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Original question:

BQ76952EVM: Breaking then replacing the MPS430 MCU

BQ76952EVM: Addendum to repairing U11 on the EVM

Harry McNally
Intellectual 440 points
Part Number: BQ76952EVM

Further information for anyone that has to recover from a failed U11 and also related to this thread:
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/985423/bq76952evm-programming-u11-of-bq76952evm

At this time I was unable to find stock of the MCU so my solution was to buy the LaunchPad for the MCU from the TI store and (with some https://www.chipquik.com/store/index.php?cPath=200) I was able to move the MCU off the LaunchPad and across onto the EVM.

Because the MCU had code for the LaunchPad, the Updater would not recognise it; even with the -s option. I read that the MCU has a pin to force it into the USB BSL firmware and, sure enough, the EVM designers had bought this out to J27. Installed link, repowered and ran Updater, removed link and repowered and the EVM was running again.

So this is a way to get the EVM repaired and may be useful in these "interesting times".

Harry

  • 0
    TI__Guru* 81034 points

    Hi Harry,

    I'm glad you found a solution to this! It is true, the MCU for this board is very hard to find these days. We have been having trouble finding parts to build more EVMs!

    Thanks for sharing the details! Hopefully this will help others.

    Matt