DS1302 Real Time Clock Module

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The DS1302 based Real Time Clock Module can be used with Arduino or any other micro-controllers for timekeeping. read more
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1 review

36 in stock

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The DS1302 based Real-Time Clock Module can be used with Arduino or any other micro-controllers for timekeeping. The DS1302 is designed to operate on very low power and retain data and clock information on less than 1uW. It communicates with a microprocessor via a simple serial interface.

The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year.

The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.

**Battery NOT Included**



  • Material: PVC sheet
  • Size: 43mm x 23mm x 10mm



  • Ability to calculate seconds, minutes, hours, days, weeks, months, and years before 2100, as well as the ability, to adjust for leap years.
  • 31 8-bit temporary data storage RAM
  • Serial I/O port mode minimizes the number of pins
  • A wide range of operating voltage 2.0, 5.5V
  • Working current 2.0V, less than 300nA
  • There are two transfer methods for single-byte transfers and multi-byte transfer bursts when reading or writing clock or RAM data
  • 8-Pin DIP Package or Optional 8-Pin SOIC Package Based on Surface Mount
  • Simple 3-wire interface
  • Compatible with TTL Vcc=5V
  • Dual power supply for main and backup power supplies



  • 1 * DS1302 Real Time Clock Module

Reviews (1)

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  • (verified owner)

    Navroz Sethna (verified owner)

    I recently purchased a DS1302 Real Time Clock module from the Phipps Electronics eBay store. The delivery was fast and the product arrived in perfect condition. I managed to get the DS1302 to work properly by writing some software for it in the Arduino IDE. I discovered that the wires with the Dupont female connectors gave a very poor contact and caused my RTC module to give out garbage readings. I then plugged my RTC module directly into a breadboard and it worked perfectly every time!


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