LSM6DS3US Datasheet, PDF (18/104 Pages) STMicroelectronics – iNEMO inertial module: always-on 3D accelerometer and 3D gyroscope

Pin description
LSM6DS3US
3.1
Pin connections
The LSM6DS3US offers the flexibility to connect the pins in order to have three different
mode connections and functionalities. In detail:
 Mode 1: I²C slave interface or SPI (3- and 4-wire) serial interface is available;
 Mode 2: I²C slave interface or SPI (3- and 4-wire) serial interface and I²C interface
master for external sensors connections are available;
 Mode 3^(a): I²C slave interface or SPI (3- and 4-wire) serial interface is available for the
application processor interface while an auxiliary SPI (3-wire) serial interface for
external sensor connections (i.e. camera module) is available.
Figure 2. LSM6DS3US connection modes
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In the following table each mode is described for the pin connection and function.
a. In the primary SPI connection, the gyroscope output data is available in registers 22h to 27h with user-selected
FS and ODR. In the auxiliary SPI connection, gyroscope output data is available in registers 22h to 27h
@ 3.3 kHz and FS = 250 dps.
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