Fujitsu Microelectronics Europe distributes the FMA1127, a high-performance, low power Touch Sensor Controller (TSC) from ATLab, Inc. of South Korea. The TSC series offers a simple, reliable and aesthetic replacement for virtually all mechanical buttons, sliders and turning knobs across a variety of markets including home appliance, mobile, industrial, consumer electronics and office equipment. By enabling cost-efficient implementations and offering a high degree of design flexibility, the device provides an extremely user-friendly solution for touch-sensing applications.
Key features of the FMA1127
1. High-performance: consistent sensitivity and fast response
Using patented technology from ATLab, Inc., the FMA1127 detects touch in the digital domain by comparing the sensor input impedances with its built-in reference impedance. The differential signal format makes the sensor resistant to outer signal disturbances and assures reliable operation. Furthermore, the FMA1127’s AIC (Automatic Impedance Calibration) function enables the sensor to maintain a consistent sensitivity even during changes to the environment caused by temperature, humidity and production tolerances. The AIC function can be configured easily to adjust the sensitivity for each individual channel.
The digital architecture of the device allows the FMA1127 to achieve an exceptionally fast response time of 0.2ms.
2. Low power consumption
Processed in standard CMOS technology, the FMA1127 features ultra-low power consumption. Typical supply current for active mode is just 120µA. In sleep mode the power consumption can be reduced down to 0.1µA. This makes the FMA1127 ideal for portable applications.
3. Cost-efficient implementation
The FMA1127 makes implementing touch-sensing hardware and software fast, easy and cost-efficient. With built-in reference impedances, the sensor renders external components unnecessary for touch channels in a wide range of applications. A single electrode is sufficient for each touch channel.
Minimum software effort is required to implement basic touch functionality. Powered by the APIS (Adjacent Pattern Interference Suppression) function, the controller can filter-out unintentional touches made by the user. Additional filtering functions provide further pre-processing of the touch data.
4. High-design flexibility
The FMA1127 offers a high-level of design flexibility through the host interface (IC) as well as up to 12 programmable general-purpose digital I/Os, which can also be used as external interrupt pins. Furthermore, the flexibility of touch-pad designs is enhanced through individual channel sensitivity and integrated pre-processing, all configurable via the host MCU. For advanced sensing, such as interpolation between discrete sensor pads, the touch strength of each sensor pad can be read by the host MCU with up to 8-bit precision.
The FMA1127 is available immediately in QFN as well as SSOP packages. Customers have the flexibility to choose devices with 6, 9 or 12 channels and digital I/Os ranging from 2 to 12. The smallest device has a form-factor of 4 x 4 x 0.85mm.
Design tool and support
To ensure fast time-to-market for customers, a tuning kit with tuning viewer program is available as well as application notes and example software for various Fujitsu microcontrollers.
About Fujitsu Microelectronics Europe
Fujitsu Microelectronics Europe (FME) is a major supplier of semiconductor products. The company provides advanced systems solutions to the automotive, digital TV, mobile telephony, networking and industrial markets. Engineers from design centres dedicated to microcontrollers, graphics controllers, mixed-signal, wireless, multimedia ICs, ASIC products and software development, work closely with FME’s marketing and sales teams throughout EMEA to help satisfy customers’ systems development requirements. This solutions approach is supported by a broad range of advanced semiconductor devices, IP, building blocks and software.
Note: The above text is the public part of the press release obtained from the manufacturer (with minor modifications). EETimes Europe cannot be held responsible for the claims and statements made by the manufacturer. The text is intended as a supplement to the new product presentations in EETimes Europe magazine.