ST STEVAL-C34KAT1 Manuel utilisateur

Introduction

The STEVAL-C34KAT1 is a multisensing expansion kit that includes the STEVAL-C34AT01 expansion board and a flex cable.

The small form factor and the accurate design allow a precise measurement of vibrations up to the sensor bandwidth (6 kHz) as

well as of the temperature.

The IIS3DWB vibration sensor is soldered at the center of the small 25 x 25 mm board. The STTS22H temperature sensor is

placed on the PCB side and is thermally coupled to the PCB bottom exposed pad through vias.

The expansion board can be mounted on the equipment for the vibration analysis using the four holes or the double-sided

adhesive tape. This board is compatible with the STWIN.box kit (STEVAL-STWINBX1).

Figure 1. STEVAL-C34KAT1 expansion kit

Getting started with the STEVAL-C34KAT1 vibrometer and temperature sensor

expansion kit

UM3021

User manual

UM3021 - Rev 2 - February 2023

For further information contact your local STMicroelectronics sales office. www.st.com

1Features

• Kit content:

– a STEVAL-C34AT01 multisensing expansion board (25x25mm) with a 34-pin board-to-FPC

connector

– a 34-pin flex cable

• Ideal plug-in for the STEVAL-STWINBX1 evaluation board

• Ultra-wide bandwidth (up to 6 kHz), low-noise, 3-axis digital vibration sensor (IIS3DWB):

– Ultra-wide and flat frequency response range: from DC to 6 kHz (±3 dB point)

– Low-pass or high-pass filter with a selectable cut-off frequency

– 1.1 mA with the three axes at full performance

– Extended temperature range from -40 to +105°C

• Low-voltage, ultra-low-power, 0.5°C accuracy I²C/SMBus 3.0 temperature sensor (STTS22H)

– Programmable thresholds through an interrupt pin

– Ultra-low current: 1.75 µA in one-shot mode

– Operating temperature -40 to +125°C

• Exposed pad on the bottom side to improve the thermal coupling for the temperature sensor

• 2.1 to 3.3 V power supply input

UM3021

Features

UM3021 - Rev 2 page 2/17

2Precautions for use

Important: This kit is not immune to indirect electrostatic discharges. During the ESD test, the kit has obtained level C. This

means that the expansion board has not been damaged during the test, but the intervention of the operator was

necessary to reset it. When an electrostatic discharge is applied to an adjacent object, the board might interrupt

its functioning. In this case, the intervention of an operator is required to reset the board (that is, to unplug and

replug the power supply line).

If the board is attached to a STEVAL-STWINBX1 (STWIN.box), you can control the power supply of the external

34-pin connector via software, by leveraging the power switch functionality of the STBC02 battery charger IC.

UM3021

Precautions for use

UM3021 - Rev 2 page 3/17

3How to use the kit

The STEVAL-C34KAT1 expansion board can be used with the STEVAL-STWINBX1 kit (STWIN.box).

The device can be attached to the STWIN.box using the provided flex cable, through the 34-pin connectors

available on both platforms.

Figure 2. Expansion board and flex cable

To plug the flex cable onto the STWIN.box, remove the plastic case cover.

Figure 3. Plugging the flex cable onto the STWIN.box

You can then remount the cover, as it leaves enough space for the flex cable.

Figure 4. Final setup

The easiest way to read data from the STEVAL-C34KAT1 sensors is to flash the STWIN.box with the FP-SNS-

DATALOG2 function pack. The firmware package provides a ready to use, precompiled binary to perform sensor

data acquisition.

UM3021

How to use the kit

UM3021 - Rev 2 page 4/17

Note: Please be careful when you remove the flex cable as you may damage it. The safest way to remove it is by

pulling it next to the connectors using tweezers.

Figure 5. How remove the flex cable

UM3021

How to use the kit

UM3021 - Rev 2 page 5/17

4Adhesive tape

The kit provides a few samples of 3M™ 9088 high performance, double coated tape. These samples can be used

to mount the board on the equipment for vibration analysis.

Alternatively, you can mount the board through the holes located at each corner of the PCB.

Figure 6. Adhesive tape

The small form factor of the PCB ensures no resonances and a flat frequency response for the complete

bandwidth of the sensor (up to 6 kHz).

UM3021

Adhesive tape

UM3021 - Rev 2 page 6/17

5Schematic diagrams

Figure 7. STEVAL-C34KAT1 circuit schematic: STEVAL-C34AT01

Vibrometer

I2C Addr: 0111000b

Temperature

VDD

34-pin expansion

connector

Orientation: the odd pins should be on the PCB side

VDD

R20R

SB7NC

10uF GND

SDA 6

STTS22HTR

Addr

SCL 1

3VDD

GND

INT

EXP

CN1

1 2

CON34-Plug

3 4

5 6

7 8

9 10

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

SB80R

R60R

SB2NC

7.5k

R3 0R

100nF

SB1NC

R70R

U1 IIS3DWB

6GND1

5VDDIO

4INT1

SCx

3SDx

1SDO/SA0

VDD 8

INT2

OCS_Aux

SDO_Aux

CS 12

SCL 13

7GND2

SDA 14

100nF

SB30R

R4 0R

100nF

SB6

SB5NC

SB40R

R5 0R

330pF

SPI_CS

SPI_CLK

SPI_MOSI

SPI_MISO

I2C_SCL

I2C_SDA

INT_STT

I2C_SCL

SPI_MISO

SPI_MOSI

SPI_CS

INT_DWB

SPI_CLK

INT_STT

I2C_SDA

INT_STT

INT_DWB

INT2_DWB

INT1_DWB

INT_STT

INT2_DWB

INT_DWB

UM3021 - Rev 2 page 7/17

UM3021

Schematic diagrams

Figure 8. STEVAL-C34KAT1 circuit schematic: STEVAL-FLTCB01

CON34-Socket

Assembly on bottom

1 2

CON34-Header

5 6

7 8

9 10

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

CON34-Socket

910 1112

1314

1516

1718

1920 2122

2324

2526

2728

2930 31

3334

910 1112

1314

1516

1718

1920 2122

2324

2526

2728

2930 3132

3334

34 33

32 31

30 29

28 27

26 25

24 23

22 21

20 19

18 17

16 15

14 13

12 11

10 9

8 7

6 5

4 3

2 11

UM3021 - Rev 2 page 8/17

UM3021

Schematic diagrams

6Bill of materials

Table 1. STEVAL-C34KAT1 bill of materials

Item Q.ty Ref. Part/value Description Manufacturer Order code

1 1

Table 2. Expansi

on board bill of

materials

STEVAL-

C34AT01

Vibrometer and

temperature

expansion board

ST Not available for

separate sale

2 1

Table 3. Flex

cable bill of

materials

STEVAL-

FLTCB01

34-pin, 15 cm

flex cable ST Not available for

separate sale

34- 3M 9088 - 25x25

mm, 25x25 mm

3M™ high-

performance,

double coated

tape

3M 9088

Table 2. Expansion board bill of materials

Item Q.ty Ref. Value Description Manufacturer Order code

1 1 CN1

CON34-Plug, 34

positions, SMD,

gold

Connector

socket

Panasonic

Electric Works AXF6G3412A

2 3 C1, C2, C3

100 nF, 0402

(1005 metric), 16

V, ±10%, X7R

Ceramic

capacitors

Murata

Electronics North

America

GRM155R71C104KA8

3 1 C4

10 µF, 0402

(1005 metric), 10

V, ±20%,X5R

Ceramic

capacitor

Samsung

Electro-

Mechanics

America, Inc.

CL05A106MP8NUB8

4 1 C5

330pF, 0402

(1005 Metric),

10%,

CAP CER 330pF

Murata

Electronics North

America

GRM1555C1H331GA0

5 1 R1

7.5 k, 0402

(1005 metric),

1/16 W, ±5%,

SMD

Resistor Yageo RC0402JR-077K5L

6 9

R2, SB3, R3,

SB4, R4, R5, R6,

R7, SB8

0 R, 0402 (1005

metric), SMD Resistors Vishay Dale CRCW04020000Z0ED

70SB1, SB2, SB5,

SB6, SB7

0 ohm, 0402

(1005 metric),

SMD

Resistors (not

mounted) Vishay Dale CRCW04020000Z0ED

8 1 U1

IIS3DWBTR,

VFLGA2.5X3X.8

6 14L P.5

L.475X.25

Ultra-wide

bandwidth, low-

noise, 3-axis

digital vibration

sensor

ST IIS3DWBTR

9 1 U2

STTS22HTR,

UDFN 2X2X.55

6L pitch 0.65

Low-voltage,

ultra-low-power,

0.5°C accuracy

I²C/SMBus 3.0

temperature

sensor

ST STTS22HTR

UM3021

Bill of materials

UM3021 - Rev 2 page 9/17

Table 3. Flex cable bill of materials

Item Q.ty Ref. Part/value Description Manufacturer Order code

1 1 J2

CON34-Header,

34 positions,

SMD, gold

Connector

header

Panasonic

Electric Works AXF5G3412A

2 2 J1, J3

CON34-Socket,

34 positions,

SMD, gold

Connector

sockets

Panasonic

Electric Works AXF6G3412A

UM3021

Bill of materials

UM3021 - Rev 2 page 10/17

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