Kinetis Microcontrollers中的主题 Re: using the MK22FX512VLL12. Does the USB (device) require 5V into VREGIN to operate? A separate 3.3V source is applied to VDD. https://community.nxp.com/t5/Kinetis-Microcontrollers/using-the-MK22FX512VLL12-Does-the-USB-device-require-5V-into/m-p/390144#M21226 <HTML><HEAD></HEAD><BODY><P>Hello Brandon:</P><P></P><P>Yes the transceiver gets its power from the Vreg, so you must connect VREGIN. It does not have to be 5V. according to datasheet you can wire VREGIN to VDD (3.3V)</P><P></P><P>Regards!,<BR />Jorge Gonzalez</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 14 Oct 2014 15:28:31 GMT Jorge_Gonzalez 2014-10-14T15:28:31Z using the MK22FX512VLL12. Does the USB (device) require 5V into VREGIN to operate? A separate 3.3V source is applied to VDD. https://community.nxp.com/t5/Kinetis-Microcontrollers/using-the-MK22FX512VLL12-Does-the-USB-device-require-5V-into/m-p/390143#M21225 <HTML><HEAD></HEAD><BODY><P>Does the internal transceiver only get power from VREGIN?</P></BODY></HTML> Tue, 14 Oct 2014 14:06:09 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/using-the-MK22FX512VLL12-Does-the-USB-device-require-5V-into/m-p/390143#M21225 brandontaylor 2014-10-14T14:06:09Z Re: using the MK22FX512VLL12. Does the USB (device) require 5V into VREGIN to operate? A separate 3.3V source is applied to VDD. https://community.nxp.com/t5/Kinetis-Microcontrollers/using-the-MK22FX512VLL12-Does-the-USB-device-require-5V-into/m-p/390144#M21226 <HTML><HEAD></HEAD><BODY><P>Hello Brandon:</P><P></P><P>Yes the transceiver gets its power from the Vreg, so you must connect VREGIN. It does not have to be 5V. according to datasheet you can wire VREGIN to VDD (3.3V)</P><P></P><P>Regards!,<BR />Jorge Gonzalez</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 14 Oct 2014 15:28:31 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/using-the-MK22FX512VLL12-Does-the-USB-device-require-5V-into/m-p/390144#M21226 Jorge_Gonzalez 2014-10-14T15:28:31Z