PIC10F206 - What is the LOWEST Power @ Rest or Sleep

[sougata]

Hi Joe,

It is a nice idea. Once fired when the PIC enters the SLEEP it will probably delatch due to current less than the minimum latching current. But I personally feel it is not necessary as it adds to the hardware cost and also causes power loss (disipation). Not recommended for a battery powered low (ultra???) current equipment. With the 10F206 it is possible to shut it off into ultra low power mode by software only without any modification to the existing circuit and PCB.

Rixtalbert I hope by this time you have already implemented what jerson suggested. If not then post your code or usage of the peripherals --> Interrupts, Pin Change, Comparator etc so that an actual code snippet can be thrown.

[rixtalbert]

Right off!~

Thanks to all the guys that have commented on this issue of mine.

I have attached a crude code with current readings during the time of the events as best I could to help sort out the problem.

I am still speaking with Fluke on model 189 issues to understand why their Forms View software does not record the same readings as the the 189 meter display. That is a different problem.
Honestly, the new Fluke 189 was probably not meant to record such low uA readings with much accuracy.
But I do see around 2uA at the END statement with peaks every few seconds to around 89 uA.(These 89uA current peaks are what I want to kill)

I have tried all of the suggestions in my brainless code snippet to see where the edge is of current draw...

It is funny that the NAP to NAP transistion seems to draw around 400 + uA current. OOOOOHHHH well.

And also the END statement without turning on the (WDT fuse ),in the settings Just locks a 10F206 where it cannot be restarted after power is removed and reconnected. It is a one time program run. After that ,, No more running after re=power UP.

Thanks again Guys...
and I will keep reading the fine line.

I did find a nice post in the Proton section that had problems with a PIC not wanting to sleep. I had the link and it vaporized in my network before I could paste it..


Regards for your advice
Rix

[skimask]

I am still speaking with Fluke on model 189 issues to understand why their Forms View software does not record the same readings as the the 189 meter display. That is a different problem.
Honestly, the new Fluke 189 was probably not meant to record such low uA readings with much accuracy.
Rix

http://assets.fluke.com/datasheets/2153ExtSpecs.pdf

I just had a look at the '189's spec's on their site. They say it's good for .25% + 20 counts measuring DC, higher than that if AC. But, they also state that's only if the meter has been cal'd in the last year. Short answer from me anyways...it should be able to measure those currents without a problem...

Not sure about the other problems. I didn't see anything in the errata that caught my eye. I'd be inclined to think that your problem lie elsewhere, the power grid, something else in the room, static charge, something... I don't know enough about what you've got going on.

(Ya know, using a power switch doesn't draw much current I kid...I kid...)

[rixtalbert]

Well , I know this is getting off the original topic, but I may as well Identify the Fluke Problems or limits.
Speaking with a Fluke engineer this morning. He stated that the Fluke 189 , Mine is four Months old, ,,, that the meter itself is logging 4 samples per second. Not Much but still enough to catch the 10F206 wakeing up to do something, WDT whatever. Normal Sleep has been a nice 1.9 uAmp sleep.
Then the 88. to 129uAmp capture while waking from sleep every few seconds or so. He stated that these measurments should be very close to the spec posted on the meter.
The problem with the Fluke Forms Logging software is that it polls the meter directly once every second and gets its own readings. NOT WHAT may have been in a memory address of the meter. So I told the engineer that i left the test run for about five hours while the PIC was in sleep and wakeing up. You would think that I could have at least captured one high 88uAmp reading from the Fluke Forms software in that time. NO WAY. He didn't really comment on this question or situation.



So, I conclude that the Fluke software used for this purpose is OUT. The meter is still great on it's own for the other logging that it can do by itself.
My comment to FIX the Problem "Since the Fluke 189 knows that the meter is being recorded vai a PC and their Fluke Forms software, U would think that, In that Once every second, the sofware would have it's own storage area to say, Hey, I saw that pic wake up the last one second that I polled you. Thanks 189 meter and reset after I get the data to the Fluke Forms Software, Then record the next set , and I'' get back to you in a second.... OK,,,,,,,," It might miss a few peaks and valleys while doing all that chatting but might get lucky and catch some valid data. The WDT is as much a chatter box as me..

I guesss I need a $20,000 dollar meter to read a 45 cent PIC, with a 2 cent program register error thanks to me.

Life is Good,

I wish I could add the Switch, as suggested, it is a sure fire way, but I have not been certified for diving below 500 feet deep. ( That is where the Pic is).

I had really thought I missed something, or just didn't know something in the PBP software that would allow me to shut down the chip in software. ( Thats how this thread got started)

PS...Good News,, I have found one way to put the pick to sleep without a switch or software,,,,,,,,,,,,,,,,,,,,,,,Just one piece of Hardware with no moving parts..............












I always wondered why I kept this Claw Hammer in my office and not in my garage. It works great... but same problem as turning WDT off... It will not restart again on re-powerUP..


back to the drawingboard or in this case,,, Skate board.

Regards Guys,,

Rix

[skimask]

Well , I know this is getting off the original topic, but I may as well Identify the Fluke Problems or limits. Speaking with a Fluke engineer this morning. He stated that the Fluke 189 , Mine is four Months old, ,,, that the meter itself is logging 4 samples per second. Not Much but still enough to catch the 10F206 wakeing up to do something, WDT whatever. Normal Sleep has been a nice 1.9 uAmp sleep. Then the 88. to 129uAmp capture while waking from sleep every few seconds or so. He stated that these measurments should be very close to the spec posted on the meter.
The problem with the Fluke Forms Logging software is that it polls the meter directly once every second and gets its own readings. NOT WHAT may have been in a memory address of the meter. So I told the engineer that i left the test run for about five hours while the PIC was in sleep and wakeing up. You would think that I could have at least captured one high 88uAmp reading from the Fluke Forms software in that time. NO WAY. He didn't really comment on this question or situation. So, I conclude that the Fluke software used for this purpose is OUT. The meter is still great on it's own for the other logging that it can do by itself. My comment to FIX the Problem "Since the Fluke 189 knows that the meter is being recorded vai a PC and their Fluke Forms software, U would think that, In that Once every second, the sofware would have it's own storage area to say, Hey, I saw that pic wake up the last one second that I polled you. Thanks 189 meter and reset after I get the data to the Fluke Forms Software, Then record the next set , and I'' get back to you in a second.... OK,,,,,,,," It might miss a few peaks and valleys while doing all that chatting but might get lucky and catch some valid data. The WDT is as much a chatter box as me.. I guesss I need a $20,000 dollar meter to read a 45 cent PIC, with a 2 cent program register error thanks to me. Life is Good, I wish I could add the Switch, as suggested, it is a sure fire way, but I have not been certified for diving below 500 feet deep. ( That is where the Pic is). I had really thought I missed something, or just didn't know something in the PBP software that would allow me to shut down the chip in software. ( Thats how this thread got started) PS...Good News,, I have found one way to put the pick to sleep without a switch or software,,,,,,,,,,,,,,,,,,,,,,,Just one piece of Hardware with no moving parts..............I always wondered why I kept this Claw Hammer in my office and not in my garage. It works great... but same problem as turning WDT off... It will not restart again on re-powerUP.. back to the drawingboard or in this case,,, Skate board. Regards Guys,,
Rix

Nice to know about the Fluke recording software. Is there anything out there, 3rd party, Google-able, hobbyist guy written that'll handle it for you? How about a video of the meter face itself? At least you can fast forward thru it. But you're right, you'd figure you would've caught a spike here and there.

At any rate, maybe this is one of those cases where you just have to make the battery bigger than you really want to so it will handle the extra current draw....ya know, avoid a complete redesign, cut your losses, etc.etc. That's what I'd do in a case like this. It's not optimal, but it might save a load of heartburn...

[Archangel]

Hmmmm, salt water electrolyte, make case out of 2 metals 1 insulator and who needs a battery?

[skimask]

Hmmmm, salt water electrolyte, make case out of 2 metals 1 insulator and who needs a battery?

How do you know it's salt water?
And I always thought 'salt water' wasn't salty enough for any sort of useful battery. I know about galvanic corrosion and all that, but that seems a bit short on juice. Maybe enough to keep a cap charged up for a burst of juice when it wakes up? Might be an interesting thing to try out someday...