Dear All, Reference MCU STM32F4 As we all well aware the following code for set the speed of the port pins
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
Is this saying the signals come to the port pin's more than 50MHz will not capture and the port can not sends signals more than 50MHz frequency? Am I correct?
Please advice
It would be much appreciated if some one can give me a some links taking about this information since it does not have in the ARM manuals
Thanks in advance
As we all well aware the following code for set the speed of the port pins
Ah yes, I remember it well. First day at primary school. The teacher sat us all down in our little seats and said "Now listen carefully children, to set the GPIO speed to 50MHz you must assign the value GPIO_Speed_50MHz to GPIO_InitStructure.GPIO_Speed".
Dear Pap Duke, Thanks for the reply
What is advantage setting different speed other than power consumption
Please advice Thanks Dayan
Slew Rate, Speed of Edges, how aggressive the output driver is.
Too slow, and clocking too fast, you'll get something looking like a triangle wave instead of a square wave.
Does not relate to inputs.
The pins will be re-synchronized into the processor's domain (may be CPU clock, or one of the IO cell), you'll get Nyquist sampling issues, aliasing, etc as one might expect.