PIC18F458 oscillator modes

[josegamez]

Thanks a lot guys. About the PIC supporting 36 Mhz I don't think there's any trouble, the datasheet states that it runs from DC to 40 Mhz, although it is true that PBP supports 33 Mhz and not 36 but I don't think it makes much difference for my aplication if PBP thinks it's 33 and the timings because of that turn to be a little bit off. The reason I didn't use a 40 xtal was that I could NOT get one anywhere so I bought the closest I could find. But thanks about the internal PLL tip, that was great, I hadn't even seen that, I think I will use that to get to an actual 40 MHz thanks. Again thank you guys, you were all very helpful. God bless

[BigWumpus]

I think, the quickest crystal you can get is between 20 and 25MHz. All crystal at higher "speeds" need to be driven on the 3rd harmonic frequency... PICs doesn't do that. Use the PLL-option instead !!