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AM3357: Power supply

Part Number: AM3357

Hi Team,

Please confirm the following about the power supply of AM335x.

1.IF Power-Supply Sequencing With RTC Feature Disabled,
    What are the timing regulations for each power supply?

2. What happens to the AM335x if the I/O power supply fails?
    A) Does it not work?
    B) Only some signals work?

Thanks & Best Regards,
Taishi

  • Hi,

    Taishi Ando said:
    1.IF Power-Supply Sequencing With RTC Feature Disabled, what are the timing regulations for each power supply?

    There are no timing requirements for power supply sequencing.

    Taishi Ando said:
    2. What happens to the AM335x if the I/O power supply fails?
        A) Does it not work?
        B) Only some signals work?

    This will depend on whether the AM335x device has come out of reset. Normally, if a recommended PMIC is used, the PORZ signal will not be deasserted if one or more of the PMIC regulators fail.