ST STEVAL-C34KAT1 User manual

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
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Features
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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.
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Precautions for use
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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.
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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
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How to use the kit
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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).
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Adhesive tape
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5Schematic diagrams
Figure 7. STEVAL-C34KAT1 circuit schematic: STEVAL-C34AT01
Vibrometer
I2C Addr: 0111000b
Temperature
VDD
VDD
VDD
VDD
34-pin expansion
connector
Orientation: the odd pins should be on the PCB side
VDD
VDD
VDD
VDD
R20R
SB7NC
C4
10uF GND
U2
SDA 6
STTS22HTR
4
Addr
SCL 1
3VDD
GND
52
INT
EXP
7
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
R1
7.5k
R3 0R
C2
100nF
SB1NC
R70R
U1 IIS3DWB
6GND1 5VDDIO
4INT1
SCx
3SDx
2
1SDO/SA0
VDD 8
9
INT2
10
OCS_Aux
11
SDO_Aux
CS 12
SCL 13
7GND2
SDA 14
C3
100nF
SB30R
R4 0R
C1
100nF
SB6
NC
SB5NC
SB40R
R5 0R
C5
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_STT
INT_DWB
INT2_DWB
INT1_DWB
INT1_DWB
INT_STT
INT2_DWB
INT_DWB
UM3021 - Rev 2 page 7/17
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Schematic diagrams

Figure 8. STEVAL-C34KAT1 circuit schematic: STEVAL-FLTCB01
CON34-Socket
Assembly on bottom
J2
1 2
3
CON34-Header
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
J3
12
3
CON34-Socket
4
56
78
910 1112
1314
1516
1718
1920 2122
2324
2526
2728
2930 31
32
3334
J1
12
34
56
78
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
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
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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
8J
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
1D
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
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Bill of materials
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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
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Bill of materials
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7Kit versions
Table 4. STEVAL-C34KAT1 versions
PCB version Schematic diagrams Bill of materials
STEVAL$C34KAT1A (1) STEVAL$C34KAT1A schematic diagrams STEVAL$C34KAT1A bill of materials
1. This code identifies the STEVAL-C34KAT1 evaluation kit first version. The kit consists of the STEVAL$C34AT01A expansion
board and the STEVAL$FLTCB01A flex cable. The STEVAL$C34AT01A code is printed on the expansion board PCB. The
STEVAL$FLTCB01A code is printed on the flex cable.
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Kit versions
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8Regulatory compliance information
Formal Notice Required by the U.S. Federal Communications Commission
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.
Formal Product Notice Required by Industry Canada Innovation, Science and Economic Development
Canada compliance:
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).
Formal product notice required by EU
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the
Directive 2015/863/EU (RoHS).
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Regulatory compliance information
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Revision history
Table 5. Document revision history
Date Revision Changes
15-Dec-2022 1 Initial release.
17-Feb-2023 2
Updated Section 3 How to use the kit.
Added Figure 6. Adhesive tape.
Minor text changes.
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Contents
1Features...........................................................................2
2Precautions for use................................................................3
3How to use the kit .................................................................4
4Adhesive tape .....................................................................6
5Schematic diagrams ...............................................................7
6Bill of materials....................................................................9
7Kit versions ......................................................................11
8Regulatory compliance information ...............................................12
Revision history .......................................................................13
List of tables ..........................................................................15
List of figures..........................................................................16
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Contents
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List of tables
Table 1. STEVAL-C34KAT1 bill of materials........................................................9
Table 2. Expansion board bill of materials .........................................................9
Table 3. Flex cable bill of materials .............................................................10
Table 4. STEVAL-C34KAT1 versions ........................................................... 11
Table 5. Document revision history .............................................................13
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List of tables
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List of figures
Figure 1. STEVAL-C34KAT1 expansion kit........................................................1
Figure 2. Expansion board and flex cable ........................................................4
Figure 3. Plugging the flex cable onto the STWIN.box ................................................4
Figure 4. Final setup .......................................................................4
Figure 5. How remove the flex cable ............................................................5
Figure 6. Adhesive tape ....................................................................6
Figure 7. STEVAL-C34KAT1 circuit schematic: STEVAL-C34AT01 .......................................7
Figure 8. STEVAL-C34KAT1 circuit schematic: STEVAL-FLTCB01 .......................................8
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List of figures
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2023 STMicroelectronics – All rights reserved
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