hello.this is the first time I've had this problem , I describe this problem next:1 the io initialization input is normal (this is the feature I want)2 when I power off and restart, I find that the same pin initialization input is not responding3 rep...

hello,The option byte is configured with read and write protection, but I can program without erasing, why?FLASH_OBR = 0x03FFFFFAFLASH_WRPR = 0xFFFF0000