Description :
The DS3231 AT24C32 RTC (Real Time Clock) Module is a highly accurate and reliable timekeeping solution designed for Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontroller-based projects. Built around the DS3231 high-precision RTC chip, this module maintains accurate time, date, day, month, and year information even when the main power supply is disconnected.
Unlike traditional RTC modules, the DS3231 features a built-in temperature-compensated crystal oscillator (TCXO), which significantly improves timing accuracy and minimizes drift caused by temperature changes. The module also includes an AT24C32 32Kb EEPROM memory chip, allowing users to store configuration settings, logs, and other important data.
Communication is handled through the I2C interface, requiring only two signal wires, making integration simple and efficient. With support for a backup battery (CR2032), the module continues to keep time during power outages, ensuring reliable operation in data loggers, clocks, automation systems, IoT devices, and embedded applications.
The DS3231 RTC module is widely used in projects requiring precise scheduling, timestamp recording, alarm functions, and real-time monitoring.
Specifications :
| Specification | Details |
|---|---|
| Product Type | Real Time Clock (RTC) Module |
| RTC IC | DS3231 |
| Memory IC | AT24C32 EEPROM |
| EEPROM Capacity | 32Kb (4096 Bytes) |
| Interface | I2C (Two-Wire Serial Interface) |
| Operating Voltage | 3.3V – 5.5V DC |
| Timekeeping Accuracy | ±2 ppm (0°C to +40°C) |
| RTC Features | Seconds, Minutes, Hours, Day, Date, Month, Year |
| Calendar Support | Automatic Leap Year Compensation |
| Oscillator Type | Temperature-Compensated Crystal Oscillator (TCXO) |
| Alarm Functions | 2 Programmable Alarms |
| Square Wave Output | 1Hz, 1.024kHz, 4.096kHz, 8.192kHz |
| Backup Battery Support | CR2032 Coin Cell (Not Included) |
| Data Retention | Maintains Time During Power Loss |
| Communication Protocol | I2C |
| I2C Address (DS3231) | 0x68 |
| I2C Address (AT24C32) | 0x57 |
| Operating Temperature | -40°C to +85°C |
| Module Dimensions | Approx. 38 × 22 × 14 mm |
| Mounting Type | Through-Hole PCB Module |
| Compatible Boards | Arduino, ESP32, ESP8266, Raspberry Pi, STM32, AVR, PIC |
| Applications | Clocks, Data Loggers, IoT Devices, Automation Systems |
Features :
- High-precision DS3231 Real Time Clock IC for accurate timekeeping.
- Built-in temperature-compensated crystal oscillator (TCXO) for minimal time drift.
- Integrated AT24C32 EEPROM memory for non-volatile data storage.
- Maintains accurate time even during power failures using a backup battery.
- Supports seconds, minutes, hours, day, date, month, and year tracking.
- Automatic adjustment for months with fewer than 31 days.
- Built-in leap year compensation valid up to 2100.
- Simple I2C communication interface requiring only two signal lines.
- Compatible with both 3.3V and 5V microcontrollers.
- Features two programmable alarm functions.
- Supports interrupt and alarm output capabilities.
- Provides configurable square-wave frequency output.
- Excellent long-term stability and reliability.
- Low power consumption for battery-operated projects.
- Easy integration with Arduino IDE and Raspberry Pi libraries.
- Compact PCB design suitable for embedded systems.
- Ideal for timestamping and event logging applications.
- Perfect for digital clocks and calendar projects.
- Suitable for IoT and smart home automation systems.
- Reliable operation across a wide temperature range.
- Fast and stable I2C communication.
- Supports real-time scheduling applications.
- Widely used in industrial and educational projects.
- Durable PCB construction with quality components.
- Plug-and-play module for rapid prototyping.
Package Included:
1X DS3231 AT24C32 Precision RTC Real Time Clock Module I2C Memory Board for Arduino, ESP32 & Raspberry Pi
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