I swear when I looked at LPC17xx a while back it had the max SDRAM clock at 60Mhz but Joe just tested G120 with 120Mhz SDRAM clock and it worked perfectly fine. Then we went back to datasheets I am not finding the 60Mhz limit anywhere anymore!!!
What is really nice here is that once SDRAM is 120Mhz, G120 runs almost 3 times as fast as EMX. Anyone of you guys know the answer to this? Is max SDRAM 60Mhz or it can safely run at 120Mhz?
i think you are right GUS:
this is what i found…
EMC of the LPC1788 is only rated to 80MHz not 120MHz and the EMC clock is feed from the CPU clock not the MUX. This means that when your CPU is running at 120MHz the max your EMC can run at is 60MHz (CPU/2)…