Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revisionBoth sides next revision | ||
stm32:peripherals:rtc_wakeup [2017/10/23 12:33] – [Setup wakeup timer] ruan | stm32:peripherals:rtc_wakeup [2021/09/03 08:52] – frtt: Initially Add BDCR register frtt | ||
---|---|---|---|
Line 90: | Line 90: | ||
|WUTWF*|0|Wake up timer configuration not allowed| | |WUTWF*|0|Wake up timer configuration not allowed| | ||
|:::|1|Wake up timer configuration allowed| | |:::|1|Wake up timer configuration allowed| | ||
+ | |WUTF||Wake up timer flag is set by hardware when wakeup counter reaches 0 and cleared by software by writing 0.|| | ||
* This bit is set, after the WUTE bit (control register) has been set to 0, and reset by hardware. | * This bit is set, after the WUTE bit (control register) has been set to 0, and reset by hardware. | ||
+ | |||
+ | ===== Back domain control register ===== | ||
+ | |||
+ | ==== RCC_BDCR ==== | ||
+ | Back domain control register | ||
+ | |||
+ | \\ {{rcc_reg_bdcr.svg}} \\ \\ | ||
+ | |||
+ | |< 100% 5em 5em >| | ||
+ | |RTCEN*|0|RTC clock disabled| | ||
+ | |:::|1|RTC clock enabled| | ||
+ | |RTCSEL|00|No clock| | ||
+ | |:::|01|LSE oscillator clock used as the RTC clock| | ||
+ | |:::|10|LSI oscillator clock used as the RTC clock| | ||
+ | |:::|11|HSE oscillator clock divided by a programmable prescaler(selection Through RTCPRE[4:0] bits in the RCC clock configuration register (RCC_CFGR)) used as the RTC clock| | ||
+ |