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MSP430G2444: Debugging at 1V8

Victor Diaz
Prodigy 20 points
Part Number: MSP430G2444


Hello,

According to the datasheet this part is capable of working down to 1V8. I have tried to debug it at this voltage by changing the debugging properties on CCS10:

Project properties/Debug/MSP430Flash Settings

To 1V8, but there is a load error when doing that.

At the default 3V3 it works fine, and all the way down to 2V2 it works, if I put voltages lower than that, it doesn't work.

In order to get the same result I have tried as well, using MSP-FET430UIF, using the VCC_sense option, and supplying an external voltage of 1V8, same error.

Please advice, as the device is in a board with other uP with absolute maximum rating 1V9, so now I can't program it or debug it.

Best regards,

  • 0
    TI__Mastermind 49692 points

    Hi Victor,

    Please check that your code is configuring the clocks (e.g. frequency) properly for your supply voltage of 1.8V. The frequency range depends on the supply voltage. This should be mentioned in the datasheet and/or user's guide.

    Regards,

    James

  • 0 in reply to James Evans
    Guru 34693 points

    James Evans said:

    Hi Victor,

    Please check that your code is configuring the clocks (e.g. frequency) properly for your supply voltage of 1.8V. The frequency range depends on the supply voltage. This should be mentioned in the datasheet and/or user's guide.

    Regards,

    James

    As I understood, he can't download code at 1.8V.
    And reason for this is that 2xx flash family can work down to 1.8V, but for flash erase / write operation (from FET or device itself) minimum voltage is 2.2V. It is noted in part datasheet, Recommended Operating Conditions table.
  • 0 in reply to zrno soli
    Prodigy 20 points

    Thank you Zrno, it's that.

    BR,

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