Kinetis Microcontrollers中的主题 Re: MK20DN512ZVLQ10 USB FAILURES https://community.nxp.com/t5/Kinetis-Microcontrollers/MK20DN512ZVLQ10-USB-FAILURES/m-p/497559#M31001 <HTML><HEAD></HEAD><BODY><P>Hi Kevin</P><P>have you check that there is not any manufacturer problem like a solder short or missing part?</P><P></P><P>Maybe you have a solder short on the USB area.</P><P>regards</P><P>Vicente Gomez</P></BODY></HTML> Fri, 12 Feb 2016 20:46:39 GMT vicentegomez 2016-02-12T20:46:39Z MK20DN512ZVLQ10 USB FAILURES https://community.nxp.com/t5/Kinetis-Microcontrollers/MK20DN512ZVLQ10-USB-FAILURES/m-p/497558#M31000 <HTML><HEAD></HEAD><BODY><P>We manufacture 3 products with this component. </P><P></P><P>We have numerous instances (100+) instance of the product having been assembled and programmed with a Cyclone production programmer, then fails when connected to USB.</P><P></P><P>The equipment is not seen by the host computer and the micro-controller gets <STRONG>extremely</STRONG> hot.</P><P></P><P>This issue only occurs if USB is connected. Other operations are unaffected.</P><P></P><P>95% of product appears OK and has no issue on the USB in either removable disk or COM port mode.</P><P></P><P>Does anybody have any similar problems with this device failure mode? Is it a common issue with the USB?</P><P></P><P>Is this a common mode of device failure? </P><P></P><P></P><P>Thanks in advance.</P></BODY></HTML> Tue, 09 Feb 2016 14:02:29 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MK20DN512ZVLQ10-USB-FAILURES/m-p/497558#M31000 kevinmc 2016-02-09T14:02:29Z Re: MK20DN512ZVLQ10 USB FAILURES https://community.nxp.com/t5/Kinetis-Microcontrollers/MK20DN512ZVLQ10-USB-FAILURES/m-p/497559#M31001 <HTML><HEAD></HEAD><BODY><P>Hi Kevin</P><P>have you check that there is not any manufacturer problem like a solder short or missing part?</P><P></P><P>Maybe you have a solder short on the USB area.</P><P>regards</P><P>Vicente Gomez</P></BODY></HTML> Fri, 12 Feb 2016 20:46:39 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MK20DN512ZVLQ10-USB-FAILURES/m-p/497559#M31001 vicentegomez 2016-02-12T20:46:39Z