• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 32 subscribers
  • Views 180 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.

SN65DSI85-Q1: Power up requirement of Tvcc

Harry Shin1
Expert 5850 points
Part Number: SN65DSI85-Q1

Hello team,

Could you pls let me know Tvcc requirement for power up sequence??

I understand Ten should be 1ms as table below. but it is for max value. so EN should be high after 1ms of VCC rise??

Thank you.

  • 0
    TI__Genius 13300 points

    Harry,

    The Vcc ramp up to its min. operating voltage needs to happen before the EN signal goes high.

    When the SN65DSI85-Q1 is reset while VCC is high, the EN pin must be held low for at least 10 ms before being asserted high.

    Thanks,

    Zach

  • 0 in reply to Zach Dryer
    TI__Expert 5850 points

    Hello Zach,

    I am clear EN timing requirement but I am sorry that I am not clear yet about VCC ramp up min time.

    What do you mean " its min"?? Could you pls elaborate it more?

    Thank you. 

  • +1 in reply to Harry Shin1
    TI__Genius 13300 points

    Harry,

    No requirement on how fast the ramp up occurs.

    Only requirement is Vcc must be at minimum operating voltage, as shown in the figure you shared above, before the EN signal goes high. The EN pin must be held low for at least 10 ms before being asserted high after Vcc is at its minimum operating voltage.

    Thanks,

    Zach