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Attention! The product has been discontinued. Check other products in category. |
Product description: RTC DS3231M MEMS - RTC real-time clock - DFRobot DFR0641
DS3231M precision real-time clock modulewithMEMS resonator and temperature compensator. The module is powered by a CR1220 battery. For communication it uses I2C interface. The board is powered from 3.3V to 5.5 V.It allows toread the time in the form of hour, minute and second and date: month, day, year.
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Product compatible with Arduino The manufacturer prepared auser guide andlibrary for Arduino users. |
The module includes a goldpin strip for self-soldering.
RTC DS3231M module outputs
The DS3231M RTC board uses an I2C interface to communicate with the microcontroller. The module is powered from 3.3 V to 5.5 V. The leads are holes for connecting cables or goldpin solder, 2.54 mm raster (included).
The leads are located on the board.
| Pin | Symbol | Description |
|---|---|---|
| 1 | VCC | Supply voltage from 3.3 V to 5.5 V. |
| 2 | GND | The weight of the system. |
| 3 | SCL | Clock line I2C. |
| 4 | SDA | I2C data line. |
| 5 | INT | Pin low breaking pin or 1 Hz square-wave output. |
| 6 | RST | Calibration reset pin. |
| 7 | 32K | Pulse output 32.768 kHz. |
RTC DS3231M specifications
- Operating voltage: 3.3 V to 5.5 V
- Communication: I2C
- I2C address: 0x68
- Time range: 1970 to 2100.
- Operating temperature: from -40°C to 85°C
- Accuracy: ± 5ppm (± 0.432 s/D)
- Dimensions: 22.5 x 21 mm
Useful links |
