USB Pullup ressistor

kjepsen9 · ‎2008-06-15

Posted on June 15, 2008 at 11:30

kjepsen9 · ‎2011-05-17

Posted on May 17, 2011 at 12:37

Hello,

For my custom board i like to remove the software connect/disconnect and only have the 1.5K pull up resistor.

must it be pulled up to 3V3 or the 5V from the usb?

Kasper

16-32micros · ‎2011-05-17

Posted on May 17, 2011 at 12:37

Hi kasper,

Have a look on Datasheet , Section USB characteristics; D+ Should be pulled to 3V3 volts ( your VDD) . Hope this helps you for your Board design.

Cheers,

STOne-32.