Hi, pretty sure this is an error in the schematic found on the main Micro reference page - http://arduino.cc/en/uploads/Main/arduino-micro-schematic.pdf ?
In the "+5V Reg" section, PFET T2 is used for reverse polarity protection right? Shouldn't the gate be connected to GND instead of +5V, as per How to protect circuits from reversed voltage polarity! - YouTube]How to protect circuits from reversed voltage polarity! - YouTube ?
Thanks
Jonathan