On Sun, Sep 23, 2012 at 6:44 PM, William "Chops" Westfield wrote: > Fifteen new PICs with crystal-free USB operation. Includes 16F varieties= down to 14 pins, 18F "replacements" for the venerable 4550 and 2550, and l= arger 18F varieties. One blurb I read mentions that these chips only obtain 0.25% accuracy when actively connected to USB. Does this mean they are synchronizing to the timebase in the USB host? -p. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .