AM3352: Time stipulations for Power Supplies Sequence

O.H

Part Number: AM3352

Hi experts,

Please let me check on the Power Supplies Sequence for AM335x.
we are refering to the data sheet(SPRS717L) "Figure 6-2. Preferred Power-Supply Sequencing With Dual-Voltage I/Os Configured as 3.3 V".

Are there any time stipulations(or limits) for each of t1, t2, t3, and t4 in the figure below?
Example 1: The period of t1 must stand up by xms~yms
Example 2: The total time of t1~t4 must be xms~yms
etc.

Best regards,
O.H

over 2 years ago

+1 Kallikuppa Sreenivasa over 2 years ago

TI__Guru**** 195089 points

Hello O.H,

Thank you for the query.

The important consideration is following the sequence and Power Supply Slew Rate Requirement.

The supply rails connect to different internal IP blocks that are powered as the supply ramps.

Although there is no specified time, it would be recommended to have time that allows the power supply to become stable and also allow time for the internal circuit to setup and complete the configuration.

Regards,

Sreenivasa

0 O.H over 2 years ago in reply to Kallikuppa Sreenivasa

Mastermind 6430 points

Hello Sreenivasa,

Sorry for rate reply.

Thank you for your support. I understood.

Best regards,
O.H

0 Kallikuppa Sreenivasa over 2 years ago in reply to O.H

TI__Guru**** 195089 points

Hello O.H,

No worries and thank you for the reply.

You have a great day.

Regards,

Sreenivasa

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AM3352: Time stipulations for Power Supplies Sequence