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AM2634-Q1: AM2634COKFHMZCZRQ1 Power-on timing question

zhixia bai
Prodigy 100 points
Part Number: AM2634-Q1

Hi,teams

I would like to ask about the AM2634COKFHMZCZRQ1 and F2800157QPNRQ1 chips. Currently, both chips are powered by dual 3.3V and 1.2V power supplies. Are there any requirements for the power-on timing of these two power supplies? For example, power on at 3.3V first and then at 1.2V. In the development board data manual of AM2634COKFHMZCZRQ1, there is a diagram as follows. Do you necessarily need to follow this power-on sequence to work? What if you don't follow it? Will it not work?

Thanks，

Zhixia Bai

  • 0
    TI__Guru*** 134695 points

    Hello Zhixia,

    zhixia bai said:
    In the development board data manual of AM2634COKFHMZCZRQ1, there is a diagram as follows. Do you necessarily need to follow this power-on sequence to work? What if you don't follow it? Will it not work?

    Yes this sequence is required and if it is not followed the device will not properly start up and it will not be functional.

    Best Regards,

    Ralph Jacobi