• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 166 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TMP75: Judgment criteria for TMP sensor disconnect

Feng bin Su
Expert 7540 points
Part Number: TMP75
Other Parts Discussed in Thread: TMP1075

Hi team,

My customer is using our TMP75.

They would like to know whether their FW can use NAK to be the TMP sensor disconnect judgment criteria.

If not, do you have suggested function for it? Thanks.

  • 0
    TI__Mastermind 27555 points

    Hi Feng Bin Su,

    Thank you for your post. 

    This should work provided the rest of their setup is correct. There are other reasons that the TMP75 may NAK a byte, such as bad I2C timing or voltage levels, but these wont be a problem on a well designed system.

    Assuming everything else is working, sending an address byte and checking for a NAK is a good way to see if the TMP75 is still connected.

    You may also want to have them take a look at the TMP1075, this a newer version of the TMP75 that is pin-to-pin and software compatible. 

    Best Regards,
    Brandon Fisher