STM32是以Cortex-M3为核的处理器，该例程介绍STM32下如何对备份寄存器进行操作。备份寄存器可用电池来供电。-Cortex-M3 based STM32-core processor for the routine introduction STM32 how to operate on the backup register. Register can be used to backup battery power supply.
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