I am looking for a way to isolate the VDDBU pin 52 and connect to a Li Battery so the built-in RTC will maintain time. Pin 52 is connected to 3V3 as per the schematic. I looked at the board with a magnifier and the clad goes to a plate thru. I was wondering if the pin can be isolated by drilling o…

Backup PWR to DUE's RTC

graynomad April 6, 2013, 1:06pm 7

Thanks.

Rob