PicDude wrote: > But does Vdd-before-Vpp also imply a max time between these 2 events? > Or can Vdd be on for many seconds before Vpp comes on? Usually not, but in this case there was a note about that. There was also the usual note about raising MCLR from 0 to Vpp quickly. I'm not totally sure the Vdd to Vpp time restriction applies if MCLR is raised quickly. You could look at the spec and decide for yourself. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist