9/16/2023 0 Comments Stm32 real time clock![]() ![]() Although some may argue that this is a job for the system clock, the system clock is actually dependent on the RTC, making the RTC indirectly responsible for synchronization.Īn RTC battery should last for three to five years or more. Aside from being responsible for the timing function of the system and its clock, RTC ICs ensure that all processes occurring in the system are appropriately synchronized. ![]() RTC ICs regulate time with the use of a crystal oscillator and do not rely on clock signals like most hardware clocks. But in most consumer-grade motherboards, the RTC is powered by a single battery that, when removed, resets the RTC to its starting point. RTC ICs that use supercapacitors are rechargeable and can be soldered. ICs on older systems utilize lithium batteries, whereas newer systems make use of auxiliary batteries or supercapacitors. RTC ICs run on an alternate power source, which allows it to continually operate under low power or even when the computer is turned off. RTCs must accurately keep time, even when the device is powered off because, it is often used as a trigger for turning the device on or triggering events such as alarm clocks. Being able to still function even when the computer is powered down through a battery or independently from the system’s main power is fundamental. RTCs can be found running in personal computers, embedded systems and servers, and are present in any electronic device that may require accurate time keeping. Naturally, it counts hours, minutes, seconds, months, days and even years. What is RTC: What Does Real-Time Clock (RTC) Mean?Ī real-time clock (RTC) is a computer clock, usually in the form of an integrated circuit that is solely built for keeping time. In this guide, we will cover the following:ġ. In this guide, we shall see how the internal RTC of STM32F4 is working and what features it holds and in part2, we shall configure the RTC and display the time and date on Liquid Crystal Display (LCD). ![]()
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