• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 185 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.

DS90UB928Q-Q1: VPDB power up sequence

Xin Wang
Prodigy 190 points
Part Number: DS90UB928Q-Q1


Hi TI team,

About “DS90UB928QSQX”

The power-up sequencing requirements in the manual are as follows：note：VPDB must not exceed limit for respective I/O voltage before 90% voltage of VDD33。What is the voltage of VDD33 here? Is it the voltage at which the chip starts working? Or is it the maximum and minimum value of VDD33?

  • 0
    TI__Mastermind 37865 points

    Hi Xin,

    For that specific requirement, VDD33 was specified at 3.3v ± 10%. That indicates that the lowest voltage of VDD33 is 3.0v. PDB voltage should not exceed 0.8v before VDD33 reaches 90% of 3.0v, which is 2.7v.

    3.3v ± 10% is the min and max for VDD33.

    Best,

    Jack