Lpc2000

Ahh, I see the pin configuration footnotes in the user manual! When the 
chip is being designed at the silicon level, output drivers can be 
specified for various levels of drive and slew rate. This is really very 
similar to fpga chips where you can configure the amount of drive and 
slew rate, but only at the design level.

Although the silicon is capable of driving the lines faster this has 
side-affects such as increased noise in the way of current spikes on the 
chip supply and also increased EMI. In the old days a chip designer 
didn't worry too much about slew rate control, that's what they wanted 
to get rid of! :)

To "program" a different slew rate you need to set the Philips register 
to a sufficiently high $$$ value ;)

*Peter*

croquettegnu wrote:
> Hello Peter,
>
> I know what is a slew rate, do not worry about that and I had found
> this figures but I just wanted to know if the term __control__ in slew
> rate control extracted from the user manual signified that there is a
> way to change it
> Because as you probably know, changing this value could be very
> interesting regarding CEM...