How long does the SuperCap of the PCD3.M3xxx protect the media and RTC from being lost?
The resources (registers, flags, timers, counters etc) and possibly the user program and the text strings/DBs on a PCD3.M3xx0 are stored in RAM. To ensure that they are not lost and that the hardware clock (where present) continues to run when there is a power failure, the PCD3s are equipped with a buffer capacitor (SuperCap).
Unfortunately the time has not been specified correctly in the manual 26/789 until version 11 of the manual. The duration is 4 hours and not 8 hours (after the SuperCap has been charged while 10 minutes).
PCD3 / Mxxx
Last update: 25.05.2015 09:15
First release: 12.05.2010 16:59