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nav999 wrote:I am using an atmega32u4 microcontroller in my project. The 32u4 is connected in my project in a same way as that of atmega32u4 breakout board from sparkfun. In my project the 32U4 is connected to 5v and 16mhz crystal oscillator and it works fine and gets detected by my PC. But my project requires to be run at 3.3v. when i connect it to 3.3v at 16mhz my PC shows 'USB device not recognized. even at 12Mhz and 8Mhz at 3.3v is shows the same error . Please help me on getting the atmega32u4 running at 3.3v by any means possible.What oscillator frequency does the code running on the 32U4 require for the USB to work correctly?
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