LSM6DSO datasheet(39/172 Pages) STMICROELECTRONICS

39 / 172 page

pin#

Name

Mode 1 function

Mode 2 function

Mode 3 / Mode 4 function

Pin status Mode 1

Pin status Mode 2

Pin status Mode 3/4 (1)

SCL

I²C/MIPI I3CSM serial clock

(SCL) / SPI serial port clock

(SPC)

I²C/MIPI I3CSM serial clock

(SCL) / SPI serial port clock

(SPC)

I²C/MIPI I3CSM serial clock

(SCL) / SPI serial port clock

(SPC)

Default: input without pull-up

SDA

I²C/MIPI I3CSM serial data

(SDA) / SPI serial data

input (SDI) / 3-wire

interface serial data output

(SDO)

I²C/MIPI I3CSM serial data

(SDA) / SPI serial data

input (SDI) / 3-wire

interface serial data output

(SDO)

I²C/MIPI I3CSM serial data

(SDA) / SPI serial data

input (SDI) / 3-wire

interface serial data output

(SDO)

Default: input without pull-up

1. Mode 3 is enabled when the OIS_EN_SPI2 bit in the CTRL1_OIS (70h) register is set to 1. Mode 4 is enabled when both the OIS_EN_SPI2 bit and

the Mode4_EN bit in the CTRL1_OIS (70h) register are set to 1.

2. INT1 must be set to '0' or left unconnected during power-on if the I²C/SPI interfaces are used.

Internal pull-up value is from 30 kΩ to 50 kΩ, depending on VDDIO.

Note:

The procedure to enable the pull-up on pins 2 and 3 is as follows:

1. From the primary I²C/I³C/SPI interface: write 40h in register at address 01h (enable access to the sensor hub registers)

2. From the primary I²C/I³C/SPI interface: write 08h in register at address 14h (enable the pull-up on pins 2 and 3)

3. From the primary I²C/I³C/SPI interface: write 00h in register at address 01h (disable access to the sensor hub registers)

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