Mike Harrison wrote : > >3. Put the part to sleep whenever possible. > > But if using xtals or resonators remember that there is a > time (and therefore power) associated with > wakeup You can run it in "double-speed-startup" where it runs (directly) from the intosc until the main osc is stable. For short runs you might be back in sleep before the main osc has started. For others "sessions" where you have (e.g.) serial comms, you can wait for the main osc to startup (there is a flag to watch). Jan-Erik. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist