Product description: Fermion - module with real time clock RTC SD3031 - for Arduino - DFRobot DFR0998
High-precisionreal-time clock (RTC) module equipped with the SD3031 chip . It has an integrated quartz resonator and temperature compensator, which significantly improves the stability and accuracy of the module, and also ensures high precision of synchronization. The module is powered by a coin cell battery (not included), thanks to which it measures time also in the absence of power from another source. The RTC tracks seconds, minutes, hours, days of the week, months and years. It also automatically adjusts the date to the end of each month and includes leap year adjustments. The SD3031 has a built-in 70-byte SRAM for low-power data storage.
Arduino compatible product!
Also check the manufacturer's user guide .
Fermion - module with real time clock RTC SD3031 - for Arduino - DFRobot DFR0998.
High-precision real-time clock module from DFRobot.
Special features of the module
- Low power consumption, operating current of 1.8 µA when powered by a coin cell battery
- High working precision of ± 3.8 ppm at 25°C
- Integrated temperature compensator
- Built-in 70-byte SRAM
Suggested use
- Event reminder
- Countdown devices
- External MCU wake-up source
- Clock and alarm output
- IoT data collection and storage
Pin description
- VCC - power pin
- GND - system ground
- SCL - I2C data line
- SDA - I2C clock line
- INT - low level interrupt or 1 Hz square wave output
- NC - pin not connected
- 32K - 32.768 kHz pulse output
Example connection diagram. The DFRduino board must be purchased separately.
Components included in the set.
Module technical specification
- Supply voltage: 3.3V
- Communication interface: I2C bus
- I2C address: 0x32
- Year measurement range: from 2000 to 2099
- Operating environment temperature: -10°C to 70°C
- Timing accuracy: ±3.8 ppm at 25°C
- Product size: 22.5x21mm
Kit contents
- Fermion - module with RTC SD3031 real time clock - for Arduino - 1 piece
- Goldpin strip 1x7 pin - raster 2.54 mm - 1 piece
The set does not include CR1220 batteries . It must be purchased separately.
