Renesas R0K5R8C3MDU30BR User manual

Looking for a discount?
Check out our current promotions!
This coversheet was created by Verical, a division of Arrow Electronics, Inc. (“Verical”). The attached document was created by the part supplier,
not Verical, and is provided strictly 'as is.' Verical, its subsidiaries, affiliates, employees, and agents make no representations or warranties
regarding the attached document and disclaim any liability for the consequences of relying on the information therein. All referenced brands,
product names, service names, and trademarks are the property of their respective owners.
00000005981LF-000
EOS Power
Buy Now
We have 45,000 LP502030-PCM-NTC-LD-A02554 - EEMB - Lithium Battery Rectangular 3.7V 250mAh Rechargeable in
stock now. Starting at $0.034. This EEMB part is fully warrantied and traceable.
1-855-837-4225
Give us a call
International: 1-555-555-5555 1-415-281-3866
1-415-281-3866
Arrow Electronics,
Verical Division
P.O. Box 740970
Los Angeles, CA 90074-0970
Arrow Electronics, Inc
9201 East Dry Creek Road
Centennial, CO 80112
R0K5R8C3MDU30BR
RENESAS TECHNOLOGY
Buy Now

APPLICATION NOTE
R01AN1051EJ0100 Rev.1.00 Page 1 of 38
Mar 21, 2012
R8C/3MK Group
USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
Introduction
This document is an instruction manual for the R0K5R8C3MDU30BR that enables USB-to-Serial communication
conversion using the USB Peripheral function and serial communication function in R8C/3MK Group MCUs.
Target Device
R8C/3MK Group
Contents
1. Preface .............................................................................................................................................. 2
2. Important ........................................................................................................................................... 3
3. Precautions for Safety....................................................................................................................... 5
4. Demo Board Functions ..................................................................................................................... 8
5. Related Documents........................................................................................................................... 8
6. Demo Board Description ................................................................................................................... 9
7. Setting up the Demo Board............................................................................................................. 12
8. Operating Instructions ..................................................................................................................... 15
9. I2C demo communication protocol .................................................................................................. 23
10. SSU demo communication protocol................................................................................................ 28
11. Circuit Diagram................................................................................................................................ 34
12. Parts Layout Diagram ..................................................................................................................... 34
13. Parts List ......................................................................................................................................... 34
R01AN1051EJ0100
Rev.1.00
Mar 21, 2012

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 2 of 38
Mar 21, 2012
1. Preface
This document provides hardware setting instructions, operating instructions and usage notes for the
R0K5R8C3MDU30BR to enable USB-to-Serial communication conversion using the USB Peripheral function and
serial communication function in R8C/3MK Group MCUs.
Before using the demo board, please refer to ”7.1 Bundled Accessories Confirmation” to confirm you have all
accessories bundled with the demo board package. If you have any questions concerning the demo board, please contact
the closest Renesas Electronics Corp., Renesas Solutions Corp., or Renesas Electronics Sales Corp. office.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 3 of 38
Mar 21, 2012
2. Important
Before using this product, be sure to read this instruction manual carefully. Keep this manual, and refer to it when you
have questions about this product.
Product:
"Product" in this document collectively refers to the following products manufactured by Renesas Electronics
Corporation
(1) R8C/3MK Group USB - to - Serial Communication Conversion Demo Board R0K5R8C3MDU30BR
"Product" herein encompasses neither the customer's user system nor the host machine.
Purpose of use of the product:
This product is a demonstration board to use USB - to -Serial Communication function with R8C/3MK Group MCU.
Be sure to use this product correctly according to said purpose of use. Please avoid using this product other than for
its intended purpose of use.
For those who use this product:
This product can only be used by those who have carefully read this instruction manual and know how to use it.
Use of this product requires basic knowledge of electric circuits, logical circuits, and MCUs.
When using this product:
(1)In no event shall Renesas Electronics Corporation be liable for any consequence arising from the use of this
product.
(2)Renesas Electronics Corporation strives to provide workarounds for and correct trouble with products
malfunctions, with some free and some incurring charges. However, this does not necessarily mean that Renesas
Electronics Corporation guarantees the provision of a workaround or correction under any circumstances.
(3)This product covered by this document has been developed on the assumption that it will be used for evaluation in
laboratories. Therefore, it does not fall within the scope of applicability of the Electrical Appliance and Material
Safety Law and protection against electromagnetic interference when used in Japan.
(4)Renesas Electronics Corporation cannot predict all possible situations and possible cases of misuse that carry a
potential for danger. Therefore, the warnings in this instruction manual and the warning labels attached to this
product do not necessarily cover all such possible situations and cases. The customer is responsible for correctly
and safely using this product.
(5)The product covered by this document has not been through the process of checking conformance with UL or other
safety standards and IEC or other industry standards. This fact must be taken into account when the product is
taken from Japan to some other country.
(6)This product is a product used for development and an evaluation stage. It cannot include in a user's product and
cannot mass-produce.
(7)Even if it is the case where fault is in the device carried in this product, it does not exchange for the fault repair
article of a device.
(8)Operation with all USB host devices cannot be guaranteed. And Connection to all serial communication devices
cannot be guaranteed.
(9)The Application Notes of this product are all references, and no one to guarantee the operation.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 4 of 38
Mar 21, 2012
Usage restrictions:
This product has been developed as a means of supporting system development by users. Therefore, do not use it as
an embedded device in other equipment. Also, do not use it to develop systems or equipment for use in the
following fields.
(1) Transportation and vehicular
(2) Medical (equipment that has an involvement in human life)
(3) Aerospace
(4) Nuclear power control
(5) Undersea repeaters
If you are considering the use of this product for one of the above purposes, please be sure to consult your local
distributor.
About product changes:
We are constantly making efforts to improve the design and performance of our product. Therefore, the
specification or design of the product, or this user's manual, may be changed without prior notice.
About rights:
(1) We assume no responsibility for any damage or infringement on patent rights or any other rights arising from the
use of any information, products or circuits presented in this user’s manual.
(2) The information or data in this user’s manual does not implicitly or otherwise grant a license to patent rights or any
other rights belonging to Renesas or to a third party.
(3) This user’s manual and this product are copyrighted, with all rights reserved by Renesas. This user’s manual may
not be copied, duplicated or reproduced, in whole or part, without prior written consent from Renesas.
About diagrams:
Some diagrams in this user’s manual may differ from the objects they represent.
Warranty:
Renesas will exchange this board free of charge only due to manufacturing defects.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 5 of 38
Mar 21, 2012
3. Precautions for Safety
3.1 Definitions of Signal Words
This chapter describes the precautions which should be taken in order to use this product safely and properly. Be sure to
read and understand this chapter before using this product.
Contact us if you have any questions about the precautions described here.
This chapter describes the precautions which should be taken in order to use this product safely and properly. Be sure to
read this chapter before using this product.
WARNING
WARNING indicates a potentially dangerous situation that will cause death or heavy
wound unless it is avoided.
CAUTION
CAUTION indicates a potentially dangerous situation that will cause a slight injury or
a medium-degree injury or property damage unless it is avoided.
In addition to the two above, the following are also used as appropriate to indicate additional precautions.
[Notice] Point out the attention for the malfunction by wrong setting.
△means WARNING or CAUTION.
Example:
CAUTION AGAINST AN ELECTRIC SHOCK
means PROHIBITION.
Example:
DISASSEMBLY PROHIBITED
●means A FORCIBLE ACTION.
Example:
UNPLUG THE POWER CABLE FROM THE RECEPTACLE.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 6 of 38
Mar 21, 2012
3.2 Warning
WARNING
Warnings for Power Supply:
This product CAN NOT use external power supply from header pins. The demo board may incur
damage.
Do not touch the plug of the power cable when your hands are wet. This may cause electric
shock.
Power and Ground terminals are also on the rear surface of this product. They should Not be in
contact with a conductive material directly.
When installing this equipment, insure that a reliable ground connection is maintained.
If you smell a strange odor, hear an unusual sound, or see smoke coming from this product, then
disconnect power immediately Do not use this as it is because of the danger of electric shock
and/or fire. In this case, contact your local distributor.
Before setting up this product and connecting it to other devices, turn off power or remove a
power cable to prevent injury or product damage.
Warnings to Be Taken for Handling:
Do not break down this product. Breaking down the product will void your warranty.
Warning for Installation:
Do not set this product in water or areas of high humidity. Make sure that the product does not
get wet. Spilling water or some other liquid into the product may cause un-repairable damage.
Warning for Use temperature:
This equipment is to be used in an environment with a maximum ambient temperature of 35°C.
Care should be taken that this temperature is not exceeded.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 7 of 38
Mar 21, 2012
3.3 Caution
CAUTION
Cautions to Be Taken for Handling This Product:
Use caution when handling the product. Be careful not to apply a mechanical shock.
Do not touch the connector pins of this product directly. Static electricity may damage the
internal circuits.
When attaching and removing the cable, hold the plug of the cable and do not pull on the cable.
Do not pull this product by the communications interface cable. Excessive flexing or force may
break conductors.
When you connect an external board to this product through test pins, be careful not to short
signal lines or between power line and ground. If this product is revised by the user, operation
cannot be guaranteed.
Note on Transporting the Product:
When sending your product, use the packing box and cushioning material supplied with the
product when it was delivered to you and specify caution in handling (handling as precision
equipment). If packing of your product is not complete, it may be damaged during transportation.
When you pack your product in a bag, make sure to use the conductive plastic bag supplied with
the product. If you use a different bag, it may lead to further trouble with your product due to
static electricity.
Caution to Be Taken for Disposal:
Penalties may be applicable for incorrect disposal of this waste, in accordance with your national
legislation.
European Union regulatory notices:
The WEEE (Waste Electrical and Electronic Equipment) regulations put responsibilities on
producers for the collection and recycling or disposal of electrical and electronic waste. Return of
WEEE under these regulations is applicable in the European Union only. This equipment
(including all accessories) is not intended for household use. After use the equipment cannot be
disposed of as household waste, and the WEEE must be treated, recycled and disposed of in an
environmentally sound manner.
Renesas Electronics Europe GmbH can take back end of life equipment, register for this service
at “http://www.renesas.eu/weee”.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 8 of 38
Mar 21, 2012
4. Demo Board Functions
With the MCU and the board circuits, this demo board can be used for the following.
USB-to-UART communication conversion function (program already written to MCU)
USB-to-UART/USB-to-I2C/USB-SSU communication conversion function (provided via downloading module)
Rewrite internal program ROM via USB (downloader program already written to MCU)
Supports bus-powered (regulator from 5V to 3.3V) system power supply
5. Related Documents
Please refer to the following manuals and application note as needed when using the demo board.
•R8C/3MU Group, R8C/MK Group Users Manual Hardware Version
Download from here:
http://www.renesas.com/products/mpumcu/r8c/Documentation.jsp
•R8C/USB Group USB Downloader (r01an0703ej_r8cusbfdl.pdf)
Please contact your Renesas sales or representative office to obtain this document.
•Renesas USB Device USB Peripheral Communications Devices Class Driver (PCDC)
(r01an0555ej_r8cusbpcdc.pdf)
Please contact your Renesas sales or representative office to obtain this document.

R8C/3MK Group USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00 Page 9 of 38
Mar 21, 2012
6. Demo Board Description
6.1 Demo Board Specification
Figure 1 and Figure 2 show external views of the front and back of the demo board.
Figure 1 R0K5R8C3MDU30BR Board (Top View)
Figure 2 R0K5R8C3MDU30BR External View (back)
LED (Green)
R8C/3MK
MCU
USB receptacle
(mini B)
USB Downloader
function switch pin
External connection
pins (J3)
Ceramic
oscillator
Regulator
(from VBUS)
External connection
pins (J3)
External connection
pins (J1, J2)