Freescale

Description

Apr 25, 2017 FXOS8700CQ is a small, low-power, 3-axis, linear accelerometer and 3-axis, magnetometer combined into a single package. The device features a selectable I2C or point-to-point SPI serial interface with 14-bit accelerometer and 16-bit magnetometer ADC resolution along with smart-embedded functions. This application note demonstrates the FXOS8700CQ vector-magnitude function for both the accelerometer and magnetometer with use-case examples. Use cases where this application note is useful include: Accelerometer vector- magnitude function: Detection of linear acceleration exceeding a threshold. Detection of The FXOS8700CQ Xtrinsic 6-axis sensor combines industry-leading accelerometer and magnetometer sensing in a small 3 x 3 x 1.2 mm QFN plastic package. Applications include e-compass, enhanced user interface, augmented reality and location-based service applications (static geographic heading). Target products This application note demonstrates the Transient-. Acceleration function of the FXOS8700CQ with use-case examples. Two use cases identified for the Transient-Acceleration function are included: Detection of shake along an axis ( using the function with high-pass filter enabled). Detection of linear acceleration or tilt This application note demonstrates the auto-calibration function of the FXOS8700CQ . Auto calibration is intended for mobile platforms with limited processing power and memory. It provides automatic hard-iron calibration and compensation using the min/max averaging method to calculate a hard-iron estimate.