DS1302 Real Time Clock Breakout Module - RTC

What is the RTC Module ? The RTC (Real-Time Clock) module is an electronic device that provides a clock to track and display the current date and time. It uses a battery as a power source to keep the time accurate even when the main power is turned off. RTC modules can be integrated with microcontrollers such as Arduino to keep track of time and date in projects such as calendars, clocks, data loggers, and other applications that require time-based functionality. The RTC module communicates with the microcontroller through I2C or SPI protocols. There is a timekeeping board that contains a real-time clock and calendar. This board is a breakout module for the DS1302 chip and onboard a battery holder. It has a universal 32.768 kHz crystal oscillator.  You can connect and read data with 3-wire interface.   DS1302 IC is a RTC module that is capable to hold seconds, minutes, hours, days, months, and years information continuously.  This product does not contain batteries. You need a CR2032 b