• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 33 subscribers
  • Views 1993 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.

What are the differences among TM4C129 parts? What do the part suffixes mean?

Oliver Douglas69
Intellectual 320 points
Other Parts Discussed in Thread: TM4C1294NCPDT, TM4C1292NCPDT

This product comparison lists 8 different TM4C129 microcontrollers. I see that some of the parts have 512 kB of flash instead of 1 MB. And a few of the parts have larger operating temperature ranges.

But in other cases, the specifications provided are identical. No differences are listed between the TM4C1294NCPDT and TM4C1292NCPDT. And yet the former is about $2 more expensive than the latter on DigiKey. Can anyone explain what the real difference is, and what the part suffixes indicate?

  • 0
    Guru 13040 points
    Between these two, one has PHY integrated to the ethernet, and the other needs an external solution for that...
    Of course this should be more of a TI answer, but over the years I have not been able to "detect" a meaning for each letter...
  • 0
    Guru 117855 points
    In the past - deep (very deep/far back) w/in the MCU manual - such descriptions appeared. (that method still holds - w/other vendors' ARM MCUs) Pity if that clarity has been killed...
  • 0
    Guru 92251 points

    Oliver Douglas69 said:
    No differences are listed between the TM4C1294NCPDT and TM4C1292NCPDT. And yet the former is about $2 more expensive than the latter on DigiKey. Can anyone explain what the real difference is, and what the part suffixes indicate?

    I haven't seen a complete table of what the part suffixes indicate, or the "Series identifier" as it is called in the Key to Part Numbers table in the datasheets.

    However, since TivaWare has one include file per device listing the available peripheral registers you can compare include files for devices to find the differences. E.g. comparing tm4c1292ncpdt.h and tm4c1294ncpdt.h shows that the TM4C1294NCPDT has a Ethernet PHY but the TM4C1292NCPDT doesn't:

  • 0 in reply to Chester Gillon
    Guru 10570 points

    Chester Gillon said:
    I haven't seen a complete table of what the part suffixes indicate, or the "Series identifier" as it is called in the Key to Part Numbers table in the datasheets.

    They wouldn't necessarily have significance in any case. The lack of a magic decoding table may simply be because there is no encoding to begin with.

    Chester Gillon said:
    However, since TivaWare has one include file per device listing the available peripheral registers you can compare include files for devices to find the differences. E.g. comparing tm4c1292ncpdt.h and tm4c1294ncpdt.h shows that the TM4C1294NCPDT has a Ethernet PHY but the TM4C1292NCPDT doesn't:

    This difference has been, apparently, too highly obscured to help people. I can understand if something is not in the selectable features, even if I would expect on-board PHY to be something that makes sense there, but it should be in the catch-all 'other' column. You shouldn't have to spend so much time tracking down the differences.

    Robert

  • 0 in reply to Robert Adsett72
    Guru 13040 points

    A more recent thread reminded me of this one, and yet, included this table which explains (part of) what a P/N suffix means. Still useful in case someone stumbles upon this particular post again.