SNAU265C june   2021  – july 2023 HDC3020 , HDC3020-Q1 , HDC3021 , HDC3021-Q1 , HDC3022 , HDC3022-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1HDC302x Devices
    1. 1.1 HDC3020 in WSON
    2. 1.2 HDC3021 in WSON
    3. 1.3 HDC3022 in WSON
  5. 2Storage and Handling Guidelines
    1. 2.1 Exposure to Contaminants
    2. 2.2 Chemical Analysis
      1. 2.2.1 Saturation and Recovery Tests
      2. 2.2.2 Long-Term Exposure
    3. 2.3 Packaging and Storing
      1. 2.3.1 Assembly
      2. 2.3.2 Application in Extreme Environment
  6. 3Programming the HDC3020
    1. 3.1 Trigger-On Demand
    2. 3.2 Auto Measurement
    3. 3.3 Programming the CRC
      1. 3.3.1 CRC C Code
    4. 3.4 Condensation Removal
    5. 3.5 Offset Error Correction
      1. 3.5.1 Offset Error Correction Example With a Fingerboard
  7. 4References
  8. 5Revision History

3.2 Auto Measurement

Auto Measurement mode is a continuous operation mode. The user can select the measurement frequency between 10 samples a second to 1 sample every 2 seconds.

To configure the device to collect both the humidity and temperature data in continuous mode, select the desired Auto Measurement mode and low power mode duration from the command table. To obtain the temperature and humidity values, the user can issue commands 0x0E & 0x00. After placing the device into the auto measurement mode desired (Table 8-3 in theHDC3020 data sheet), the user should issue command code 0xE0 0x00 at coinciding time intervals to read out the temperature and relative humidity measurement values.

GUID-EC9FE5F3-A1A2-4C74-9A0C-4F70AA633962-low.svgFigure 3-2 Flowchart for Auto Measurement Mode.