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Kionix unveils ARM-based sensor hub

01 Apr 2014

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Kionix Inc. announced an integrated sensor hub device, the KX23H, combining a 3-axis accelerometer with a 32bit ARM Cortex-M0 microcontroller in a single 3mm x 3mm x 0.9mm package.

The KX23H also includes a library of advanced motion processing software, providing the user with pedometer and caloric counting algorithms, as well as activity monitoring and the ability to detect differences between states such as Stop/Walk/Run/Car/Train etc. In addition, the KX23H includes embedded algorithms for Tap/Double-Tap, screen rotation, tilt and other common applications.

The KX23H's microcontroller is a low-power ARM Cortex-M0, running at 32MHz. With the ability to accept additional inputs such as gyroscopes, magnetometers and pressure sensors, and the capability to run sensor fusion software, the KX23H can reduce demand on the system CPU or application processor, reduce power consumption and simplify system architecture. The KX23H marks the first time Kionix has offered a sensor hub device, building upon the technology of parent company ROHM Semiconductor and their LAPIS subsidiary, formerly OKI semiconductor.

The accelerometer is based on Kionix's design, with 16bit resolution, a 256byte FIFO/FILO buffer and power consumption as low as 1µA. It also features FlexSet Performance Optimization allowing the user to dynamically adjust power and noise parameters according to the state and activity of the device.

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