My experience with PIC sleep has been quite interesting. When I executed the sleep instruction, the system was still draining about 0.40mA. At times it would take up more...... After reading the article on the PICLIST, I found that the output pins MUST not float or it would drain power. After setting all pins as output and latch them to low. The power consumption is well below. 0.00mA(from my fluke). Just sharing my experience. John __________________________________ Yahoo! FareChase: Search multiple travel sites in one click. http://farechase.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist