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CC430F6135

Other Parts Discussed in Thread: CC430F6135, CC430F6137

Dear,

I have some problem when i programming CC430F6135. The microcontroller is programmed only once. After that, i can't read or programming flash. 

I have no problem with CC430F6137. I use MSP-FET430UIF programmer-debugger

Best regards.

  • THis may happen if your uploaded code causes the MSP to imemdiately crash. This will break teh JTAG connection before the FET can attach.  You may try rasing the flash with the elprotronic software (which is a bit faster than CCS) or attach to the bootstrap loader (which is definitely executed before the offending user code can cause a reset)

  • But the same code work perfectly on CC430F6137 . So what is different with CC430F6135 on JTAG bus connection ?

  • Dominique Gyselinck said:
    But the same code work perfectly on CC430F6137 . So what is different with CC430F6135 on JTAG bus connection ?

    The JTAG shouldn't be different. But the 6135 ahs only have of the flash the 6137 has, and - more importantly - half of its ram.

    I don't knwo your code, but it may cause a stack overflow due to local variables or such, which won't happen on the twice as large ram of the other.

    Just a guess.

  • No, my program works perfectly on CC430F6135 but i can programming only once.

    If i put a CC430F6137 on the same board, i have no problem for programming this component every time.

    We think that the JTAG bus on the CC430F6135 is defect.

    What do you think ?

  • Dominique Gyselinck said:
    No, my program works perfectly on CC430F6135 but i can programming only once.

    You mean, you program a fresh 6135 and it works as expected, but cannot be reprogrammed, while an 6137 works as well and can be reprogrammed?

    This is weird. I cannot think of a reason why JTAG should fail after programming on one but not the other.

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