Product Folder Order Now Technical Documents Support & Community Tools & Software HDC2010 SNAS693 – JULY 2017 HDC2010 Low Power Humidity and Temperature Digital Sensors 1 Features 3 Description • • • • The HDC2010 is an integrated humidity and temperature sensor that provides high accuracy measurements with very low power consumption, in an ultra-compact WLCSP (Wafer Level Chip Scale Package). The sensing element of the HDC2010 is placed on the bottom part of the device, which makes the HDC2010 more robust against dirt, dust, and other environmental contaminants. The capacitivebased sensor includes new integrated digital features and a heating element to dissipate condensation and moisture. The HDC2010 digital features include programmable interrupt thresholds to provide alerts/system wakeups without requiring a microcontroller to be continuously monitoring the system. This, combined with programmable sampling intervals, low inherent power consumption, and support for 1.8V supply voltage, make the HDC2010 well suited for battery-operated systems. 1 • • • • • Relative Humidity Range 0% to 100% Humidity Accuracy ±2% Sleep Current 50nA Average Supply Current (1 measurement per second) – RH only (11 bit) 300nA – RH (11 bit) + Temperature (11 bit) 550nA Temperature Range: – Operating: –40°C to 85°C – Functional: –40°C to 125°C Temperature Accuracy: ±0.2°C typ. Supply Voltage: 1.62 V to 3.6 V Automatic Sampling Rate (5 Hz, 2 Hz, 1 Hz, 0.2 Hz, 0.1 Hz, 1/60 Hz, 1/120 Hz) or On Demand I2C Interface 2 Applications • • • • • • • • • • • • • • Smart Thermostats Smart Home Assistants Refrigerators Refrigerated Transport Washer/Dryers HVAC Systems Gas Sensing Communications Equipment Environmental Tags Smoke and Heat Detectors Inkjet Printers Surveillance Cameras CPAP Machines Wearables The HDC2010 provides high accuracy measurement capability for a wide range of environmental monitoring applications and Internet of Things (IoT) such as smart thermostats, smart home assistants and wearables. The HDC2010 can also be used to provide critical temperature and humidity data for cold chain transportation and storage of perishable goods to help ensure products like food and pharmaceuticals arrive fresh. The HDC2010 is factory-calibrated to 0.2°C temperature accuracy and 2% relative humidity accuracy and includes a heating element to burn away condensation and moisture for increased reliability. The HDC2010 supports operation from -40°C to 125°C and from 0% to 100% relative humidity. Device Information(1) PART NUMBER PACKAGE HDC2010 BODY SIZE (NOM) 1.5 mm x 1.5 mm x 0.675 mm DSBGA (6-bump) (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application RH Accuracy 10 Typical 9 Accuracy (r%RH) 8 7 6 5 4 3 2 1 0 0 10 20 30 40 50 60 70 80 90 100 RH (%RH) 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. HDC2010 SNAS693 – JULY 2017 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 4 4 4 4 4 6 6 7 Absolute Maximum Ratings ..................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... I2C Interface Electrical Characteristics ..................... I2C Interface Timing Requirements........................... Typical Characteristics .............................................. 7.5 Programming .......................................................... 15 7.6 Register Maps ......................................................... 16 8 8.1 Application Information............................................ 25 8.2 Typical Application ................................................. 25 8.3 Do's and Don'ts ...................................................... 26 9 Power Supply Recommendations...................... 28 9.1 Average Current Consumption Calculation............. 28 10 Layout................................................................... 28 10.1 Layout Guidelines ................................................. 28 10.2 Layout Example .................................................... 28 11 Device and Documentation Support ................. 30 11.1 11.2 11.3 11.4 11.5 11.6 Detailed Description .............................................. 8 7.1 7.2 7.3 7.4 Application and Implementation ........................ 25 Overview ................................................................... 8 Functional Block Diagram ......................................... 8 Feature Description................................................... 8 Device Functional Modes........................................ 14 Documentation Support ....................................... Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 30 30 30 30 30 30 12 Mechanical, Packaging, and Orderable Information ........................................................... 31 4 Revision History 2 DATE REVISION NOTES July 2017 * Initial release. Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 5 Pin Configuration and Functions WLCSP (DSBGA) 6 Pin YPA Top View Pin Functions PIN I/O TYPE (1) DESCRIPTION NAME NO. VDD A1 P Positive Supply Voltage ADDR B1 I Address select pin – hardwired to VDD or GND. GND: slave address: 1000000 VDD: slave address: 1000001 GND C1 G Ground SDA A2 I/O Serial data line for I2C, open-drain; requires a pull-up resistor to VDD SCL B2 I Serial clock line for I2C, open-drain; requires a pull-up resistor to VDD DRDY / INT C2 O Data ready/Interrupt (1) P=Power, G=Ground, I=Input, O=Output Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 3 HDC2010 SNAS693 – JULY 2017 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings (1) MIN MAX UNIT VDD Input Voltage -0.3 3.9 V GND Input Voltage -0.3 3.9 V ADDR Input Voltage -0.3 3.9 V SCL Input Voltage -0.3 3.9 V SDA Input Voltage -0.3 3.9 V Tstg Storage temperature -65 150 °C (1) Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins (1) ±2000 Charged device model (CDM), per JEDEC specification JESD22-C101, all pins (2) ±250 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating range (unless otherwise noted) MIN VDD Voltage Supply NOM 1.62 MAX UNIT 3.6 V 6.4 Thermal Information HDC2010 THERMAL METRIC (1) DSBGA (YPA) UNIT 6 PINS RθJA Junction-to-ambient thermal resistance 114.8 °C/W RθJC(top) RθJB Junction-to-case (top) thermal resistance 0.8 °C/W Junction-to-board thermal resistance 35.2 °C/W ΨJT Junction-to-top characterization parameter 0.6 °C/W ΨJB Junction-to-board characterization parameter 35.4 °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.5 Electrical Characteristics at TA = 30°C, VDD = 1.8 V, 20% ≤ RH ≤ 80% (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ELECTRICAL SPECIFICATION VDD 4 Supply Voltage Operating Range Submit Documentation Feedback 1.62 3.6 V Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 Electrical Characteristics (continued) at TA = 30°C, VDD = 1.8 V, 20% ≤ RH ≤ 80% (unless otherwise noted) PARAMETER TEST CONDITIONS RH measurement MIN (1) 650 890 550 730 Sleep Mode 0.05 0.1 0.3 Average at 1 measurement every 10 seconds, RH (11 bit) + temperature (11 bit) (1) (2) Heater (3) μA 0.55 Average at 1 measurement every 2 seconds, RH (11 bit) + temperature (11 bit) (1) (2) IDDHEAT UNIT 0.3 Average at 1 measurement/second, RH (11 bit) + temperature (11 bit) (1) (2) Supply current MAX Temperature measurement (1) Average at 1 measurement/second, RH or temperature only (1) (2) IDD TYP 0.105 Startup (average on startup time) 80 VDD = 3.3 V 90 mA RELATIVE HUMIDITY SENSOR RHACC Accuracy (4) RHREP Repeatability (7) RHHYS Hysteresis (8) RHRT RHCT RHOR RHLTD (5) (6) Response Time (9) Conversion-time (7) Operating range Long-term Drift ±2 14 bit resolution t63% step (10) %RH %RH 8 s 275 11 bit accuracy 400 14 bit accuracy 660 Non-condensing (11) %RH ±1 9 bit accuracy 0 (12) ±3 ±0.1 µs 100 ±0.25 %RH %RH/yr TEMPERATURE SENSOR TEMPOR Operating range TEMPACC Accuracy (7) 5°C < TA < 60°C -40 ±0.2 TEMPREP Repeatability (7) 14 bit resolution ±0.1 9 bit accuracy 225 TEMPCT Conversion-time (7) 11 bit accuracy 350 14 bit accuracy 610 125 °C ±0.4 °C °C µs (1) (2) (3) (4) (5) I2C read/write communication and pull up resistors current through SCL, SDA not included. Average current consumption while conversion is in progress. Heater operating range – 40°C to 85°C. Excludes hysteresis and long-term drift. Excludes the impact of dust, gas phase solvents and other contaminants such as vapors from packaging materials, adhesives, or tapes, etc. (6) Limits apply over the humidity operating range 20 to 80% RH (non-condensing) from 0 to 60°C. (7) This parameter is specified by design and/or characterization and is not tested in production. (8) The hysteresis value is the difference between an RH measurement in a rising and falling RH environment, at a specific RH point. (9) Actual response times will vary dependent on system thermal mass and air-flow. (10) Time for the RH output to change by 63% of the total RH change after a step change in environmental humidity. (11) Recommended humidity operating range is 20 to 80% RH (non-condensing) over 0 to 60°C. Prolonged operation beyond these ranges may result in a shift of sensor reading, with slow recovery time. (12) Drift due to aging effects at typical conditions (30°C and 20% to 50% RH). This value may be impacted by dust, vaporized solvents, outgassing tapes, adhesives, packaging materials, etc. Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 5 HDC2010 SNAS693 – JULY 2017 www.ti.com Electrical Characteristics (continued) at TA = 30°C, VDD = 1.8 V, 20% ≤ RH ≤ 80% (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT HUMIDITY AND TEMPERATURE On demand 5 2 ODR Output Data Rate 1 Selectable Output data rate 0.2 Hz 0.1 1/60 1/120 6.6 I2C Interface Electrical Characteristics At TA = 30°C, VDD = 3.3 V (unless otherwise noted) PARAMETER VIH Input High Voltage VIL Input Low Voltage VOL Output Low Voltage TEST CONDITIONS MIN TYP MAX 0.7 x VDD V Sink current 3 mA 0.3 x VDD V 0.4 V 0.1 x VDD HYS Hysteresis CIN Input Capacitance on all digital pins UNIT V 0.5 pF 6.7 I2C Interface Timing Requirements At TA = 30°C, VDD = 1.8 V (unless otherwise noted) MIN NOM MAX UNIT 400 kHz fSCL Clock Frequency 10 tLOW Clock Low Time 1.3 µs tHIGH Clock High Time 0.6 µs tSP Pulse width of spikes that be suppressed by input filter tSTART Shutdown entry delay (1) (1) 10 50 ns 15 ms This parameter is specified by design and/or characterization and it is not tested in production. SDA tLOW tSP SCL tHIGH START REPEATED START STOP START Figure 1. I2C Timing 6 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 6.8 Typical Characteristics Unless otherwise noted. TA = 30°C, VDD = 1.8V. 1 10 Typical 9 0.9 8 0.8 7 0.7 Accuracy (r°C) Accuracy (r%RH) Typical 6 5 4 0.6 0.5 0.4 3 0.3 2 0.2 1 0.1 0 -40 0 0 10 20 30 40 50 60 70 80 90 100 -25 -10 5 20 T = -40°C T = -20°C T = 0°C T = 25°C T = 85°C T = 125°C 700 750 700 IDD (nA) IDD (nA) 80 95 110 125 VDD = 1.62V VDD = 1.8V VDD = 2.5V VDD = 3V VDD = 3.3V VDD = 3.6V 650 650 600 600 550 550 500 500 450 450 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 400 -40 3.6 -15 10 35 60 85 110 125 Temp (°C) VDD (V) Figure 4. Supply Current vs. Supply Voltage, Average at 1 measurement/second, RH (11bit) + temperature (11 bit) Figure 5. Supply Current vs. Temperature, Average at 1 measurement/second, RH (11bit) +temperature (11 bit) 400 400 T = -40°C T = -20°C T = 0°C T = 25°C T = 50°C T = 85°C T = 125°C 350 300 350 300 VDD = 1.62V VDD = 1.8V VDD = 2.5V VDD = 3V VDD = 3.3V VDD = 3.6V 250 IDD (nA) 250 IDD (nA) 65 800 750 200 200 150 150 100 100 50 50 0 1.6 50 Figure 3. Temperature Accuracy vs. Temperature Figure 2. RH Accuracy vs. RH 800 400 1.6 35 Temp (°C) RH (%RH) 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 0 -40 -15 10 35 60 85 110 125 Temp (°C) VDD (V) Figure 6. Supply Current vs. Supply Voltage, Sleep Mode Figure 7. Supply Current vs. Temperature, Sleep Mode Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 7 HDC2010 SNAS693 – JULY 2017 www.ti.com 7 Detailed Description 7.1 Overview The HDC2010 is a digital humidity sensor with integrated temperature sensor that provides excellent measurement accuracy over the long term and at very low power. Measurement results can be read out through the I2C compatible interface. Resolution is based on the measurement time and can be 9, 11, or 14 bits for humidity; 11 or 14 bits for temperature. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Power Consumption One of the key features of the HDC2010 is its low power consumption, which makes the device suitable in battery or power harvesting applications. In these applications the HDC2010 spends most of the time in sleep mode: with a typical 50nA of current consumption in sleep mode, the averaged current consumption is minimal. Its low consumption in measurement mode minimizes any self-heating. 7.3.2 Heater The heater is an integrated resistive element that can be used to test the sensor or to drive condensation off the sensor. The heater can be activated using HEAT_EN, bit 3 in the Reset and DRDY/INT Configuration Register (0x0E). The heater helps in reducing the accumulated offset after long exposure at high humidity conditions. The current consumption of the heater is typically 130mA, allowing a temperature increase of about 80°C. 8 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 Feature Description (continued) 7.3.3 Interrupt Description DataReady or interrupt can be generated based on different events and or conditions. Register 0x07 Interrupt Configuration enable and disable the interrupt/dataready generation based output data and threshold values. INT/DRDY pins behaviors is related to the interrupt/dataready generation and the 0x0E configuration bits DRDY/INT_EN, INT_POL and INT_MODE DRDY/INT_EN put in High impedance or enables the INT pin. INT_POL and INT_MODE define the polarity and the behaviors of the INT signal. 7.3.3.1 DRDY When DRDY_MASK is set and a humidity and /or temperature conversion is completed the DRDY_STATUS bit is set to 1. Based on the Configuration register settings the DRDY/INT pin behaves in different way. To enable the DRDY pin the DRDY/INT_EN bit (0x0E bit[2]) has to be set to 1 otherwise the pin is put in high impedance. Bit INT_POL defines the polarity of the DRDY/INT pin. DRDY_STATUS Previous Data New Data Available 0 1 INT_POL = 1 DRDY/INT Figure 8. Data Ready Interrupt - Active High (INT_POL = 1) DRDY_STATUS Previous Data New Data Available 0 1 INT_POL = 0 DRDY/INT Figure 9. Data Ready Interrupt - Active Low (INT_POL = 0) Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 9 HDC2010 SNAS693 – JULY 2017 www.ti.com Feature Description (continued) 7.3.4 INTERRUPT on Threshold 7.3.4.1 Temperature High When TH_MASK is set and the temperature is over the threshold value program in the Temperature Threshold HIGH register the TH_STATUS bit is set to 1. The TH_STATUS bit and the DRDY/INT pin behave based on the INT_POL and INT_MODE bits. When INT_MODE set to 1 the TH_STATUS bit remains set to 1 until it is read. The polarity of the DRDY/INT pin is set by INT_POL. When INT_MODE set to 0 the TH_STATUS bit is based on the current temperature value. The polarity of the DRDY/INT pin is set by INT_POL T[°C] Temperature Threshold High Time TH_STATUS bit read INT_MODE = µ0¶ TH_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 0 1 INT_MODE = µ1¶ TH_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 1 0 Figure 10. INTERRUPT on Threshold - Temperature High 10 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 Feature Description (continued) 7.3.4.2 Temperature Low When TL_MASK is set and the temperature is under the threshold value program in the Temperature Threshold LOW register the TL_STATUS bit is set to 1. The TL_STATUS bit and the DRDY/INT pin behave based on the INT_POL and INT_MODE bits. When INT_MODE set to 1 the TL_STATUS bit remains set to 1 until it is read. The polarity of the DRDY/INT pin is set by INT_POL. When INT_MODE set to 0 the TL_STATUS bit is based on the current temperature value. The polarity of the DRDY/INT pin is set by INT_POL. T[°C] Temperature Threshold Low Time TL_STATUS bit read INT_MODE = µ0¶ TL_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 0 1 INT_MODE = µ1¶ TL_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 1 0 Figure 11. INTERRUPT on Threshold - Temperature Low Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 11 HDC2010 SNAS693 – JULY 2017 www.ti.com Feature Description (continued) 7.3.4.3 Humidity High When HH_MASK is set and the humidity is over the threshold value program in the Humidity Threshold HIGH register the HH_STATUS bit is set to 1. The HH_STATUS bit and the DRDY/INT pin behave based on the INT_POL and INT_MODE bits. When INT_MODE set to 1 the HH_STATUS bit remains set to 1 until it is read. The polarity of the DRDY/INT pin is set by INT_POL. When INT_MODE set to 0 the HH_STATUS bit is based on the current humidity value. The polarity of the DRDY/INT pin is set by INT_POL. H[%RH] Humidity Threshold High Time HH_STATUS bit read INT_MODE = µ0¶ HH_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 0 1 INT_MODE = µ1¶ HH_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 1 0 Figure 12. INTERRUPT on Threshold - Humidity High 12 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 Feature Description (continued) 7.3.4.4 Humidity Low When HL_MASK is set and the humidity is over the threshold value program in the Humidity Threshold LOW register the HL_STATUS bit is set to 1. The HL_STATUS bit and the DRDY/INT pin behave based on the INT_POL and INT_MODE bits. When INT_MODE set to 1 the HL_STATUS bit remains set to 1 until it is read. The polarity of the DRDY/INT pin is set by INT_POL. When INT_MODE set to 0 the HL_STATUS bit is based on the current humidity value. The polarity of the DRDY/INT pin is set by INT_POL. H[%RH] Humidity Threshold Low Time HL_STATUS bit read INT_MODE = µ0¶ HL_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 0 1 INT_MODE = µ1¶ HL_STATUS INT_POL = µ1¶ DRDY/INT INT_POL = µ0¶ DRDY/INT 0 1 0 Figure 13. INTERRUPT on Threshold - Humidity Low Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 13 HDC2010 SNAS693 – JULY 2017 www.ti.com Feature Description (continued) 7.3.5 INTERRUPT MODE Two possible selectable Interrupt Mode are available. 7.3.5.1 Comparator mode When INT_MODE is set to 1 is possible to activate one or more thresholds at the same time. The HL_STATUS bit remains set to 1 until it is read. The polarity of the DRDY/INT pin is set by INT_POL. 7.3.5.2 Level Mode When INT_MODE is set to 0 is possible to activate only one threshold at time The HL_STATUS bit is based on the current humidity value. The polarity of the DRDY/INT pin is set by INT_POL. 7.4 Device Functional Modes The HDC2010 has two modes of operation: sleep mode and measurement mode. After power up, the HDC2010 is in sleep mode. In this mode, the HDC2010 waits for I2C inputs including commands to configure the conversion times, trigger a measurement, set the ODR and read measurements. Once it receives a command to trigger a measurement, the HDC2010 moves from sleep mode to measurement mode. In measurement mode, the HDC2010 acquires the configured measurements and sets the DRDY/INT pin. After completing the measurement, the HDC2010 returns to sleep mode. HDC2010 has two measurement trigger modes: On-Demand and automatic Output Data Rate. In the On-Demand mode an I2C command triggers the conversion. In the automatic Output Data Rate a conversion frequency is configured among 7 different possibilities (from 5 samples per second down to 1 sample every 2 minutes). HDC2010 moves from sleep to measurement mode automatically based on the selected data rate. At the end of the conversion, the new data overwrites the previous output data. 14 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 7.5 Programming 7.5.1 I2C Serial Bus Address Configuration To communicate with the HDC2010, the master must first address slave devices through a slave address byte. The slave address byte consists of seven address bits and a direction bit that indicates the intent to execute a read or write operation. The HDC2010 features an address pin to allow up to 2 devices to be addressed on a single bus. Table 1 describes the pin logic levels used to connect up to two devices. ADDR must be set before any activity on the interface occurs and remain constant while the device is powered up. Table 1. HDC2010 I2C Slave Address ADR0 ADDRESS (7-BIT ADDRESS) 0 1000000 1 1000001 7.5.2 I2C Interface The HDC2010 operates only as a slave device on the I2C bus interface. It is not allowed to have multiple devices on the same I2C bus with the same address. Connection to the bus is made through the open-drain I/O lines, SDA, and SCL. The SDA and SCL pins feature integrated spike-suppression filters and Schmitt triggers to minimize the effects of input spikes and bus noise. After power-up, the sensor needs at most 3 ms, to be ready to start RH and temperature measurement. After the power-up the sensor is in the sleep mode until a communication or measurement is performed. All data bytes are transmitted MSB first. 7.5.3 Serial Bus Address To communicate with the HDC2010, the master must first address slave devices through a slave address byte. The slave address byte consists of seven address bits, and a direction bit that indicates the intent to execute a read or write operation. 7.5.4 Read and Write Operations To access a particular register on the HDC2010, by writing the appropriate value to the register address. The register address value is the first byte transferred after the device slave address byte with the R/W bit low. Every write operation to the HDC2010 requires a value for the register address (refer to Table 2). When reading from the HDC2010, the last value stored in the register address by a write operation is used to determine which register is read by a read operation. To change the address for a read operation, a new value must be written to the pointer. This transaction is accomplished by issuing the slave address byte with the R/W bit low, followed by the pointer byte. No additional data is required (refer to Table 3). The master can then generate a START condition and send the slave address byte with the R/W bit high to initiate the read command. The address value is incremented automatically enabling the multibyte read and write operation (refer to Table 4 and Table 5). Note that register bytes are sent MSB first, followed by the LSB. A write operation in a read-only register such as (DEVICE ID, MANUFACTURER ID, SERIAL ID) returns a NACK after each data byte; read/write operation to unused address returns a NACK after the pointer; a read/write operation with incorrect I2C address returns a NACK after the I2C address. Table 2. Write Single Byte Master START Slave address (W) Address Slave DATA ACK ACK STOP ACK Table 3. Write Multi Byte Master Slave START Slave address (W) Address ACK DATA ACK DATA ACK ACK ……… Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 STOP 15 HDC2010 SNAS693 – JULY 2017 www.ti.com Table 4. Read Single Byte Master START Slave address (W) Slave Address Start ACK Slave address (W) NACK ACK ACK STOP DATA Table 5. Read Multi Byte Master START Slave address (W) Slave Address ACK Start Slave address (W) ACK ACK ACK ACK DATA …… NACK STOP DATA 7.6 Register Maps The HDC2010 contains data registers that hold configuration information, temperature and humidity measurement results, and status information Table 6. Register Map ADDRESS (HEX) NAME RESET VALUE DESCRIPTION 0x00 TEMPERATURE LOW 0 Temperature [7:0] 0x01 TEMPERATURE HIGH 0 Temperature [15:8] 0x02 HUMIDITY LOW 0 Humidity [7:0] 0x03 HUMIDITY HIGH 0 Humidity [15:8] 0x04 INTERRUPT/DRDY 0 DataReady and interrupt configuration 0x05 TEMPERATURE MAX 0 Max temperature value measured (peak detector 0x06 HUMIDITY MAX 0 Max humidity value measured (peak detector) 0x07 INTERRUPT MASK 0 Interrupt Mask 0x08 TEMP_OFFSET_ADJUST 0 Temperature offset adjustment 0x09 HUM_OFFSET_ADJUST 0 Humidity offset adjustment 0x0A TEMP_THR_L 11111111 Temperature Threshold Low 0x0B TEMP_THR_H 0 Temperature Threshold High 0x0C RH_THR_L 11111111 Humidity threshold Low 0x0D RH_THR_H 0 Humidity threshold High 0x0E RESET&DRDY/INT CONF 0 Soft Reset and Interrupt Configuration 0x0F MEASUREMENT CONF 0 Measurement configuration 0xFC MANUFACTURER ID LOW 01001001 Manufacturer ID Low 0xFD MANUFACTURER ID HIGH 01010100 Manufacturer ID High 0xFE DEVICE ID LOW 11010000 Device ID Low 0xFF DEVICE ID HIGH 00000111 Device ID High 7.6.1 Address 0x00 Temperature LSB Table 7. Address 0x00 Temperature LSB Register 7 6 5 4 3 2 1 0 TEMP[7:0] Table 8. Address 0x00 Temperature LSB Field Descriptions 16 BIT FIELD [7:0] TEMPERATURE [7:0] TYPE R RESET 00000000 DESCRIPTION Temperature LSB Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 7.6.2 Address 0x01 Temperature MSB Table 9. Address 0x01 Temperature MSB Register 7 6 5 4 3 2 1 0 TEMP[15:8] Table 10. Address 0x01 Temperature MSB Field Descriptions BIT FIELD [15:8] TYPE TEMPERATURE [15:8] RESET R 00000000 DESCRIPTION Temperature MSB The temperature register is a 16-bit result register in binary format (the 2 LSBs D1 and D0 are always 0). The result of the acquisition is always a 14 bit value, while the resolution is related to one selected in Measurement Configuration register. The temperature can be calculated from the output data with: Temperature (qC) § TEMPERATURE [15 : 0] · ¨ ¸ u 165 40 © ¹ 216 (1) 7.6.3 Address 0x02 Humidity LSB Table 11. Address 0x02 Humidity LSB Register 7 6 5 4 3 2 1 0 HUMIDITY[7:0] Table 12. Address 0x02 Humidity LSB Field Descriptions BIT FIELD [7:0] TYPE HUMIDITY [7:0] R RESET 00000000 DESCRIPTION Humidity LSB 7.6.4 Address 0x03 Humidity MSB Table 13. Address 0x03 Humidity MSB Register 7 6 5 4 3 HUMIDITY[15:8] 2 1 0 Table 14. Address 0x03 Temperature MSB Field Descriptions BIT [15:8] FIELD HUMIDITY[15:8] TYPE R RESET 00000000 DESCRIPTION Humidity MSB The humidity register is a 16-bit result register in binary format (the 2 LSBs D1 and D0 are always 0). The result of the acquisition is always a 14 bit value, while the resolution is related to one selected in Measurement Configuration register. The humidity can be calculated from the output data with: Humidity (%RH) § HUMIDITY [15 : 0] · ¨ ¸ u 100 216 © ¹ (2) Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 17 HDC2010 SNAS693 – JULY 2017 www.ti.com 7.6.5 Address 0x04 Interrupt DRDY Table 15. Address 0x04 Interrupt DRDY Register 7 DRDY_STATU S 6 HH_STATUS 5 HL_STATUS 4 TH_STATUS 3 TL_STATUS 2 RES 1 RES 0 RES Table 16. Address 0x04 Humidity MSB Field Descriptions BIT FIELD TYPE RESET DESCRIPTION 7 DRDY_STATUS R/W 0 DataReady bit status 0 = Data Not Ready 1 = Data Ready DRDY_STAUS is cleared to 0 when read 6 HH_STATUS R/W 0 Temperature threshold HIGH Interrupt status 0 = No interrupt 1 = Interrupt TH_STATUS is cleared to 0 when read 5 HL_STATUS R/W 0 Temperature threshold LOW Interrupt status 0 = No interrupt 1 = Interrupt TL_STATUS is cleared to 0 when read 4 TH_STATUS R/W 0 Humidity threshold HIGH Interrupt status 0 = No interrupt 1 = Interrupt HH_STATUS is cleared to 0 when read 3 TL_STATUS R/W 0 Humidity threshold LOW Interrupt status 0 = No interrupt 1 = Interrupt HL_STATUS is cleared to 0 when read 2 RES 0 Reserved 1 RES 0 Reserved 0 RES 0 Reserved DRDY_STATUS indicates that temperature and/or humidity conversion is terminated. This bit is cleared when the Interrupt/DRDY register is read or the output registers TEMPERATURE_HIGH, TEMPERATURE_LOW, HUMIDITY_HIGH and HUMIDITY_LOW are read. The TL_STATUS indicates that the Temperature Threshold LOW value is exceeded. The behavior is defined by 0x0E Configuration register value. The bit is cleared when the register Interrupt DRDY is read. The TH_STATUS indicates that the Temperature Threshold HIGH value is exceeded. The behavior is defined by 0x0E Configuration register value. The bit is cleared when the register Interrupt DRDY is read. The HH_STATUS indicates that the Humidity Threshold HIGH value is exceeded. The behavior is defined by 0x0E Configuration register value. The bit is cleared when the register Interrupt DRDY is read. The HL_STATUS indicates that the Humidity Threshold LOW value is exceeded. The behavior is defined by 0x0E Configuration register value. The bit is cleared when the register Interrupt DRDY is read. DRDY/INT pin behaves like the STATUS bits based on the 0x0E Configuration register value. 18 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 7.6.6 Address 0x05 Temperature MAX Table 17. Address 0x05 Temperature MAX Register 7 6 5 4 3 TEMPERATUREMAX[7:0] 2 1 0 Table 18. Address 0x05 Temperature Max Field Descriptions BIT FIELD [7:0] TYPE TEMPERATUREMAX[7:0] R/W RESET 00000000 DESCRIPTION Temperature max value measured (peak detection) Write 0x00 to erase the last value The temperature can be calculated from the output data with: (3) This register implements temperature peak detector function. It stores the highest temperature value converted after the power up. Value is reset at power up and/or with soft reset procedure. 7.6.7 Address 0x06 Humidity MAX Table 19. Address 0x06 Humidity MAX Register 7 6 5 4 3 HUMIDITYMAX[7:0] 2 1 0 Table 20. Address 0x06 Humidity MAX Field Descriptions BIT [7:0] FIELD HUMIDITYMAX[7:0] TYPE R/W RESET 00000000 DESCRIPTION Humidity max value measured (peak detection) Write 0x00 to erase the last value The humidity can be calculated from the output data with: (4) This register implements humidity peak detector function. It stores the highest humidity value converted after the power up. Value is reset at power up and/or with soft reset procedure. Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 19 HDC2010 SNAS693 – JULY 2017 www.ti.com 7.6.8 Address 0x07 Interrupt Configuration Table 21. Address 0x07 Interrupt Configuration Register 7 DRDY_MASK 6 TH_MASK 5 TL_MASK 4 HH_MASK 3 HL_MASK 2 RES 1 RES 0 RES Table 22. Address 0x07 Humidity MSB Field Descriptions BIT FIELD TYPE RESET DESCRIPTION 7 DRDY_MASK R/W 0 DataReady Interrupt mask 0 = DataReady Interrupt generator disable 1 = DaReady Interrupt generator enable 6 TH_MASK R/W 0 Temperature threshold HIGH Interrupt mask 0 = Temperature high Interrupt generator enable 1 = Temperature high Interrupt generator disable 5 TL_MASK R/W 0 Temperature threshold LOW Interrupt mask 0 = Temperature low Interrupt generator enable 1 = Temperature low Interrupt generator disable 4 HH_MASK R/W 0 Humidity threshold HIGH Interrupt mask 0 = Humidity high Interrupt generator enable 1 = Humidity high Interrupt generator disable 3 HL_MASK R/W 0 Humidity threshold LOW Interrupt mask 0 = Humidity low Interrupt generator enable 1 = Humidity Low Interrupt generator disable 2 RES 0 Reserved 1 RES 0 Reserved 0 RES 0 Reserved 7.6.9 Address 0x08 Temperature Offset Adjustment Table 23. Address 0x08 Temperature Offset Adjustment Register 7 6 5 4 3 TEMP_OFFSET_ADJUST[7:0] 2 1 0 Table 24. Address 0x08 Temperature Offset Adjustment Field Descriptions BIT FIELD [7:0] TYPE TEMP_OFFSET_ADJUST [7:0] R/W RESET 00000000 DESCRIPTION Temperature offset adjustment. Added to the converted Temperature value The temperature can be adjusted adding the following values that are enable settings the equivalents bits: 7 –20.62 6 10.32 5 5.16 4 2.58 3 1.28 2 0.64 1 0.32 0 0.16 The value is added to the converted temperature value for offset adjustment. Converted Value + Temperature Output User Temperature Offset Figure 14. Temperature Offset 20 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 7.6.10 Address 0x09 Humidity Offset Adjustment Table 25. Address 0x09 Humidity Offset Adjustment Register 7 6 5 4 3 HUM_OFFSET_ADJUST [7:0] 2 1 0 Table 26. Address 0x09 Humidity Offset Adjustment Field Descriptions BIT FIELD [7:0] TYPE HUM_OFFSET_ADJUST [7:0] R/W RESET 00000000 DESCRIPTION Humidity offset adjustment. Added to the converted Humidity value The humidity can be adjusted adding the following values that are enable settings the equivalents bits: 7 –25 6 12.5 5 6.3 4 3.1 3 1.6 + Converted Value 2 0.8 1 0.4 0 0.2 1 0 Humidity Output User Humidity Offset Figure 15. Humidity Offset 7.6.11 Address 0x0A Temperature Threshold HIGH Table 27. Address 0x0A Temperature Threshold HIGH Register 7 6 5 4 3 TEMP_THRES_HIGH[7:0] 2 Table 28. Address 0x0A Temperature Threshold HIGH Field Descriptions BIT FIELD [7:0] TYPE TEMP_THRES_HIGH[7:0] Temperature threshold high (qC) R/W RESET 11111111 DESCRIPTION Temperature threshold HIGH value § TEMP_THRES_HIGH [7 : 0] · ¨ ¸ u 165 40 © ¹ 28 (5) 7.6.12 Address 0x0B Temperature Threshold LOW Table 29. Address 0x0B Temperature Threshold LOW Register 7 6 5 4 3 TEMP_THRES_LOW[7:0] 2 1 0 Table 30. Address 0x0B Temperature Threshold LOW Field Descriptions BIT [7:0] FIELD TYPE TEMP_THRES_LOW[7:0] Temperature threshold low (qC) R/W RESET 00000000 DESCRIPTION Temperature threshold LOW value § TEMP_THRES_LOW [7 : 0] · ¨ ¸ u 165 40 28 © ¹ (6) Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 21 HDC2010 SNAS693 – JULY 2017 www.ti.com 7.6.13 Address 0x0C Humidity Threshold HIGH Table 31. Address 0x0C Humidity Threshold HIGH Register 7 6 5 4 3 HUMI_THRES_HIGH[7:0] 2 1 0 Table 32. Address 0x0C Humidity Threshold HIGH Field Descriptions BIT FIELD [7:0] TYPE HUMI_THRES_HIGH[7:0] Humidity threshold high (%RH) R/W RESET DESCRIPTION 11111111 Humidity threshold HIGH value § HUMI_THRES_HIGH [7 : 0] · ¨ ¸ u 100 © ¹ 28 (7) 7.6.14 Address 0x0D Humidity Threshold LOW Table 33. Address 0x0D Humidity Threshold LOW Register 7 6 5 4 3 HUMI_THRES_LOW[7:0] 2 1 0 Table 34. Address 0x0D Humidity Threshold LOW Field Descriptions BIT FIELD [7:0] TYPE HUMI_THRES_LOW[7:0] Humidity threshold low (qC) R/W RESET DESCRIPTION 00000000 Humidity threshold LOW value § HUMI_THRES_LOW [7 : 0] · ¨ ¸ u 100 28 © ¹ (8) 7.6.15 Address 0x0E Reset and DRDY/INT Configuration Register Table 35. Address 0x0E Reset and DRDY/INT Configuration Register 7 SOFT_RES 6 ODR[2] 5 ODR[1] 4 ODR[0] 3 HEAT_EN 2 DRDY/INT_EN 1 INT_POL 0 INT_MODE Table 36. Address 0x0E Reset and DRDY/INT Configuration Field Descriptions BIT FIELD 7 22 TYPE RESET DESCRIPTION SOFT_RES R/W 0 0 = Normal Operation mode, this bit is self-clear 1 = Soft Reset EEPROM value reload and registers reset [6:4] ODR[2:0] R/W 000 Output Data Rate 000 = No repeated measurements. Trigger on demand 001 = 1/120Hz (1 samples every 2 minutes) 010 = 1/60Hz (1 samples every minute) 011 = 0.1Hz (1 samples every 10 seconds) 100 = 0.2 Hz (1 samples every 5 second) 101 = 1Hz (1 samples every second) 110 = 2Hz (2 samples every second) 111 = 5Hz (5 samples every second) 3 HEAT_EN R/W 0 0 = Heater off 1 = Heater on 2 DRDY/INT_EN R/W 0 DRDY/INT_EN pin configuration 0 = High Z 1 = Enable 1 INT_POL R/W 0 Interrupt polarity 0 = Active Low 1 = Active High 0 INT_MODE 0 Interrupt mode 0 = Level sensitive 1 = Comparator mode Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 7.6.16 Address 0x0F Measurement Configuration Table 37. Address 0x0F Measurement Configuration Register 7 TRES[1] 6 TRES[0] 5 HRES[1] 4 HRES[0] 3 RES 2 1 MEAS_CONF[1 MEAS_CONF[0 ] ] 0 MEAS_TRIG Table 38. Address 0x0F Measurement Configuration Field Descriptions BIT FIELD TYPE RESET DESCRIPTION 7:6 TRES[1:0] R/W 00 Temperature resolution 00: 14 bit 01: 11 bit 10: 9 bit 11: NA (TBC) 5:4 HRES[1:0] R/W 00 Humidity resolution 00: 14 bit 01: 11 bit 10: 9 bit 11: NA (TBC) RES R/W 0 Reserved MEAS_CONF[1:0] R/W 00 Measurement configuration 00: Humidity + Temperature 01: Temperature only 10: Humidity Only 11: NA MEAS_TRIG R/W 0 Measurement trigger 0: no action 1: Start measurement Self-cleaning bit when measurement completed 3 2:1 0 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 23 HDC2010 SNAS693 – JULY 2017 www.ti.com 7.6.17 Manufacturer ID Low Table 39. Manufacturer ID Low Register 7 6 5 4 3 MANUFACTURER ID[7:0] 2 1 0 Table 40. Address 0xFC Manufacturer ID Low Field Descriptions BIT FIELD [7:0] TYPE MANUFACTURER ID [7:0] RESET R 01001001 DESCRIPTION Manufacturer ID LOW value 7.6.18 Manufacturer ID High These registers contain a factory-programmable identification value that identifies this device as being manufactured by Texas Instruments. These registers distinguish this device from other devices that are on the same I2C bus. The manufacturer ID reads 0x5449 Table 41. Manufacturer ID High Register 7 6 5 4 3 MANUFACTURER ID[15:8] 2 1 0 Table 42. Address 0xFD Manufacturer ID High Field Descriptions BIT FIELD [7:0] TYPE MANUFACTURER ID [15:8] RESET R 01010100 DESCRIPTION Manufacturer ID HIGH value 7.6.19 Device ID Low Table 43. Device ID Low Register 7 6 5 4 3 2 1 0 DEVICE ID[7:0] Table 44. Address 0xFE Device ID Low Field Descriptions BIT FIELD [7:0] TYPE DEVICE ID [7:0] R RESET 11010000 DESCRIPTION Device ID LOW value 7.6.20 Device ID High These registers contain a factory-programmable identification value that identifies this device as a HDC2010. These registers distinguish this device from other devices that are on the same I2C bus. The Device ID for the HDC2010 is 0x07D0 Table 45. Device ID High Register 7 6 5 4 3 DEVICE ID[15:8] 2 1 0 Table 46. Address 0xFF Device ID High Field Descriptions BIT FIELD [7:0] 24 DEVICE ID [15:8] TYPE R RESET 00000111 DESCRIPTION Device ID HIGH value Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information An HVAC system thermostat control is based on environmental sensors and a micro-controller. The microcontroller acquires data from humidity sensors and temperature sensors and controls the heating/cooling system. The collected data are then shown on a display that can be easily controlled by the micro controller. Based on data from the humidity and temperature sensor, the heating/cooling system then maintains the environment at customer-defined preferred conditions. 8.2 Typical Application In a battery-powered HVAC system thermostat, one of the key parameters in the selection of components is the power consumption. The HDC2010, with 550nA of current consumption (average consumption over 1s for RH and Temperature measurements), in conjunction with an MSP430, represents an excellent choice for low power consumption, which extends the battery life. A system block diagram of a battery powered thermostat is shown in Figure 16 Figure 16. Typical Application Schematic HVAC 8.2.1 Design Requirements In order to correctly sense the ambient temperature and humidity, the HDC2010 must be positioned away from heat sources on the PCB. It must not be close to the LCD and battery. Moreover, to minimize any self-heating of the HDC2010 it is recommended to acquire at a maximum sample rate of 1sps (RH + Temp). In home systems, humidity and the temperature monitoring rates of less than 1sps (even 0.5sps or 0.2sps) can be still effective. Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 25 HDC2010 SNAS693 – JULY 2017 www.ti.com Typical Application (continued) 8.2.2 Detailed Design Procedure When a circuit board layout is created from the schematic shown in Figure 16 a small circuit board is possible. The accuracy of a RH and temperature measurement depends on the sensor accuracy and the setup of the sensing system. The HDC2010 samples relative humidity and temperature in its immediate environment, it is therefore important that the local conditions at the sensor match the monitored environment. Use one or more openings in the physical cover of the thermostat to obtain a good airflow even in static conditions. Refer to the layout (Figure 19) for a PCB layout which minimizes the thermal mass of the PCB in the region of the HDC2010, which can improve measurement response time and accuracy. 8.2.3 Application Curves The data shown was acquired with the HDC2010EVM. A humidity chamber was used to control the environment. Figure 17. RH vs. Time 8.3 Do's and Don'ts 8.3.1 Soldering For soldering HDC2010, standard reflow soldering ovens may be used. The sensor is qualified to withstand soldering profile according to IPC/JEDEC J-STD-020 with peak temperatures at 260 °C. Refer to the document SNVA009 for more details on the DSBGA package. In the document refer to DSBGA package with bump size 0.5mm pitch and 0.32mm diameter. Only no clean solder paste may be used when soldering the HDC2010 and no liquid based cleaning or board wash can be used. The HDC2010 must be limited to a single IR reflow and no rework is recommended. Immediately after solder reflow the sensor will generally output a shifted relative humidity. This RH shift will disappear over time as the sensor is exposed to typical indoor ambient conditions (room temperature, 3055%RH). After 1-3 days at ambient conditions the device will return to the specified RH accuracy. 26 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 Do's and Don'ts (continued) 8.3.2 Ambient Exposure, Storage and Handling The HDC2010 has an exposed humidity sensor which needs to be handled with more care than standard semiconductor circuit components. Long exposures to UV light, visible light or high concentration chemical vapors for prolonged periods may shift the RH output and should be avoided. Exposure to high concentrations of out-gassed solvent vapors for long times should be avoided during manufacturing, transport and operation. Package materials which can produce significant out-gassing include: some adhesives (tapes or dispensed), ESD foils, ESD foams, etc. 8.3.3 High Temperature and Humidity Exposure Long exposure outside the recommended operating conditions may temporarily offset the RH output. Table 47 shows the RH offset values that can be expected for exposure to 85 °C and 85 % RH for durations between 12 and 500 hours (continuous). Table 47. Induced RH Offset Due to Extended Exposure to High Humidity and High Temperature (85°C/85% RH) 85°C/85% RH Duration (hours) 12 24 168 500 RH Offset (%) 3 6 12 15 When the sensor is exposed to less severe conditions, Figure 18 shows the typical RH offset at other combinations of temperature and RH. 100 90 ±3% RH (%RH) 80 70 60 50 ±2% 40 30 20 10 ±3% 0 0 10 20 30 40 50 Temperature (°C) 60 70 Figure 18. Relative Humidity Accuracy vs Temperature Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 27 HDC2010 SNAS693 – JULY 2017 www.ti.com 9 Power Supply Recommendations The HDC2010 requires a voltage supply within 1.62 V and 3.6 V. TI recommends a multilayer ceramic bypass X7R capacitor of 0.1µF between the VDD and GND pins. 9.1 Average Current Consumption Calculation HDC2010 average current consumption is function of selected parameters: • Resolution; • Output data rate; Average current consumption takes in account the following specifications: • Current consumption during conversion; • Data conversion duration (RHCTand TEMPCT); • Current consumption in stand-by (IDD-SLEEP) Average current calculation Average current = {[(H_Conv_Time* H_Conv_Cur) + (T_Conv_Time* T_Conve_Corr )]+[(ODR-(T_Conv_Time + T_Conve_Corr ))* Sleep )]}/ODR Example: • Resolution = 11bit for both Humidity and Temperature • Output Data Rate: ODR = 1Hz (1sec = 1000000us) • Humidity conversion time: H_Conv_Time = 400us (for 11 bit resolution) • Temperature conversion time: T_Conv_Time = 350 us (for 11 bit resolution) • Humidity conversion current consumption: H_Conv_Cur = 650uA • Temperature conversion current consumption: T_Conve_Corr = 550uA • Sleep current: Sleep = 0.05uA Average 0.502uA current = {[(400us*650uA)+(350us*550uA)]+[(1000000us-(400us+350us))*0.05uA)]}/1000000us = 10 Layout 10.1 Layout Guidelines The Relative Humidity sensor element is located on the top side of the package. It is recommended to isolate the sensor from the rest of the PCB by eliminating copper layers below the device (GND, VDD) and creating a slot into the PCB around the sensor to enhance thermal isolation. 10.2 Layout Example The only component next to the device is the supply bypass capacitor. Since the relative humidity is dependent on the temperature, the HDC2010 must be positioned away from hot spots present on the board, such as a battery, display or micro-controller. Slots around the device can be used to reduce the thermal mass, for a quicker response for environmental changes. 28 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 Layout Example (continued) Figure 19. Layout Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 29 HDC2010 SNAS693 – JULY 2017 www.ti.com 11 Device and Documentation Support 11.1 Documentation Support 11.1.1 Related Documentation For related documentation see the following: HDC2010EVM User's Guide 11.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 11.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 11.4 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 11.5 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 11.6 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 30 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 HDC2010 www.ti.com SNAS693 – JULY 2017 12 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Product Folder Links: HDC2010 31 PACKAGE OPTION ADDENDUM www.ti.com 23-Jul-2017 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) HDC2010YPAR ACTIVE DSBGA YPA 6 3000 Green (RoHS & no Sb/Br) SAC405 SNAGCU Level-1-260C-UNLIM -40 to 85 L HDC2010YPAT ACTIVE DSBGA YPA 6 250 Green (RoHS & no Sb/Br) SAC405 SNAGCU Level-1-260C-UNLIM -40 to 85 L (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. 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