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Information
Safety Information
Encrypting wireless communication data
Because radio waves can be transmitted up to about 100 m and the
used type of communication conforms to the IEEE 802.15.4 communication
standard, programs under development might be stolen.
To prevent this, the data to transmit using wireless communication can
be encrypted. AES-CTR can be used as the encryption format from the
advanced encryption standards specified in the United States. If this
format is used, communicating units that do not have the same encryption
key cannot communicate.
An encryption key consists of 128 bits (16 bytes). If encryption is used,
the communication speed drops. Therefore, encryption is not used in the
default RF utility settings.
Data is encrypted as shown to the right.
Caution Even if sophisticated encoding is performed using AES-CTR,
the data is never completely secure. To protect programs during
development, use the target cable instead of this product.
When wireless communication is interrupted
Wireless communication might be interrupted due to the effects of
other wireless devices or when the distance between the wireless
units changes. If this happens, the wireless units regularly issue a
connection request and attempt to re-establish wireless
communication. At this time, no graphs are displayed in the RF utility
as shown below and [Reconnecting] is displayed on the status bar.
If wireless communication is interrupted,
no graphs are displayed.
Troubleshooting
If a problem occurs, first check for abnormalities by using the MINICUBE2
self-diagnosis tool. Also, check whether MINICUBE2 and the wireless
units use the latest firmware according to the Version-up Service website.
If the problem cannot be resolved, see the FAQs on the Renesas Electronics
website or see the following website and contact us by E-mail.
WEB site： http://www.renesas.com/contact/
･All information included in this document is current as of the date this document is issued. Such
information, however, is subject to change without any prior notice. Before purchasing or using any
Renesas Electronics products listed herein, please confirm the latest product information with a
Renesas Electronics sales office. Also, please pay regular and careful attention to additional and
different information to be disclosed by Renesas Electronics such as that disclosed through our
website.
･Renesas Electronics does not assume any liability for infringement of patents, copyrights, or other
intellectual property rights of third parties by or arising from the use of Renesas Electronics products or
technical information described in this document. No license, express, implied or otherwise, is granted
hereby under any patents, copyrights or other intellectual property rights of Renesas Electronics or
others.
･You should not alter, modify, copy, or otherwise misappropriate any Renesas Electronics product,
whether in whole or in part.
･Descriptions of circuits, software and other related information in this document are provided only to
illustrate the operation of semiconductor products and application examples. You are fully responsible
for the incorporation of these circuits, software, and information in the design of your equipment.
Renesas Electronics assumes no responsibility for any losses incurred by you or third parties arising
from the use of these circuits, software, or information.
･Although Renesas Electronics endeavors to improve the quality and reliability of its products,
semiconductor products have specific characteristics such as the occurrence of failure at a certain rate
and malfunctions under certain use conditions. Further, Renesas Electronics products are not subject to
radiation resistance design. Please be sure to implement safety measures to guard them against the
possibility of physical injury, and injury or damage caused by fire in the event of the failure of a
Renesas Electronics product, such as safety design for hardware and software including but not limited
to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or
any other appropriate measures. Because the evaluation of microcomputer software alone is very
difficult, please evaluate the safety of the final products or system manufactured by you.
(Note 1)"Renesas Electronics" as used in this document means Renesas Electronics Corporation and
also includes its majority-owned subsidiaries.
(Note 2)"Renesas Electronics product(s)" means any product developed or manufactured by or for
Renesas Electronics.
(1) Set the two wireless units to "H".
(2) Connect one wireless unit to MINICUBE2, and then start the RF utility.
(3) Click [Option] on the menu bar and then [Security]. The security
dialog box is displayed.
(4) Select [Security Valid], and then enter an alphanumeric character
string of 16 characters or less for [Security Key]. This string is case
sensitive.
(5) Click [OK]. The security setting is applied to the connected wireless unit.
(6) Also, specify the security setting for the other wireless unit by
repeating steps (2) to (5).
However, if wireless communication is interrupted during debugging or
programming, the user system cannot be stopped until wireless
communication is restored. Therefore, the system might be corrupted
due to an infinite loop.
To prevent this, a setting that immediately resets the system when
wireless communication is interrupted can be specified. Select [Reset]
for the fail-safe setting in the RF utility configuration dialog box as
shown below.
Is displayed on the status
bar while reconnecting.
Specification
●Hardware
Size
Weight
Guaranteed
operating
temperature range
Storage temperature
range
Connectors
Special features
●Wireless communication
Frequency band
Connectable distance
Usable number of frequency channels
Number of units identifiable in the
same space
Current consumption (supplied from
the user system)
Communication method
Data rate
Applicable laws
Select this to continue
operation even if wireless
communication is interrupted.
Select this to reset the
system if wireless
communication is interrupted.
Item
Specification
See the right figure.
About 10 g
-15℃ to +70℃
-15℃ to +70℃
16pins, general-purpose 2.54mm
pitch
Temperature detection, changing
the LED color, monitoring the radio
wave intensity
Item
2400MHz to 2483.5MHz
Maximum100m
(depending on the used environment)
14 （In 5MHz intervals）
100
About 50mA on average
Direct Sequence Spread Spectrum (DSSS)
250kbps，1Mbps
Radio Act (Japan), CE(Europe), FCC(USA),
SRRC(China), KCC(Korea)
4.3cm
3.0cm
1.2cm
Specification
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