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STM32L4 Backup Domain Register

dobs
Associate II

Hey, I want asking something, I have a value on backup register, but when the tamper is active when power off, the value on my backup register was reset. On datashet get to protect the backup domain no erase or mask flag bit must enable. I set the no erase bit to enable but the backup domain still reset when tamper occurence. Can you help me how I can protect may value data on backup register ? Thankyou - dobs

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