LPC1756 RTC One time initialization

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by sathyan on Mon Jul 21 08:28:49 MST 2014
Dear All,

I just started working on the inbuilt RTC block of LPC1756.

I have an external battery connected to Vbat.

I have programmed the RTC time values in flash and its working fine. Now the values will be retained even after micro controller power off . But, when i switch on the micro controller, the RTC will be initialized again with the default time values!

How to overcome this situation and retain the first loaded time values even after consecutive micro controller power off/on?