Rohm BD63800MUF-EVK-002 User manual

1/24
© 2017 ROHM Co., Ltd.
No. 60AP001E Rev.001
2017.4
User’s Guide
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
Automotive Power and Motor Drive
Evaluation Kit for Stepping Motor Driver
BD63800MUF-EVK-002
The ROHM BD63800MUF-C is an AEC-Q100 automotive qualified bipolar low-consumption stepping motor driver that is driven by
PWM current. It is suitable for Automotive applications such as Head-up Display, LED Headlight, Heat pump and Intake Air Control
Valve. This EVK enables the performance evaluation of this IC in research and development laboratories.
● Description
BD63800MUF-EVK-002 is an evaluation board for the
Automotive Stepping Motor Driver IC. Also, a GUI can be
provided by ROHM for easy SPI register configuration.
The key component of the evaluation board is the ROHM
BD63800MUF-C which have the following specifications and
features:
●BD63800MUF-C Key Specifications:
Supply voltage range…………………….…6.0 to 28 V
Output Current Rating (peak) …..………………1.35 A
Output Current Rating (DC) …..………….........1.20 A
Output On Resistance (up and down) .............0.75 Ω
VCC quiescent supply current (max) …………..10 µA
BD63800MUF-C operates with single power supply which can
simplify the set design.
●BD63800MUF-C Features:
CLK-IN and SPI-IN Drive mode
Supported Modes:
Full step, 1/2, 1/4, 1/8, 1/16 and 1/32 step
Current Decay Mode Switch Function
- Mix Decay: Linear Adjustment of
Slow Decay / Fast Decay Ratio
- Auto Decay: Automatic Switch of
Slow Decay / Fast Decay
Further features and protections are referred to the datasheet.
Figure 1: BD63800MUF-EVK-002
●EVK Features
Plug & Play Stepping Motor Evaluation Kit
Graphical User Interface application software
Easy to set/read register.
[Operating System: Windows10]
External Switches for pin setting.
Open or High settings
Test pins for easy signal monitoring

2/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
Contents
1Introduction..............................................................................................................................................3
2Safety Instructions .....................................................................................................................................4
2.1 Warnings ...........................................................................................................................................4
2.2 Instructions for Safe Use........................................................................................................................4
3Hardware Description..................................................................................................................................5
3.1 Schematic..........................................................................................................................................5
3.2 PCB Layout and Component Placement.....................................................................................................6
3.3 Bill of Materials....................................................................................................................................9
4Operating Instructions...............................................................................................................................10
4.1 Hardware.........................................................................................................................................10
4.2 Software..........................................................................................................................................12
4.2.1 BD63800MUF-C GUI Overview 1 ................................................................................................13
4.2.2 BD63800MUF-C GUI Overview 2 ................................................................................................13
4.2.3 Rotation Direction Setting .........................................................................................................14
4.2.4 Run/Hold Setting.....................................................................................................................14
4.2.5 Motor Enable Setting................................................................................................................15
4.2.6 UV Hold setting .......................................................................................................................15
4.2.7 Output Electric Current Setting(Hold mode) .................................................................................16
4.2.8 Output Electric Current Setting(Run mode)..................................................................................16
4.2.9 Output Slew Rate Setting..........................................................................................................17
4.2.10 Excitation Mode Setting ............................................................................................................17
4.2.11 Clock Input Setting ..................................................................................................................18
4.2.12 Under Voltage Protection Setting................................................................................................18
4.2.13 Thermal Warning Setting ..........................................................................................................19
4.2.14 Stall Detect Threshold Setting....................................................................................................19
4.2.15 Stall Detect Rotation Speed Setting ............................................................................................20
4.2.16 Stall Detect Hysteresis Setting ...................................................................................................20
4.2.17 Stall Detect Counter Setting ......................................................................................................21
4.2.18 BEMF Gain Setting ...................................................................................................................21
4.2.19 Control Register Map................................................................................................................22
4.2.20 DIAG Selection(DIAG1).............................................................................................................22
4.2.21 DIAG Selection(DIAG2).............................................................................................................23
4.2.22 Status Register........................................................................................................................23

3/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
1 Introduction
This evaluation kit (EVK) manual describes the usage of ROHM’s BD63800MUF-EVK-002. The purpose of the EVK is to allow the
test and evaluation of the stepping motor driver IC BD63800MUF-C in professional research and development environments. This
document provides guidelines to quickly setup the hardware and software for fast and easy stepping motor driver IC performance
evaluation.
BD63800MUF-C evaluation board [BD63800MUF-EVK-002]
USB cable (USB2.0 A Plug to C Plug)
BD63800MUF-C GUI control software (MS Windows)
USB Driver
For operation of the EVK the following additional items will be required:
PC with operating system Windows 10 or higher
Laboratory DC power supplies: 12 V(typ.)/1.5 A(min.) and 5 V/100 mA(min.)
Load (e.g. Bipolar DC step motor)
Connecting cables between DC power supply and boards
Clock generator: Input 5 V to 0 V clock signal for CLK pin
Figure 2 shows the setup boards and instruments as mentioned above. Detailed information for connection is described on section
4.1[Hardware]. For receiving the BD63800MUF-C GUI control software please get in touch with your local ROHM sales office or use
the general ROHM customer support system.
Figure 2: BD63800MUF-EVK-002 Evaluation Setup.
USB Cable
A Plug to C Plug

4/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
2 Safety Instructions
2.1 Warnings
This evaluation kit must only be operated by trained professionals.
This evaluation kit should be operated in a well ventilated environment and, if used inside a case, the case should not
be covered.
This evaluation kit 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 evaluation kit 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 evaluation kit may affect compliance or result in damage to the unit and
invalidate the warranty.
2.2 Instructions for Safe Use
Do not expose the evaluation kit to water, moisture or place on a conductive surface whilst in operation.
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 operate the evaluation kit outside its specified ratings.
Take care to monitor the PCB and IC temperatures in particular when operating with high power loads and do not
exceed the absolute maximum ratings of all components.

5/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
3 Hardware Description
3.1 Schematic
Figure 3: Evaluation Board Schematic

6/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
3.2 PCB Layout and Component Placement
Please note that the layout of this EVK is not optimized in terms of thermal performance or signal routing.
The focus is more on enabling easy test by adding test points to each signal. All pictures are viewed as seen from TOP side.
Figure 4: TOP side PCB with Pads and Silkscreen
Figure 5: Bottom side with Pads and Silkscreen

7/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
Figure 6: Top layer
Figure 7: 2nd layer

8/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
Figure 8: 3rd layer
Figure 9: Bottom layer

9/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
3.3 Bill of Materials
Comp. Name
Value
Type
Quantity
For BD63800MUF-C
C0
1 nF
Capacitor, Surface Mount/Through Hole
1
C1
100 µF
Capacitor, Through Hole
1
C2
100 nF
Capacitor, Surface Mount/Through Hole
1
C3
0.1 µF
Capacitor, Surface Mount/Through Hole
1
CN1
1 row x 4 pin Connector
2.54mm pitch, 1.0mm Hole
1
R0
39 kΩ
Resistor, Surface Mount
1
R1
6.2 kΩ
Resistor, Surface Mount
1
R4, R5
10 kΩ
Resistor, Surface Mount/Through Hole
2
R2, R3
Open
Resistor, Surface Mount
2
S1, S2, S3, S4, S5,
S6, S7, S8, S9
SPDT switch
2.54mm pitch, 1.0mm Hole
9
U1
BD63800MUF-C
IC for Stepper Motor Driver
VQFN32FBV050
1
For Microcontroller
C4, C5, C7, C8, C9, C10,
C11, C12, C13, C17, C18,
C20
0.1 µF
Capacitor, Surface Mount
12
C6
10 µF
Capacitor, Surface Mount
1
C14, C15
22 pF
Capacitor, Surface Mount
2
C16, C22
1 µF
Capacitor, Surface Mount
2
C19, C21
2.2 µF
Capacitor, Surface Mount
2
C23
10 µF
Capacitor, Surface Mount
1
CN2
2 row x 10 pin Connector
2.54mm pitch, 1.0mm Hole
1
D1, D2, D3
7.5V
Zener diode, Surface Mount
3
L1, L2
31 Ω
Ferrite bead, Surface Mount
2
R10, R13, R14
10 kΩ
Resistor, Surface Mount
3
R6, R8, R9, R11, R12
100 kΩ
Resistor, Surface Mount
5
R15, R16, R17, R18, R19,
R20, R21, R22
22 Ω
Resistor, Surface Mount
8
U2
CY7C68013A-56PVXC
IC MCU USB PERIPH HI SPD 56SSOP
1
U3
24LC64F-I/SN
IC EEPROM 64KBIT I2C 8SOIC
1
U4
74LVC4T3144PW-Q10J
IC BUF NON-INVERT 5.5V
14TSSOPLINEAR 3.3V 500MA 8SOIC
1
U5
TPS77533D
IC REG LINEAR 3.3V 500MA 8SOIC
1
X1
ECS-240-20-23A-EN-TR
CRYSTAL 24.0000MHZ 20PF SMD
1
Table 1: Evaluation Board Bill of Materials

10/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4 Operating Instructions
4.1 Hardware
Before start to connect, make sure to turn off all equipment for your safety.
Connect the cables as followings:
[BD63800MUF-EVK-002]
1. Connect USB Cable(C-Male) to CN2.
2. Connect DC Power Supply [6 to 28 V / 1.5 A (min.)] to VCC(Red) and GND(Black) terminal.
3. Connect Load to Outputs (OUT1A, OUT1B, OUT2A, OUT2B).
To make sure the correct connection, please check the install manual of the load.
4. Connect Clock Signal Generator to CLK terminal.
DC Power Supply
6 to 28V
Clock Signal Generator
0V(Low) –5V(High)
BD63800MUF-EVK-002
CN2 USB Cable
A-Male to C-Male
Load
Bipolar DC Step Motor
CLK
OUT1A
OUT1B
OUT2B
OUT2A S9
to
S1
Vcc GND
Output
Vcc GND
Figure 10: BD63800MUF-EVK-002 Setup

11/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
5. Set the All toggle switches (S1 to S9) to “Open” settings.
S1:Open, S2:Open, S3:Open, S4:Open, S5:Open, S6:Open, S7:Open, S8:Open, S9:Open
All toggle switches are able to select “Open” or “H”.
Open: Pin status depend on the external test pin and internal pull-up/pull-down resister.
Switch to inner side of the board.
H : Pin status is forced to High (5V).
Please don’t connect anything to the external test pin for the switch.
Switch to outer side of the board.
Toggle switch: (S1 for PSB)
Figure 11: Toggle Switch setting
Although the maximum operating supply voltage of the motor driver IC BD63800MUF-C is 40 V it is also the absolute maximum value
of the IC. So, if you use higher supply voltage than typical please make sure to include enough margin for fluctuation or voltage spikes
to never exceed the absolute maximum ratings.
Please operate the EVK at room temperature only. The maximum load current should be limited by thermal performance of the
components. Please take care to measure the temperature of the EVK components when applying your desired settings and load.
S9: Toggle to “Open” or ”H”
S8: Toggle to “Open” or “H”
S7: Toggle to “Open” or “H”
S6: Toggle to “INT”
S5: Toggle to “INT”
S4: Toggle to “INT”
S3: Toggle to “Open” or “H”
S2: Toggle to “Open”
S1: Toggle to “H”

12/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2 Software
BD63800MUF-EVK-002 can be controlled by SPI commands and the external setting pins. BD63800MUF-C GUI (Graphical User
Interface) software is enabled to set command and read status register easily. Followings are the setting parameter examples on the
software. For detail of the software manual, receiving software, please contact to your ROHM sales office or use the general ROHM
customer support system.
Software Setting items:
Drive mode selection
Motor Enable / disable
Motor Rotation Direction [Clockwise / Counterclockwise]
Driving / Hold mode
Operation on under voltage state [Open / Hold]
Drive and protection parameter
Excitation mode
Peak motor current
Slew rate
Protection parameter (UVLO, TW, Stall)

13/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.1 BD63800MUF-C GUI Overview 1
4.2.2 BD63800MUF-C GUI Overview 2
1. Rotation Direction Setting
2. Run / Hold Setting
3. Motor Enable Setting
9. Low Voltage Protection Setting
16. Control Register Map
10. Overheat Warning Setting
Green : Connected, Yellow : Initializing, Red: Not Connected
4. UV Hold Setting
5. Output Current Setting
6. Output Slew Rate Setting
7. Excitation Mode Setting
8. Don’t use
11. Stall Detect Threshold Setting
12. Stall Detect Speed-Setting
13. Stall Detect Hysteresis Setting
14. Stall Detect Counter Setting
15. BEMF Gain Setting
17. DIAG Selection
18. Status Register Map

14/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.3 Rotation Direction Setting
4.2.4 Run/Hold Setting
Setting the direction in which the motor will rotate to is possible by
pushing the button.
Selected setting is reflected when SEND
button is pushed.
Setting either Run or Hold Modes is possible by pushing the button.
In Hold Mode, motor position is held constant by setting Hold Mode Electric
Current.
Selected setting is reflected when SEND button is pushed.

15/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.5 Motor Enable Setting
4.2.6 UV Hold setting
Enabling motor movements is possible by pushing the button.
When motor is disabled, the output is Hi-Z.
Selected setting is reflected when SEND button is pushed.
UV Hold function can be disabled by pushing the button.
Selected setting is reflected when SEND button is pushed.
①
②
To enable Hold Mode, click UVM3, UVM2 and UVM0 and/or confirm blue highlight when ①
,
②
are pushed.
To disable Hold Mode, click UVM3, UVM2 and UVM0 again and/or confirm ｓgray highlight when ①,②are pushed.

16/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.7 Output Electric Current Setting(Hold mode)
4.2.8 Output Electric Current Setting(Run mode)
Current value, in percentage of the maximum current, is settable by a pull-down menu.
The output current level is displayed by IHOLD when external resistance value is inputted into RREF Value.
Selected setting is reflected when SEND button is pushed.
Current value, in percentage of the maximum current, is settable by a pull-down menu.
The output current level is displayed by IRUN when external resistance value is inputted into RREF Value.
Selected setting is reflected when SEND button is pushed.

17/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.9 Output Slew Rate Setting
4.2.10 Excitation Mode Setting
Output Slew Rate is settable.
Selected setting is reflected when SEND button is pushed.
Excitation mode is selected thru a pull-down menu.
Selected setting is reflected when SEND button is pushed.

18/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.11 Clock Input Setting
4.2.12 Under Voltage Protection Setting
Don’t use
Under Voltage Protection Level is selected thru a pull-down menu.
The ON / OFF values change when a register value is chosen.
Selected setting is reflected when SEND button is pushed.

19/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.13 Thermal Warning Setting
4.2.14 Stall Detect Threshold Setting
Thermal Warning Level is selected thru a pull-down menu.
The ON / OFF values change when a register value is chosen.
Selected setting is reflected when SEND button is pushed.
Stall Detect Threshold Level is selected thru a slide bar.
The Threshold change in response to the slide bar.
Selected setting is reflected when SEND button is pushed.

20/24
User’s Guide
BD63800MUF-EVK-002
© 2021 ROHM Co., Ltd.
No. 63UG134E Rev.003
October.2023
4.2.15 Stall Detect Rotation Speed Setting
4.2.16 Stall Detect Hysteresis Setting
Stall Detect Speed value is selected thru a slide bar.
The Threshold change in response to the slide bar.
When it is shorter than the CLK period set, Stall Detect will be triggered.
Selected setting is reflected when SEND button is pushed.
Stall Detect Hysteresis Level is selected thru a pull-down menu.
Selected setting is reflected when SEND button is pushed.