Using the watchdog (WWDG) timer and disabling readout protect in the program will cause a reset.

[Satoshi]

I am testing Readout protect using STM32F103. 

When the watchdog timer function is stopped, both level �?0 → 1�? and level �?1 → 0�? of Readout protect are operating correctly.

If level �?1 → 0�? works correctly, it seems that the program has been erased, which is what we wanted.

However, when Readout protect level �?1 → 0�? was performed with the watchdog timer function activated, it was reset.

Is there a problem with the RDP change operation of the option byte while the watchdog timer is running?

Thanks in advance for your help !