STMicroelectronics UM3239 Motion Mems and Environmental Sensor Expansion Board User Manual

UM3239
User manual
Getting started with the X-NUCLEO-IKS4A1 motion MEMS and environmental
sensor expansion board for STM32 Nucleo
Introduction
The X-NUCLEO-IKS4A1 is a motion MEMS and environmental sensor evaluation board kit consisting of the main board XNUCLEO-IQS4A1, which hosts the motion MEMS and environmental sensors, and the detachable add-on board STEVALMKE001A, which hosts the Qvar swipe electrodes.
It is compatible with the Arduino UNO R3 connector layout and features the LSM6DSO16IS and LSM6DSV16X MEMS 3D
accelerometers, the LIS2MDL 3-axis magnetometer, the LIS2DUXS12 3-axis accelerometer, the LPS22DF MEMS pressure
sensor, the SHT40AD1B humidity and temperature sensor, and the STTS22H temperature sensor.
The X-NUCLEO-IKS4A1 interfaces with the STM32 microcontroller via the I²C pin or, for external sensors mounted on DIL24
adaptor, SPI Pins.
Figure 1. X-NUCLEO-IKS4A1 expansion board
UM3239 - Rev 1 - October 2023
For further information contact your local STMicroelectronics sales office.
www.st.com
UM3239
Getting started
1
Getting started
1.1
Hardware requirements
The X-NUCLEO-IKS4A1 is designed to be used with STM32 Nucleo boards (visit www.st.com for further
information).
Figure 2. X-NUCLEO-IKS4A1 plugged on an STM32 Nucleo board
The X-NUCLEO-IKS4A1 must be connected on the matching pins of any STM32 Nucleo board with the Arduino
UNO R3 connector.
Note:
X-NUCLEO-IKS4A1 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
UM3239 - Rev 1
page 2/23
UM3239
System requirements
2
System requirements
To complete the system setup, you need:
•
•
•
UM3239 - Rev 1
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
page 3/23
UM3239
Hardware description
3
Hardware description
The board lets you test the functionality of the motion MEMS accelerometer, gyroscope and magnetometer, and
environmental humidity, temperature and pressure sensors, via the I²C communication bus.
It also allows complete testing of all LSM6DSO16IS and LSM6DSV16X functionalities and Qvar touch and swipe
gestures. There is also the possibility to attach the STHS34PF80 IR sensor to enable presence and motion
detection applications.
The board features:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
LSM6DSO16IS: MEMS 3D accelerometer (±2/±4/±8/±16 g) + 3D gyroscope (±125/±250/±500/±1000/±2000
dps) with ISPU (Intelligent Processing Unit)
LIS2MDL: MEMS 3D magnetometer (±50 gauss)
LIS2DUXS12: ultralow power MEMS 3D accelerometer (±2/±4/±8/±16 g) with Qvar, AI, & anti-aliasing
LPS22DF: Low-power and high-precision MEMS pressure sensor, 260-1260 hPa absolute digital output
barometer
SHT40AD1B
STTS22H: Low-voltage, ultralow power, 0.5 °C accuracy temperature sensor (-40°C to +125°C)
LSM6DSV16X: MEMS 3D accelerometer (±2/±4/±8/±16 g) + 3D gyroscope
(±125/±250/±500/±1000/±2000/±4000 dps) with embedded sensor fusion, AI, Qvar
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
Equipped with Qvar touch/swipe electrode
I²C sensor hub features on LSM6DSO and LSM6DSV16X available
MIPI I3C® compatibility for communication with LIS2DUXS12, LSM6DSV16X and LPS22DF
Compatible with STM32 Nucleo boards
Equipped with Arduino UNO R3 connector
Equipped with industrial connector for IR sensor (STHS34PF80) application development. It can be
connected at the same time of external MEMS through DIL24 adapter
Available interface for external camera module applications coupled with LIS2DUXS12 through aux SPI
(3/4 w)
RoHS compliant
WEEE compliant
UKCA 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 external sensor mounted on DIL24 adapter, which can be supplied both
from 1.8 V and 3.3 V (main supply from Nucleo board).
All signals between the sensors and the main board are translated by a level shifter.
3.1
Default solder bridge configuration
The user can configure several aspects of the X-NUCLEO-IKS4A1 through several solder bridges which can be
left open (not mounted) or closed (mounted) to configure different hardware settings.
UM3239 - Rev 1
page 4/23
UM3239
Block diagram
3.2
Block diagram
The LSM6DSO16IS and the LSM6DSV16X have an I²C sensor hub that allows them to behave as the I²C master
for other slave devices connected via an I²Caux bus. Various bus configurations are possible to select the I²C
master of the environmental/DIL24 sensors.
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:
•
•
J4: 1-2, 11-12 (STM_SDA = SENS_SDA, HUB_SDx = GND)
J5: 1-2, 11-12 (STM_SCL = SENS_SCL, HUB_SCx = GND)
Figure 3. X-NUCLEO-IKS4A1 standard I²C
Mode 2: LSM6DSO16IS I²C sensor hub (all sensors)
In this sensor hub I²C mode, it is possible to power-up the 6-axes IMU (Inertial Measurement Unit) functionalities
by collecting external data through a direct control of the on-board environmental sensors (temperature, pressure
and magnetometer) and external sensor (DIL24) through the auxiliary I²Cz bus "SENS_I2C". LSM6DSV16X,
LIS2DUXS12 and SHT40AD1B remains connected to the main bus "uC_I2C" coming from the external board.
The board configuration is:
•
•
J4: 5-6 (HUB2_SDx = SENS_SDA)
J5: 5-6 (HUB2_SCx = SENS_SCL)
Figure 4. X-NUCLEO-IKS4A1 LSM6DSO16IS I²C sensor hub
UM3239 - Rev 1
page 5/23
UM3239
Block diagram
Mode 3: LSM6DSV16X I²C sensor hub
In this sensor hub, it is possible to power-up the 6-axes IMU (Inertial Measurement Unit) functionalities by
collecting external data through a direct control of the on-board environmental sensors (temperature, pressure
and magnetometer) and external sensor (DIL24) through the auxiliary I2C bus "SENS_I2C". LSM6DSO16IS,
LIS2DUXS12 and SHT40AD1B remains connected to the main bus "uC_I2C" coming from the external board.
The board configuration is:
•
•
J4: 7-8 (HUB1_SDx = SENS_SDA)
J5: 7-8 (HUB1_SDx = SENS_SDA)
DIL24 adapter (to I²C2): SB16, SB21
Not mounted: SB6, SB10, SB12, SB14, SB18, SB19, SB20, SB22
Figure 5. LSM6DSV16X I²C sensor hub
Mode 4: DIL24 I²C sensor hub (all sensors)
In case a sensor with sensor hub embedded functionality is mounted to the board through DIL24 adapter, it is
possible to exploit this functionality as for LSM6DSO16IS and the LSM6DSV16X.
In this configuration, may be necessary to connect the DIL24 to the external board through SPI lines in order to
avoid an address conflict on I2C bus with the LSM6DSO16IS and the LSM6DSV16X. This is done by changing
the SBx configuration.
The board configuration is:
•
•
J4: 9-10 (DIL_SDx = SENS_SDA)
J5: 9-10 (DIL_SDx = SENS_SDA)
Figure 6. X-NUCLEO-IKS4A1 DIL24, I²C sensor hub (all sensors)
Mode 5: LSM6DSO16IS as Qvar controller
In this configuration, it is possible to use the equipped Qvar swipe electrode (by plugging it on JP6 and JP7
connectors) through the LSM6DSO16IS.
The board configuration is:
•
•
UM3239 - Rev 1
J4: 3-4 (HUB1_SDx = QVAR1)
J5: 3-4 (HUB1_Scx = QVAR2)
page 6/23
UM3239
Sensor I²C address selection
3.3
Sensor I²C address selection
Most sensors allow I²C address LSB selection by pulling the SD0 pin low or high. The board has solder bridges to
control SD0 level.
Table 1. Solder bridges for I²C address
Address in bold are the default I2C addresses
Sensor
SD0 low
STTS22H (U8)
3.4
SD0 high
ADD= 71h
LIS2DUXS12 (U5)
SB19 ADD=31h
SB20 ADD=33h
LSM6DSO16IS (U9)
SB35 ADD=D5h
SB34 ADD=D7h
LPS22DF (U6)
SB31 ADD=B9h
SB29 ADD=BBh
LIS2MDL (U7)
ADD =3Ch
ADD =3Ch
SHT40AD1B (U10)
ADD= 89h
ADD= 89h
DIL24 Adapter (J1)
SB43/SB44
SB41/SB42
LSM6DSV16X (U4)
SB17 ADD=D5h
SB15 ADD=D7h
Sensor current consumption measurement
The X-NUCLEO-IKS4A1 expansion board is equipped with OR resistors that allow separate current consumption
measurement for each sensor.
To measure current consumption, connect an ammeter to the appropriate pads.
Note:
As the sensors have very low current consumption, you should set a suitable range and use an ammeter with
low burden voltage.
Table 2. Resistors/jumpers for current consumption measurement
3.5
Sensor
Resistor/jumper
LIS2MDL (U7)
R18
LSM6DSO16IS (U9)
R21
SHT40AD1B (U10)
R22
LIS2DUXS12 (U5)
R16
STTS22H (U8)
R19
LPS22DF (U6)
R32
DIL24 Adapter (J1)
JP5
LSM6DSV16X
R33
Sensor disconnection
To disconnect a sensor, you should disconnect the I²C bus as well as the power supply. See the table below for
the relevant jumpers and solder bridges.
Table 3. Link between sensors, jumpers and I²C solder bridges
UM3239 - Rev 1
Sensor
SDA
SCL
LIS2MDL (U7)
SB30
SB26
LSM6DSO16IS (U9)
SB38
SB36
SHT40AD1B (U10)
SB39
SB37
LIS2DUXS12 (U5)
SB22
SB16
page 7/23
UM3239
Adapter board for DIL24 socket
3.6
Sensor
SDA
SCL
STTS22H (U8)
SB33
SB32
LPS22DF (U6)
SB28
SB25
DIL24 Adapter (J1)
SB47, SB49, SB48
SB51, SB53, SB52
LSM6DSV16X
SB21
SB18
Adapter board for DIL24 socket
An additional sensor can be connected as an adapter board to J6 DIL24 socket.
As there are a few different interrupt signal assignments for DIL24 pins, the appropriate pin can be selected using
the J2 header.
Related links
Please visit the ST website to find other available sensors
3.7
Connectors
Table 4. Arduino R3 UNO connectors
Connector
CN5
CN6
CN8
CN9
Pin(1)
Signal
7
GND
9
I²C SDA
10
I²C SCL
2
3.3 V
4
3.3 V
6
GND
7
GND
8
N.C.[FT1]
3
LIS2MDL DRDY
4
LIS2DUXS12 INT
5
STTS22H INT
6
LSM6DSO16IS INT1
3
USER INT
4
SPI CLK
5
LSM6DSV16X INT2
6
LSM6DSV16X INT1
7
LPS22DF INT1
8
LSM6DSO16IS INT2
1. unlisted pins are not connected.
UM3239 - Rev 1
page 8/23
UM3239
Connectors
Table 5. ST morpho connectors
Connector
CN7
CN10
Pin(1)
Signal
12
3.3 V
16
3.3 V
20
GND
22
GND
32
LIS2MDL DRDY
34
LIS2DUXS12 INT
36
STTS22H INT
38
LSM6DSO16IS INT1
3
I²C SCL
5
I²C SDA
23
LSM6DSO16IS INT2
25
LPS22DF INT1
27
LSM6DSV16X INT1
29
LSM6DSV16X INT2
31
SPI CLK
33
USER INT
1. The unlisted pins are not connected.
UM3239 - Rev 1
page 9/23
Schematic diagrams
Figure 7. X-NUCLEO-IKS4A1 circuit schematic (1 of 4)
U_Arduino_Nucleo Connectors
Arduino_Nucleo Connectors.SchDoc
1V8
3V3
1V8
U_Sensors
Sensors.SchDoc
STHS34PF80_INT
LPS22DF_INT
STTS22H_INT
LIS2MDL_DRDY
LIS2DUXS12_INT2
LIS2DUXS12_INT1
LSM6DSV16X_INT1
LSM6DSV16X_INT2
LSM6DSO16IS_INT1
LSM6DSO16IS_INT2
LSM6DSO16IS_INT1
LSM6DSO16IS_INT2
U_Adapter Board
Adapter Board.SchDoc
1V8
STHS34PF80_INT
LPS22DF_INT
STTS22H_INT
LIS2MDL_DRDY
LIS2DUXS12_INT2
LIS2DUXS12_INT1
LSM6DSV16X_INT1
LSM6DSV16X_INT2
SENS_I2C
HUB2_I2C
HUB2_I2C
STM_I2C
M_SA0/DEN
M_SA0/DRDY
M_INT_Pin24
M_INT_Pin17
M_INT_Pin16
M_INT2
M_INT1
Q2
Q1
STM_I2C
M_INT1
M_INT2
M_INT_Pin16
M_INT_Pin17
M_INT_Pin24
M_SA0/DRDY
M_SA0/DEN
SPI
QVAR2
QVAR1
I2C2
DIL_I2C
SENS_I2C
SPI
DIL24_I2C
3V3
UM3239 - Rev 1
4
UM3239
Schematic diagrams
page 10/23
UM3239 - Rev 1
Figure 8. X-NUCLEO-IKS4A1 circuit schematic (2 of 4)
Arduino & Morpho Connectors
GND
Header 19x2
SB9
SB12
SPI_MISO_O
SPI_MOSI_O
SPI_CS_O
CN9
8
7
6
5
4
3
2
1
SB3
SPI_CK_O
SB5
SB6
I2C2 Vio header
SDA
SCL
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
SCL
SDA
4
3
2
1
SB2
CN10
10
9
8
7
6
5
4
3
2
1
Vio
J1
Morpho connector
1
2
3
Arduino Connector
1
2
3
4
5
6
JP2
LIS2DUXS12_INT_O
CN8
GND
JP1
LIS2MDL_DRDY_O
1
2
3
4
5
6
7
8
LIS2MDL_DRDY_O
Morpho connector
CN6
Arduino Connector
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
LIS2DUXS12_INT_O
SCL
SDA
3V3
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
R2
4k7
Arduino Connector
R1
4k7
3V3
1
2
3
Vio
5V
Arduino Connector
CN7
SB1
CN5
Vio
3V3
Header 19x2
SB4
USER_INT_O
LSM6DSV16X_INT2_O
STTS22H_INT_O LSM6DSV16X_INT1_O
LSM6DSO16IS_INT1_O LPS22DF_INT_O
LIS2DUXS12_INT2_O
LSM6DSO16IS_INT2_O
BT_Irq
SB7
SB8
SB10
SB11
SB13
SB14
Vout = 0.8*(1+R3/R4)
U1
LDK130M-R
1
3V3
3
C3
100nF
Vout
EN
Adj
GND
1V8
5
4
1V8
R3
15k
C2
10uF
C5
100nF
2
C4
10uF
Vin
GND
R4
12k
GND
GND
GND
GND
GND
C6
100nF
C8
100nF
1V8
USER_INT routing selector
GND
Vio
1
3
5
7
9
11
13
15
1V8
19
2
4
6
8
10
12
14
16
M_INT_Pin24
M_INT1
M_INT2
M_INT_Pin16
M_INT_Pin17
STHS34PF80_INT
M_SA0/DRDY
M_SA0/DEN
LSM6DSV16X_INT2_O
LIS2DUXS12_INT2_O
LSM6DSO16IS_INT2_O
LPS22DF_INT_O
LSM6DSV16X_INT1_O
USER_INT_O
LSM6DSO16IS_INT1_O
STTS22H_INT_O
20
18
17
16
15
14
13
12
TMM-108-01-G-D
1V8
10
VCC(B)
VCC(A)
B1
B2
B3
B4
B5
B6
B7
B8
A1
A2
A3
A4
A5
A6
A7
A8
OE
GND
EPAD
100nF
C9
100nF
Vio
GND
1V8
Vio
U2
J2
USER_INT
C7
1V8
Vio
U3
2
19
1
3
4
5
6
7
8
9
USER_INT
LSM6DSV16X_INT2
LIS2DUXS12_INT2
LSM6DSO16IS_INT2
LPS22DF_INT
LSM6DSV16X_INT1
LSM6DSO16IS_INT1
STTS22H_INT
11
21
LIS2MDL_DRDY_O
LIS2DUXS12_INT_O
SPI_CK_O
SPI_MISO_O
SPI_MOSI_O
SPI_CS_O
SCL
SDA
1V8
NXS0108BQX
20
18
17
16
15
14
13
12
10
VCC(B)
VCC(A)
B1
B2
B3
B4
B5
B6
B7
B8
A1
A2
A3
A4
A5
A6
A7
A8
OE
GND
EPAD
2
LIS2MDL_DRDY
LIS2DUXS12_INT1
1
3
4
5
6
7
8
9
SPI
SCK
MISO
MOSI
CS
I2C_SCL2
I2C_SDA2
11
21
SPI
I2C
SCL
SDA
I2C2
NXS0108BQX
GND
GND
UM3239
Schematic diagrams
page 11/23
Accelerometer
R32
Accelerometer + Gyroscope (HUB 1)
0R
2
INT2 - QV2
CS
I2C ADDw = 32h
I2C ADDw = 30h
3
SB22
4
ALT INT
SDA/SDI/SDO
5
U5
LIS2DUXS12
LIS2DUXS12_INT2
4
9
LSM6DSV16X_INT1
7
LSM6DSV16X_INT2
1
2
JP3
LSM6DSV16XTR
R14
4k7
SENS_SDA
SDO_AUX
OCS_AUX
1
2
3
4
5
OCS_AUX
SDO_AUX
SENS_SCL
Pressure sesnsor
11
12
4
NC
1V8
CS
GND
SDA/SDI/SDO
C19
I2C ADDw = B8h
LPS22DF_INT
SB31
INT/DRDY
LIS2MDL_DRDY
C18
R19
Temperature sesnsor
U8
R20
I2C ADDw = 70h 0R
3
Accelerometer + Gyroscope (HUB 2)
4
SENS_SCL
1
STM_SDA
SB39
3
SCL
SDA
VSS
SHT40-AD1B-R3
4
6
VDD
AL/INT
LSM6DSO16IS_INT2
9
SB40
HUB2_SCx
HUB2_SDx
C22
100nF
LPS22DF_INT
1
2
JP4
3
2
SCL
SDA
7
GND
5
6
GND
I2C ADDw = D6h
INT1
VDD
INT2
SDO / SA0
MSCL
CS
MSDA
SCL
SDA
8
SB34
C21
100nF
STTS22H_INT
STTS22H
C20
10uF
SB35
1
SDA ROUTING
12
I2C ADDw = D4h
13
14
2
ADDR
7
4
LSM6DSO16IS_INT1
VDD
VDDIO
U9
RES
2
VDD
1
SB33
RES
STM_SCL
SB37
SB32
SENS_SDA
0R
11
0R
R21
10
R22
U10
VDD
0R
100nF
220nF
R23
4k7
STM_SDA
STM_SCL
SB27
SHF-106-01-L-D-SM
LIS2MDL_DRDY
R35
4k7
Relative humidity + Temperature
SB24
I2C ADDw= B4h
7
LPS22DF_INT
VDD
2
4
6
8
10
12
2
4
6
8
10
12
8
PAD
3
SB30
STHS34PF80_INT
1
3
5
7
9
11
GND
LPS22DF
I2C ADDw = 3Ch
SENS_SDA
100nF
VDD
0R
9
1
3
5
7
9
11
C16
0R
5
CS
SB29
R18
10
1V8_IO
HUB2_I2C
SDA
J3
R17
VDD
C15 100nF
LIS2MDL
NC
NC
2
U7
SCL
C1
1
GND
SENS_SCL
5
SB26
5
6
SDO/SA0
C17
100nF
7
SENS_I2C
I2C
Infra-red sesnsor connector
C14 10uF
10
SCL
HUB2_SDx
DIL24_I2C
Magnetometer sesnsor LIS2MDL
VDD
6
I2C ADDw = BAh
SDA/SDI/SDO
RES
SB28
INT_DRDY
GND
4
SENS_SDA
SCL/SPC
3
2
GND_IO
SB25
VDD
8
SENS_SCL
VDD_IO
9
1
0R
SCL
I2C
SDA
HUB2_SCx
SDA
STM_I2C
SDA
SENS_SDA
SCL
DIL_SDx
SCL
STM_SDA
1
2
3
4
5
I2C
DIL_SCx
I2C
STM_SCL
J7
HUB1_SCx
HUB1_SDx
M50-3530542
R16
1V8
I2C ADDw = D4h
2
SDx/AH1/QVAR1
3
SCx/AH2/QVAR2
INT1
INT2
SB17
1
11
10
R13
4k7
SENS_SCL
SDO/SA0
SDO_AUX
OCS_AUX
CS
SCL
SDA
SB23
LIS2MDL_DRDY
U6
VDD
R12
4k7
HUB2_SDx
12
13
14
SB18
STM_SCL
STM_SDA
SB21
8
VDD
R11
4k7
STM_SCL
R15
4k7
VDD
R10
4k7
HUB2_SCx
LIS2DUXS12_INT1
11
6
Res
STM_SDA
GND
SDO/SA0
12
SB15
STM_SDA
Vdd
INT1 - QV1
8
GND
SCL/SPC
VDD
GND
1
SB20
VDD_IO
7
SB19
5
R9
4k7
C12
10uF
C13
100nF
I2C ADDw = D6h
U4
R34
4k7
6
STM_SCL
0R
9
10
SB16
VDD
R33
VDD
C10
10uF
C11
100nF
Vdd_IO
VDD
GND
UM3239 - Rev 1
Figure 9. X-NUCLEO-IKS4A1 circuit schematic (3 of 4)
STM_SCL
SB36
HUB1_SDx
STM_SDA
SB38
LSM6DSO16IS
SCL ROUTING
J4
HUB2_SDx
DIL_SDx
STM_SDA
1
3
5
7
9
11
2
4
6
8
10
12
J5
HUB1_SCx
QVAR1
SENS_SDA
HUB2_SCx
DIL_SCx
STM_SCL
1
3
5
7
9
11
TMM-106-01-G-D
2
4
6
8
10
12
QVAR2
SENS_SCL
TMM-106-01-G-D
I2C ADDw = 88h
I2C routing description
I2C BUS ROUTING + QVAR
- Place the shunt in order to select the master for the environmental
sensors U6,U7,U8 and Adapter, or to enable the Qvar electrode control.
- HUB1 must be connected to GND if not used!
UM3239
Schematic diagrams
page 12/23
R25
4k7
DIL24_SCL
DIL24_SDA
1V8_IO
R24
4k7
3V3_IO 1V8_IO
JP5
DIL24 Socket for Adapter Board
1V8
SB41
1
2
3
UM3239 - Rev 1
Figure 10. X-NUCLEO-IKS4A1 circuit schematic (4 of 4)
3V3
R26
1V8_IO
1V8_IO
SB42
2k2
3V3_IO
GND
SB43
R27
J6
1V8_IO
DIL24_SCL
DIL24_SDA
I2C
SCL
DIL_I2C
SDA
DIL24_SCL
DIL24_SDA
1
2
3
4
5
6
7
8
9
10
11
12
M_INT_Pin24
M_SA0/DEN
M_SA0/DRDY
24
23
22
21
20
19
18
17
16
15
14
13
SB46
M_INT_Pin17
M_INT_Pin16
INT2
INT1
SPI
CS
MISO
SPI
MOSI
SCK
SCL
SDA
I2C
SCL
SENS_I2C
SDA2
SPI_CK
SB51
SB53
SPI_MOSI
SPI_CK
SB54
SCL1
HUB2_SCL
SCL2
SPI_CS
SB55
I2C
STM_I2C
HUB2_SDA
SB50
SB52
SPI_MISO
GND
SDA1
SB49
SPI_CS
SDA
I2C
SCL
HUB2_I2C
SDA
SCL2
1V8_IO
SB56
SDA2
1V8_IO
SCL1
2 x Header 3pin SMD for QVAR electrode
SDA1
QVAR Swipe electrode
HUB2_SCL
HUB2_SDA
1V8_IO
Header 3pin SMD for QVAR electrode
JP6
1
2
3
R28
4k7
GND
D1
ESDAXLC6
Q2
C23
220pF
QVAR1
1
2
3
1
2
3
VDD_QVAR
QVAR1
GND
GND_QVAR
C24
100nF
1V8_IO
M_INT_Pin24
M_INT_Pin17
M_INT_Pin16
INT2
INT1
M_SA0/DRDY
M_SA0/DEN
1V8_IO
SPI_MISO
SPI_MOSI
SB47
SB48
DIL24 Socket
GND
SB44
2k2
SB45
M_INT_Pin24
M_INT_Pin17
M_INT_Pin16
M_INT2
M_INT1
M_SA0/DRDY
M_SA0/DEN
JP7
VDD_QVAR
VDD_QVAR
R5
R6
10M
10M
QVAR1
QVAR2
GND
1
2
3
Header 3pin SMD for QVAR electrode
R29
4k7
D2
ESDAXLC6
Q1
C25
220pF
GND
QVAR2
1
2
3
1
2
3
VDD_QVAR
QVAR2
R7
R8
10M
10M
GND_QVAR
GND_QVAR
GND
GND_QVAR
GND
UM3239
Schematic diagrams
page 13/23
UM3239
Bill of materials
5
Bill of materials
Table 6. X-NUCLEO-IKS4A1 bill of materials
Item Quantity Reference
UM3239 - Rev 1
Part / value
Description
Manufacturer
Part number
TDK
C1005C0G2A221J050BA
1
2
C23, C25
220pF
Multilayer Ceramic
Capacitors 220pF
±5% 100V C0G
SMD 0402
2
6
C2, C4,
C10, C12,
C14, C20
10uF
CAP CER 0603
10uF 6.3V X5R
20%
Walsin
0603X106M6R3CT
3
12
C3, C5,
C6, C7,
C8, C9,
C11, C13,
C15, C16,
C17, C18,
C21, C22
100nF
CAP CER 0603
100nF 25V X7R
10%
MULTICOMP
MC0603B104K250CT
4
1
C19
220nF
CAP CER 0603
220nF 25V X7R
10%
KEMET
C0603X224K4RACTU
5
1
CN5
1x10 Pin elevated
socket
Samtec
ESQ-110-24-T-S
6
2
CN9, CN6
1x8 Pin elevated
socket
Samtec
ESQ-108-24-T-S
7
1
CN8
1x6 Pin elevated
socket
Samtec
ESQ-106-24-T-S
Trans Voltage
Suppressor Diode,
STMicroelectronics
40W, Bidirectional,
1 Element, Silicon
8
2
D1, D2
SOD-882
ESDAXLC6-1BT2
9
1
J1
Header 4
MULTICOMP
2211S-04G
Adam Tech
2PH2-16-UA
10
1
J2
16 Position, Dual Row, Shrouded
Terminal Strip,
2mm pitch
11
1
J3
12 Position, Dual Row, Shrouded
Terminal Strip,
2mm pitch
Samtec
SHF-106-01-L-D-SM
12
2
J4, J5
12 Position, Dual Row, Shrouded
Terminal Strip,
2mm pitch
Adam Tech
2PH2-12-UA
13
1
J6
Adapter DIL24
E-TEC
2BL1-036-G-700-01
14
5
JP1, JP2,
JP5, JP6,
JP7
Header 3
MULTICOMP
2211S-03G
15
2
JP3, JP4
Header 1x2 pins,
2.54mm, stright
MULTICOMP
2211S-02G
16
2
QVAR1,
QVAR2
Header_3pin_SMD
GCT
BG125-03-A-1-1-0440-ND
page 14/23
UM3239
Bill of materials
Item Quantity Reference
Description
Manufacturer
Part number
4k7
RES 0603 4k7 1%
1/16W, RESISTOR
YAGEO
RC0603FR-074K7L
17
15
R1, R2,
R9, R10,
R11, R12,
R13, R14,
R15, R23,
R24, R25,
R28, R29,
R34
18
1
R3
15k
RES 0603 15k 1%
1/16W, RESISTOR
YAGEO
RC0603FR-1315KL
19
1
R4
12k
RES 0603 12k 1%
1/16W, RESISTOR
YAGEO
RC0603FR-1312KL
20
9
R32, R33,
R16, R17,
R18, R19,
R20, R21,
R22
0R
RES 0603 0R0 1%
1/16W
YAGEO
RC0603FR-070RL
21
2
R26, R27
2k2
RES 0603 2k2 1%
1/16W
YAGEO
RC0603FR-132K2L
22
4
R5, R6,
R7, R8
10M
RES Thick Film,
10MΩ, 1%, 0.1W,
100ppm/°C, 0603
YAGEO
RC0603FR-0710ML
40
SB1, SB2,
SB4, SB5,
SB6, SB7,
SB8, SB9,
SB10,
SB11,
SB12,
SB14,
SB15,
SB16,
SB18,
SB20,
SB21,
SB22,
SB23,
SB24,
SB25,
SB26,
SB27,
SB28,
SB29,
SB30,
SB32,
SB33,
SB35,
SB36,
SB37,
SB38,
SB39,
SB40,
SB42,
SB44,
SB47,
SB51,
SB55,
SB56
0R
RES 0603 0R0 1%
1/16W
YAGEO
RC0603FR-070RL
23
24
UM3239 - Rev 1
Part / value
1
U1
SOT23-5L
LDO Voltage
Regulators 300mA
STMicroelectronics
Low Quiescent
Crnt low noise
LDO
LDK130M-R
page 15/23
UM3239
Bill of materials
Item Quantity Reference
25
26
27
28
29
1
1
1
1
U2, U3
Description
Manufacturer
Part number
IC TRANSLATOR
BIDIRECTIONAL
20VQFN
Nexperia
NXS0108BQX
U4
6-axis IMU with
embedded sensor
VFLGA2.5X3X.86 14L P.5
fusion, AI, Qvar for STMicroelectronics
L.475X.25
high-end
applications
LSM6DSV16XTR
U5
LGA 2X2X0.74MAX 12
LEADS
Ultra-low-power 3axis smart
accelerometer with
embedded
STMicroelectronics
machine learning
core and antialiasing filter
LIS2DUXS12TR
HLGA 2X2X.8 10L EXP.
SILIC .91SQ
Low-power and
high-precision
MEMS nano
pressure sensor:
260-1260 hPa
STMicroelectronics
LPS22DFTR
LGA 2x2 12L
Ultra-low-power,
high-performance
3-axis
magnetometer
STMicroelectronics
LIS2MDLTR
STTS22HTR
U6
U7
30
1
U8
Low-voltage,
ultralow-power, 0.5
UDFN-6L_2X2X0P5_STM
STMicroelectronics
°C accuracy
temperature
sensor
31
1
U9
VFLGA2.5X3X.86 14L P.5
L.475X.25
32
UM3239 - Rev 1
2
Part / value
1
U10
3-axis
accelerometer and
STMicroelectronics
3-axis gyroscope
with ISPU
LSM6DSO16ISTR
Digital Relative
Humidity
Temperature
Sensor, ±1.8 /
max 3.5 %RH,
±0.2 °C, UltraLow-Power
SHT40-AD1B-R3
Sensirion
page 16/23
UM3239
Kit versions
6
Kit versions
Table 7. X-NUCLEO-IKS4A1 versions
Finished good
X$NUCLEO-IKS4A1A (1)
Schematic diagrams
X$NUCLEO-IKS4A1A schematic diagrams
Bill of materials
X$NUCLEOIKS4A1A bill of materials
1. This code identifies the X-NUCLEO-IKS4A1 evaluation kit first version. The kit consists of the main board X-NUCLEOIQS4A1 whose version is identified by the code X$NUCLEO-IQS4A1A and the detachable board STEVAL-MKE001A whose
version is identified by the code STEVAL$MKE001AA.
UM3239 - Rev 1
page 17/23
UM3239
Regulatory compliance information
7
Regulatory compliance information
Notice for US Federal Communication Commission (FCC)
For evaluation only; not FCC approved for resale
FCC NOTICE - This kit is designed to allow:
(1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to
determine
whether to incorporate such items in a finished product and
(2) Software developers to write software applications for use with the end product.
This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all
required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product
not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless
the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit
must operate under the authority of an FCC license holder or must secure an experimental authorization under
part 5 of this chapter 3.1.2.
Notice for Innovation, Science and Economic Development Canada (ISED)
For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been
tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules.
À des fins d'évaluation uniquement. Ce kit génère, utilise et peut émettre de l'énergie radiofréquence et n'a pas
été testé pour sa conformité aux limites des appareils informatiques conformément aux règles d'Industrie Canada
(IC).
Notice for the European Union
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the
Directive 2015/863/EU (RoHS).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091)
and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment
Regulations 2012 (UK S.I. 2012 No. 3032).
UM3239 - Rev 1
page 18/23
UM3239
Revision history
Table 8. Document revision history
UM3239 - Rev 1
Date
Version
11-Oct-2023
1
Changes
Initial release.
page 19/23
UM3239
Contents
Contents
1
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1
Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3
Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1
Default solder bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3
Sensor I²C address selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4
Sensor current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5
Sensor disconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6
Adapter board for DIL24 socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7
Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5
Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6
Kit versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7
Regulatory compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
UM3239 - Rev 1
page 20/23
UM3239
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Solder bridges for I²C address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Resistors/jumpers for current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Link between sensors, jumpers and I²C solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Arduino R3 UNO connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ST morpho connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
X-NUCLEO-IKS4A1 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
X-NUCLEO-IKS4A1 versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
UM3239 - Rev 1
page 21/23
UM3239
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
UM3239 - Rev 1
X-NUCLEO-IKS4A1 expansion board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
X-NUCLEO-IKS4A1 plugged on an STM32 Nucleo board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
X-NUCLEO-IKS4A1 standard I²C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
X-NUCLEO-IKS4A1 LSM6DSO16IS I²C sensor hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LSM6DSV16X I²C sensor hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
X-NUCLEO-IKS4A1 DIL24, I²C sensor hub (all sensors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
X-NUCLEO-IKS4A1 circuit schematic (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
X-NUCLEO-IKS4A1 circuit schematic (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
X-NUCLEO-IKS4A1 circuit schematic (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
X-NUCLEO-IKS4A1 circuit schematic (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
page 22/23
UM3239
IMPORTANT NOTICE – READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST
products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgment.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, refer to www.st.com/trademarks. All other product or service names
are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2023 STMicroelectronics – All rights reserved
UM3239 - Rev 1
page 23/23
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