10-Pack DS3231 RTC Module, I2C, with AT24C32 EEPROM

Key features

• 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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