版本 12235236d59cd8f786e3886844dc39dbeff651cc
Changes from 12235236d59cd8f786e3886844dc39dbeff651cc to e8fd1baedcb74c7fcc23e39c027487d8ec5d1eab
Introduction
=============
A real-time clock (RTC) is a computer clock that keeps track of the current time. RTCs are also present in almost any electronic device that requires accurate time keeping. The real-time clock (RTC) embedded in STM32 microcontrollers acts as an independent BCD timer/ counter.
Features
===============
- Calendar
- Alarm
- Auto wakeup
- Timestamp
- Tamper detection
- Programmable daylight saving time
- Didigal calibration
- Synchronization
- Reference clock detection
- Backup register
- Alternative function IO
Clock Source
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LSI RC : 32 kHz
LSE OSC : 32.768 kHz
HSE OSC : 4-26 MHz
.. image:: /stm32F4 RTC clock source
Configuration
================
