> Is the usage nanowatts? You are basing your > consumption on 32kHz Xtal? If you do the calculations you'll see that the mean consumption can be hundreds of microwatts - well within the scope of some processors. As you note, he needs to be more specific about the task for anyone to be able to give a really useful answer. RM -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist