DS1302 RTC Real Time Clock

DS1302 timing IC
This real time clock has the ability track second, minute, hour, day, week, month, year, and the ability to adjust a leap year
Wide working voltage: 2.0~5.5 V
When The working voltage is 2.0V, the current is less than 300nA
Read/write clock or RAM data have two transmission modes: Single-byte / many bytes group
Simple 3 line interface. Easy to install