【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 ……