Description
The DS3231 RTC module is a highly accurate, low-cost I2C real time clock featuring an integrated temperature compensated crystal oscillator (TCXO) and crystal for precise timekeeping.
Perfect for Arduino, ARM, PIC, Raspberry Pi, and other microcontroller projects that require reliable clock functionality.
The module includes a battery backup input (battery not included) that maintains accurate time even when the main power is disconnected.
Its integrated oscillator improves long term accuracy and reduces component count, making it ideal for compact embedded systems.
- Operating Voltage: 3.3V to 5.5V
- High precision DS3231 clock chip with ±2ppm accuracy (0–40°C)
- Real-time clock tracks seconds, minutes, hours, day, date, month, and year
- Automatic month-end date adjustment and leap year compensation until 2100
- 12-hour (AM/PM) or 24-hour time format support
- Two programmable alarms and programmable square wave output
- On-chip temperature sensor with ±3°C accuracy
- Battery backup input to keep time during power loss (battery not included)
- I2C communication interface supporting up to 400kHz bus speed
- Includes AT24C32 EEPROM chip with 32KB memory for data storage
- Can cascade with other I2C devices with configurable addresses
- Compact dimensions: 38mm (L) x 22mm (W) x 14mm (H)
- Additional Details:
- Integrated voltage reference and comparator circuits monitor power supply
- Automatic switching between main and backup power to ensure uninterrupted timekeeping
- Reset output and manual reset input (RST pin) for microprocessor control
What’s Included:
- 1 x DS3231 RTC I2C Module with AT24C32 EEPROM (battery not included)
Perfect For:
- Timekeeping in microcontroller projects: Arduino, ARM, PIC, Raspberry Pi
- Data logging with persistent time and data storage
- Alarm clocks, timers, and time-based automation
- Embedded systems requiring reliable and accurate real-time clock
Usage Tips:
- Use a CR2032 coin cell battery for backup power (not included)
- Connect SDA and SCL pins to your microcontroller’s I2C interface
- Use compatible libraries for easy programming and integration
- Avoid voltages above 5.5V to protect the module
