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MSP430FR5869: MSP430FR5x Flashing F/W voltage

Kz777
Expert 7895 points
Part Number: MSP430FR5869
Other Parts Discussed in Thread: MSP-FET, MSP-FLASHER

Hi Champs,

We would like to flash F/W with VCC=2.0V for FR5x.

Because, their connected module have to keep VCC=2.0V. Do you have any minimum voltage and current for FRAM device flash ?

Regards,

Kz777

  • 0
    TI__Guru**** 218217 points
    Hi Kz777,

    The minimum voltage is determined by the maximum SVSH power-up level, which is 1.99 V for this device (Table 5-2 of the datasheet). Active mode current consumption can be ~1 mA at 8 MHz in some use cases (please see Section 5.4 and Table 6-1) but I would recommend that the power supply be capable of supplying at least 100 mA, the user can measure their program current based on how large their image is (FRAM write curent is given in Table 5-34).

    Regards,
    Ryan
  • 0 in reply to Ryan Brown1
    TI__Expert 7895 points
    Hi Ryan,
    Thanks for your input.
    According to MSP-FET manual, output voltage VCC_TOOL able to change voltage between 1.8v to 3.6v.
    How do we change this input value ? I think this default value is 3.3V.

    Is it better to use external VCC ?

    JTAG and Spy-Bi-Wire Interface, Electrical
    Power supply
    USB powered, 200 mA (max)
    Target output voltage VCC_TOOL
    1.8 V to 3.6 V (guessing 2.0V to 3.6V)
  • 0 in reply to Kz777
    TI__Guru**** 218217 points
    Kz777,

    It depends on the software tool being used, the MSP-FLASHER script has a special exit specification whereas CCS or FETPro430 have different configuration settings that can be modified. You can use an external VCC if desired, just make sure to connect pin 4 of the JTAG to VCC in place of pin 2.

    Regards,
    Ryan
  • 0 in reply to Ryan Brown1
    TI__Expert 7895 points
    Thanks. It cleared.

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