Look at www.microchip.com for Aplication MAESTRO, it has a RTC in assembler to built in your project- Greetings Mauricio Jancic Janso Desarrollos (54) 11 4542 3519 Republica Argentina Microchip Consultant Program Member -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Eduardo Garcia Sent: Martes, 13 de Mayo de 2003 9:15 To: PICLIST@MITVMA.MIT.EDU Subject: Clock under PIC16F873 Hello friends, I need to implement a clock on pic16F873. Need I to add a real time chip on my project? Can I to build this clock with the pic timer? I know that using a 4Mhz clock will get exactly 1uS cycle. Is this enough? Thanks in advance! --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.481 / Virus Database: 277 - Release Date: 13/05/03 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body