LSM6DSR datasheet(4/168 Pages) STMICROELECTRONICS

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Embedded low-power features

The LSM6DSR has been designed to be fully compliant with Android, featuring the following on-chip functions:

•

9 kbytes data buffering, data can be compressed two or three times

–

100% efficiency with flexible configurations and partitioning

–

Possibility to store timestamp

•

Event-detection interrupts (fully configurable):

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Free-fall

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Wakeup

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6D orientation

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Click and double-click sensing

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Activity/inactivity recognition

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Stationary/Motion detection

•

Specific IP blocks with negligible power consumption and high-performance:

–

Pedometer functions: step detector and step counters

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Tilt

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Significant Motion Detection

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Finite State Machine (FSM) for accelerometer, gyroscope, and external sensors

•

Sensor hub

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Up to 6 total sensors: 2 internal (accelerometer and gyroscope) and 4 external sensors

•

S4S data rate synchronization with external trigger for reduced sensor access and enhanced fusion

2.1

Tilt detection

The tilt function helps to detect activity change and has been implemented in hardware using only the

accelerometer to achieve targets of both ultra-low power consumption and robustness during the short duration of

dynamic accelerations.

The tilt function is based on a trigger of an event each time the device's tilt changes and can be used with

different scenarios, for example:

•

Triggers when phone is in a front pants pocket and the user goes from sitting to standing or standing to

sitting;

•

Doesn’t trigger when phone is in a front pants pocket and the user is walking, running or going up stairs.

2.2

Significant Motion Detection

The Significant Motion Detection (SMD) function generates an interrupt when a ‘significant motion’, that could be

due to a change in user location, is detected. In the LSM6DSR device this function has been implemented in

hardware using only the accelerometer.

SMD functionality can be used in location-based applications in order to receive a notification indicating when the

user is changing location.

LSM6DSR

Embedded low-power features

DS11976 - Rev 2

page 4/168

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