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msp430f5524 firmare usb bootloading kills MCU .

Thomas Pfenning
Prodigy 10 points
Other Parts Discussed in Thread: MSP430F5522, MSP430F5524

We have a mature product using the msp430f5522.  We need the extra memory of the msp430f5524.   On two devices we installed the msp430f5524 and loading

the existing firmware using the usb boot loader.  The loading completed ok, but after that the MCU appears dead. When the jtag is used to try and communicate

we just get a "load failure".  I made a firmware version with msp430f5524 as target but I think I need to now replace the MCU as the flashing with firmware targeting

the msp430f5522 did permanent damage.  Is this possible ?

  • 0
    Guru 243110 points

    The 5524 has half the amount of SRAM, so the firmware tries to initialize the stack to an invalid address.
    (If you actually need that much SRAM, use the 5528.)

    Forcing the BSL to run with the PUR pin should still work, unless you've also replaced the BSL. Reflashing through JTAG also should work.

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