DS3231 Real Time Clock RTC Module

DS3231 Real Time Clock RTC Module 

The DS3231 RTC Module is a highly accurate, temperature-compensated real-time clock IC that provides precise timekeeping for a wide range of electronic projects. Unlike basic RTCs (such as DS1307), the DS3231 includes an integrated temperature-compensated crystal oscillator (TCXO), which drastically improves accuracy and stability over varying temperatures.

It communicates via the I2C interface and can maintain accurate timekeeping even during power loss using a CR2032 backup battery. Many DS3231 modules also include an AT24C32 or AT24C256 EEPROM for extra data storage.

The module tracks seconds, minutes, hours, day, date, month, and year, with automatic leap-year correction. It supports both 12-hour and 24-hour time formats and also provides two programmable alarms and a square-wave output.

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Features:-

• Operating voltage :3.3 – 5 .5 V
• Clock chip: high-precision clock chip DS3231
• Clock Accuracy :0-40 ? range, the accuracy 2ppm, the error was about 1 minute
• Calendar alarm clock with two
• Programmable square-wave output
• Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
• Chip temperature sensor comes with an accuracy of ± 3 ?
• Memory chips: AT24C32 (storage capacity 32K)
• I2C bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)

Applications

• High-precision clocks (digital clocks, world clocks)
• Data logging systems (environmental monitoring, industrial logs)
• IoT devices needing time-stamping
• Smart metering and power monitoring systems
• Attendance systems (RFID/Biometric)
• Event-based automation (time-controlled relays, scheduled lighting)
• Home automation systems
• Timers and schedulers
• Embedded systems requiring long-term accuracy
• Portable and battery-operated devices