LPC MicrocontrollersのトピックRe: What to do with unused USB pins on LPC4337? https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548542#M13663 <HTML><HEAD></HEAD><BODY><P>The pins I mentioned above are dedicated USB pins. I can't configure them as GPIO.</P></BODY></HTML> Fri, 08 Jul 2016 06:31:08 GMT thomaslantinga 2016-07-08T06:31:08Z What to do with unused USB pins on LPC4337? https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548540#M13661 <HTML><HEAD></HEAD><BODY><P>I'm creating a design with the LPC4337JET100 where I don't use the USB functionality.</P><P>What should I do with the following pins:</P><UL><LI>USB0_DP</LI><LI>USB0_DM</LI><LI>USB0_VBUS</LI><LI>USB0_ID</LI><LI>USB0_RREF</LI><LI>USB1_DP</LI><LI>USB1_DM</LI></UL><P>Can I leave the pins unconnected or should I pull them up or down?</P><P>I looked in all the available datasheets and manuals but none of them are telling what to do when not using the USB peripherals.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Kind regards,</P><P>Thomas Lantinga</P></BODY></HTML> Thu, 07 Jul 2016 13:11:31 GMT https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548540#M13661 thomaslantinga 2016-07-07T13:11:31Z Re: What to do with unused USB pins on LPC4337? https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548541#M13662 <HTML><HEAD></HEAD><BODY><P>Config them to general IO mode and treat them as IO pins.</P></BODY></HTML> Fri, 08 Jul 2016 01:58:11 GMT https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548541#M13662 xianduidong 2016-07-08T01:58:11Z Re: What to do with unused USB pins on LPC4337? https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548542#M13663 <HTML><HEAD></HEAD><BODY><P>The pins I mentioned above are dedicated USB pins. I can't configure them as GPIO.</P></BODY></HTML> Fri, 08 Jul 2016 06:31:08 GMT https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548542#M13663 thomaslantinga 2016-07-08T06:31:08Z Re: What to do with unused USB pins on LPC4337? https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548543#M13664 <HTML><HEAD></HEAD><BODY><P>Hello Thomas,</P><P></P><P><SPAN style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">I suggest the below connections. I hope this helps. </SPAN></P><UL style="list-style-type: disc;"><LI>USB0_DP----- unconnected</LI><LI>USB0_DM---- unconnected</LI><LI>USB0_VBUS pulled low</LI><LI>USB0_ID---- unconnected</LI><LI>USB0_RREF pulled low</LI><LI>USB1_DP----- unconnected</LI><LI>&nbsp; <SPAN style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">USB1_DM---- unconnected</SPAN></LI></UL><P><BR />Have a great day,<BR /> Sol</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 29 Jul 2016 16:34:28 GMT https://community.nxp.com/t5/LPC-Microcontrollers/What-to-do-with-unused-USB-pins-on-LPC4337/m-p/548543#M13664 soledad 2016-07-29T16:34:28Z