On Sun, 25 Jul 2010 13:57:04 -0500, "Charles Rogers" said: >=20 > ----- Original Message -----=20 > From: "Olin Lathrop"=20 > > You'd have to run the PIC from a **very** slow clock to get timer 2 dow= n=20 > > to > > that period. Then you'd have to wait a few weeks to verify it's workin= g. > > > > >=20 > Olin: > Are you saying it is possible to accomplish what the OP is looking for > but just isn't feasible. I think he was saying that timer 2 will overflow if you want a 20 Megasecond period unless you run the PIC at a very slow oscillator frequency. Cheers, Bob --=20 http://www.fastmail.fm - The professional email service --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .