Renesas Electronics New Intellectual Property for Capacitive Touch Delivers
Industry-Leading Performance for Human-Machine Interface Applications
Innovative Technology Supports Both Mutual- and Self-Capacitance Methods and
Achieves High-Touch Sensitivity and High-Noise Immunity
SANTA CLARA, Calif. -- July 15, 2014
Renesas Electronics America Inc., a premier supplier of advanced semiconductor
solutions, today announced development of innovative new intellectual property
(IP) that implements industry-leading capacitive-touch sensing technology
ideal for home appliances and healthcare equipment. The IP achieves high-touch
sensitivity five times^1 superior compared to that of Renesas’ R8C/3xT
microcontrollers (MCUs), as well as high-noise immunity allowing the
technology to pass strict noise tests. Furthermore, for the first time,
Renesas IP supports the mutual-capacitance method which is more reliable and
versatile than the conventional self-capacitance method.
In the human machine interface (HMI) field for electric and electronic
equipment, touch-key manipulation interfaces are the subject of increasing
attention. Capacitive-touch panels are being rapidly adopted because touch-key
operation can easily improve reliability in product design and enhance the
end-user experience. In fact, system manufacturers are now developing new
touch panels with a curved surface, instead of the traditional planar surfaces
that have been mainstream until now. Looking ahead, touch-panel technologies
with even better sensitivity and noise resistance will become highly demanded
for a wide range of applications.
As a leader in the global MCU industry, Renesas helped to drive adoption of
touch-key manipulation systems in October 2009 when it launched its R8C/3xT
series of MCUs supporting capacitive-touch interfaces. Renesas expects strong
growth in the market for touch-key systems and, by leveraging innovative
technologies like its newest IP, the company intends to be a key player with
technology and products supporting HMI applications.
Key Features of the New IP:
(1) Industry-leading^1 high-sensitivity and high-noise immunity
The Renesas IP not only offers high-noise immunity, but also provides
characteristics that allow reliable sensing even with acrylic panels with
thicknesses in excess of 10 mm. The technology can implement flexible designs,
for example products with curved panels. In addition, the IP provides a
high-level of touch sensitivity, so it can expand the range of scenarios for
consumer interaction, such as gloved hands and proximity sensing where there
is no actual touch. Because the IP passes strict electromagnetic noise testing
stipulated in the International Electrotechnical Commission (IEC) 61000-4-3
and IEC 61000-4-6^2 standards, it enables the design of robust systems even
under noisy conditions.
(2) Support for the mutual-capacitance method
The new IP supports the mutual-capacitance method, which makes it easier to
implement moisture proofing measures in end products, so that false detections
do not occur even if there is water on the touch key area. The IP also
supports embedding touch keys in a matrix configuration to eliminate
false-ghost detections, a phenomenon associated with devices implementing the
self-capacitance method. This allows the number of touch keys to be increased
with a minimal number of pins.
(3) Development environment that significantly reduces the development burden
Renesas plans to provide a new development environment that maintains
compatibility with the existing Renesas tool chain while improving ease of use
for its customers. The newly-developed touch-panel IP is ideal for use in home
appliances and healthcare equipment, but can also be applied in any field
where longevity and reliability are required, like factory automation (FA) and
home security. Renesas is committed to providing customers with optimal
solutions in a timely manner, and is proceeding with the development of MCUs
that incorporate the company’s newest IP.
Samples of Renesas Electronics' MCUs incorporating the new static capacitive
touch panel IP are expected to be available during the fiscal year 2014.
(Availability is subject to change without notice.)
About Renesas Electronics America Inc.
Renesas Electronics America, Inc., headquartered in Santa Clara, California,
is a wholly owned subsidiary of Renesas Electronics Corporation (TSE: 6723),
the world's number one supplier of microcontrollers and a premier supplier of
advanced semiconductor solutions including microcontrollers, SoC solutions,
and a broad range of analog and power devices. More information about the
products offered by Renesas Electronics America can be found at
For more information, follow Renesas Electronics America at @RenesasAmerica on
Twitter and http://www.facebook.com/RenesasAmerica.
All trademarks or registered trademarks are the property of their respective
(Note 1) As of July 15, 2014
(Note 2) The IEC 61000-4-3 and IEC 61000-4-6 standards:
IEC (International Electrotechnical Commission) standards for EMS.
4-3: Radiated, radio-frequency, electromagnetic field immunity test
4-6: Immunity to conducted disturbances, induced by radio-frequency fields
Renesas Electronics America Contacts:
Voce Communications, a Porter Novelli Company
Jessica Kerr, 415-975-2213
Nancy Sheffield, 408-588-6335
Senior Marcom Manager
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