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What to do with unused USB I/O pins on LPC2148?

Question asked by Rodion Vronsky on Dec 11, 2017
Latest reply on Dec 12, 2017 by Rodion Vronsky

I'm creating a design with the LPC2148 where I don't use the USB functionality.

 

What should I do with the following pins:

 

  • D+ (USB D+ Line), pin 10.
  • D- (USB D- Line), pin 11.

 

I need to avoid EMI because my board is used in industrial applications and noisy environments.

 

Can I leave the pins unconnected or should I tied to ground?

What is better for EMI ?

 

I looked in all the available datasheets and manuals but none of them are telling what to do when not using the USB peripherals.

 

Thanks in advance

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