is on-chip RTC in LPC1769 accurate?

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jan 8, 2018 by Martin Schröder
Content originally posted in LPCWare by karuna on Wed May 18 01:11:24 MST 2011
I am using LPC1769 controller. I need a perfect time reference. Is it preferable to use on-chip RTC?
  Because I am using external crystal of 32.768KHz. But its loosing 5 to 7 minutes a day. Is it because I'm using wrong crystal (32KHz in datasheet)?
  Should I need to do calibration for 32.768KHz crystal? Pls help.
  Thanks in advance