AnsweredAssumed Answered

MK60DX256 Crystal doesn't startup

Question asked by rabbit on Nov 12, 2012
Latest reply on Nov 14, 2012 by Pedro Augusto Panecatl Salas

I have built two prototype board, it seems the crystal doesn't startup. I use 16Mhz crystal with two 10pF load capacitor, I use scope to check the waveform, there is no 16Mhz signal at EXTAL, the IAR debuuger stop at

"while (MCG_S & MCG_S_IREFST_MASK){}; // wait for Reference clock Status bit to clear".


I check the reference manual, in Chapter 26, it mention that "Rf" maybe required, but it doesn't say how much should be the value, 10M? 5M? ..