DS90UB925Q-Q1: Power Up Requirements

K.Yaita

Part Number: DS90UB925Q-Q1

Hi Team,

The datasheet shows the VDD33 and VDDIO supply ramp should be faster than 1.5ms with a monotonic rise.
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(datasheet page 41)

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What is concern if VDD33 and VDDIO supply ramp is slower than 1.5ms?
(What is occured if VDD33 and VDDIO supply ramp is slower than 1.5ms?)

Best Regards,
Yaita / Japan disty

over 7 years ago

0 Liam Keese over 7 years ago

TI__Genius 12705 points

Hello,
Supply ramp faster than 1.5ms is not a hard requirement. If the ramp is slower, please ensure the PDB does not go high before supplies are stable.

0 K.Yaita over 7 years ago in reply to Liam Keese

Guru 29720 points

Hi Liam-san,

Thank you for your reply.

Is supply ramp slower than 1.5ms applicable as long as PDB go high after supplies are stable?
I would like to confirm just in case.

Best Regards,
Yaita

0 Liam Keese over 7 years ago in reply to K.Yaita

TI__Genius 12705 points

correct

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DS90UB925Q-Q1: Power Up Requirements