On Fri, Apr 26, 2013 at 1:24 PM, Eric Bénard <eric at eukrea.com> wrote: > what are the values of these levels (previous one and new one) in mV ? 0x10 ==> 2.5V 0x12 ==> 2.6V 46v32m16 says that VDD is : 2.5V +/- 0.2V, so 2.6V is a valid supply voltage. Not sure why 2.5V fails though. Regards, Fabio Estevam