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FRDM K64 can’t run at 120Mhz

Question asked by Mike Smith on Nov 1, 2014

Hi, I’m trying to use my K64 with a bareboard Project. So I decided to configure the system clock. I wanted to run the K64 at 120 MHz in PEE mode, but I failed, somebody can help me? I attached the code I’ve been using; My code works for frequencies below 66 MHz (at the output of MCGOUTCLK). I’m using the mcg diver that is provided by freescale.



Note: If I configure the PLL with correct values (PLL0_PRDIV=25 and PLL0_VDIV=50) for 120 Mhz the debugger gets lost

Original Attachment has been moved to: MCG_sources.rar