DPP301A000 TE Connectivity

MEAS HTU21D XPLAINED PRO BOARD Digital Humidity Digital Component Sensor (DCS) Development Tools The HTU21D Xplained Pro provides the necessary hardware to interface the HTU21D digital relative humidity and temperature sensor to any system that utilizes Xplained Pro compatible expansion ports Performance 2 configurable for I C communication. The HTU21D sensor is a self- 0% to 100% relative humidity range contained humidity and temperature sensor that is fully calibrated -40C to 125C temperature range during manufacture. The sensor can operate from 1.5V to 3.6V, has Very low power consumption selectable resolution, low battery detect, and checksum capability. The HTU21D has a low power stand-by mode for power-sensitive Operates from 1.5V to 3.6V applications. Fast response time 5 seconds typical Built-in heater for fast recovery from saturation Refer to the HTU21D datasheet for detailed information regarding operation of the IC: Recovers fully from condensation Fast conversion time 14ms typical MEAS HTU21D XPLAINED PRO BOARD Digital Humidity DCS Development Tools 2 Connector Pin Assignments (I C Communications) System Plug Connector JP1 Pin No. Signal Description Pin No. Signal Description 1 ID Hardware identification 11 SDA TWI Serial Data 2 GND Ground 12 SCL TWI Serial Clock 3 N/C Not Connected 13 N/C Not Connected 4 N/C Not Connected 14 N/C Not Connected 5 N/C Not Connected 15 N/C Not Connected 6 N/C Not Connected 16 N/C Not Connected 7 N/C Not Connected 17 N/C Not Connected 8 N/C Not Connected 18 N/C Not Connected 9 N/C Not Connected 19 GND Ground 10 N/C Not Connected 20 Vdd Power Supply Dimensions (mm) Detailed Description 2 I C Interface 2 The peripheral module can interface to the host being plugged directly into an Xplained Pro extension port (configured for I C) through connector JP1. External Control Signals 2 2 The IC operates as an I C slave using the standard 2 wire I C connection scheme. The IC is controlled either by the host (through the Xplained Pro connector). In cases where one or more of the SCL and SDA signals are driven from an external source, 10k resistors R1, R2 provide pull-up. However, this also increases the apparent load to the external driving source. If the external source is not capable of driving these loads (10k), they should be removed. Reference Materials The complete software kit is available for download at: Link to HTU21D CPROJ.zip SENSOR SOLUTIONS /// MEAS HTU21D XPLAINED PRO BOARD 062017 Page 2