Disable all reset sources during debugging to resolve the issue. More information is available in Active Watchdog issues.
Enabled ICUM prevents access to Flash through PE1. Before any Flash operation, ICUM must be disabled.
Make sure that ICUM is disabled.
Refer to Renesas RH850 / P1x-C: UMI Error, R_FAD_ERR_CLOCK The CPU clock frequency is incorrect topic.
Caused by issues in older winIDEA:
The DisableLockBits option disables the lock bits before erasing the flash. If this option is disabled and the flash sectors are locked, the erase operation fails.
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