hiBCTR 10 Packs DS3231 RTC Module High Precision I2C Real Time Clock with AT24C32 EEPROM Memory for Arduino Raspberry Pi Data Logging (Battery Not Included)
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- HIGH-PRECISION TIMEKEEPING: Features the DS3231 high-precision clock chip, providing an extremely accurate time reference with an error of only 2ppm within a 0-40°C range. The module maintains a full clock calendar function, generating seconds, minutes, hours, day, date, month, and year information, complete with leap-year compensation valid up to the year 2100.
- INTEGRATED EEPROM MEMORY: Equipped with an onboard AT24C32 memory chip, this module provides 32K of non-volatile storage. This is ideal for data logging applications, storing user configurations, or buffering sensor data without requiring additional components, all accessible via the same I2C bus.
- BROAD MICROCONTROLLER COMPATIBILITY: Designed for seamless integration with a wide range of development platforms, including popular AVR microcontroller boards and single-board computers. The standard IIC bus interface simplifies wiring and communication, with extensive library support available for quick and easy programming.
- VERSATILE OUTPUTS AND ONBOARD SENSOR: Includes a programmable square-wave output and an internal temperature sensor with an accuracy of ±3°C, adding extra functionality to your projects. IMPORTANT NOTE: This board has a built-in charging circuit. For safe use with standard non-rechargeable coin cell batteries, the charging resistor or diode must be desoldered from the board.
- CASCADABLE I2C ADDRESSING: The I2C address of the AT24C32 EEPROM can be modified by shorting the A0/A1/A2 pads, allowing multiple modules or other I2C devices to be cascaded on the same bus without address conflicts. The default address is 0x57. We provide comprehensive after-sales support: complete digital documentation including user guides and technical references is available through our store customer service, and our support team is ready to assist with installation, programming, and troubleshooting to help you get started quickly.
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- HIGH-PRECISION TIMEKEEPING: Features the DS3231 high-precision clock chip, providing an extremely accurate time reference with an error of only 2ppm within a 0-40°C range. The module maintains a full clock calendar function, generating seconds, minutes, hours, day, date, month, and year information, complete with leap-year compensation valid up to the year 2100.
- INTEGRATED EEPROM MEMORY: Equipped with an onboard AT24C32 memory chip, this module provides 32K of non-volatile storage. This is ideal for data logging applications, storing user configurations, or buffering sensor data without requiring additional components, all accessible via the same I2C bus.
- BROAD MICROCONTROLLER COMPATIBILITY: Designed for seamless integration with a wide range of development platforms, including popular AVR microcontroller boards and single-board computers. The standard IIC bus interface simplifies wiring and communication, with extensive library support available for quick and easy programming.
- VERSATILE OUTPUTS AND ONBOARD SENSOR: Includes a programmable square-wave output and an internal temperature sensor with an accuracy of ±3°C, adding extra functionality to your projects. IMPORTANT NOTE: This board has a built-in charging circuit. For safe use with standard non-rechargeable coin cell batteries, the charging resistor or diode must be desoldered from the board.
- CASCADABLE I2C ADDRESSING: The I2C address of the AT24C32 EEPROM can be modified by shorting the A0/A1/A2 pads, allowing multiple modules or other I2C devices to be cascaded on the same bus without address conflicts. The default address is 0x57. We provide comprehensive after-sales support: complete digital documentation including user guides and technical references is available through our store customer service, and our support team is ready to assist with installation, programming, and troubleshooting to help you get started quickly.
PACKAGE CONTENTS
1 x DS3231 RTC Module with AT24C32 EEPROM (Battery not included)
SPECIFICATIONS
- Clock Chip: DS3231
- Memory Chip: AT24C32
- Operating Voltage: 3.3V - 5.5V
- Dimensions: 38mm x 22mm x 14mm
- Weight: 8g
- Clock Accuracy: 2ppm (within 0-40°C)
- Temperature Sensor Accuracy: ±3°C
- Memory Capacity: 32K
- Communication Interface: IIC (I2C) Bus
- Maximum Transmission Speed: 400KHz (at 5V)
- I2C Default Address: 0x57 (address modifiable via A0/A1/A2)
USAGE INSTRUCTIONS
1. Connect the module to your microcontroller using the I2C pins: VCC to 3.3V or 5V, GND to GND, SCL to SCL, and SDA to SDA.
2. Carefully install a compatible coin cell battery (not included) into the holder to maintain time when main power is off.
3. For use with non-rechargeable batteries (e.g., CR2032), you MUST desolder the charging circuit's resistor/diode to prevent battery damage.
4. Install a suitable DS3231 library for your development environment (e.g., Arduino IDE).
5. Use an example sketch from the library to set the current time and date, then read it back to confirm functionality.
APPLICATION SCENARIOS
- Data Logging Systems: Keep accurate timestamps for environmental sensors, GPS modules, or industrial process monitoring.
- Home Automation: Create reliable timers and schedules for lighting, irrigation systems, or pet feeders that persist through power outages.
- Time-Stamping: Add precise time and date information to photos or videos in camera projects.
- Network-Independent Clocks: Build standalone alarm clocks, event timers, or time-based displays that do not rely on an internet connection for accuracy.
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