Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA4M1AB/CAC/CACR0#0x0
CFME=0
CAC Control Register 0
Clock Frequency Measurement Enable.
0 (0): Disable
1 (1): Enable
These bits are read as 0000000. The write value should be 0000000.
https://github.com/cmsis-svd/cmsis-svd-data