Hi all, It’s correct PLLCFG on ARM7_LPC2129_IAR demo or must be PLLCFG = 0x24 ? On FreeRtos 5.4.0 demo project:  Fosc : 12Mhz CCLK : 60Mhz PLLCFG = 0x04 If it’s not correct there’s a big problem? Regards Carlos

The PLL output frequency is given by: Fcco = Fosc * M * 2 * P which given the value 0x24 in PLLCFG gives: 120MHz = 12000000 * 5 * 2 * 1 which would indeed appear to be wrong, but the demo seems to run at the right frequency which must be fluke. Regards.