On Fri, Jan 28, 2011 at 1:30 PM, Olin Lathrop w= rote: > YES NOPE9 wrote: >> I want to use the lowest end PIC that has a USB interface and >> firmware to support the serial port class. > > Look at the 18F25K50 or thereabouts. =A0There may be a smaller version in= that > subfamily with less memory and therefore lower cost, I don't remember off > the top of my head. =A0You can look all this up easily on the Microchip s= ite. I believe you're thinking of the 18f13k50 etc. The 25k20 isn't USB. PIC18F13K50-I/SS is $1.66 ea (qty: 1) from microchipdirect.com. Regards, Mark markrages@gmail --=20 Mark Rages, Engineer Midwest Telecine LLC markrages@midwesttelecine.com --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .