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MSP430FR2633: Standby power consumption with proximity

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Part Number: MSP430FR2633

Captivate team,

Can you help come up with an estimate of standby power consumption for an application?  We need to have at least 1 electrode used for a proximity sense.  There will also be a set of touch buttons (10 to 12).  Standby power consumption is critical and must be minimized.  The device needs to wake up on a proximity event with the longest range possible.

I'm assuming the MSP430FR2633 will be used to allow for enough self capacitance buttons, but it's not a requirement to have self instead of mutual.  If it's lower power to do 1 self capacitance prox electrode, and the rest as mutual capacitance, we can do that.

Our datasheet says 1.7uA/button average in standby.  I believe this is based on a minimum number of pins (maybe 4).  How will the other factors I've given above affect the standby power consumption?

Thanks,

Darren

  


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