Overview Specification The DS3231 RTC Module is a highly accurate and reliable real-time clock that keeps track of seconds, minutes, hours, day, date, month, and year, even when your microcontroller is turned off. Featuring an integrated temperature-compensated crystal oscillator (TCXO), it maintains time with minimal drift. This module also includes a backup battery holder to retain timekeeping during power loss. Ideal for time-stamping, scheduling tasks, or building clocks in Arduino, Raspberry Pi, and other embedded systems. Chipset: DS3231Timekeeping Range: Seconds, Minutes, Hours, Day, Date, Month, YearInterface: I2C (2-wire)Operating Voltage: 3.3V – 5VAccuracy: ±2ppm (temperature-compensated)Backup Battery Support: CR2032 (not always included)Built-in EEPROM: Some versions include 24C32 (32Kb)
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