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Fermion: DS3231 Precise RTC - module with RTC DS3231 clock

Module with a precise real time clock (RTC) DS3231. It has an integrated crystal resonator and communicates via the I2C interface. DFRobot DFR0819

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ID: 586848

10,78€ gross (23% VAT)
8,77€ net

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Module with a precise real time clock (RTC) DS3231, which integrates a quartz resonator and a temperature compensator, which improves the long-term accuracy of the module. From -40°C to 85°C, the DS3231 accuracy remains at ± 3.5ppm (± 0.3024 seconds/day). The clock counts seconds, minutes, hours, day of the month, month, day of the week and year with leap year compensation. It can operate in a 24-hour or 12-hour format with an AM/PM indicator and has two built-in programmable alarms. There is a CR1220 battery socket on the board. It is powered with the voltage from 3.3 V to 5.5 V, and communication takes place via the I2C interface. Full documentation is available on the product Wiki page.


  • Internal integrated quartz resonator, small deviation
  • Internal integrated temperature compensator, low temperature drift
  • Full calendar function
  • Two programmable alarms
  • CR1220 socket
  • Supply voltage: 3.3 V to 5.5 V
  • I2C interface
  • I2C address: 0x68
  • Time range: 1970 to 2100
  • Working temperature: -40 ℃ to + 85 ℃
  • Timing accuracy: ± 3.5 ppm (± 0.3024 seconds/day)
  • Dimensions: 22.5 x 21mm

Kit contains

  • Fermion: DS3231 Precise RTC
  • 7-pin goldpin connector