Data Sheet
60
Lesson 24  Real Time Clock Module 
Overview 
In this lesson, you will learn how to use the DS3231 Real Time Clock Module. 
Components Required 
Name  Qty  Name  Qty 
UNO R3 or MEGA 2560  1  DS3231 RTC Module  1 
DuPont Wire  4     
Component Introduction 
The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with 
an integrated temperature  compensated crystal oscillator (TCXO) and 
crystal. The  device incorporates  an  onboard battery which  maintains 
accurate timekeeping even when unplugged. The RTC module can output seconds, minutes, 
hours, day, date, month, and year information. 
Wiring Diagram 










