Current consumption of I/O MCU MSP430FR5949

Sidya DRAME

Other Parts Discussed in Thread: MSP430FR5949

Hi all, i would like to know if we can know the current consumption of I/O of the MSP430FR5949 MCU without making a measurement. In the datasheet, I was able to read the current on AVCC but not on I/O. How to Know MCU I/O consumption current ?

Best regards

over 3 years ago

0 Johann Zipperer over 3 years ago

TI__Intellectual 2100 points

Hi,

Look into the DS:SLAS704 at table 5.7.

Here on I_LPM4 (last row) the cumulative current of the whole device is shown when all clocks and static consumers are off.

If you look at the numbers you see that the values do not change a lot by voltage, but by temperature. Here we are talking about leakage current of the die itself. Now you are asking for the I/O as such. The I/O ring represents approx. 20-25% of the whole device. Therefore divide the values from you I_LMP4 row by 4 or 5.

The value you got comes with an +/- 6 to12dB accuracy since we just did a rough estimate.

Have a nice day

Johann

0 Sidya DRAME over 3 years ago in reply to Johann Zipperer

Prodigy 250 points

Okay Johann, thank you for your answer !

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Current consumption of I/O MCU MSP430FR5949