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[FAQ] AM62A7-Q1: how to connect the pin net VDDSHV4, VDDSHV5, and VDDSHV6 if SD card is not used

pengfei Zeng
Prodigy 40 points
Part Number: AM62A7-Q1
Other Parts Discussed in Thread: AM62P, AM62L

SD cards is not need in our project using AM62A7-Q1.  if SD card is not used,  how to connect the pin net VDDSHV4, VDDSHV5, and VDDSHV6 of AM62A7-Q1?  leave it open or connected directly to VSS or ? 

  • 0
    TI__Guru 63175 points

    There is a note in the datasheet that says, "All power pins must be supplied with the voltages specified in Section 7.4, Recommended Operating Conditions, unless otherwise specified."  This includes the VDDSHV4, VDDSHV5, and VDDSHV6 power rails.  In your case, these power rails should be connected to one of the other fixed 1.8V or 3.3V IO power sources, where they are sequenced on/off as required for the associated power rail(s).

    Supported DSIO IO supply for IO group

    AM62x, AM62A

    VDDSHV4, VDDSHV5, VDDSHV6

    AM62P

    VDDSHV5, VDDSHV6

    AM62L

    VDDSHV2, VDDSHV3, VDDSHV4

    AM64x

    VDDSHV5

    Regards,
    Paul