【通信应用笔记】实现STM32F10xxx微控制器RTC的时钟或日历

【通信应用笔记】实现STM32F10xxx微控制器RTC的时钟或日历
AN2821
Application note
Clock/calendar implementation
on the STM32F10xxx microcontroller RTC

The internal RTC (real-time clock) of the 32-bit, ARM Cortex-M3-based medium-density
STM32F10xxx microcontroller is an independent timer. It provides a set of continuously
running counters, which, using suitable software, can be used to implement a clock/calendar
function. The RTC and backup registers are supplied through a switch that draws power
from either the VDD supply (when present) or the backup