Hallo, List ! On the PIC16F946 I view 2 pins named AVss and AVdd. I understand it's the power for analog periferals of the pic. But the datasheet say only "2 words" about it : on page 211 of DS41265A : it must be powered for ICSP. I don't know if I must use a separate power device for this pins or I can rely theses pins to Vdd and Vss respectively. Artem -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist