The HTU21D peripheral module provides the necessary hardware to interface the HTU21D digital relative humidity and temperature sensor to any system that utilizes a Digilent Pmod™ compatible expansion ports configurable for I2C communication.
The HTU21D sensor is a self-contained humidity and temperature sensor that is fully calibrated during manufacturing. The sensor can operate from 1.5V to 3.6V, has selectable resolution, low battery detection, and checksum capability. The HTU21D has a low current stand-by mode for power-sensitive applications.
Measures relative humidity from 0% to 100%
Measures temperature from -40°C to 125°C
Humidity resolution selectable from 8 to 12 bits
Temperature resolution selectable from 11 to 14 bits
0.14 µA sleep current
500 µA operating current (during measurement only)
Covers full humidity range of 0 to 100% RH
Broad temperature range of -40°C to 125°C
Use output data to calculate absolute humidity and dew point
Quick recovery from condensation: 10 seconds
Fast response time to humidity changes: 5 seconds typical
Fully calibrated and interchangeable
Recovers fully from condensation
Fast digital conversion time: 14 mS typical
12-pin connector compatible with Digilent Pmod™
Secondary 12-pin connector allows daisy chain
FPGA bare metal drivers available for download
µC C code drivers available for download
Built-in heater to remove condensation
Available with PTFE environmental filter over the sensor
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