topic A question regarding MC9S08JM32 usb module power in 8-bit Microcontrollers https://community.nxp.com/t5/8-bit-Microcontrollers/A-question-regarding-MC9S08JM32-usb-module-power/m-p/995773#M23012 <HTML><HEAD></HEAD><BODY><P>Hello, I'm making a testing board using the MC9S08JM32 for USB applications but I'm not sure i understand the power situation, according to the datasheet the USB-B connector should be routed like so:</P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="dgsdgasasdg.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/98705i26795E693D2B5CC0/image-size/large?v=v2&amp;px=999" role="button" title="dgsdgasasdg.png" alt="dgsdgasasdg.png" /></span></P><P></P><P>However I've connected it like this:</P><P><span class="lia-inline-image-display-wrapper" image-alt="gaewgdsg.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/99190iD5C7D0EEEED109FB/image-size/large?v=v2&amp;px=999" role="button" title="gaewgdsg.png" alt="gaewgdsg.png" /></span></P><P>In this design the VCC bar is either 3.3V or 5V depending on what source i connect to the board's power terminals.</P><P></P><P>P4 is a 3-pin strip intended to use a jumper between pins 1&amp;2 or 2&amp;3</P><P></P><P>The Vusb bar is connected to the MCU's VUSB33 pin.</P><P></P><P>This is an error right?</P><P>I'm not sure I understand what Vbus or what is supposed to connect to, does it come from the Host(PC)?</P></BODY></HTML> Fri, 20 Mar 2020 13:05:13 GMT donperotti2 2020-03-20T13:05:13Z A question regarding MC9S08JM32 usb module power https://community.nxp.com/t5/8-bit-Microcontrollers/A-question-regarding-MC9S08JM32-usb-module-power/m-p/995773#M23012 <HTML><HEAD></HEAD><BODY><P>Hello, I'm making a testing board using the MC9S08JM32 for USB applications but I'm not sure i understand the power situation, according to the datasheet the USB-B connector should be routed like so:</P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="dgsdgasasdg.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/98705i26795E693D2B5CC0/image-size/large?v=v2&amp;px=999" role="button" title="dgsdgasasdg.png" alt="dgsdgasasdg.png" /></span></P><P></P><P>However I've connected it like this:</P><P><span class="lia-inline-image-display-wrapper" image-alt="gaewgdsg.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/99190iD5C7D0EEEED109FB/image-size/large?v=v2&amp;px=999" role="button" title="gaewgdsg.png" alt="gaewgdsg.png" /></span></P><P>In this design the VCC bar is either 3.3V or 5V depending on what source i connect to the board's power terminals.</P><P></P><P>P4 is a 3-pin strip intended to use a jumper between pins 1&amp;2 or 2&amp;3</P><P></P><P>The Vusb bar is connected to the MCU's VUSB33 pin.</P><P></P><P>This is an error right?</P><P>I'm not sure I understand what Vbus or what is supposed to connect to, does it come from the Host(PC)?</P></BODY></HTML> Fri, 20 Mar 2020 13:05:13 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/A-question-regarding-MC9S08JM32-usb-module-power/m-p/995773#M23012 donperotti2 2020-03-20T13:05:13Z Re: A question regarding MC9S08JM32 usb module power https://community.nxp.com/t5/8-bit-Microcontrollers/A-question-regarding-MC9S08JM32-usb-module-power/m-p/995774#M23013 <HTML><HEAD></HEAD><BODY><P>PLease check</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/103786iD220421A4B8141F2/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>Internally the USBDP is tied to VUSB33 through a pull up</P><P>I hope this will help you</P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_2.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/103831i32396918885500C3/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_2.png" alt="pastedImage_2.png" /></span></P><P></P><P></P><P>Regards</P></BODY></HTML> Mon, 23 Mar 2020 17:54:56 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/A-question-regarding-MC9S08JM32-usb-module-power/m-p/995774#M23013 vicentegomez 2020-03-23T17:54:56Z