ZS05

ZS05 WINSEN | Alldatasheet

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Technical content

TemperatureandHumidityModule （Model No.ZS05） Manual Version：1.1 Validfrom：2019-01-10 ZhengzhouWinsenElectronicsTechnologyCo.,Ltd

This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, storedindatabaseorretrievalsystem,alsocan’tspreadthroughelectronic,copying,record ways. Thanks for purchasing our product. In order to let customers use it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, changethecomponentsinsideofthesensor,weshallnotberesponsiblefortheloss. Thespecificsuchascolor,appearance,sizes&etc,pleaseinkindprevail. We are devoting ourselves to products development and technical innovation, so we reserve the right to improve the products without notice. Please confirm it is the valid version before using this manual.At the same time, users’comments on optimized using way arewelcome. Please keep the manual properly, in order to get help if you have questions during the usageinthefuture. Zhengzhou Winsen Electronics Technology CO., LTD

www.winsen-sensor.com TEL:0086-371-6716967 /67169097 Email: sales@winsensor.com ZS05 Temperature and Humidity Module

Features

Lowpower consumption,Smallsizes High sensitivity Standard single bus interface Standard IICdigitalinterface Application Storage,industrial production,process controlling,environmentmonitoring,householdappliances, meteorological field Parameters Stable1. PartNo. ZS05 Detection Object Relativehumidity,temperature OperationVoltage 2.7～5.5VDC Detection Range 20～90%RH Accuracyforhumiditydetection ±5%RH (at25℃，60%RH，Vin=2.7V) Accuracyfortemperaturedetection ±1℃ Operation temperature -20℃～60℃ Temperature and humidity performance Humidity performance Paramete Conditio MIN TYP MAX UNIT Resolution 0.1 %RH Measuring 20 90 %RH Accuracy ±5 %RH ZS05 temperature and humidity module is a digital signal output temperature and humidity sensor module, which is an upgraded product of ZS03. It uses dedicated digital module acquisition technology to ensure high reliability and stability. The ZS05 has a single bus and standard IIC communication modes, and the single bus communication method is fully compatible with the ZS03. Users can choose any communication method, which is convenient to use and the package format is consistent with ZS03.

www.winsen-sensor.com TEL:0086-371-6716967 /67169097 Email: sales@winsensor.com Structure Front Back Side Fig1： Structure Pins definition 1．VCC Power supply 2.7～5.5VDC 2．SDA Data foot 3．GND Power ground 4．SLC Clockpin(short-circuit clockpin topowerground insingle bus mode) Detection 5 S Voltage 2.7 5.5 V Working current 2.8 6.6 mA Quiescent Current 15 20 uA Interchange ability Completely interchangeable Storage conditions ＜90%RH

www.winsen-sensor.com TEL:0086-371-6716967 /67169097 Email: sales@winsensor.com VCC SDA GND SCL Pin definitionmap Typical circuit IIC typical application circuit Single bus typical application circuit Electrical performance Parameter Condition Min Typ Max UNIT Power supply 2.7 5 5.5 V Low level output voltage 0 300 mV High level output voltage 90% 100% VDD Low level input voltage 0% 30% VDD High level input voltage 70% 100% VDD Output current open 8 mA Tristate (off) 10 20 uA The sampling period 2 S Data interface Power Supply Pin: (VCC GND) The ZS05 has a supply voltage range of 2.7V - 5.5V. Serial Clock Input: (SCL) The SCL pin is used to select the sensor communication method and the clock line for IIC communication. When SCL is kept low after power-on, it means that the user selects single-bus

www.winsen-sensor.com TEL:0086-371-6716967 /67169097 Email: sales@winsensor.com communication, otherwise it is IIC communication; after selecting communication mode, the sensor communication mode remains unchanged during power-on; if you want to change the communication mode, please re-apply Electricity, and select the communication method according to the operation requirements. Serial Data (SDA): The SDA pin is a three-state structure for reading and writing sensor data. IIC communication protocol The ZS05 supports the IIC mode for communication. It is compiled according to the IIC standard protocol and can be directly hung on the IIC bus. The sensor SDA pin is connected to the IIC data bus, and the SCL is connected to the IIC clock bus. When using it, the two pins must be connected to a 1KΩ. ~10KΩ pull-up resistor, I2C address is 0xB8 (DEV SEL); IIC communication rate can't be higher than 400KHZ. BYTE ADDR R/W Desc Note 0x00 R Humidity integer Relative humidity value 0x01 R Humidity decimal place 0x02 R Temperature integer Relative temperature value0x03 R Temperature decimal place 0x04 R Checksum IIC interface characteristics: The following communication specifications must be strictly observed, otherwise the sensor will not work properly. IICcommunication protocol

www.winsen-sensor.com TEL:0086-371-6716967 /67169097 Email: sales@winsensor.com IIC read timing diagram Reference timing diagram Data Processing Reference Single Bus Data Processing Example. Single bus communication protocol When the ZS05 uses single bus communication. The data exchange and control in the system are all completed by single bus communication. The host is connected to the data line through an open-drain or tri-state port to allow the device to release the bus when it is not transmitting data, and to allow other devices to use the bus; a single bus typically requires an external pull-up resistor of approximately 4.7KΩ. The default state is high when the bus is idle. Because they are master-slave, the sensor responds only when the host calls the sensor. Therefore, the single bus timing must be strictly followed during host access. If there is timing disorder, the temperature and humidity data will not be read correctly. Single bus transfer data definition: The SDA pin is used for communication and synchronization between the client host and the ZS05. It uses a single bus data format to transfer 40 bits of data at a time. First out. The specific communication timing is shown in the figure below, and the communication format description is shown in the table below. A B C D E F G Single bus communication protocol A:Start signal B:Corresponding signal C: Humidity integer D:Humidity decimal place E:Temperature integer F:Temperature decimal place G:Check Digit

www.winsen-sensor.com TEL:0086-371-6716967 /67169097 Email: sales@winsensor.com Single bus data processing example: Name Single bus format definition Start signal The host pulls the data bus (SDA) low for a period of time (18ms), notifying the sensor to prepare the data Response signal The sensor pulls the data bus (SDA) down for 80μs and then pulls it up 80μs to start the corresponding host signal. Data Format After receiving the host start signal, the sensor serializes 40 bits of data from the data bus (SDA) at a time, high first out Humidity Humidity high is humidity integer data, humidity status is humidity decimal data Temperature The high temperature is the humidity integer data, the temperature status is the humidity decimal data, and the low temperature bit 8 is the negative temperature, otherwise it is the positive temperature. Check Digit Check digit = humidity high + humidity low + temperature high + low temperature Data example: Example 1: The received 40-bit data is: 00110111 00000000 00010010 00000000 01001001 High humidity 8 bits Low humidity 8 bits High temperature 8 bits Low temperature 8 bits Check digit Calculation: 00110111 + 00000000 + 00010010 + 00000000 = 01001001 Receive the data correctly: Humidity: 00110111 = 37H = 55% RH Temperature: 00010010 = 12H = 18°C Example 2: The received 40-bit data is: 00101001 00000000 00000110 00000000 01000100 High humidity 8 bits Low humidity 8 bits High temperature 8 bits Low temperature 8 bits Check digit Calculation: 00101001 + 00000000 + 00000110 + 00000000 = 00101111 00101111 not equal to 01000100 The data received this time is incorrect, give up, and receive data again. Caution

• The temperature will affect the relative humidity of the gas. When measuring the humidity, the humidity sensor should be operated at the same temperature as much as possible.
• If you share a printed circuit board with the heat-releasing electronic components, keep the sensor away from the electronic components as much as possible and install it under the heat source while keeping the casing well ventilated.
• Do not use the module for a long time in an environment with high dust density.
• Do not touch the internal humidity sensor.
• It is strictly forbidden to place the product in a corrosive atmosphere for a long time.
• Recommended storage conditions: temperature 10 ° C ~ 40 ° C, humidity 60% RH or less.
• Avoid condensation.