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  • RTC - DS3234 Breakout
    • i i
    • images/l/Geeetech_DS3234_1.jpg images/l/Geeetech_DS3234_1.jpg
    • images/l/Geeetech_DS3234_2.jpg images/l/Geeetech_DS3234_2.jpg
    • images/l/Geeetech_DS3234_3.jpg images/l/Geeetech_DS3234_3.jpg
RTC - DS3234 Breakout


Shipping Weight:50g

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Here listing is a RTC (Real Time Clock) based on the DS3234. It is a low-cost, extremely accurate SPI bus real-time clock with an integrated temperature-compensated crystal oscillator and crystal.

The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections of leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided.



+-2ppm accuracy

Two alarms

SPI output

Low power consumption

Accurate calendar up to year 2100

Battery backup included

dimentions: 20x25x5mm

For more information, please kindly visit our wiki page



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  • Peter McKinney | 02/28/2015

    Hi there, is it possible to get schematic for connecting this to an arduino uno?

    • Harry Chen | 03/01/2015

      Hi, here is the "usage" in wiki page http://www.geeetech.com/wiki/index.php/DS3234_Real-Time_Clock_Module

  • Bonnie Noel | 12/05/2013

    What kind of lithium battery fits? CR1216 or CR1220?