Cool, now it can die from tin whiskers before the battery does.
More like the battery will leak charge and acid first. But you get the idea.
Being able to run for decades from whatever battery Atmel had in mind when working out that it could run for decades from it is just one way of looking at things. Another way is to realise that the lower your power consumption gets, the smaller your power source needs to be to maintain the same runtime, which may open the door to power sources other than a battery...
Still, given that Li-ion was invented merely ~24 years ago, we might be surprised. I have one last Panasonic CGR18650HM that I pulled from a worn-out Thinkpad 600E pack roughly a decade ago, and while left in a box for more than a few years, it kept a proper voltage. Today it still charges and runs an MP3 player. On the other hand, it was apparently made in Japan as opposed to China. YMMV
IoT detection alarm
And THIS device sounds an alarm if, and only if, someone invents an IoT device that's both innovative and practical. Otherwise, it sits dormant.
We expect the battery to last a decade or more.
Re: IoT detection alarm
Pro tip: prevent DoS attacks against the power supply by leaving the networky bits turned off.
Doesn't it need
to do regular comms tests?
Else "There's a fire" will fall on deaf antenna, since the comms world has moved on in a decade...
Re: Doesn't it need
Possibly... although the actual alarm indication may be Someone Else's problem, but a weekly or monthly comms test may simply mean you need to change the battery every year. You know, like with smoke detectors...
Re: Doesn't it need
But at least the comms test could *tell* you that the battery needs changing...
Could be useful for some stuff. Radiators and other stuff that toggles a few times a day or less.
Bet they cost a fortune to get started with...
Atmel SAM L21 Xplained Pro Evaluation Kit (pictured above) is $49 from the Atmel store or it will be if it comes into stock. I imagine there will be cheaper (and more expensive) 3rd party boards available soon.
"the SAM-L21 is not particularly powerful"
That all depends on what you're using as a comparison benchmark...
If the controller sensor is a transducer, like a magnetic core microphone, then power will never be an issue.
Re: Transducer supply
I was thinking something similar when someone above mentioned radiators. They may be the lowest-power chips yet, but I guess we're not going to see these powered by thermopiles especially if they're an active part of a thermostat system.
The other thought that struck me was the ROTM angle. It's a little bit frightening that they now have the capability of running in "sleeper cell" mode for decades, just biding their time waiting ... waiting ...