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MSP430FR2476: Fails everything

ARES ARES
Prodigy 250 points

Part Number: MSP430FR2476
Other Parts Discussed in Thread: MSP430F5438A,


Hello,

We have been using the uC MSP430F5438A for years. Now we want to use a
microcontroller from the MSP430FR family (MSP430FR2476) in our equipment and
we find the following:

1-We mount the uC in a test circuit, we load some test sentences (alternating
levels in I/O), and the uC works well.

2-After this, we load some sentences to read some values by I2C and it does it
correctly the first time. When we want to repeat it once more, then the uC no
longer responds.

3-We reload the sentences of point 1 and the uC no longer works.

We reprogrammed it many times (successfully) but we can't get it to work
again.

What could be the problem??


Thank you.

Regards.

Ares Electronica Industrial S.A
www.ares.com.ar
Gral. Las Heras 3784, Villa Martelli. Argentina.
+549011476060

  • 0
    TI__Mastermind 30505 points

    Hello,

    If I'm understanding correctly, you can communicate with the MCU via JTAG and program it successfully, but can't get it to toggle the GPIOs? 

    How simple is the first test program?  Can you try a very basic GPIO toggle example?

    How many devices are you working with?  Is it only one? 

    Thanks,

    JD  

  • 0 in reply to JD Crutchfield
    Prodigy 250 points

    Hi, 

    Thanks for the answer.

    I use the very basic example, like that.

    I'm connected by SBW and FET430UI debugger tool.

    The MSP is the unique working with a pressure sensor.

    Regards,

    Franco

  • 0 in reply to JD Crutchfield
    Prodigy 250 points

    Hi JD Crutchfield,

    We have redesigned our PCB to increase the dissipation PAD.
    The uC worked longer (1 minute) but after that it stopped working.
    My question is: Is it possible that the uC was damaged by temperature but still allows it to be reprogrammed without problems?

    Thank you.

    Regards.

    Ares Electronica Industrial S.A
    www.ares.com.ar
    Gral. Las Heras 3784, Villa Martelli. Argentina.
    +549011476060

  • 0 in reply to ARES ARES
    TI__Mastermind 30505 points

    Hey Ares,

    Sorry for missing this reply.  Yes, it is possible that the IC can be damaged by temperature and have unexpected performance/behavior.  Were you performing very high temperature testing?  The MSP430 doesn't usually consume enough power to heat itself. 

    At this point, have you replaced the IC completely?  Did the issue go away? 

    Thanks,

    JD  

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