Maybe it's important to add that it's a dsPIC (30F5011 to be exact), and that I want it to be precise, hence an error of 16383/16384 is already very significative for me. I want to be limited by the 32768 xtal precision, not by software setting mistakes. At 01.19 2008.05.22, you wrote: > >Hi, >I am using a 32.768 watch crystal connected to Timer1. I'd like Timer1 >to generate >an interrupt exactly each 1.0000 seconds. Should I load 16383 or 16384 >to PR1? What >it's not clear to me is if the value specified is ever reached in TMR1. > >Thanks, >Mario > >-- >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist