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MSP430F5437A: try to run the same source code on revision H and F, but failed on revision F

Hyungjae Cho
Prodigy 210 points
Part Number: MSP430F5437A
Other Parts Discussed in Thread: MSP430F5437

I'm going to investigate the issue with power-up on the revision F of MSP430F5437A.  We have used  revision H of MSP430F5437A for more than 10 years and are going to switch it to the revision F of MSP430F5437A because of material shortages. But we found the device couldn't power up correctly in factory sometimes when we programed the same SW to revision F. I heard putting some delays around  the time to enable watchdog worked but we still have the problem. I got the data sheet for revision H. There are some numbers for clock and timing in active/standby/wake-up. Could you advise me what I can consider when we switch one to the other when I want to have the same SW image for the compatibilities.  I'm going to upload if I get the defacted devices in my hands or more information. Thank you in advance.

  • 0
    TI__Genius 16070 points

    Hi Hyungjae,

    Generally speaking the only differences between revisions of the device are the errata that apply. Typically later revisions (later in the alphabet) will have some errata resolved. You can review the errata sheet here: MSP430F5437A Device Erratasheet (Rev. AC)

  • 0 in reply to Dylan OBrien
    Guru 25195 points

    I must be missing something here.  The Rev F and H are for the data sheet and not the part. The Rev H data sheet for this device has a useless revision history showing only the change from Rev G.

    Looking at a data sheet I have for the G2553 I see a history from the original up to Rev. J. Much more useful. Lots of edits to the document but nothing even suggesting that there were changes to the silicon.

    Looking at the errata I do find some information on silicon changes to the G2553. Showing die revisions of A, B, and C and how parts are marked. How those die revisions correspond to changes in the data sheet is left unexplained.

    The F5437A seems to be lucky in having the data sheet revision match the number of die revisions. How or even if they correspond to each other is a mystery.

  • 0 in reply to Dylan OBrien
    Prodigy 210 points

    Thank you for your information Dylan. My colleague and I will review the information.

  • 0 in reply to David Schultz
    Prodigy 210 points

    Thank you for your comments, David. It would confuse you if  I mixed up some information while talking about revision number. I just wanted to talk about the part. Rev F and H litterally appear on the package. I heard Rev F works with IAR 7.x. Previously we compiled with Rev H on IAR 5.3. Let me ask my colleagues follow up if any.

  • 0 in reply to Hyungjae Cho
    TI__Genius 16070 points

    Hi David,

    While I can't speak to why the revision history for the MSP430F5437 datasheet is so empty, I can explain that device revisions don't correspond to datasheet revisions. A datasheet can be updated for reasons other than a silicon change, and it may not be updated if there is a silicon change.

    The errata document is the one that should always change with a silicon revision. The silicon would only be revised to fix some known issue, which should all be listed in the errata. So after a silicon revision, there would be an errata revision to show which issues have been fixed in the newest silicon version.

    Hi Hyungjae,

    Please let me know if you have further problems and feel free to create a new thread if you have a new issue.

  • 0 in reply to Dylan OBrien
    Prodigy 210 points

    Thank you for your comments and supports, Dylan. Your information is very helpful to understand the logics of silical changes and datasheet. I'm kinda new on this microcontroller and am waiting for getting the defected devices. I reviewed  the errata sheet for MSP430F5437A you shared, but couldn't find any difference between rev. F and rev. H.  Obviously some of the differences between two make the problem. I can't access the information in detail for now.  I'd like to find the rootcause first. Let me update or will ask my collegues create a new thread if they can provice more information.  

  • +1 in reply to Hyungjae Cho
    TI__Genius 16070 points

    Good point, reading back through that table it does look like all of the errata are the same between Rev. F and H. Yes a new thread with additional information would be helpful. Some notes like the hardware set-up, device revisions, and details about the software will all be helpful. Thanks

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