Hello, I think this was already covered here, but I've searched the archives and found nothing interesting. The PIC is very precise for using one of the interrupts as an RTC? Obviously, I mean a PIC in equipment that is always on. Or is it more recomendable to use an RTC-on-a-chip like the ones from Dallas (DS1307)? What is the more common/cheap/simple RTC that uses I2C? Best regards, Brusque ----------------------------------- Edson Brusque Research and Development C.I.Tronics Lighting Designers Ltda Blumenau - SC - Brazil www.citronics.com.br ----------------------------------- -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu