Kionix has introduced the KXTF9 tri-axis accelerometer with Directional Tap/Double-Tap. An algorithm embedded into the ASIC (application specific integrated circuit) of the product creates up to 12 tap-enabled commands for customer-specified functions. The Directional Tap/Double-Tap operates by the detection of a quick, light tap, or double tap, on any of the six faces of an object (±X, ±Y and ±Z). The embedded algorithm allows the accelerometer to discern a single or double tap and the direction from which the tap originated. Customers can use these 12 tap/double taps as commands to applications on their product to create novel and intuitive user experiences.
By using the accelerometer, a single tap to the face of a cell phone could send the call to voicemail or silence the ringing; a tap to the left could enable the navigation functionality; a double tap on the bottom could provide a transition to internet access. The device maintains the orientation-detection and low-power motion interrupt algorithms. With an I2C interface, the device features include a user-programmable ODR (output data rate) with analogue-to-digital conversions executed at user-defined sampling rates, selectable 8 or 12bit resolution, user-selectable g-range and a digital high-pass filter with user-selectable cut-off frequency. Packaged in a 3x3x0.9mm, 10-pin LGA, the accelerometer is pin compatible with the company's KXSD9 and KXTE9 sensors and operates at supply voltages from 1.8 to 3.6V DC. The features of the device can be evaluated by customers by using the company's development tools and software support.
