LSM6DSV16BX datasheet(33/148 Pages) STMICROELECTRONICS

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Functionality

6.1

Operating modes

In the LSM6DSV16BX, the accelerometer and the gyroscope can be turned on/off independently of each other

and are allowed to have different ODRs and power modes.

The LSM6DSV16BX has three operating modes available:

•

only accelerometer active and gyroscope in power-down

•

only gyroscope active and accelerometer in power-down

•

both accelerometer and gyroscope sensors active with independent ODR and power mode

The accelerometer is activated from power-down by writing ODR_XL_[3:0] in CTRL1 (10h) while the gyroscope

is activated from power-down by writing ODR_G_[3:0] in CTRL2 (11h). For combo mode the ODRs are totally

independent.

In addition to the accelerometer mode above, a dedicated TDM output can be used for the audio accelerometer

output.

6.2

Accelerometer power modes

In the LSM6DSV16BX, the accelerometer can be configured in three different operating modes: power-down

mode, low-power mode and high-performance mode.

The operating mode selected depends on the value of the OP_MODE_XL_[2:0] bits in CTRL1 (10h).

If the value of the OP_MODE_XL_[2:0] bits is 000 (default), high-performance mode is valid for all ODRs (from

7.5 Hz up to 7.68 kHz).

In high-performance mode the analog anti-aliasing filter is active.

Low-power mode is available for lower ODRs (1.875 Hz, 15 Hz, 30 Hz, 60 Hz, 120 Hz, 240 Hz). The three

low-power modes are enabled by setting OP_MODE_XL_[2:0] to 100 (LPM1), 101 (LPM2), 110 (LPM3).

The embedded functions based on accelerometer data (free-fall, 6D, tap/double-tap, wake-up, activity/inactivity,

stationary/motion, step counter, step detection, significant motion, tilt) and the FIFO batching functionality are

supported in all modes.

LSM6DSV16BX

Functionality

DS13771 - Rev 2

page 33/148

LSM6DSV16BX Datasheet(PDF) 33 Page - STMicroelectronics