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Fermion SD3031 Precision RTC Module for Arduino

25-00016136
DFR0998
CompanyDFRobot Part NumberDFR0998
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€640
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This real-time clock (RTC) module uses the SD3031 chip, which has an integrated crystal oscillator and temperature compensator. This provides high-precision timing and stability. At a temperature of 25 °C, the accuracy is maintained at ±3.8ppm (±0.32832 seconds/day).

The SD3031 can be powered by button-cell batteries. This allows for accurate timing even when the main power source is interrupted. The RTC keeps track of seconds, minutes, hours, days of the week, dates of the month, and months and years. It also automatically adjusts the date at the end of each month and includes leap year corrections. The SD3031 has a built-in 70-byte SRAM for low-power data storage.

Please note that due to recent air cargo regulations, special items such as batteries, magnets, and liquids are strictly audited for air transport. As a result, the RTC module does not come with batteries. You will need to purchase them locally. The button cell model that is compatible with this module is the CR1220.

NOTES

  • According to the latest Air Transport Regulations, the batteries, magnets, and liquids transport will be very stringent, so the cell battery CR1220 will not come with the module anymore. Please buy it from here.

Wiring diagram of Fermion: SD3031 Precision RTC Module and Arduino Uno

  • Supply Voltage: 3.3V
  • I2C Address: 0x32
  • SRAM: 70 Byte (0x2C-0x71)
  • Timing Year Range: 2000 - 2099
  • Operating Temperature: -10℃ to +70℃
  • Timing Accuracy: ±3.8ppm @ 25℃
  • Dimension: 22.5x21mm

  • Low power consumption, operating current of only 1.8µA when powered by button cell battery
  • High precision, ±3.8ppm@25℃
  • Integrated temperature compensator, small temperature drift
  • Readable button cell voltage
  • Built-in 70Byte SRAM

Applications

  • Event Reminder
  • Countdown Devices
  • MCU External Wake-up Source
  • Clock & Alarm Output
  • IoT Data Collection & Storage
Warranty
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Company
DFRobot
Gross Weight
0.02kg
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