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About power up sequence of DLPC900

Satoshi
Guru 19645 points
Other Parts Discussed in Thread: DLPC900

Please let me check about power up sequence of DLPC900 below.

①1.15V should supply 1st sequence.

  1.8V and 3.3V is not determined about sequence timing.

②About POSENSE and PWRGOOD, sequence timing is POSENSE→PWRGOOD

　Time of POSENSE:active to PWRGOOD:high is no provision.

Are these correct?

Best regards,

Satoshi

  • 0
    TI__Expert 6370 points
    Hi Satoshi-san,

    I apologize for the delay.

    1) I'm not sure I understand the question exactly. There are no restrictions to the relative ordering of the power supply sequencing to the 1.15V, the 1.8V and the 3.3V as long as the system is held in reset. I recommend that you read section 9.3 of the DLPC900 datasheet which covers power up at length.

    2) Yes, your order is correct, there is a graph of power up voltage in section 6.7 of the DLPC900 datasheet as well as section 9.3, referenced above.

    Let me know if you have any questions on section 9.3.

    Best regards,
    Trevor