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Renesas Electronics New Intellectual Property for Capacitive Touch Delivers Industry-Leading Performance for Human-Machine Interface Applications
|By Business Wire
|July 15, 2014 07:01 AM EDT
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 times1
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
Key Features of the New IP:
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 61000-4-62
standards, it enables the design of robust systems even under noisy
(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
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 http://am.renesas.com/.
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
(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
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