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DS3231 RTC Module Precise Real Time Clock I2C – AT24C02
₹93.15 excl GST
Package Includes
1 × DS3231 RTC Module with AT24C32 EEPROM
(Battery not included)
Description:
The DS3231 IIC RTC Module is a cost-effective and highly precise real-time clock designed for accurate timekeeping in electronics and embedded systems. Powered by the Maxim DS3231 integrated chip, this module features a temperature-compensated crystal oscillator (TCXO) and crystal resonator, providing exceptional accuracy with minimal drift over time.
It includes a 32 Kbit AT24C32 EEPROM for non-volatile data storage and a 10-bit digital temperature sensor with 0.25 °C resolution. The DS3231 communicates via the I²C (two-wire) interface, making it easy to integrate with popular microcontrollers such as Arduino, ESP32, Raspberry Pi, STM32, and others.
The onboard CR2032 battery holder supports backup power functionality, ensuring the clock continues running even when the main power supply is off. However, this product is supplied without the battery, allowing users to add their own standard 3 V CR2032 coin cell if required.
Key Features
High-accuracy DS3231 RTC chip with built-in crystal oscillator
±2 ppm accuracy from 0 °C to +40 °C; ±3.5 ppm from –40 °C to +85 °C
Built-in 10-bit digital temperature sensor (±3 °C, 0.25 °C resolution)
Onboard AT24C32 (32 Kbit) EEPROM for additional data storage
Supports 12-hour or 24-hour time formats with AM/PM indicator
Two programmable alarms and square-wave output
I²C interface, address configurable via A0, A1, A2 jumpers
Aging trim register for fine frequency calibration
Backup power supported via CR2032 holder (battery not included)
Compatible with 3.3 V and 5 V logic systems
Low power consumption for extended battery life
Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 2.3 V – 5.5 V |
| Communication Interface | I²C (400 kHz Fast Mode) |
| EEPROM | AT24C32 (32 Kbit / 4 KB) |
| Temperature Sensor | 10-bit, ±3 °C accuracy, 0.25 °C resolution |
| Time Format | 12 / 24 hour |
| Alarms | Two programmable |
| Square-Wave Output | Programmable (1 Hz – 8 kHz) |
| Backup Battery Holder | CR2032 (3 V coin cell, not included) |
| Operating Temperature | –40 °C to +85 °C |
| Accuracy | ±2 ppm (0 °C – +40 °C), ±3.5 ppm (–40 °C – +85 °C) |
| Dimensions | 38 mm × 22 mm × 14 mm |
| Weight | 8 g |
Applications
Real-time clock for microcontroller and IoT projects
Time-stamped data logging systems
Embedded automation and scheduling systems
Alarms, timers, and power management circuits
Accurate timekeeping for Arduino and Raspberry Pi projects
Compatibility
Arduino Uno / Nano / Mega
ESP32 / ESP8266
Raspberry Pi / STM32 / AVR / PIC
Any microcontroller supporting I²C communication
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