RJ Roybal

52258 Coldfire: How do we detect RTC battery loss / Loss of time?

Discussion created by RJ Roybal on Nov 11, 2010
Latest reply on Nov 12, 2010 by ioan petrescu

I see in the MCF52258 / 59 Ref Manual that the real time clock registers only get "reset" once, if the power sourct (backup battery) is disconnected.  The Days, Hours, and Minutes values go to "??".  Is there a bit to test to see if the clock is invalid?