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Microcontroller power consumption (MSP430F47187IPZ)

sergTI
Prodigy 10 points

Other Parts Discussed in Thread: MSP430F47187

Hi,

I'm running a design analysis to see how much heat some components generate. The component I'm currently looking at is a microcontroller and below is its link to the datasheet

www.mouser.com/.../msp430f47187-405500.pdf

My question is how do I find the amount of heat this device generates? What is the max power dissipation that comes off from this device? I was hoping to see the Vmax and Imax so I can do a simple P=VI, but I don't seem to find the current. There are more than different currents listed and it's ambiguous which one to use. Can someone help on how to read the datasheet and how to find that information?

Thanks! 

  • 0
    TI__Guru**** 220767 points
    Hi Serge,

    Being a low-power microcontroller this device generates very little heat and no thermal information was gathered by TI to provide in the datasheet. Vmax and Imax vary greatly depending on your application. All digital IO pins and functionalities reflect the voltage supplied to the DVcc pin, and likewise for analog capabilities and the AVcc. Most of the time DVcc and AVcc are provided by the same supply which can operate the MSP430F47187 device from 1.8 to 3.6 V depending on desired output/communication voltages and core frequency. Typically a Vcc of 3.3 V is provided, but most tests are done at 2.2 V and 3 V. Current consumption depends on the device mode, low power (LPM) or active, along with how many outputs are being driven. Given a 3 V Vcc without sinking current from outputs, maximum active mode current is 560 uA for a power consumption of 1.68 mA. This of course increase once you start driving peripherals, outputs, etc.

    Regards,
    Ryan

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