STMicroelectronics X-NUCLEO-IKS01A3 User Manual

UM2559

User manual

Getting started with the X-NUCLEO-IKS01A3 motion MEMS and environmental

sensor expansion board for STM32 Nucleo

Introduction

The X-NUCLEO-IKS01A3 is a motion MEMS and environmental sensor evaluation board system.

It is compatible with the Arduino UNO R3 connector layout and features the LSM6DSO 3-axis accelerometer + 3-axis
gyroscope, the LIS2MDL
sensor, the LPS22HH pressure sensor, and the STTS751 temperature sensor.

The X-NUCLEO-IKS01A3 interfaces with the STM32 microcontroller via the I²C pin, and it is possible to change the default I²C
port.

3-axis magnetometer, the LIS2DW12 3-axis accelerometer, the HTS221 humidity and temperature

Figure 1. X-NUCLEO-IKS01A3 expansion board

UM2559 - Rev 3 - September 2020

For further information contact your local STMicroelectronics sales of

fice.

www.st.com

1 Getting started

1.1 Hardware requirements

UM2559

Getting started

The X-NUCLEO-IKS01A3 is designed to be used with STM32 Nucleo boards (visit www
information).

Figure 2. X-NUCLEO-IKS01A3 plugged on an STM32 Nucleo board

.st.com for further

The X-NUCLEO-IKS01A3 must be connected on the matching pins of any STM32 Nucleo board with the Arduino
UNO R3 connector

Note: X-NUCLEO-IKS01A3 components are ESD sensitive and, as the board has male/female pass-through

connectors, it is important to handle it with care to avoid bending or damaging the pins.

.

RELATED LINKS

See the X-CUBE-MEMS1 product page for firmware and related documentation

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2 System requirements

To complete the system setup, you need:

•

a Windows® (7, 8, 10) PC

• a USB type A to mini-B USB cable to connect the STM32 Nucleo to the PC

• board firmware and software package (X-CUBE-MEMS1) installed on the user PC

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System requirements

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3 Hardware description

The board lets you test the functionality of the motion MEMS accelerometer, gyroscope and magnetometer, and
environmental humidity

It also allows all LSM6DSO sensor hub function testing.

The board features:

• Operating range: 3.3 V, 250 mA

• LSM6DSO: MEMS 3D accelerometer (±2/±4/±8/±16 g) + 3D gyroscope (±125/±250/±500/±1000/±2000 dps)

• LIS2MDL: MEMS 3D magnetometer (±50 gauss)

• LIS2DW12: MEMS 3D accelerometer (±2/±4/±8/±16 g)

• LPS22HH: MEMS pressure sensor, 260-1260 hPa absolute digital output barometer

• HTS221: capacitive digital relative humidity and temperature

• STTS751: Temperature sensor (–40 °C to +125 °C)

• DIL 24-pin socket available for additional MEMS adapters and other sensors

• Free comprehensive development firmware library and example for all sensors compatible with STM32Cube
firmware

• I²C sensor hub features on LSM6DSO available

• Compatible with STM32 Nucleo boards

• Equipped with Arduino UNO R3 connector

• RoHS compliant

• WEEE compliant

Each device has a separate power supply to allow power consumption measurement of every sensor.

The expansion board is power supply compatible with STM32 Nucleo boards: it mounts an LDO to generate 1.8 V
for all the MEMS sensors except for the STTS751, which is supplied by a separate LDO generating 2.5 V.

All signals between the sensors and the main board are translated by a level shifter.

, temperature and pressure sensors, via the I²C communication bus.

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Hardware description

3.1 Default solder bridge configuration

The user can configure several aspects of the X-NUCLEO-IKS01A3 through several solder bridges which can be
left open (not mounted) or closed (mounted) to configure dif

Table 1. Default solder bridge default configuration (device to I²C bus connection)

Device BUS Solder bridge (default) Solder bridge (not mounted)

LIS2DW12 I²C2 SB3, SB13 -

LSM6DSO I²C2 SB7, SB11 -

HTS221 I²C1 SB24, SB31 -

LPS22HH I²C1 SB29, SB32 -

STTS751 I²C1 SB26, SB27 -

LIS2MDL I²C1 SB33, SB34 -

STM32 Nucleo I²C2 SB35, SB36 -

DIL24 Adapter I²C1 SB12, SB19 SB1, SB4, SB6, SB10, SB14, SB16, SB18, SB20, SB21, SB22

*DIL24 Adapter I²C2 SB16, SB21 SB1, SB4, SB6, SB10, SB14, SB12, SB18, SB20, SB19, SB22

*DIL24 Adapter I²Cx SB14, SB20 SB1, SB4, SB6, SB10, SB12, SB16, SB18, SB19, SB21, SB22

ferent hardware settings.

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Table 2. Device I²C address

STM32 Nucleo

board

Arduino UNO R3

ST morpho

LSM6DSO

LIS2DW12 LIS2MDL

LPS22HH

HTS221

STTS751

DIL24

I²C2

I²C1

Device Solder bridge (non default) I²C address default

LIS2DW12 SB8 32h

LIS2DW12

LSM6DSO SB15 D6h

LSM6DSO

LIS2MDL - 3C

STTS751 - 94h

LPS22HB SB13 BAh

LPS22HB SB14 B8h

HTS221 - BEh

1.

not mounted by default

SB9

SB17

(1)

(1)

30h

D4h

Note: Other SBs mounted by default are SB40 to SB49 (STM32 Nucleo GPIO INT), SB23, SB25, SB39

Other SBs not mounted by default are SB38, SB37, SB50

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Block diagram

3.2 Block diagram

The LSM6DSO has an I²C sensor hub which allows it to behave as the I²C master for other slave devices
connected via an I²C

the LSM6DSO sensor hub.

Mode 1: standard I²C bus connection (all sensors)

In standard I²C mode, all devices are connected to an external main board via the same I²C bus.

The board configuration is:

• JP7: 1-2, 3-4 (I²C1 = I²C2, I²Cx=GND)

• JP8: 1-2, 3-4 (I²C1 = I²C2, I²Cx=GND)

bus. Various configurations are possible for different I²C bus connections with or without

aux

Figure 3. X-NUCLEO-IKS01A3 standard I²C

UM2559 - Rev 3

Mode 2: LSM6DSO I²C sensor hub (all sensors)

In this sensor hub I²C mode, the LSM6DSO is connected to an external main board by an I²C bus; all other
devices except LIS2DW12 are slaves connected to LSM6DSO via I²C

aux

.

The board configuration is:

•

JP7: 2-3 (I²C1 = I²Cx)

• JP8: 2-3 (I²C1 = I²Cx)

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STM32 Nucleo

board

Arduino UNO R3

ST morpho

LSM6DSO

LIS2DW12

LIS2MDL

LPS22HH

HTS221

STTS751

DIL24

I²C2

I²C1

I²Caux

(sensor Hub)

STM32 Nucleo

board

Arduino UNO R3

ST morpho

LSM6DSO

LIS2DW12

LIS2MDL

LPS22HH

HTS221

STTS751

DIL24

I²C2

I²C1

I²Caux
(sensor Hub)

STM32 Nucleo

board

Arduino UNO R3

ST morpho

LSM6DSO

LIS2DW12

LIS2MDL

LPS22HH

HTS221

STTS751

DIL24

I²C2

I²C1

I²Caux
(sensor Hub)

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Block diagram

Figure 4. X-NUCLEO-IKS01A3 LSM6DSO I²C sensor hub

Mode 3: DIL24 plus LSM6DSO I²C sensor hub (all sensors, not DIL24)

In this sensor hub I²C mode, the LSM6DSO and the DIL24 adapter are connected to an external main board by
an I²C bus; all other devices except LIS2DW12 are slaves of the LSM6DSO via I²C

The board configuration is:

•

JP7: 2-3 (I²C1 = I²Cx)

• JP8: 2-3 (I²C1 = I²Cx)

DIL24 adapter (to I²C2): SB16, SB21

Not mounted: SB6, SB10, SB12, SB14, SB18, SB19, SB20, SB22

aux

.

Figure 5. X-NUCLEO-IKS01A3 DIL24, LSM6DSO I²C sensor hub (all sensors)

Mode 4: LSM6DSO plus DIL24 I²C sensor hub (all sensors)

In this sensor hub I²C mode, the LSM6DSO and the DIL24 adapter are connected to an external main board by
an I²C bus; all other devices except LIS2DW12 are slaves of the DIL24 adapter via I²C

The board configuration is:

JP7: 2-3 (I²C1 = I²Cx)

•

• JP8: 2-3 (I²C1 = I²Cx)

DIL24 adapter (to I²C2): SB16 SB21

Not mounted: SB6, SB10, SB12, SB14, SB18, SB19, SB20, SB22

Figure 6. X-NUCLEO-IKS01A3 LSM6DSO, DIL24, I²C sensor hub (all sensors)

aux

.

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