Regarding cautions of system clock

Correction method when the system clock (ICLK) is set to a frequency higher than 12MHz with the RX130, RX230 and RX231 groups.
It will not switch from medium-speed operation mode to high-speed operation mode, even if the system clock (ICLK) is set to a value higher than 12MHz. For this reason, add code referencing the "After modification" details.



  1. Correct the source file as below.
    • Source file: r_cg_hardware_setup.c
    • Function: void R_Systeminit(void)
  2. Add code referencing the "After correction" details.


Before correction

Before correction system clock

After correction

After correction (system clock plan)