HT1380串行实时时钟芯片具有接口简单、功耗低、工作电压范围宽、计时精确、功能全（可对分、秒、时、日、日期、月及带闰年补偿的年进行计数）、成本低等优点，因此在实际应用中被广泛采用，下面先简单介绍一下该芯片的情况，然后实际工作中采用的子程序供读者参考。-HT1380 serial interface real time clock chip with a simple, low power consumption, wide operating voltage range, timing precision, function-wide (available on the minutes and seconds, time, day, date, month and year with leap year compensation to count), low cost etc., so in practical applications that are widely used, the following to briefly explain the situation in the chip, and then used in the actual work Subroutine reference for readers.