Hi list ! Anyone who knows if the external interrupts can wake you up from power = down mode even if they are masked by software. They seem to do so in my = circuit, I use AT90LS8535 by the way...=20 Regards Attila Muhi - SM4RAN -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu