Introduction - If you have any usage issues, please Google them yourself
DS1302 is a trickle charge clock chip introduced by DALLAS, which contains a real-time clock / calendar and 31 bytes of static RAM, and communicates with the microcontroller through a simple serial interface. Real time clock / calendar circuit provides seconds, hours, day, date, month, year, days the number of days per month and leap year can automatically adjust the clock operation instructions through the AM/PM decided to use 24 or 12 hour format. DS1302 and SCM can simply use synchronous serial communication, only need to three lines: 1 RES reset; 2 I/O data line; 3 SCLK serial clock. The read / write data of the clock /RAM is communicated in groups of one byte or up to 31 bytes. The power consumption of the DS1302 is very low. When data and clock information is maintained, power is less than 1mW