LSM6DSM datasheet(16/113 Pages) STMICROELECTRONICS

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Embedded low-power features

LSM6DSM

16/113

DocID028165 Rev 2

Embedded low-power features

The LSM6DSM has been designed to be fully compliant with Android, featuring the following

on-chip functions:

 4 kbyte data buffering

–

100% efficiency with flexible configurations and partitioning

–

possibility to store timestamp

 Event-detection interrupts (fully configurable):

–

free-fall

–

wakeup

–

6D orientation

–

click and double-click sensing

–

activity / inactivity recognition

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

–

pedometer functions: step detector and step counters

–

tilt (Android compliant, refer to Section 2.1: Tilt detection for additional info

–

significant motion (Android compliant)



Sensor hub

–

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

sensors

 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 both the targets of ultra-low power consumption

and robustness during the short duration of dynamic accelerations.

It is based on a trigger of an event each time the device's tilt changes. For a more

customized user experience, in the LSM6DSM the tilt function is configurable through:



a programmable average window



a programmable average threshold

The tilt function 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 upstairs.

LSM6DSM 数据表(PDF) 16 Page - STMicroelectronics

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