• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 62 subscribers
  • Views 285 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.

Original question:

TPS56520: I2C Timing Requirement

TPS56520: I2C Timing Requirement

Koshi Ninomiya
Expert 4105 points
Part Number: TPS56520

Hi Team,

When I look at the 7.6 Timing Requirements of datasheet of TPS56520, tHD;DAT (Data Hold Time) says that Min=50ns and Max=900ns.

But when I look at the tHD;DAT specification of I2CBus user manual from NXP (Philips), it says that Min=0ns and Max=No Limit.

Q-1: Why does the datasheet of TPS56520 have the Max limit of tHD:DATA (Data Hold Time)?

Q-2: What is the reason of that?

Q-3: Can we expand the Max limit of tHD:DATA of TPS56520?

Thank you.

Best Regards,

Koshi Ninomiya

  • 0
    TI__Genius 15135 points

    Hi, Koshi

    For Q1 and Q2,

    TPS56520 can support fast-mode plus, the max CLK frequency is 1MHz, the period will be 1000nSec, in one period, we should leave time for other parameter, tr, tf, tSU;DAT and so on, so TI set 900nSec MAX limit, I think this make sense.

     

    For Q3,

    When using standard mode(100kHz) and fast mode(400kHz), we can expand the 900nS max limit.