Would this USB detection circuit work as expected


Posted on Feb 4, 2014

When ONLY VR will supply power to circuit, then MCU again will get power from +5V bus, but FTDI will ONLY get VCCIO. On middle of voltage divider R10/R11 I expect there will be 0 and MCU will not detect USB connection on (B). The question is - would it work the way I described or I missed something My concern is it ok to hook up only VCCIO to


Would this USB detection circuit work as expected
Click here to download the full size of the above Circuit.

FTDI Would it damage or lead to unknown behavior




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