August 2013

DocID005227 Rev 3

1/7

AN923

Application note

Managing century information using serial real-time clocks and

By Doug Sams

Introduction

byte of year data in binary-coded decimal (BCD) format. Many devices include additional

bits for tracking the century, effectively extending the year register. Applications can use

software to further extend the century/year data to any desired resolution. The amount of

software required depends on the resources built into the chip and the resolution needed by

the application.

www.st.com