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The DS3231 RTC Module is a miniature Real-Time Clock module designed to provide precise timekeeping for electronic projects, including those involving Raspberry Pi and Arduino. It operates seamlessly within a wide temperature range, making it suitable for both indoor and outdoor applications. With its ability to maintain accurate timekeeping, provide battery backup, and support various clock functions. Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.

It has Two calendar alarms, 1Hz, and 32.768kHz output. Reset output and input buttons Debounced High-speed (400KHz) I2C serial bus. Many RTC modules are meant to operate at 5V. Unfortunately, the Raspberry Pi operates at 3.3V, that is where this handy module comes into play, it operates at 3.3V perfect for adding an RTC to your Raspberry Pi.

Features :

I2C Interface: High-speed (400KHz) I2C serial bus for communication with microcontrollers like Raspberry Pi and Arduino.
Battery Backup: Supports battery backup for continuous timing even in the absence of the main power source.
Compatibility: Designed to work with Raspberry Pi and Arduino.
Compact Design: The module's compact size (14x14x12 mm) allows for easy integration into various projects.
Low Power Consumption: Operates with low power consumption, suitable for battery-powered applications.
Output Signals: Provides a 1Hz output signal, which can be useful for applications requiring precise timing.
Self-Adjustment: Self-adjusts to work with both 3.3V and 5V systems, making it compatible with a wide range of microcontrollers and single-board computers.