• State
  • Locked Locked
  • Replies 0 replies
  • Subscribers 30 subscribers
  • Views 404 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMP 101 low temperature alert

Can Cevikbas
Prodigy 10 points


  Hi,

  I want to use TMP 101 for low temperature sensing; that is to get alert when the temperature is below -40 degrees; below I tired to describe my approach. My problem is I got alert ('1' at alert pin) in room temperature.

   - Set register "01" to 0x10; (Configuration register : - R1R0 :"00" 9 bits resolution, - F1F0: "10" 4 consecutive faults, POL: "0" active low alert, TM:"0" comparator mode, SD:"0" no shutdown)

   - Set register "10" to 0xD500; (TLOW to -43 degrees)

  - Set register "11" to 0xD800; (THIGH to -40 degrees)

  This way I was hoping to get a "1" whenever the temperature isbelow -43 degrees; a "0" if it is above -40;

  However it does not work. I am rechecking if the configuration is correctly done; however in the meantime I want to learn if this approach is OK or there is a better solution.

  Thanks in advance,

  Can