• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 81 subscribers
  • Views 169 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.

TMS320F28020: What is the voltage requirement for triggering a falling edge external interrupt

Xiaoming Wang
Intellectual 490 points
Part Number: TMS320F28020

What is the range for V high and V low and fall time to correctly trigger an interrupt XINT?

  • 0
    TI__Genius 17315 points
    Xiaoming,

    For the device operating at 3.3 V, the high-level input voltage is a minimum of 2 V, and the low-level input voltage is 0.8 V maximum.

    Please see the data sheet at:

    www.ti.com/lit/sprs523

    I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

    - Ken
  • 0 in reply to Ken Schachter
    TI__Genius 17315 points
    Xiaoming,

    Also, please see the data sheet page 70 for the external interrupt timing requirements.

    I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

    - Ken
  • 0 in reply to Ken Schachter
    TI__Genius 17315 points
    Xiaoming,

    It's been a while since I have heard from you last. Therefore, I am assuming that my last reply resolve your issue. If this isn’t the case, please reject this resolution or reply to this thread. If this thread locks, please make a new thread describing the current status of your issue. Thank you.

    - Ken