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MSP430 with the Lowest Current Consumption and the lowest clock frequency

Sharwari Kulkarni
Intellectual 490 points
Other Parts Discussed in Thread: MSP430F2013

Hello All,

Which is the MSP430 device that has the lowest current consumption at the lowest clock frequency.

I want to run a very simple timer program on that MSP430 using VLOCLK.

Which device in the MSP430 series has the lowest current consumption and what is the current consumed by that device?

 

Regards,

Sharwari

  • 0
    TI__Expert 7845 points

    I noticed from your other posts that you are using the MSP430F2013, so you can actually continue using that for this application.

    Please see the code example "msp430x20x3_1_vlo.c" & "msp430x20x3_ta_05.c" in the following zip file on how to do this:
    http://www.ti.com/lit/zip/slac080

  • 0
    TI__Expert 4420 points

    the MSP430F2013 is a really good suggestion for ultra-low power and it's not a bad pick considering you can get a full dev kit for it for $20 (see eZ430-F2013) but there are other devices that are even lower power.  if you're running a basic timer app, the power will be dominated by the LPM3 current in VLO mode.   

    if you check out the MCU selection tool on www.ti.com/mcu and sort them by standby current, you'll see several devices that go as low as 300nA.  i would actually recommend that you check out the MSP430F2132 (LPM3, VLO: 300nA @ 25C / 2.2V) and great active mode current (250uA @ 25C / 2.2V).  the F2013, by comparison is speced at 500nA in LPM3 (although in real life i've seen it go lower).

    either way, they're both ridiculously low power so we might be splitting hairs and it might come down to other factors in application like package options, cost, etc.

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