General Description:

The BMl160 is an inertial measurement unit (lMU) consisting of a state-of-the-art 3-axis, low-gaccelerometer and a low power 3-axis gyroscope. lt has been designed for low power, highprecision 6-axis and 9-axis applications in mobile phones, tablets, wearable devices, remotecontrols, game controllers, head-mounted devices and toys. The BMl160 is available in acompact 14-pin 2.5 x 3.0 x 0.83 mm' LGA package. When accelerometer and gyroscope are infull operation mode, power consumption is typicaly 925 uA, enabling always-on applications inbattery driven devices. The BMl160 offers a wide Vop voltage range from 1.71V to 3.6V and aVopio range from 1.2V to 3.6V, allowing the BMl160 to be powered at 1.8V for both Vop andVDDIO.

Due to its built-in hardware synchronization of the inertial sensor data and its ability tosynchronize data of external devices such as geomagnetic sensors, BMl160 is ideally suited foraugmented reality, gaming and navigation applications, which require highly accurate sensoldata fusion. The BMl160 provides high precision sensor data together with the accurate timingof the corresponding data. The timestamps have a resolution of only 39 us.

Further Bosch Sensortec sensors, e.g. geomagnetic (BMM150) can be connected as slave via asecondary iC interface. in this configuration, the BMl160 controls the data acquisition of theexternal sensor and the synchronized data of all sensors is stored the register data and can beadditionally stored in the built-in FlFO

The integrated 1024 byte FlFO buffer supports low power applications and prevents data loss innon-real-time systems. The intelligent FlFO architecture allows dynamic reallocation of FlFOspace for accelerometer, gyroscope and external sensors, respectively. For typical 6-DoFapplications, this is sufficient for approx. 0.75 s of data capture. In a typical 9-DoF application-including the geomagnetic sensor -this is sufficient for approx. 0.5 s.

Like its predecessors, the BMl160 features an on-chip interrupt engine enabling low-powelmotion-based gesture recognition and context awareness. Examples of interrupts that can beissued in a power efficient manner are: any- or no-motion detection, tap or double tap sensingorientation detection, free-fall or shock events. The BMl160 is Android 5.0 (Lolipop) compatibleand in the implementation of the Significant Motion and Step Detector interrupts, eachconsumes less than 20uA.

The smart built-in power management unit (PMU) can be configured, for example, to furthellower the power consumption by automatically sending the gyroscope temporarily into fast start.up mode and waking it up again by internally using the any-motion interrupt of theaccelerometer. By allowing longer sleep times of the host, the PMU contributes to significantfurther power saving on system level.

Besides the flexible primary interface (lC or SPl) that is used to connect to the host. BMl160provides an additional secondary interface. This secondary interface can be used in SPl modefor OlS (optical image stabilization) applications in conjunction with camera modules, or inadvanced gaming use cases, When connected to a geomagnetic sensor, BMl160 will triggelautonomous read-out of the sensor data from magnetometer without the need for interventionby the host processor.

Key features:

•High performance accelerometer and gyroscope (hardware synchronized)

•Very low power consumption: typ. 925 μA (accelerometer and gyroscope in full operation)

•Android Lollipop compatible: significant motion and step detector / step counter (5 uA each)

•Very small 2.5 x 3.0 mm  footprint, height 0.83 mm

•Built-in power management unit (PMU) for advanced power management

•Power saving with fast start-up mode of gyroscope

•Wide power supply range: 1.71V ... 3.6V

•Allocatable FlFO buffer of 1024 bytes (capable of handling external sensor data)

•Hardware sensor time-stamps for accurate sensor data fusion

•Integrated interrupts for enhanced autonomous motion detection

•Flexible digital primary interface to connect to host over |C or SPl

•Extended I²C mode with clock frequencies up to 1 MHz

•Additional secondary high speed interface for OlS application

•Capable of handling external sensor data(e.g.geomagnetic or barometric pressure sensors by Bosch Sensortec).

Typical applications:

•Augmented Reality

•Indoor navigation

•3D scanning/indoor mapping

•Advanced gesture recognitionImmersive gaming

•9-axis motion detection

•Air mouse applications and pointers

•Pedometer/step counting

•Advanced system power management for mobile applications

•Optical image stabilization of camera modulesFree-fall detection and warranty logging

Target Devices:

•Smart phones, tablet and transformer PCs

•Game controllers, remote controls and pointing devices

•Head tracking devices

•Wearable devices, e.g. smart watches or augmented reality glasses

•Sport and fitness devices

•Cameras,camera modules

•Toys, e.g. toy helicopters