This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP430F6779A: LPM3 and LPM3.5 Supply currents

Part Number: MSP430F6779A

I'm considering to use LPM3 and LPM3.5 on MSP430F6779A while power supply and battery we have selected are supply voltage in 3.3 V. Therefor I would like to find actual supply currents in operating temp @50℃. But in data sheet (Refer to data sheep no. SLAS982A <page 29>) did not specify value in such conditions I mentioned to.

So my question is what are the numbers of Supply currents for these two low power modes; LPM3 (Crystal mode) and LPM3.5 in following conditions?

- Maximum supply current @25℃, Vcc = 3.3 V
- Typical and Maximum supply current @50℃, Vcc = 3.3 V

And how can I calculate or estimate numbers of those supply currents?

  • Hello Nattapol,

    Looking the F6779A datasheet, section 5.0, the specifications are tested during manufacturing under the conditions shown in the various tables.  Unless noted they are usually @3.3VDC and @25C.  Data for a particular specification at a different temperature is not available.

    I would anticipate that the VCC specification shown in the datasheet @25C would be higher with elevated temperature.

    Unfortunately there is no formula to calculate or estimate what that value might be so I would recommend sampling a few devices and perform a temperature characterization on your own.  The more devices you measure, the better spread of data you will get.

  • Hello Nattapol,

    I haven’t heard from you for a couple of days now, so I’m assuming you were able to resolve your issue.
    If this isn’t the case, please click the "This did NOT resolve my issue" button and reply to this thread with more information.
    If this thread locks, please click the "Ask a related question" button and in the new thread describe the current status of your issue and any additional details you may have to assist us in helping to solve your issues.

  • Hi Dennis lehman,

    Sorry for my long time disappear. I might perform the test as your suggested. However it will be great if you can test on your samples for us either.

    Many thanks for your reply,

    Nattapol

  • Hi Nattapol,

    Unfortunately I don't have immediate access to one of these devices and no way to test @ 50C.

**Attention** This is a public forum