EVALUATION BOARD MANUAL
HUMIDITY SENSOR WITH INTEGRATED
TEMPERATURE SENSOR
Evaluation board order code Sensor order code
2525020210091 2525020210001
VERSION 1.0
NOVEMBER 6, 2020
Revision history
Manual
version
1.0 1.0
Product
version
Notes
• Initial release of the manual
Date
September 2020
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 1
Abbreviations
Abbreviation Description
I2C Inter integrated circuit
LSB Least significant bit
MEMS Micro electro mechanical system
SPI Serial peripheral interface
SMD Surface mount device
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 2
Contents
1 General description 4
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Functional description 5
2.1 Evaluation board in operation . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.1 Pin header connection . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.2 Through hole connection . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Evaluation board 8
3.1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Important notes 9
4.1 General customer responsibility . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Customer responsibility related to specific, in particular safety-relevant ap-
plications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Best care and attention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.4 Customer support for product specifications . . . . . . . . . . . . . . . . . . 9
4.5 Product improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.6 Product life cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.7 Property rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.8 General terms and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Legal notice 11
5.1 Exclusion of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Suitability in customer applications . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 Usage restriction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 License terms for Würth Elektronik eiSos GmbH & Co. KG sensor product
software and source code 13
6.1 Limited license . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2 Usage and obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3 Ownership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.4 Disclaimer of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.5 Limitation of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.6 Applicable law and jurisdiction . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.7 Severability clause . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.8 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 3
1 General description
R1
1.1 Introduction
The evaluation board of the humidity sensor provides the opportunity to verify the sensor
performance and develop a prototype using an external processor e.g. Amber Pi design
kit (Part No: 2609017281001). The evaluation board can be directly connected to Amber
Pi design kit using the mounted I2C or SPI connectors. The evaluation board can also be
mounted on a bread board using through hole pin header connections. The humidity sensor
(Part No: 2525020210001) is a 16-bit digital ultra-low-power with an integrated temperature
sensor.
Figure 1: Evaluation board of the humidity sensor
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 4
2 Functional description
The humidity sensor evaluation board supports both the standard I2C and SPI communication interfaces.
• A positive supply voltage is applied to the sensor through VDD pin and negative supply
voltage through GND pin.
• The I2C communication interface is enabled by connecting CS pin to VDD. The CS pin
is connected to VDD using 100kΩ resistor R3.
• The SPI communication interface is enabled by removing the resistor R3 between CS
pin to VDD.
I2C communication interface is enabled in the evaluation board by default. The
7-bit slave address of the humidity sensor is 1011111b (0x5F)
Pin
No.
1 VDD VDD Positive supply voltage Supply
2 SCL SCL I2C serial clock Input
3 INT INT Data ready output signal Output
4 SDA SDA I2C serial data Input/Output
5 GND GND Negative supply voltage Supply
6 CS CS I2C enable/disable Input
Evaluation
board pins
SPI communication is enabled by removing the resistor R3
Sensor
pins
Description Input/Output
Table 1: Pin description
Refer to the data sheet of the humidity sensor (Part No: 252502021001) for
information of the electrical properties.
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 5
I²C Interface to external boards
e.g. Amber Pi design kit
SPI Interface to external boards
e.g. Amber Pi design kit
R3
Figure 2: Pin header connection to the external boards. e.g. Amber Pi design kit
6
4
2
1
3
5
2.1 Evaluation board in operation
2.1.1 Pin header connection
Pin No I2C Pins SPI Pins
1 GND GND
2 SCL SCL
3 SDA MOSI
4 GND CS
5 NC MISO
6 VDD VDD
Table 2: Pin header to external boards
Resistor Description
R1 SDA to MOSI connection series resistor
R2 SDA to MISO connection series resistor
R3 I2C enabled by default. CS is connected to VDD
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 6
Table 3: Functionality of resistors on the evaluation board
2.1.2 Through hole connection
Through hole pin header connections
Figure 3: Through hole connection
Pleaser refer to Table 1 for the pin description of the evaluation board.
Check if necessary for your configuration if the R1, R2 and R3 resistors have
to be removed before connecting the evaluation board to a processor.
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 7
3 Evaluation board
3.1 Schematic diagram
Figure 4: Schematic diagram
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 8
4 Important notes
The following conditions apply to all goods within the sensors product range of Würth Elektronik eiSos GmbH & Co. KG:
4.1 General customer responsibility
Some goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain
statements regarding general suitability for certain application areas. These statements
about suitability are based on our knowledge and experience of typical requirements concerning the areas, serve as general guidance and cannot be estimated as binding statements
about the suitability for a customer application. The responsibility for the applicability and use
in a particular customer design is always solely within the authority of the customer. Due to
this fact, it is up to the customer to evaluate, where appropriate to investigate and to decide
whether the device with the specific product characteristics described in the product specification is valid and suitable for the respective customer application or not. Accordingly, the
customer is cautioned to verify that the documentation is current before placing orders.
4.2 Customer responsibility related to specific, in particular
safety-relevant applications
It has to be clearly pointed out that the possibility of a malfunction of electronic components
or failure before the end of the usual lifetime cannot be completely eliminated in the current
state of the art, even if the products are operated within the range of the specifications.
The same statement is valid for all software and software parts contained in or used with
or for products in the sensor product range of Würth Elektronik eiSos GmbH & Co. KG.
In certain customer applications requiring a high level of safety and especially in customer
applications in which the malfunction or failure of an electronic component could endanger
human life or health, it must be ensured by most advanced technological aid of suitable
design of the customer application that no injury or damage is caused to third parties in the
event of malfunction or failure of an electronic component.
4.3 Best care and attention
Any product-specific data sheets, manuals, application notes, PCN’s, warnings and cautions must be strictly observed in the most recent versions and matching to the products
revisions. This documents can be downloaded from the product specific sections on the
wireless connectivity and sensors homepage.
4.4 Customer support for product specifications
Some products within the product range may contain substances, which are subject to restrictions in certain jurisdictions in order to serve specific technical requirements. Necessary
information is available on request. In this case, the field sales engineer or the internal sales
person in charge should be contacted who will be happy to support in this matter.
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 9
4.5 Product improvements
Due to constant product improvement, product specifications may change from time to time.
As a standard reporting procedure of the Product Change Notification (PCN) according to
the JEDEC-Standard, we inform about major changes. In case of further queries regarding
the PCN, the field sales engineer, the internal sales person or the technical support team
in charge should be contacted. The basic responsibility of the customer as per section
and
4.2
remains unaffected.
The sensor driver software ¨Sensor SDK¨ and it’s source codes are not subject to the Product Change Notification information process.
4.1
4.6 Product life cycle
Due to technical progress and economical evaluation we also reserve the right to discontinue production and delivery of products. As a standard reporting procedure of the Product
Termination Notification (PTN) according to the JEDEC-Standard we will inform at an early
stage about inevitable product discontinuance. According to this, we cannot ensure that all
products within our product range will always be available. Therefore, it needs to be verified
with the field sales engineer or the internal sales person in charge about the current product
availability expectancy before or when the product for application design-in disposal is considered. The approach named above does not apply in the case of individual agreements
deviating from the foregoing for customer-specific products.
4.7 Property rights
All the rights for contractual products produced by Würth Elektronik eiSos GmbH & Co. KG
on the basis of ideas, development contracts as well as models or templates that are subject
to copyright, patent or commercial protection supplied to the customer will remain with Würth
Elektronik eiSos GmbH & Co. KG. Würth Elektronik eiSos GmbH & Co. KG does not warrant
or represent that any license, either expressed or implied, is granted under any patent right,
copyright, mask work right, or other intellectual property right relating to any combination,
application, or process in which Würth Elektronik eiSos GmbH & Co. KG components or
services are used.
4.8 General terms and conditions
Unless otherwise agreed in individual contracts, all orders are subject to the current version of the "General Terms and Conditions of Würth Elektronik eiSos Group", last version
available at www.we-online.com.
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 10
5 Legal notice
5.1 Exclusion of liability
Würth Elektronik eiSos GmbH & Co. KG considers the information in this document to be
correct at the time of publication. However, Würth Elektronik eiSos GmbH & Co. KG reserves the right to modify the information such as technical specifications or functions of
its products or discontinue the production of these products or the support of one of these
products without any written announcement or notification to customers. The customer must
make sure that the information used corresponds to the latest published information. Würth
Elektronik eiSos GmbH & Co. KG does not assume any liability for the use of its products.
Würth Elektronik eiSos GmbH & Co. KG does not grant licenses for its patent rights or for
any other of its intellectual property rights or third-party rights.
Notwithstanding anything above, Würth Elektronik eiSos GmbH & Co. KG makes no representations and/or warranties of any kind for the provided information related to their accuracy,
correctness, completeness, usage of the products and/or usability for customer applications.
Information published by Würth Elektronik eiSos GmbH & Co. KG regarding third-party products or services does not constitute a license to use such products or services or a warranty
or endorsement thereof.
5.2 Suitability in customer applications
The customer bears the responsibility for compliance of systems or units, in which Würth
Elektronik eiSos GmbH & Co. KG products are integrated, with applicable legal regulations.
Customer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements concerning its products, and any use of
Würth Elektronik eiSos GmbH & Co. KG components in its applications, notwithstanding
any applications-related in-formation or support that may be provided by Würth Elektronik eiSos GmbH & Co. KG. Customer represents and agrees that it has all the necessary
expertise to create and implement safeguards which anticipate dangerous consequences of
failures, monitor failures and their consequences lessen the likelihood of failures that might
cause harm and take appropriate remedial actions. The customer will fully indemnify Würth
Elektronik eiSos GmbH & Co. KG and its representatives against any damages arising out
of the use of any Würth Elektronik eiSos GmbH & Co. KG components in safety-critical
applications.
5.3 Usage restriction
Würth Elektronik eiSos GmbH & Co. KG products have been designed and developed for
usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where
a failure of the product is reasonably expected to cause severe personal injury or death,
unless the parties have executed an agreement specifically governing such use. Moreover,
Würth Elektronik eiSos GmbH & Co. KG products are neither designed nor intended for use
in areas such as military, aerospace, aviation, nuclear control, submarine, transportation
(automotive control, train control, ship control), transportation signal, disaster prevention,
medical, public information network etc. Würth Elektronik eiSos GmbH & Co. KG must be
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 11
informed about the intent of such usage before the design-in stage. In addition, sufficient
reliability evaluation checks for safety must be performed on every electronic component,
which is used in electrical circuits that require high safety and reliability function or performance. By using Würth Elektronik eiSos GmbH & Co. KG products, the customer agrees to
these terms and conditions.
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 12
6 License terms for Würth Elektronik eiSos
GmbH & Co. KG sensor product software and source
code
This License terms will take effect upon the purchase and usage of the Würth Elektronik
eiSos GmbH & Co. KG sensor products. You hereby agree that this license terms are applicable to the product and the incorporated software, firmware and source codes (collectively,
"Software") made available by Würth Elektronik eiSos in any form, including but not limited
to binary, executable or source code form.
The software included in any Würth Elektronik eiSos sensor product is purchased to you on
the condition that you accept the terms and conditions of this license terms. You agree to
comply with all provisions under this license terms.
6.1 Limited license
Würth Elektronik eiSos hereby grants you a limited, non-exclusive, non-transferable and
royalty-free license to use the software and under the conditions that will be set forth in this
license terms. You are free to use the provided software only in connection with one of the
products from Würth Elektronik eiSos to the extent described in this license terms.
You are entitled to change or alter the source code for the sole purpose of creating an application embedding the Würth Elektronik eiSos sensor product. The transfer of the source
code to third parties is allowed to the sole extent that the source code is used by such third
parties in connection with our product or another hardware provided by Würth Elektronik
eiSos under strict adherence of this license terms. Würth Elektronik eiSos will not assume
any liability for the usage of the incorporated software and the source code.
You are not entitled to transfer the source code in any form to third parties without prior written consent of Würth Elektronik eiSos.
You are not allowed to reproduce, translate, reverse engineer, decompile, disassemble or
create derivative works of the incorporated software and the source code in whole or in part.
No more extensive rights to use and exploit the products are granted to you.
6.2 Usage and obligations
The responsibility for the applicability and use of the Würth Elektronik eiSos sensor product
with the incorporated software in a particular customer design is always solely within the
authority of the customer. Due to this fact, it is up to you to evaluate and investigate, where
appropriate, and to decide whether the device with the specific product characteristics described in the product specification is valid and suitable for your respective application or
not.
You are responsible for using the Würth Elektronik eiSos sensor product with the incorporated software in compliance with all applicable product liability and product safety laws. You
acknowledge to minimize the risk of loss and harm to individuals and bear the risk for failure
leading to personal injury or death due to your usage of the product.
Würth Elektronik eiSos’ products are not authorized for use in safety-critical applications,
or where a failure of the product is reasonably expected to cause severe personal injury
or death. Moreover, Würth Elektronik eiSos’ products are neither designed nor intended for
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 13
use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation
(automotive control, train control, ship control), transportation signal, disaster prevention,
medical, public information network etc. You shall inform Würth Elektronik eiSos about the
intent of such usage before design-in stage. In certain customer applications requiring a very
high level of safety and in which the malfunction or failure of an electronic component could
endanger human life or health, you must ensure to have all necessary expertise in the safety
and regulatory ramifications of your applications. You acknowledge and agree that you are
solely responsible for all legal, regulatory and safety-related requirements concerning your
products and any use of Würth Elektronik eiSos’ products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by
Würth Elektronik eiSos. YOU SHALL INDEMNIFY WÜRTH ELEKTRONIK EISOS AGAINST
ANY DAMAGES ARISING OUT OF THE USE OF WÜRTH ELEKTRONIK EISOS’ PRODUCTS IN SUCH SAFETY-CRITICAL APPLICATIONS.
6.3 Ownership
The incorporated Software created by Würth Elektronik eiSos is and will remain the exclusive
property of Würth Elektronik eiSos.
6.4 Disclaimer of warranty
THE SOFTWARE AND IT’S SOURCE CODE IS PROVIDED "AS IS". YOU ACKNOWLEDGE THAT WÜRTH ELEKTRONIK EISOS MAKES NO REPRESENTATIONS AND WARRANTIES OF ANY KIND RELATED TO, BUT NOT LIMITED TO THE NON-INFRINGEMENT
OF THIRD PARTIES’ INTELLECTUAL PROPERTY RIGHTS OR THE MERCHANTABILITY OR FITNESS FOR YOUR INTENDED PURPOSE OR USAGE. WÜRTH ELEKTRONIK
EISOS DOES NOT WARRANT OR REPRESENT THAT ANY LICENSE, EITHER EXPRESS
OR IMPLIED, IS GRANTED UNDER ANY PATENT RIGHT, COPYRIGHT, MASK WORK
RIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT RELATING TO ANY COMBINATION, MACHINE, OR PROCESS IN WHICH THE WÜRTH ELEKTRONIK EISOS’ PRODUCT WITH THE INCORPORATED SOFTWARE IS USED. INFORMATION PUBLISHED BY
WÜRTH ELEKTRONIK EISOS REGARDING THIRD-PARTY PRODUCTS OR SERVICES
DOES NOT CONSTITUTE A LICENSE FROM WÜRTH ELEKTRONIK EISOS TO USE
SUCH PRODUCTS OR SERVICES OR A WARRANTY OR ENDORSEMENT THEREOF.
6.5 Limitation of liability
Any liability not expressly provided by Würth Elektronik eiSos shall be disclaimed.
You agree to hold us harmless from any third-party claims related to your usage of the Würth
Elektronik eiSos’ products with the incorporated software and source code. Würth Elektronik
eiSos disclaims any liability for any alteration, development created by you or your customers
as well as for any combination with other products.
6.6 Applicable law and jurisdiction
Applicable law to this license terms shall be the laws of the Federal Republic of Germany.
Any dispute, claim or controversy arising out of or relating to this license terms shall be
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 14
resolved and finally settled by the court competent for the location of Würth Elektronik eiSos
registered office.
6.7 Severability clause
If a provision of this license terms are or becomes invalid, unenforceable or null and void,
this shall not affect the remaining provisions of the terms. The parties shall replace any such
provisions with new valid provisions that most closely approximate the purpose of the terms.
6.8 Miscellaneous
Würth Elektronik eiSos reserves the right at any time to change this terms at its own discretion. It is your responsibility to check at Würth Elektronik eiSos homepage for any updates.
Your continued usage of the products will be deemed as the acceptance of the change.
We recommend you to be updated about the status of new software, which is available on
our website or in our data sheet, and to implement new software in your device where appropriate.
By ordering a sensor product, you accept this license terms in all terms.
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 15
List of Figures
1 Evaluation board of the humidity sensor . . . . . . . . . . . . . . . . . . . . . 4
2 Pin header connection to the external boards. e.g. Amber Pi design kit . . . . 6
3 Through hole connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
List of Tables
1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pin header to external boards . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Functionality of resistors on the evaluation board . . . . . . . . . . . . . . . . 6
Humidity sensor Evaluation Board, Part Nr. 2525020210091
User manual version 1.0 © November2020
www.we-online.com/sensors 16
Monitoring
& Control
Automated Meter
Reading
Internet
of Things
more than you expect
Contact:
Würth Elektronik eiSos GmbH & Co. KG
Division Wireless Connectivity & Sensors
Max-Eyth-Straße 1
74638 Waldenburg
Germany
Tel.: +49 651 99355-0
Fax.: +49 651 99355-69
www.we-online.com/wireless-connectivity
Loading...