New Green, Low-power FMA1127 Touch Sensor Controller from ATLab
Converts Capacitance to Digital Data
SUNNYVALE, Calif., Feb. 23 /PRNewswire/ -- Fujitsu Microelectronics
America, Inc. (FMA) today announced that the company is now distributing a
compact, flexible touch sensor controller from ATLab Inc. of South Korea. The
FMA1127 controller converts capacitance generated by the human body and
conductive touch pad to digital data - with no analog processing.
This low-power, fast-processing, easy-to-implement capacitive touch
controller is ideally suited for mobile phones, PDAs, remote controllers,
multimedia players and other mobile devices. Digital touch sensor technology
allows for easy, multi-touch, intuitive access and navigation. The controller
is water resistant and can be implemented with a variety of materials, making
the FMA1127 an ideal design choice for alarm systems, handheld health care
products, and home appliances, or for other applications where the controller
can replace mechanical switches and buttons.
The FMA1127 is manufactured by Fujitsu Microelectronics at its
Aizu-Wakamatsu facility in Japan using 0.25-micron technology. The controller
was developed to compare reference and sensor input impedances to detect touch
- all in the digital domain. The original touch sensor controller technology
was targeted to replace conventional buttons, and has now been applied to
touch screens and proximity sensors using ATLab's DigiSensor(TM), which
measures imbalances in impedance caused by finger contact. Compared with most
keypads in cell phones, the touch sensor controller's DigiSensor enables
thinner, lighter portable electronics products.
"The FMA1127 represents a significant breakthrough in human input
devices, enabling lighter and smaller mobile devices that use all-digital
processing for access and navigation - at a very competitive price point,"
said Dean Chang, senior product marketing manager at Fujitsu Microelectronics.
"This touch sensor controller is very environmentally friendly, power
efficient, and can be easily integrated with existing microcontrollers into a
broad range of mobile products, home appliances and other systems."
"We continue to see a strong focus on touch-screen technology in handset
markets and expect all the major manufacturers to release touch-screen phones
in 2009. Also, we expect to see tighter integration of touch screens with
software and hardware in 2009, which will drive greater touch screen adoption
and a faster transition to capacitive technology from resistive technology,"
said Amy Leong, research director at Gartner Dataquest (Source: "Dataquest
Insight: Touch-Screen Gadgets Are Hot at CES 2009", January 28, 2009).
Features Provide Thin, Light, Flexible Digital Contact Technology
The FMA1127 operates at a wide voltage range of 2.5V to 5.5V, and at
temperatures between -35 degrees C and 85 degrees C. Current requirements are
less than 0.15 mA, and response time is only 0.2 milliseconds. A total of 8kV
ESD protection is provided for the chip/contact pad and 15 kV for system/air.
No ground is required for the touch pad, and no external clock source is
needed. Equipped with an I2C interface, the FMA1127 automatically adjusts
sensor sensitivity based on the operating environment. The controller includes
Automatic Impedance Calibration (AIC(TM)), which supports various
sensitivities for individual channels independently, and is used to change
calibration intervals and other parameters. AIC can be paused and resumed
using a microcontroller.
The FMA1127 also includes ATLab's Adjacent Pattern Interference
Suppression (APIS(TM)) filtering function to eliminate adjacent key or pattern
interference. The FMA1127 touch sensor controller provides both touch-strength
output and touch on/off output. Two types of interrupts - general-purpose and
touch detection - are available. Resolution of touch strength is 8 bits (256
Several general-purpose DIOs also are incorporated in the controller,
depending on the package type. These can be configured and programmed to meet
specific customer needs, providing additional flexibility and value.
Pricing and Availability
The FMA1127 is available now in a variety of packages that support as
many as 12 sensor input channels and 12 DIOs. The 20-, 24- and 30-pin SSOP
versions provide DIOs of 2, 3 and 6, and sensor inputs of 6, 9 and 12,
QFN packages are also available. The 24-pin QFN touch sensor controller
provides 3 DIOs and 6 sensor inputs; the 32-pin QFN touch sensor controller
offers 8 DIOs and 9 sensor inputs; and the 40-pin QFN provides 12 sensor
inputs and 12 DIOs. Pricing begins at $1.40 each in 10,000-unit quantities.
About Fujitsu Microelectronics America, Inc.
Fujitsu Microelectronics America, Inc. (FMA) leads the industry in
innovation. FMA provides high-quality, reliable semiconductor products and
services for the wireless, automotive, consumer, and other markets throughout
North and South America. For more product information, please visit the
company's web site at http://us.fujitsu.com/micro/tsc/ or address e-mail to
The FMA1127 fact sheet is available at this URL:
High-resolution device photo:
All product names mentioned herein are trademarks or registered
trademarks of their respective owners.
For further information:
For further information: Emi Igarashi of Fujitsu Microelectronics
America, Inc., +1-408-737-5647, firstname.lastname@example.org; or Dick Davies of
IPRA, +1-415-652-7515, email@example.com, for Fujitsu Microelectronics
America, Inc. Web Site: http://www.fma.fujitsu.com