>> Doesn't "nanowatt" mean that the chip has a set of features aimed at >> low power operation Well... http://www.microchip.com/stellent/groups/designcenter_sg/documents/ designcenter/en500064.pdf "What is nanoWatt echnology" not as feature-specific as I thought, but "managed multiple clock sources" is explicitly included... BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist