RTC Subsystem, Recent Changes and Where it is Heading

Real time clocks are usually simple peripherals because their mainfeature is to keep track of the current time. However this task isactually harder than it seems because time keeping actually depends …

Real time clocks are usually simple peripherals because their mainfeature is to keep track of the current time. However this task isactually harder than it seems because time keeping actually depends onthe quality of the source oscillator which may vary depending onmanufacturing or the environment. Also, many RTCs also include morefeatures that need to be exposed to the user.This talk will introduce RTCs and their features. It will then presentthe RTC subsystem, how it recently changed and how the API will evolveto support more common functionalities.