RTC_BKP_NUMBER

回答: RTC_BKP_NUMBER是指RTC备份寄存器的数量。根据引用\[1\]和引用\[2\]的内容，可以看出RTC备份寄存器的数量为20个，每个寄存器都有一个对应的BKP_DATx值。此外，根据引用\[3\]的内容，RTC备份寄存器可以用于存储一些废代码或其他数据。
#### 引用[.reference_title]
- *1* *2* [国民技术RTC备份寄存器RTC_BKP](https://blog.csdn.net/dailin2012/article/details/129725497)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [STM32H743I-EVAL2_RTC_Tamper](https://blog.csdn.net/LostSpeed/article/details/104093835)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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