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Question about TMS320F280F28062F

Jordda
Intellectual 665 points

Other Parts Discussed in Thread: TMS320F28062F, TMS320F28062

Hi,

I'm trying 80-pin TMS320F280F28062F, but not make sure some pins' usage. The following is my question.

(1) Just like to make sure one thing.... TMS320F280F28062 and TMS320F280F28062F has almost the same function. The only difference between them is that TMS320F280F28062F provides FOC algorithm embedded into its ROM for usage. Is it true?

(2) Can I operate this MCU without X1(pin-48) and X2(pin-47)? If yes, should I have X1 tied to Ground and X2 float?

(3) If I do not use the internal VREG for MCU, do I have to keep all VDDIO pins unconnected? and have VREGNZ pull high?

Thanks!

  • 0
    Guru 192875 points

    Hi Jackson,

    First of all, there's no controller named TMS320F280F28062F, its TMS320F28062F and TMS320F28062. 

    1. The answer is "TRUE"

    2. Yes, according to the control stick schematics X1 is grounded and X2 is floating

    3. Disabling the On-chip VREG

    To conserve power, it is also possible to disable the on-chip VREG and supply the core logic voltage to
    the VDD pins with a more efficient external regulator. To enable this option, the VREGENZ pin must be tied
    high.

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    TI__Guru** 119680 points

    1. True AND note that the other ROM tables (IQMath, math functions, etc.) are in a different memory location. Pin-pin compatible, but you will need to make some changes to your linker files if you are trying to run a project that operates on F28062 on F28062F.  Make sure you review the memory sections of the TRM and UG.