LSM6DSTX datasheet(45/175 Pages) STMICROELECTRONICS

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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)

OCS_Aux

Leave unconnected

Auxiliary SPI 3/4-wire

interface enabled

Default: input with pull-

up. Pull-up is disabled if

bit OIS_PU_DIS = 1 in

PIN_CTRL (02h).

Default: input with pull-

up. Pull-up is disabled if

bit OIS_PU_DIS = 1 in

PIN_CTRL (02h).

Default: input without pull-

up (regardless of the value

of bit OIS_PU_DIS in

PIN_CTRL (02h))

SDO_Aux

Connect to Vdd_IO or

leave unconnected

Connect to Vdd_IO or

leave unconnected

Auxiliary SPI 3-

wire interface: leave

unconnected / Auxiliary

SPI 4-wire interface:

serial data output

(SDO_Aux)

Default: input with pull-

up. Pull-up is disabled if

bit OIS_PU_DIS = 1 in

PIN_CTRL (02h).

Default: input with pull-

up. Pull-up is disabled if

bit OIS_PU_DIS = 1 in

PIN_CTRL (02h).

Default: input without pull-

up. Pull-up is enabled if

bit SIM_OIS = 1 (Aux_SPI

3-wire) in UI_CTRL1_OIS

(70h) and bit OIS_PU_DIS =

0 in PIN_CTRL (02h).

I²C/SPI mode

selection

(1:SPI idle mode /

I²C communication

enabled;

0: SPI communication

mode / I²C disabled)

I²C/SPI mode selection

(1:SPI idle mode /

I²C communication

enabled;

0: SPI communication

mode / I²C disabled)

I²C/SPI mode selection

(1:SPI idle mode /

I²C communication

enabled;

0: SPI communication

mode / I²C disabled)

Default: input with pull-

up. Pull-up is disabled

if bit I2C_disable =

1 in CTRL4_C (13h)

and I3C_disable = 1 in

CTRL9_XL (18h).

Default: input with pull-

up. Pull-up is disabled

if bit I2C_disable =

1 in CTRL4_C (13h)

and I3C_disable = 1 in

CTRL9_XL (18h).

Default: input with pull-

up. Pull-up is disabled

if bit I2C_disable =

1 in CTRL4_C (13h)

and I3C_disable = 1 in

CTRL9_XL (18h).

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-

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-

Default: input without pull-up

1. Mode 3 is enabled when the OIS_EN_SPI2 bit in the UI_CTRL1_OIS (70h) / SPI2_CTRL1_OIS (70h) registers is set to 1. Mode 4 is enabled when both the OIS_EN_SPI2 bit and

the Mode4_EN bit in the UI_CTRL1_OIS (70h) / SPI2_CTRL1_OIS (70h) registers 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 Vdd_IO.

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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