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Original question:

CCS/TPS65835: TPS65835EVM-705 MSP430: Error connecting to the target: Security Fuse has been blown

CCS/TPS65835: TPS65835 can update programs with BSL？

peter qian
Prodigy 80 points
Part Number: TPS65835
Other Parts Discussed in Thread: MSP430G2553

Tool/software: Code Composer Studio

TPS65835 can update  programs with BSL？

  • 0
    TI__Mastermind 30280 points

    According to the MSP430™ Flash Devices Bootloader (BSL) User's Guide, BSL pins named nRST and TEST.

    On the TPS65835, pin 17 is nRST (Reset) and pin 20 is TEST. They both say "Spy-Bi-Wire test input during programming and test" so it seems logical to me that this integrated MSP430 device would support BSL programming.

  • 0
    TI__Guru 54716 points

    The MSPBSL can program the MSP430G2553 so there should be no issue with the TPS65835.  Per the earlier threads, I think there is a disconnect in the tool chain.   Specifically, the associated linker command and header files for the TPS65835 are no longer a part of the CCS device packages.  This in combination with an old FET and CCS might be the reason why the device appears to have a fuse blown.  The fuse may be blown, but it is more likely that your tool chain is not compatible with device.

    I would recommend obtaining the latest FET, using the latest CCS, and finally updating all of your code and projects to use the generic MSP430G2553 support files.  

    Regards,

    Chris