The PLL is built into the chip, so all you need is a 10MHz XTAL and 2 small caps. Bob Ammerman RAm Systems ----- Original Message ----- From: "D. Jay Newman" To: Sent: Wednesday, April 30, 2003 5:27 PM Subject: Re: 40mhz clock for PIC18FXX2... > > have a couple of 20mhz crystals laying around I could double....but, keeping > > it simpler is sounding good to me. I really don't need the whole selectable > > clocking feature that using the PLL really buys. > > Well, you could run it at 20MHz, or you could use the built-in PLL, like > I've always done. To use a crystal all you need are a couple of small > capacitors. I agree that a resonator is easier, and if you have some, use > them. > > I've generally used a 10 MHz resonator with the built-in 4xPLL for 40 MHz. > > Good luck! > -- > D. Jay Newman ! Pudge controls the weather. > jay@sprucegrove.com ! > http://enerd.ws/~jay/ ! Oh good. My dog found the chainsaw. > > -- > 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