On Sun, 4 Aug 2002 19:21:21 -0400 Michael Simpson writes: > One thing that must be concidered is that any error that the > Resonator or > crystal has will also be multiplied by 4. This could effect high > speed > serial IO. As I dig further into this I will post my results. > But, the percentage error remains the same. If I'm off by 0.5% at 10 MHz, I'll also be off 0.5% at 40 MHz. The absolute error is multiplied, but the relative error (as percentage of frequency) is not. A UART will work properly with up to about 5% bit rate error, so the 0.5% error of a typical resonator is no problem. Harold FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com Reach broadcasters, engineers, manufacturers, compliance labs, and attorneys. Advertise at http://www.hallikainen.com/FccRules/ . ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads