Description: DALLAS U.S. companies have launched small trickle current charging the capacity of low-power real time clock DS1302 circuit structure, working principle and its application in real-time display of time of application. It can be years, months, days, weekdays, hours, minutes and seconds for time, and has multiple functions, such as a leap year compensation. DS1302 are given in the C51 to read and write procedures and flow chart, as well as in debugging in the process of attention.
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