For PCF8523, how to calculate backup time when supercap is 0.22F?
I've checked UM10301.pfd, there is a formula to calcuate it, but I don't know
what Vcbackupend is?
Please help to point it out? 1.8v or 1v....
Using C·V = I·t: C⋅(V ) − V Cbackupstart Cbackupend = t backup I RTC