFV-E2
1
J1
Jumper 2 Way
FCI
77311-118-02LF
1
J2
Jumper 3 Way
FCI
77311-118-03LF
1
J4
ARDUINO Stackable Header 6pin 14mm5 height
Arduino
A000084
0.5
J5 C
ARDUINO Stackable Header 6pin 14mm5 height
Arduino
A000084
0.5
J5 A, J5 D
ARDUINO Stackable Header 8pin 14mm5 height
Arduino
A000085
1
J5 B
ARDUINO Stackable Header 10pin 14mm5 height
Arduino
A000086
0.5
J6, J7
Connector Screw 5mm pitch
Wurth
691102710002
2
J8
Connector Screw 5mm pitch
Wurth
691102710003
1
L1
5.6u
5.6µH 2.8A 81mOhm Shielded 20% Tolerance
Wurth
74438356056
1
L2
2.2u
2.2µH 3A 84mOhm Shielded 20% Tolerance
Toko
DFE252012P-2R2M=P2
1
L3, L4, L5, L6
n.m.
Shorted on board, no need to assemble
4
Q1
Nch+Pch MOSFET
ROHM
US6M2TR
1
Q2
Pch MOSFET, 100V, 13A
ROHM
RSD131P10TL
1
R1
43k
Resistor 43kOhm 1% 1/16W
ROHM
MCR01MZPF4302
1
R2
5.1k
Resistor 5.1kOhm 1% 1/16W
ROHM
MCR01MZPF5101
1
R3, R20
3.9k
Resistor 3.9kOhm 1% 0.5W
ROHM
MCR50JZHF3901
2
R4, R5
0.1
Resistor 0.1Ohm 1% 0.5W
ROHM
MCR50JZHFLR100
2
R6
62k
Resistor 62kOhm 1% 1/16W
ROHM
MCR01MZPF6202
1
R7
1.8k
Resistor 1.8kOhm 1% 1/16W
ROHM
MCR01MZPF1801
1
R8
39k
Resistor 39kOhm 1% 1/16W
ROHM
MCR01MZPF3902
1
R9
68k
Resistor 68kOhm 1% 1/16W
ROHM
MCR01MZPF6802
1
R10
12k
Resistor 12kOhm 1% 1/16W
ROHM
MCR01MZPF1202
1
R11
56k
Resistor 56kOhm 1% 1/16W
ROHM
MCR01MZPF5602
1
R12, R22
n.m.
open
2
R13, R21
0
Resistor short, 50m Ohm max, 0.5A max.
ROHM
MCR01MZPJ000
2
R14, R15
470
Resistor 470 Ohm 1% 1/16W
ROHM
MCR01MZPF4700
2
R19
20k
Bourns
3362P-1-203LF
1
TP0, TP1
n.m.
2
Z1, Z3
ZENER DIODE 4.7V 150mW
ROHM
EDZTE614.7B
2
Z2
TVS DIODE
Fairchild
Semiconductor
SMCJ26A
1
Table 2: EVK Bill of Materials –STEPMO_EVK_202

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STEPMO_EVK_20x
Evaluation Board Manual
EUDC59-U-002 - Rev. 1.3
4. Setup Instruction
4.1 Hardware
●Master/Slave Mode
This section describes how to set up the Shield in Master or Slave mode. This selection is made by Jumper J1. In most of the
configurations (default) the Jumper J1 is simply left open and the Shield is configured as Master. Jumper J1 needs only to be in
closed position when the Shield is stacked as a Slave Board on a Master Board for operation of two Shields with a single Arduino
microcontroller. The Arduino microcontroller (and optional Slave Shield) will be powered by the Master Shield.
Note:
For the electrical operation the physical order of Master and Slave Shield actually does not matter.
Do not change the setting of J1 while the power supply is applied.
Master Board (Default)
Jumper J1 is open:
Buck regulator supply (7V) is enabled to generate VIN for Arduino
Green 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
A1
PS1
IC1_X1
IC1_X
PS
14
PS
3
ENABLE1
IC1_Y1
IC1_Y
ENABLE
20
ENABLE
7
MODE11
IC1_W1
IC1_W
MODE1
19
MODE1
6
MODE01
IC1_Z1
IC1_Z
MODE0
18
MODE0
13
CW_CCW1
IC2_Y1
IC2_Y
CW_CCW
16
CW_CCW
10
CLK1
IC2_W1
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
A1
PS1
IC1_X1
IC1_X
PS
14
PS
3
ENABLE1
IC1_Y1
IC1_Y
ENABLE
20
I12
7
MODE11
IC1_W1
IC1_W
MODE1
19
I02
6
MODE01
IC1_Z1
IC1_Z
MODE0
18
PHASE2
11
TEST11
IC2_X1
IC2_X
TEST1
17
I11
13
CW_CCW1
IC2_Y1
IC2_Y
CW_CCW
16
I01
10
CLK1
IC2_W1
IC2_W
CLK
15
PHASE1
Table 3: Mapping of Arduino IOs to the motor driver IC pins (Master Shield)

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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.