SNAS678C May 2018 – July 2021 HDC2080
After power up, the HDC2080 defaults to Sleep Mode and waits for an I2C instruction to set programmable conversion times, trigger a measurement or conversion, or read or write valid data. When a measurement is triggered, the HDC2080 switches to Measurement Mode that converts temperature or humidity values from integrated sensors through an internal ADC and stores the information in their respective data registers. The DRDY/INT pin can be monitored to verify if data is ready after measurement conversion. The DRDY/INT pin polarity and interrupt mode are set according to the configuration of the Interrupt Enable and DRDY/INT Configuration registers. After completing the conversion, the HDC2080 returns to Sleep Mode.