Harold said: > 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. Richard said: > Though several folks have offered suggestions, isn't it possible that the > missing information may be relevant to the real solution, if for no other > reason than to eliminate the PIC32 SPI speed as a contributing factor? As per my last post (may have crossed in mail), the clock rise time is a major factor, even at lower speeds. ie you can't have a very low rise time with a very fast clock (Tr max ~= 3 /Fclk) BUT you can have fast rise times with a slow clock. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist