real time clocks is located in package 16-SOIC (0.295, 7.50mm Width).As of Tube, time clock is packaged in this way.There is 3V~6V voltage supply for this electrical RTC.It can be said that this electrical real time clock belongs to the Clock/Calendar type.The real time clock (RTC) that is mounted in the way of Surface Mount is connected to this circuit board.In order to operate properly, the temperature should be -40°C~85°C.During the course of operation, Alarm, Leap Year, Square Wave Output, Watchdog Timer can be ensured.A total of 16 pins are included in this product.CDP68HC68T1 are the family name of RTCs .As far as the supply voltage for this electrical digital time clock is concerned, it is 2.2V~6V.For the purpose of storing data and programs, the RTC times are embedded with a storage capacity of 32B.