Am 13.01.2015 um 19:40 schrieb Barry Klein: > As a last resort I may "sprinkle" some ceramic caps near VDD pins. They used a lot of .01uF's and maybe .1's would be better. Recently I heard that in today's fast digital circuits 0.01 uF are better suited for supply decoupling than 0.1 uF caps. The resonant frequency of smaller caps is higher. Ingo