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DS1302 Real Time Clock Module with Cell


The DS1302 real-time clock (RTC) works very much like a watch. The RTC module accurately keeps time with a precise oscillator and is maintained with a small battery . It is used to give an accurate date and time in many applications.

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The DS1302 Real Time Clock Module, equipped with a built-in rechargeable cell, is a highly regarded component in the realm of electronics. Its popularity stems from several key features. First and foremost, its remarkable timekeeping accuracy, thanks to precision engineering, makes it a sought-after choice for applications where precise timing is imperative. Additionally, the inclusion of a rechargeable cell is crucial because it ensures uninterrupted operation during power outages or interruptions, thus safeguarding valuable timekeeping data.

Its versatile operating voltage range, spanning from 2.0V to 5.5V, provides flexibility, making it suitable for a wide array of electronic setups. Serial communication support simplifies integration, rendering it an ideal choice for projects requiring synchronized timekeeping. The module’s ability to accommodate both 12-hour and 24-hour time formats caters to diverse application needs. Moreover, its built-in trickle charger functionality is beneficial because it maintains the rechargeable cell in optimal condition, enhancing overall reliability. Consequently, this DS1302 module is a versatile and dependable choice for precision timekeeping in clock displays, data logging systems, timed control applications, and security systems.


  • Accuracy and Precision: The DS1302 boasts exceptional accuracy and precision in timekeeping, ensuring reliable and consistent performance over extended periods.
  • Rechargeable Cell: This module features a built-in rechargeable cell that provides power backup, safeguarding against data loss during power interruptions.
  • Operating Voltage Range: With an operating voltage range spanning from 2.0V to 5.5V, the DS1302 offers flexibility in various electronic setups.
  • Serial Communication: It supports serial communication through a simple three-wire interface, enhancing ease of integration with microcontrollers.
  • Time Format: The DS1302 supports both 12-hour and 24-hour time formats, accommodating different application requirements.
  • Trickle Charger: The built-in trickle charger ensures the rechargeable cell remains at optimal capacity, guaranteeing extended functionality.


    • Clock Displays: The DS1302 is widely employed in digital clock displays, ensuring accurate timekeeping for various time-sensitive applications.
    • Data Logging: It finds extensive use in data logging systems, allowing for timestamping data entries with precision.
    • Timed Control Systems: This module is essential in timed control systems, such as irrigation controllers, to manage schedules efficiently.
    • Security Systems: In security systems, the DS1302 plays a critical role in synchronizing events and maintaining accurate timestamps for security footage.
    • IoT Devices: It is a valuable component in Internet of Things (IoT) devices, aiding in synchronized data reporting and time-sensitive IoT applications.
    • Automotive Electronics: Automotive electronics use the DS1302 for timekeeping, enabling features like vehicle event logging and maintenance scheduling.
    • Consumer Electronics: It’s utilized in consumer electronics like digital cameras and handheld devices, ensuring accurate time and date information.


Crystal 32.768KHz, matching capacitance 6pF
DS1302 8-pin SMD homemade chips
Seconds, Minutes, Hours, Day of Month, Day of Week, and Year
Operating temperature: 0 degree ? 70 degree

Packages includes:-

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Weight 0.2 kg


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