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MCU Recommendation for Low Power Remote Sensor Application

Stephen Huber
Prodigy 30 points

Hello!

I'm looking for a MCU with low power consumption to use for a remote sensor application.  These senors will be installed in somewhat harsh conditions in developing countries.  I'm currently using a Arduino Mega to prototype my sensor but need something with lower power and better sleep capabilities.  Additionally, I need a chip that has at least three hardware interrupt pins.  The speed is not critical but I need at least 64Kb of RAM.  Is there a good TI MCU that fits these requirements that I can compare against others I've found?

Thank you!

Stephen

  • TI__Guru**** 220727 points
    Hello Stephen!

    I'm glad to hear that you are considering using the MSP430 for your application! All of our MSP430 MCUs have at least three hardware interrupt pins and configurable low-power modes (LPMs) for maximum efficiency. Do you have any other peripheral requirements to consider (ADC resolution, communication channels, etc.)? The best-priced parts fitting the 64 kB (assuming you mean kilobytes and not kilobits) RAM requirement are the MSP430FR58xx/MSP430FR59xx devices, which operate at 0.5 uA in LPM3 and 0.25 uA in LPM3.5. Here is the datasheet for the MSP430FR59xx to use as a reference: www.ti.com/.../msp430fr5949.pdf

    Let me know if you need any more help sifting through the MSP430 portfolio!

    Regards,
    Ryan

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