• State Resolved
  • Locked Locked
  • Replies 7 replies
  • Answers 3 answers
  • Subscribers 32 subscribers
  • Views 507 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

32-bit microcontroller selection

Rekha K
Intellectual 330 points
Other Parts Discussed in Thread: TMS320F28379D

Hello,

I want help regarding selection of a microcontroller. Currently I am using TMS320f28379d.I want to change it because of my memory requirement.My requirement is only maximum 90KB of Flash and around 60KB of RAM.Can someone help me with this.A 32-bit microcontroller is also under consideration.

Thanks in advance.

  • 0
    TI__Guru 57255 points

    Hi Rekha,

    I would recommend considering the F28004x family.  It is close to what you are specifying, but gives a little overhead.  Perhaps something like the F280041?
    https://www.ti.com/product/TMS320F280049


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    Intellectual 330 points

    Hello,

    Thank you for the selection. But I have more criterion. What my application is an implantable medical device. So I am looking for processors of least size. 

    When I checked the least size available for various processors are 7x7mm. Can I get even smaller processor.

    Thanks in advance.

  • 0 in reply to Rekha K
    TI__Guru 57255 points

    Hi Rekha,

    That 56pin QFN is the smallest physical package we offer within the C2000 product line at this time.  We are looking into smaller packages in the future, but this would only affect you years from now.

    TI does offer the MSP430 & Arm-based MCUs. I am not aware whether they have a physically smaller package option either though -and  it didn't appear so after a quick search. You could ask those forums, if you feel they might meet your other criteria.


    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    Intellectual 330 points

    Hello,

    Yes QFN is the smallest package available.

    Further, can you help me with selection of a least power IC.

    Thanks in advance.

  • 0 in reply to Rekha K
    TI__Guru 57255 points

    HI Rekha,

    For C2000, the F28004x using the internal DC/DC will actually be one of the lower cost & space conscious options.  Other things to do include turning off unused clocks or potentially running the device at a lower frequency.

    The F28004x device actually has a power estimator, if you'd like to review.  Remember it is just an estimator though:
    https://www.ti.com/tool/C2000-F28004X-POWER-EST-CALC


    The MSP43x will be a much lower power solution if that's desired.  If you think that is viable, I'd recommend posting to their forum so that you can get better information from the direct experts supporting that device.


    Hopefully this helps!



    Thank you,
    Brett

  • 0 in reply to Brett Larimore
    Intellectual 330 points

    Thank you Brett, for the estimator. 

    Just one more help regarding this. I tried to find a similar estimator for TMS320F28379D which I am currently using. I couldn get any . Can you help .

    Thanks in advance.

  • 0 in reply to Rekha K
    TI__Guru 57255 points

    Hi Rekha,

    Unfortunately, we don't have an power consumption estimator tool for the F2837x series.  For the F28004x, with various methods of generating VDD, we felt it was necessary - however, the specific approach taken didn't scale very well.

    I'll make note, to the team supporting the tool, that you had interest.

    You can utilize guidance from the Power Consumption Summary section of the device's datasheet to get a good idea - and an estimation of what would happen if you turn off peripheral clocks.

    Best of luck for your project!



    Thank you,
    Brett