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Dear Professional,
Yes, your meaning is OK, but I think the situation is not so optimistic.
Because I think the battery will leak current when stay in air, or connect to the metal or something,
and I don't know the battery 's capacity if will be changed when supply 500nA, which is a small...
that is , i want to use a multimeter to test the current of the RTC Vbat pin.
So , I can estimate how long the 12mAh battery can be used by the RTC.
i.e, if I get the current of Vbat is 300nA, I can suppose the battery will be used for 1.5 years.
That is still an estimated value. So, I want a...
Dear Professionals,
I have a RTC with backup battery switch function.
If the Vcc is remove, the RTC will switch to Vbat to power.
Now I have a choice to use a small 12mAH battery to be a backup battery.
So, I can calculate the theory work time of the RTC.
That is:
12mAH / 150nA = 80,000Hrs =...
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