Author Topic: Do USB D-/D+ lines for PIC18 require EMI (RC) filtering?  (Read 1232 times)

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Offline pratikenTopic starter

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Do USB D-/D+ lines for PIC18 require EMI (RC) filtering?
« on: November 22, 2015, 12:55:13 am »
Hi guys

I recently ran into an issue with USB cable lengths and an FT230XS where I didn't include the 47R and 27pF on the data lines. I'm working on a project now where I use CDC for communication so I have the D+/D- lines going directly to a PIC18F2550. Do I need to include any RC for this situation? I've had some trouble locating answers for this specific situation.

edit: also, for whatever reason, would the 5 pin header for programmer jtag need filtering as well? I haven't used any RC on the programmer jtag before, but if it's the "correct" way to do it I'd like to.

Thanks for the help
« Last Edit: November 22, 2015, 01:07:41 am by pratiken »
 


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