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TMS320F28374S: VDD pin

Ivy Jin
Expert 6635 points

Part Number: TMS320F28374S
Other Parts Discussed in Thread: TMS320F28075

Hi team,

If the VDD pins are not be used, can these pins be connected to the GND with a 2.2uF capacitor?

Thanks.

Regards,

Ivy

  • +1
    TI__Guru* 84270 points

    Ivy,

    The VDD pins provide the core voltage rail to the device.  They cannot be un-used and must be supplied 1.2V from an external voltage source.

    While there is an on-chip VREG on this device, it is not supported in this configuration and VREGENZ must be tied to VDDIO, and VDD must be supplied externally.

    There is a variant of this family, TMS320F28075, that does support the use of the VREG, in that case the above connection to VDD with 2.2uF cap is correct.

    Best,

    Matthew