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How to wire up an Atmega32u4

Discussion in 'Microcontrollers, Programming and IoT' started by j4cobgarby, Oct 12, 2018.

  1. j4cobgarby

    j4cobgarby

    49
    1
    Sep 18, 2018
    I'm designing a keyboard PCB, and I need to use a microcontroller to send data over a micro-USB port. I've picked the Atmega32u4. Now, I'm not entirely sure how to wire it up. I've attached what I've got so far.

    So, I want to wire it up in such a way that I can program the firmware over USB. I assume I've hooked VBUS, D+, and D- to the correct pins, although I don't actually understand what these pins are.

    Even though I've read the documentation, I'm not sure what the other pins on the microcontroller do. I'm under the impression that XTAL1/2 are for the clock, and it's pretty obvious what RESET does, but certainly I don't understand the others.

    What I'm looking for is some example of a atmega32u4 wired up to a micro USB connecter, which I can study and then figure out how to wire up mine.
     

    Attached Files:

  2. Muya

    Muya

    1
    0
    Oct 12, 2018
    i have bose ps 28 the fuse blowing
     
  3. j4cobgarby

    j4cobgarby

    49
    1
    Sep 18, 2018
    what?
     
  4. BobK

    BobK

    7,642
    1,662
    Jan 5, 2010
    Look at the circuit for an Arduino board that does that.

    Bob
     
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