Arduino Forum

Using Arduino => Microcontrollers => Topic started by: wigman27 on Apr 28, 2015, 09:56 am

Title: Are Ugnd and Gnd isolated from each other on ATMega32U4?
Post by: wigman27 on Apr 28, 2015, 09:56 am
Hi,

I am just wondering if the GND and Ugnd pins are isolated internally from each other on the ATMega32U4?

The reason I am asking is I would like to isolate my GND and Usb ground on the board and wondering if the ATMega does it without having to go to a specific USB isolator?

Any info would be greatly appreciated.

Thanks

Lee
Title: Re: Are Ugnd and Gnd isolated from each other on ATMega32U4?
Post by: Paul__B on Apr 28, 2015, 01:16 pm
No, you do not isolate UGnd from GND.

Refer to the Leonardo schematic (http://arduino.cc/en/uploads/Main/arduino-leonardo-schematic_3b.pdf).