DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 27
Technical content
Datasheet sections
- 1.1 Pin Assignments
- 1.2 Pin Descriptions
- 2.1 Absolute Maximum Ratings
- 2.2 Recommended Operating Conditions
- 3.1 Humidity Sensor Specification
- 3.2 Temperature Sensor Specification
- 3.3 Humidity Sensor Accuracy Graphs
- 3.4 Temperature Sensor Accuracy Graphs
- 4.1 I2C Features and Timing
- 4.2 Sensor Slave Address
- 4.3 I2C Communication
- 4.4 Measurements and Commands
- 4.5 Periodic Measurement Mode
- 4.6 Alert Feature
- 4.7 Accessing Configurable HS401x Registers
- 4.8 Configuration Bits
- 4.9 Reading the Sensor ID Number
Features
■ Humidity range: 0% to 100%RH ■ Automotive grade, AEC-Q100 qualified, Grade 2, -40°C to +105°C ■ Industrial grade, JEDEC qualified, -40°C to +125°C ■ Hydrophobic membrane, IP67 rating ■ Digital I2C output with CRC checksum ■ RH accuracy: ±1.5%RH, typical (HS4011) ■ 14-bit resolution: 0.04%RH, typical ■ Independent programmable resolution settings: 8, 10, 12, 14 bits ■ Fast RH response time: 4 seconds time constant, typical ■ Temperature sensor accuracy: ±0.2°C, typical (HS4011, HS4012, -10 to +80°C) ■ Very low current consumption: 0.3µA average (8- bit resolution, 3.3V supply), 0.62µA average (14-bit resolution, 3.3V supply), one RH and temperature measurement per second ■ Excellent stability against aging and volatile compounds ■ Highly robust protection from harsh environmental conditions and mechanical shock
Applications
■ Climate control systems ■ Instrumentation ■ Home appliances ■ Weather stations ■ Building automation ■ HVAC systems ■ Medical equipment ■ Data logging systems Product Image
R36DS0023EU0103 Rev.1.03 Jun 6, 2022 Page 4 1. Pin Information
1.1 Pin Assignments
1.2 Pin Descriptions
Pin Number Pin Name Type Description 1 SDA In/Out Serial data. 2 NC [1] - Do not connect. 3 ALERT Out Digital output indicating an alarm condition. Leave floating if unused. 4 SCL In/Out Serial clock. 5 VDD In Supply voltage. 6 NC [1] - Do not connect. 7 NC [1] - Do not connect. 8 VSS In Ground. 1. “NC” stands for not connected / no connection required / not bonded.
R36DS0023EU0103 Rev.1.03 Jun 6, 2022 Page 5 2. Specifications
2.1 Absolute Maximum Ratings
CAUTION: The absolute maximum ratings are stress ratings only. Stresses greater than those listed below can cause permanent damage to the device. Functional operation of the HS401x at absolute maximum ratings is not implied. Exposure to absolute maximum rating conditions might affect device reliability. Parameter Conditions Minimum Maximum Unit Storage Temperature Range Recommended 0 to 60°C -40 125 °C
2.2 Recommended Operating Conditions
Important note: The HS401x series sensors are optimized to perform best in the more common temperature and humidity ranges of 10°C to 50°C and 20% RH to 80% RH, respectively. If operated outside of these conditions for extended periods, especially at high humidity levels, the sensors may exhibit an offset. In most cases, this offset is temporary and will gradually disappear once the sensor is returned to normal temperature and humidity conditions. The amount of the shift and the duration of the offset vary depending on the duration of exposure and the severity of the relative humidity and temperature conditions.[1] The time needed for the offset to disappear can also be decreased by using the procedures described in sections 8 and 9. Parameter Condition Minimum Typical Maximum Unit Operating Supply Voltage - 1.71 3.3 3.6 V Sleep Current Sleep Mode 25°C - 0.010 0.025 µA -40 to 125°C - - 2.5 Average Current One RH + temperature measurement/second VDD = 3.3V 8-bit resolution 0.27 0.30 0.32 µA 10-bit resolution 0.31 0.34 0.37 12-bit resolution 0.39 0.43 0.47 14-bit resolution 0.55 0.62 0.69 Measurement Time Humidity and temperature including the digital compensation 8-bit resolution - 0.64 - ms 10-bit resolution - 0.80 - 12-bit resolution - 1.04 - 14-bit resolution - 1.70 - Operating Temperature Range - - -40 - 125 °C 1. At TA = +25°C, VDD = +1.71V to +3.6V unless otherwise noted.
- Humidity and Temperature Sensor Performance
3.1 Humidity Sensor Specification
Table 1. Humidity Sensor Specification, TA = +25°C, VDD = 1.71V to 3.6V
- Monotonic increases from 10 to 90% RH after sensor has been stabilized at 50% RH.
- Refer to section 3.3 for additional details.
- Initial value to 63% of total variation. Response time depend on system airflow.
3.2 Temperature Sensor Specification
Table 2. Temperature Sensor Specification, TA = +25°C, VDD = 1.71V to 3.6V Response Time Constant [2] (τT) - - >2.0 - Sec.
- Refer to section 3.4 for additional details.
- Initial value to 63% of total variation. Response time depends on system thermal mass and air flow.
- Temperature accuracy can be optimized for specified supply voltages upon request.
3.3 Humidity Sensor Accuracy Graphs
The typical and maximum relative humidity sensor accuracy tolerances are shown in the following figures. Figure 1. HS4011 RH Accuracy Tolerance at 25°C Figure 2. HS4011 RH Accuracy over Temperature Figure 3. HS4012 RH Accuracy Tolerance at 25°C Figure 4. HS4012 RH Accuracy over Temperature Figure 5. HS4013 RH Accuracy Tolerance at 25°C Figure 6. HS4013 RH Accuracy over Temperature
Figure 7. HS4014 RH Accuracy Tolerance at 25°C Figure 8. HS4014 RH Accuracy over Temperature
3.4 Temperature Sensor Accuracy Graphs
Figure 9. HS4011/HS4012 Temperature Sensor Figure 10. HS4013 Temperature Sensor Accuracy Figure 11. HS4014 Temperature Sensor Accuracy master device can be present on the line.
4.1 I2C Features and Timing
Figure 12. Timing Diagram Table 3. I2C Timing Parameters
- Combined LOW and HIGH widths must equal or exceed the minimum SCL period.
4.2 Sensor Slave Address
4.4 for further information.
4.3 I2C Communication
remain stable while SCL is HIGH to prevent false START or STOP conditions.
Figure 13. START and STOP Condition Waveform a read from slave to master or set to 0 to indicate a write from master to slave. All transfers consist of 8 bits and a response bit: 0 for Acknowledge (ACK) or 1 for Not Acknowledge (NACK). measurement as described in Table 4. Table 4. Commands Code and Description humidity and temperature readings using the equations in section 4.4.3. Table 5. Measurement Command Modes
4.4 Measurements and Commands
- Hold measurement commands: The HS401x series sensor holds the SCL line low during the measurement
- No-hold measurement commands: The HS401x series sensor does not hold the SCL line low, and the
minimum clock frequency when in this mode. A hold measurement sequence consists of the following steps, as illustrated in Figure 14.
- Wake up the HS401x series sensor from sleep mode by sending its I2C address with a write bit, and initiate
a measurement by sending the desired hold measurement command.
- Change the direction of communication by sending a start bit, the HS401x I2C address, and a read bit. The
initiating any communications with other slaves on the bus.
- Once the requested measurement is completed by the HS401x series sensor, the SCL line is released and
measurement data on the bus for the master to capture. Figure 14. Typical Hold Measurement Sequence for a Humidity and Temperature Command
A no-hold measurement sequence consists of the following steps, as illustrated in Figure 15.
- Wake up the HS401x series sensor from sleep mode by sending its I2C address with a write bit, and initiate
a measurement by sending the desired no-hold measurement command.
- To read the result from the HS401x series sensor, the master has to send the chip its I2C address and a
master will need to try to read the result again. Figure 15. Typical No-Hold Measurement Sequence for a Humidity and Temperature Command
6 summarizes the conversion times for different resolutions. Table 6. Conversion Times
- Assuming the same resolution settings for both humidity and temperature measurements.
is based on all 4 bytes of measurement data (2 bytes of humidity data followed by 2 bytes of temperature data). For temperature-only measurements, the 2 bytes of humidity data are set to be all 0’s for the CRC calculation. Table 7. CRC Checksum Properties
4.5 Periodic Measurement Mode
sequence is illustrated in Figure 16.
Figure 16. Sequence to Retrieve the Latest Results in Periodic Measurement Mode activate the periodic measurements. Figure 17. Sequence to Stop Periodic Measurements
4.6 Alert Feature
- The Alert pin can be used to indicate when a measurement is active in Periodic Measurement Mode. This is
the default behavior of the Alert pin upon power-up.
- The Alert pin can be used to trigger an interrupt on the system microcontroller so an appropriate action can
be taken if the temperature or humidity is outside of the desired limits. These features are described in the following two sub-sections. activated, the Alert pin will have a logic low level between measurements and a logic high during measurements. humidity alerts are disabled (see Table 11). If Periodic Measurement Mode is not active, the Alert pin will remain at a logic high level.
The registers used to enable the Alert feature and the temperature / humidity thresholds are shown in Table 11. Table 8. Alert Status Bits Figure 20. Data Returned from HS401x when the Alert Feature is Enabled in Periodic Measurement Mode
4.7 Accessing Configurable HS401x Registers
configuration registers and settings will be described in section 4.8.
- Read the entire configuration register using the sequence described in section 4.7.1.
- Mask the register such that only the required bits are changed, according to the configuration parameters in
- Write the new register back to the appropriate address using the Write Register command sequence
All configuration registers will be reset to their default values if the power supply to the chip is cutoff.
4.8 Configuration Bits
resolution settings for the temperature and humidity measurements, as summarized in Table 9. Table 9. Temperature and Humidity Measurement Resolution Settings The registers that are used to activate and configure the periodic measurement settings are shown in Table 10. Table 10. Periodic Measurement Settings Table 11. Alert Feature Settings setting a bit to 0b0 means this specific alert condition is disabled.
R36DS0023EU0103 Rev.1.03 Jun 6, 2022 Page 19 Setting Register Address (HEX) Bits Description Trigger Threshold for Temperature High Alert 0x08, 0x07 <13:0> Registers 0x08, 0x07 set the threshold for when the “Temperature High” alert is triggered. When the measured temperature goes above the value in this register, the Alert pin will be triggered. The temperature used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a temperature threshold using the same conversion equation shown in section 4.4.3. Reset Threshold for Temperature High Alert 0x06, 0x05 <13:0> Registers 0x06, 0x05 set the threshold for when the “Temperature High” alert condition is reset. After the alert is triggered, it will only be reset after the measured temperature goes below the value in this register. The temperature used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a temperature threshold using the same conversion equation shown in section 4.4.3. Trigger Threshold for Temperature Low Alert 0x0A, 0x09 <13:0> Registers 0x0A, 0x09 set the threshold for when the “Temperature Low” alert is triggered. When the measured temperature goes below the value in this register, the Alert pin will be triggered. The temperature used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a temperature threshold using the same conversion equation shown in section 4.4.3. Reset Threshold for Temperature Low Alert 0x0C, 0x0B <13:0> Registers 0x0C, 0x0B set the threshold for when the “Temperature Low” alert condition is reset. After the alert is triggered, it will only be reset after the measured temperature goes above the value in this register. The temperature used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a temperature threshold using the same conversion equation shown in section 4.4.3. Trigger Threshold for Relative Humidity High Alert 0x10, 0x0F <13:0> Registers 0x10, 0x0F set the threshold for when the “RH High” alert is triggered. When the measured RH goes above the value in this register, the Alert pin will be triggered. The humidity used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a humidity threshold using the same conversion equation shown in section 4.4.3. 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0's Trigger Threshold [13:8] Trigger Threshold [7:0] Register 0x08 Register 0x07 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 Register 0x06 Register 0x05 0's Reset Threshold [13:8] Reset Threshold [7:0] 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 Register 0x0A Register 0x09 0's Trigger Threshold [13:8] Trigger Threshold [7:0] 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 Register 0x0C Register 0x0B 0's Reset Threshold [13:8] Reset Threshold [7:0] 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0's Trigger Threshold [13:8] Trigger Threshold [7:0] Register 0x10 Register 0x0F
R36DS0023EU0103 Rev.1.03 Jun 6, 2022 Page 20 Setting Register Address (HEX) Bits Description Reset Threshold for Relative Humidity High Alert 0x0E, 0x0D <13:0> Registers 0x0E, 0x0D set the threshold for when the “RH High” alert condition is reset. After the alert is triggered, it will only be reset after the measured RH goes below the value in this register. The humidity used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a humidity threshold using the same conversion equation shown in section 4.4.3. Trigger Threshold for Relative Humidity Low Alert 0x12, 0x11 <13:0> Registers 0x12, 0x11 set the threshold for when the “RH Low” alert is triggered. When the measured RH goes below the value in this register, the Alert pin will be triggered. The humidity used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a humidity threshold using the same conversion equation shown in section 4.4.3. Reset Threshold for Relative Humidity Low Alert 0x14, 0x13 <13:0> Registers 0x14, 0x13 sets the threshold for when the “RH Low” alert condition is reset. After the alert is triggered, it will only be reset after the measured RH goes above the value in this register. The humidity used for the threshold is composed of 14-bits as follows: This 14-bit value is converted into a humidity threshold using the same conversion equation shown in section 4.4.3.
4.9 Reading the Sensor ID Number
The sensor ID is a 32-bit number that can be used to identify a given device. Each sensor has a unique ID that can be used for traceability. The sequence to read the sensor ID is as follows: 1. Wake up the HS401x series sensor from sleep mode by sending its I2C address with a write bit, and initiate a Read Sensor ID command by sending the command 0xD7. 2. Change the direction of communication by sending the HS401x I2C address and a read bit. The SCL line is held low by the sensor while it retrieves the ID from internal memory to prevent data corruption. The sensor takes approximately 10µs to retrieve the ID from internal memory. 3. Once the request is completed by the HS401x series sensor, the SCL line is released and the chip waits for the SCL clock signal to send the results. The sensor will then transmit the 4-byte sensor ID on the bus for the master to capture, MSB first. The command sequence to read the sensor ID is displayed in Figure 23. 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 Register 0x0E Register 0x0D 0's Reset Threshold [13:8] Reset Threshold [7:0] 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 Register 0x12 Register 0x11 0's Trigger Threshold [13:8] Trigger Threshold [7:0] 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0's Reset Threshold [13:8] Reset Threshold [7:0] Register 0x14 Register 0x13
Figure 25. Recommended Soldering Profile component with a higher thermal mass means the temperature at the small sensor will be higher than expected. For manual soldering, the contact time must be limited to 5 seconds with a maximum iron temperature of 350°C. strongly recommended that a “no-clean” solder paste is used to avoid the need to wash the PCB. in the relative humidity readings, which will slowly disappear as the sensor get exposed to ambient conditions.
the board, openings can be milled into the PCB as shown in Figure 26. Figure 26. Milled PCB Openings for Thermal Isolation Avoid using polyethylene antistatic bags as they may affect sensor accuracy.
- Bake at a temperature of 100°C with a humidity < 10%RH for 10 to 12 hours.
- Rehydrate the sensor at a humidity of 75%RH and a temperature between 20 to 30°C for 12 to 14 hours.
specified parameters are guaranteed if not stated otherwise.
R36DS0023EU0103 Rev.1.03 Jun 6, 2022 Page 24 10. Package Outline Drawings The package outline drawings are located at the end of this document and are accessible from the Renesas website. The package information is the most current data available and is subject to change without revision of this document. 11. Ordering Information Part Number Package Description Carrier Type Temperature Range HS4011 Digital Relative Humidity and Temperature Sensor, with Membrane. ±1.5%RH (Typical), 2.5 × 2.5 × 0.9mm, 8-LGA Reel -40°C to +125°C HS4012 Digital Relative Humidity and Temperature Sensor, with Membrane. ±1.8%RH (Typical), 2.5 × 2.5 × 0.9mm, 8-LGA Reel -40°C to +125°C HS4013 Digital Relative Humidity and Temperature Sensor, with Membrane. ±2.5%RH (Typical), 2.5 × 2.5 × 0.9mm, 8-LGA Reel -40°C to +125°C HS4014 Digital Relative Humidity and Temperature Sensor, with Membrane. ±3.5%RH (Typical), 2.5 × 2.5 × 0.9mm, 8-LGA Reel -40°C to +125°C 12. Revision History Revision Date Description
1.02 Apr 27, 2022
Added AEC-Q100 qualified, -40°C to +105C Added Industrial JEDEC qualified, -40°C to +125C Completed other minor changes 1.01 Apr 14, 2022 Added Table 11. Alert Feature Settings. Added AEC-Q100 qualified. 1.00 Feb 2, 2022 Initial release.
© Renesas Electronics Corporation
© Renesas Electronics Corporation Package Revision HistoryRev No.Date CreatedDescriptionSep t 6, 202000Initial Release
TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan www.renesas.com Contact Information For further information on a product, technology, the most up-to-date version of a document, or your nearest sales office, please visit: www.renesas.com/contact/ Trademarks Renesas and the Renesas logo are trademarks of Renesas Electronics Corporation. All trademarks and registered trademarks are the property of their respective owners. IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. Renesas grants you permission to use these resources only for development of an application that uses Renesas products. Other reproduction or use of these resources is strictly prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property. Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims, damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products. (Rev.1.0 Mar 2020) © 2021 Renesas Electronics Corporation. All rights reserved.