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Walk through an example touch interface design using Atmel Qtouch Studio 4.3
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Offering capacitive touch microcontrollers for your home entertainment applications.
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Walk through an example touch interface design using Atmel Qtouch Studio 4.3
» Start Now
A Sure Touch for Application Specific Controls
Atmel offers market-proven technology for implementing nonmechanical buttons, sliders, and wheels on any touch-sensitive device. These integrated circuits (ICs) enhance the user experience with excellent precision and reliability. They also deliver superb low-power characteristics, a critical requirement for today's battery-powered handheld and mobile devices. The technology supports simple 1–10 button configurations as well as more complex scanned-matrix configurations of up to 48 buttons — at very low cost per button. In addition to the application specific chips, Atmel offers the QTouch® Suite for embedding buttons, sliders, and wheels into the industry-leading Atmel AT91SAM and AVR® microcontrollers.
Key Features
- Long Range Proximity Sensing — Provides a more intuitive user interface by enabling capacitive proximity range reliably over 10-inches (25cm)
- Cutting-edge interfaces — Soft controls enable sophisticated designs without the space constraints and wear-and-tear on mechanical parts.
- Market-proven technologies — Atmel has 15 years of experience in the touch market, with hundreds of applications now in operation around the world.
- Exacting precision — The ICs deliver patented adjacent button suppression for small keypads and enables clear, discrete buttons on touchscreens.
- Design flexibility — Support for sliders and wheels on the interface and up to 48 customized buttons allows designers to maximize functionality and aesthetics.
- Low power consumption — The ICs draw a minimum of power, conserving battery charges on mobile devices.
- Robust operation — Environmental resilience and excellent noise suppression increase reliability and usability.
Buttons, Sliders and Wheels Devices
| Device Family |
Summary Benefit |
Applications |
Technologies |
Key Parameters |
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Configurable sensitivity Proximity sensing |
Touch button replacements for mechanical buttons |
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Max-on timeout
Touch-on/touch-off Configurable timer |
The Atmel SingleTouch controllers implement a single capacitive-touch button. They can be used to replace a traditional mechanical switch in many types of interface designs. The ICs supports touch-on/touch-off or toggle operation, making them ideal for use as a power-button replacement. By selecting the appropriate capacitors, designers can configure the ICs to work with various panel thicknesses and materials.
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Mobile devices |
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These Atmel touch-sensor ICs are designed to meet the size constraints of mobile devices requiring up to 10 soft buttons. They are based on Atmel QTouch technology and provide all the necessary signal-processing and I/O functions in a tiny package.
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Many buttons from one device |
Mobile and consumer electronics applications & Home Appliances |
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Atmel provides a number of touch-sensor ICs to fit the requirements of designers who need to implement more than 10 buttons in their applications. Up to 48 buttons can be supported in one device. These ICs represent a wide variety of technologies, sizes, features, and price points. See the Product Matrix below for details.
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Capacitive Touch Sliders and Wheels |
Small control-panels
Battery-driven consumer devices |
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Up to 16 touch channels
LED control
I/O expansion
2-wire serial interface |
This Atmel sliders and wheels solution provides 16 touch channels and a slider (using 2 to 8 channels), plus LED control, I/O expansion, and a 2-wire serial interface compatible with the industry-standard I2C bus. It is ideal for use as a small control-panel processor in battery-driven consumer devices such as mobile phones, personal media players, PDAs, digital picture frames, and other mobile appliances. The IC is based on Atmel QMatrix™ and QSlide® technologies, has very low power requirements, and offers a wide range of host programmable I/O configurations.
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Standardized, fully automotive-qualified 11-button capacitive-touch controller |
Automotive applications like radios, keyless entry, electric windows, and satellite navigation |
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Automotive Qualified 11 buttons |
This IC is a standardized, fully automotive-qualified 11-button capacitive-touch controller designed to meet all the requirements for touch devices in automotive industry. QMatrix technology provides accurate and reliable user interfaces, and guard channels protect against false detections by other buttons. The chip can be used in all sorts of automotive applications where buttons are required, including radios, keyless entry, electric windows, and satellite navigation.
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