Harold Hallikainen wrote: > The 75MHz speed is what the SPI flash is rated at. I'm running a LOT > slower than that. But, the fact that the flash can respond to 75MHz > clocks makes it real sensitive to very short reflections on the line > that other chips do not respond to. OK, but it's still useful to know the top speed the clock will actually be run at. That determines how much you can filter the clock output and therefore avoid frequencies that are susceptible to reflections and the like. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist