DS3231 Real Time Clock Module (No Battery)

DS3231 Real Time Clock Module is a highly accurate, temperature-compensated device designed for applications requiring precise timekeeping. Unlike conventional RTC modules that rely on low-accuracy crystals, the DS3231 integrates a built-in temperature-compensated crystal oscillator (TCXO), ensuring exceptional stability and minimal drift. Whether you are building data loggers, IoT systems, automation projects, or time-based control systems, this module offers reliable performance, low power consumption, and long-term accuracy.

Ideal for microcontrollers such as Arduino, Raspberry Pi, ESP32, ESP8266, STM32, PIC, and AVR, the DS3231 module is widely used in hobbyist projects, academic applications, and industrial automation. Its I²C communication interface ensures easy integration and minimal wiring, making it a top choice for beginners and professionals alike.

Key Features of DS3231 RTC Module

1. High Accuracy & Stability

The DS3231 provides clock precision of ±2 ppm, equivalent to a time drift of about ±1 minute per year. Its built-in TCXO automatically compensates for temperature variations, delivering consistent performance across a wide temperature range.

2. Onboard 32KHz Output

The integrated 32.768 kHz output frequency provides a stable timing reference for external microcontrollers and peripherals, enhancing project timing performance.

3. Battery-Backed Operation

Equipped with a CR2032 coin-cell battery holder, the module maintains accurate timekeeping even when the main power is lost. This feature is essential for real-time clocks in data loggers and offline applications.

4. I²C Interface for Easy Connectivity

The device communicates using a simple I²C protocol, requiring only two pins (SDA and SCL), making it easy to interface with popular development boards.

5. Supports Date & Time Functions

The module keeps track of:

• Seconds

• Minutes

• Hours (12/24-hour format)

• Day of the week

• Day

• Month

• Year (including leap year compensation up to 2100)

6. Additional EEPROM Memory

Many DS3231 modules include a 24C32 or 24C64 EEPROM chip, allowing users to store custom data such as logs, system configurations, or calibration data.

7. Wide Operating Voltage

The module can operate from 3.3V to 5V, making it compatible with most microcontroller systems.

Specifications of DS3231 RTC Module

• Operating Voltage: 3.3V – 5V

• Timekeeping Accuracy: ±2 ppm (approximately ±1 minute/year)

• Communication Interface: I²C (SDA, SCL)

• Operating Temperature Range: –40°C to +85°C

• Time Format: 12-hour with AM/PM or 24-hour

• Calendar Range: Year 2000–2100 (with leap-year correction)

• Battery Backup: Supports CR2032 battery

• 32 kHz Output: Available

• Additional Memory (optional): 24C32/24C64 EEPROM (4 KB / 8 KB)

• Dimensions: Compact, easy to mount on breadboards

• Power Consumption: Extremely low in backup mode

Applications of DS3231 RTC Module

1. Data Logging Systems

Perfect for recording timestamps in temperature logs, environmental monitoring, industrial data capture, and sensor-based projects.

2. IoT Devices

Ensures synchronized timekeeping for smart home devices, automation systems, and cloud-connected projects.

3. Embedded Systems

Useful in microcontroller-based designs that require accurate scheduling, alarms, or timed operations.

4. Real-Time Clocks in Consumer Electronics

Used in clocks, timers, digital calendars, and reminder devices.

5. Robotics

Robots requiring timed actions, motion scheduling, or periodic sensor activation benefit from precise RTC modules.

6. Home Automation

Supports lighting control, irrigation systems, appliance timers, and energy management systems.

7. Academic & DIY Projects

Popular among engineering students and hobbyists due to reliability, low cost, and ease of integration.

Why Choose the DS3231 RTC Module?

For anyone looking for a dependable and precision-based timing solution, the DS3231 Real Time Clock Module stands out for its high accuracy, battery-backed memory, easy interfacing, and robust design. It is the perfect component for any project that requires consistent and reliable timekeeping across long durations.

Package Includes:

1 x DS3231 Real Time Clock Module (No Battery)

FAQ

1. Where can we buy this DS3231 Real Time Clock Module?

This product is available online at https://aiiottech.in/product/ds3231-real-time-clock-module-no-battery/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this DS3231 Real Time Clock Module after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: Real Time Clock Tutorial