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multilink FX providing power for MPC5554
. Nov 8, 2019 at 04:31 AM (04:31 hours)
Staff: Takao Y.

  • hi,we want to providing Power for MPC5554 when programing it,but we have some problems,the MPC5554's IO voltage is 3.3V, core voltage is 1.5v,the io voltage and core voltage is both generate by 5V.if we use multilink fx providing the power ,if it is meaning we can only providing io voltage ,the core voltage is still 0v,the result is program failed??


  • Greetings,

    For PowerPC Nexus, you cannot avoid providing 12V DC to the board. We cannot communicate just to the chip by providing 3.3V. There are other components that needs to be powered up on the board for the chip to be able to enter debug. With the multilink FX, you have no choice. If you had the cyclone, you could connect the 12V DC to the relay in and relay out connection so that the cyclone can control power.

    Takao Yamada
    Lead PPC NEXUS design engineer

    • hi,sorry´╝îi can't understant well,can you explain why we must providing 12v in detail? or what is the function of 12V?

  • Greetings,

    Every automotive design I have ever used in the last 11 years has required 12V DC on the board (not on the chip!). This is industry standard. There are many other components on the board that needs to be powered up to make sure the chip boots up correctly. Please refer to the board's user manual or schematics to determine how to power up the entire board.

    Takao Yamada

  • Greetings,

    Were you able to resolve this issue? Have you found a way to power up the board externally?

    Takao Yamada

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