Re: Pull up resistors on Spartan 3 mode pins



For crying out loud, do not make a federal case out of this!

If the documentation asks for a short circuit, then do it!
If your gut feel says there is no need for any external pull-up at all,
then measure the internal pull-up impedance the way I suggested, and if
it is below 3 kilohm, then connect nothing.
If the FAE suggests an external resistor, so use one.
This may be a question of belts or suspenders or both or neither...

But remember: If you want to establish a logical Low level, you must
definitely be cautious and measure whether you are fighting an internal
pull-up.

I much rather spend 10 minutes with a multi-meter than indulge in
contankerous debates in the newsgroup.
We are all engineers and not scribes, aren't we?

Peter Alfke, obviously somewhat irritated...
Like Austin, I am human, too.
Even though we always wear the Xilinx badge, we are still allowed to
voice an opinion...

.