DP83867IS: questions about T1

Kazuhiko Hirano

Part Number: DP83867IS

Hello,

At my customer design, RSET_N is held Low after VDD power up for 90 – 110ms.
In this case, T1(NOM) is 200ms or 195us?
How much is T1(MAX)? (They would like to know exact wait time for their host.)

Best regards,

K.Hirano

over 4 years ago

0 Adrian Kam over 4 years ago

TI__Expert 5425 points

Hi Hirano-san,

Since you are talking about the power-up sequence, T1(NOM) would be 200ms, which is the timing spec in section 7.6 (Power-Up Timing). There is no T1(MAX). As long as, in your system, T1 is at least 200ms, it should be good.

Regards,

Adrian Kam

0 Kazuhiko Hirano over 4 years ago in reply to Adrian Kam

TI__Genius 15038 points

Adrian,

I see, thanks a lot!

Best regards,
K.Hirano

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DP83867IS: questions about T1