This paper introduces the functions and characteristic of RX-8025.Combining the 9S12A64 to the RX-8025 ,applied in a specific way, and given concrete procedure list.

• 本文介绍了实时时钟芯片RX-8025的功能及特点,并结合在9S12A64单片机上的应用,给出了具体的程序清单。