RZK application using RTC of eZ80F91 MCU

This application note describes a Zilog Real-time Kernal (RZK) application that uses the real-time clock (RTC) peripheral of Zilog’s eZ80F91 MCU to function as a world clock. 

A 4X4 keypad and LCD display interface is provided to set and view the local time and local date of a country, set the local time with daylight saving, and also to operate a stopwatch. The current time is maintained in the 24-hour format. 

Developing the RZK-RTC Application 

This application note focuses on how to use RZK in a multi-threaded environment along with the RZK timer. The RZK software timer accuracy is enhanced by increasing the number of ticks per second.