带农历功能的串行接口时钟芯片

The Serial Interface Clock Chip with Lunar Calendar Function

介绍了一种通用串行接口时钟芯片的设计方法。该芯片通过一个三线串行接口与微处理器通信;内置实时时钟提供秒、分、时、日、月、周和年等信息;公历转农历硬件电路提供农历日、月、年等信息;集成62字节的RAM可用以存储临时信息;格雷码分频技术有效地减小了系统功耗。

The article introduces a design method of a general serial interface clock chip. The chip communi-cates with micro - processor through a 3 - wire serial interface; embedded real - time clock provides information on second, minute, hour, day month, week and year; the Gregorian - to - Lunar calendar conversion circuit provides information on day, month, year in lunar format; embedded 62 - 8bit - RAM may be used to store temporary infor-mation. Gray code frequency divider reduces the power consumption effectively.