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HDC1080: Reading after conversion returns always NAK.

Part Number: HDC1080

Hi,

I have got some problems with getting some temperature and humidity information out of the IC. I followed the datasheet and did the following:

Configuration of the device

  • MODE: Temp and Humidity
  • TRES 16bit
  • HRES 8bit
  • No heating

As far as I understood the communication, the IC expects the MSB first than the LSB. The trace below shows the initiation sequence and acknowledges everything.

I

However, if I try to read (here after 50ms), the IC returns me a NAK.

The IC returns ManufacturerID and DeviceID correctly. So, I am sure I communicate with the right device.

I would appreciate some tips on what I am doing wrong here.