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MSP430F5529: MSP430F5529 LaunchPad(MSP‑EXP430F5529LP)を使用したLPM4時の消費電流

Part Number: MSP430F5529
Other Parts Discussed in Thread: ENERGIA

MSP430F5529 LaunchPadを使用してLPM4時の消費電流を測定しています。

開発環境:Energia

使用している内部モジュール:ADC、RTC、GPIO等

suspend() でLPM4となった際の消費電流

・USBを接続して、GND以外のジャンパを外した状態で、MSP430F5529側に+3.3Vを投入

2.3uA

・USBを外し、GND以外のジャンパを外した状態で、MSP430F5529側に+3.3Vを投入

70uA(不安定)

USBの接続の有無で消費電流が変わります。

消費電流を2.3uAで固定したいのですが、70uA(不安定)になる原因と解決策を教えてください。

  • Hi,

    Could you describe your issue in English so we can help you? Thank you!

    Best regards,

    Cash Hao

  • The MSP430F5529 LaunchPad is used to measure the current consumption during LPM4.

    Development environment: Energia

    Internal modules used: ADC, RTC, GPIO, etc.

    Current consumption when suspend () becomes LPM4 -Connect USB, remove jumpers other than GND, and apply + 3.3V to the MSP430F5529 side.

    2.3uA 

    With the USB removed and the jumpers other than GND removed, + 3.3V is applied to the MSP430F5529 side.

    70uA (unstable)

    The current consumption changes depending on whether or not a USB is connected. I would like to fix the current consumption at 2.3uA. Please tell me the cause and solution for 70uA (unstable).

  • Hi,

    When you remove the USB connections, have you disable the USB function in the software at the same time?

    Best regards,

    Cash Hao

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