Description:
This high-precision Real-Time Clock (RTC) module is built around the robust SD3031 integrated circuit, designed for applications demanding accurate and stable timekeeping. The chip's integrated crystal oscillator and temperature compensation circuitry ensure minimal drift, achieving an impressive accuracy of ±3.8 parts per million (ppm), translating to approximately ±0.32832 seconds per day at a standard temperature of 25 °C. This exceptional accuracy makes it ideal for time-sensitive applications where reliability is paramount.
To maintain timekeeping even during main power outages, the module supports battery backup via a button-cell battery. This feature guarantees continuous operation, preventing data loss and ensuring consistent time tracking. The RTC diligently records time in seconds, minutes, hours, days of the week, dates of the month, months, and years. Furthermore, it incorporates an automatic calendar function, seamlessly adjusting for varying month lengths and accurately accounting for leap years, simplifying data management.
Beyond its core timekeeping capabilities, the SD3031 includes a 70-byte Static Random-Access Memory (SRAM). This low-power memory allows for the storage of critical data, settings, or other small data sets, enhancing the module's versatility.
Important Note Regarding Battery Shipping: Due to stringent international air cargo regulations concerning the transportation of specific items, including batteries, this RTC module will be shipped without a battery. Customers are required to purchase a CR1220 button-cell battery locally to enable the battery backup functionality. We apologize for any inconvenience this may cause and appreciate your understanding of these regulatory constraints.
Specifications:
- 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/0.89x0.83
Features:
- Operates at just 1.8µA on battery, maximizing runtime.
- Precise timing with ±3.8ppm accuracy at 25°C.
- Integrated compensator minimizes time drift.
- Allows for real-time battery status checks.
- Includes 70 bytes of built-in, low-power data storage.
Applications:
- Event Reminder
- Countdown Devices
- MCU External Wake-up Source
- Clock & Alarm Output
- IoT Data Collection & Storage
Documents:
Package Included:
1 x DFRobot Fermion: SD3031 Precision RTC Module for Arduino (Breakout)
