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MSP430FR6043: powering MSP430FR6043 from eZ-FET

Soorej Ponnandi
Prodigy 50 points
Part Number: MSP430FR6043
Other Parts Discussed in Thread: MSP-EXP430FR4133,

Please pardon the newbie question.

I am trying to power MSP430FR6043 IC using eZ-FET of MSP-EXP430FR4133 Launchpad. I have removed all the jumpers and connected all AVCC, DVCC, PVCC pins to 3V3 and all DVSS, PVSS AVSS pins to GND, as showed in picture. Also connected RST and TST pins to debug/program the MSP430FR6043 . Will this power up and flash the IC? Please help.

  • 0
    TI__Mastermind 28426 points

    Hi soorej,

    Using the ez-FET on the EXP430FR4133 to download program to the MSP430FR6043 chip is no problem (Just connected 3V3 GND RST TST), the cable is correct, but you need to check the pin of the FR6043 chip (including power supply, GND, or other pins required to ensure the chip work connection).
    You can refer to the schematic in the EVM-FR6043 board and the pin descriptions in the datasheet.

    http://www.ti.com/tool/EVM430-FR6043

    http://www.ti.com/lit/ds/symlink/msp430fr6043.pdf

    Best Regards

    Johnson

  • 0 in reply to Johnson He
    Prodigy 50 points

    Johnson,

    Thank you for the reply. It really helped.

    It worked when all Vccs and Vss pins are connected. But, do I need to power all Vcc pins even If, all the functionalities/peripherals provided by the MCU are not used? Is there a way to know the pin groups/peripherals sourced by VCC pins in the above table. Also, I am confused as there are more VSS pins than VCC (not pairs).


    Regards,
    Soorej

  • 0 in reply to Soorej Ponnandi
    TI__Mastermind 28426 points

    Hi scoorej，

    For the first question : do I need to power all Vcc pins even If, all the functionalities/peripherals provided by the MCU are not used?

    Some internal resources of the chip are powered by separate pins, some are powered by common pins, and we do not provide detailed information on the distribution of VCC pins. Therefore, in order to ensure normal for all function, all VCC and VSS pin need to be connected when used.

    For the second question :  I am confused as there are more VSS pins than VCC (not pairs).

    There is no one-to-one correspondence between the VCC and VSS pins on the chip. The number and location of these pins are affected by many factors, such as: convenient for internal layout, radiating, electromagnetic interference, and high current protection.

    Best Regards

    Johnson

  • 0 in reply to Johnson He
    Prodigy 50 points

    Thanks for quick and detail explanation. Appreciate it!!

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