Description:
DS3231 RTC Memory Module Precise Real Time Clock I2C-AT24C32
The DS3231 RTC Memory Module with I2C interface and integrated AT24C32 offers a low-cost, highly accurate real-time clock (RTC) solution. Equipped with a temperature-compensated crystal oscillator (TCXO) and a crystal, this module ensures precise timekeeping and improves long-term accuracy by minimizing component count during production.
This RTC module keeps track of seconds, minutes, hours, days, dates, months, and years. It automatically adjusts for months with fewer than 31 days and accounts for leap years. The clock can operate in either 24-hour format or 12-hour format with AM/PM indication. It also features two configurable alarm clocks and a calendar with a square wave output. Data is transferred via a bidirectional I2C bus, providing efficient communication with the system.
The DS3231 includes a precision temperature-compensated voltage reference and comparator circuit that monitors the VCC status, detecting power failures and triggering a reset output if necessary. It can also automatically switch to backup power in the event of a failure. Additionally, a /RST pin allows for manual reset generation.
In terms of additional functionality, the DS3231 incorporates a highly accurate digital temperature sensor, accessible via the same I2C interface. The temperature sensor has an accuracy of ±3°C. The module also features an on-chip power supply control circuit, which manages both primary and backup power sources (such as a low-voltage battery). If the main power fails, the device continues to provide accurate time and temperature data without interruption. When the main power returns or reaches the proper voltage range, the built-in reset function ensures a smooth system restart.
Connection Diagram:
Wiring Specification:
- SCL : A5
- SDA : A4
- VCC : 5V
- GND : GND
Features:
- Two Time-of-Day Alarms.
- Digital Temp Sensor Output.
- Register for Aging Trim.
- DS3231 RTC with 2032 Battery Holder.
- Highly Accurate RTC Completely Manages All Timekeeping Functions.
- Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year, with Leap-Year Compensation Valid Up to 2100.
- Configurable I2C device Address for AT24C02 using SMD jumpers on PCB (A0, A1, A2).
- Programmable Square-Wave Output Signal.
- Battery-Backup Input for Continuous Timekeeping.
- Low Power Operation Extends Battery-Backup Run Time.
Specification :
- Voltage Supply: 2.2 V ~ 5.5 V (for RTC).
- Time Format: HH: MM: SS (12/24 hr).
- 1 Hz output pin SQW.
- Date Format: YY-MM-DD-dd.
- DS 3231 based RTC with 2032 Battery Holder.
Package Includes:
- 1 x DS3231 RTC Memory Module
Datasheet:
Tutorial:
Note: Battery is not included with module.
Technical Specifications
| Model | DS3231 |
|---|---|
| Interface / Protocol | I2C |
| SKU | AI0379 |
| Weight | 0.01 kg |
| Availability | Out of Stock |
Applications & Use Cases
The DS3231 RTC Memory Module Precise Real Time Clock I2C-AT24C32 is a versatile rtc module used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
- Integrating into a custom electronics project
- Learning and experimenting with circuits
- Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components


Sachin Singh (verified owner) –
Great quality DS3231 RTC Memory Module Precise Real. Fast delivery from Zbotic. Highly recommended.
Rohit Agarwal (verified owner) –
Excellent product! My college project is a success thanks to this DS3231 RTC Memory Module Precise Real from Zbotic.
Kritika Bose (verified owner) –
Excellent DS3231 RTC Memory Module Precise Real! Works perfectly as described. Very happy with this purchase.
Naveen Pillai –
Good DS3231 RTC Memory Module Precise Real. Using it in my project. Minor issues but overall happy.
Aditya Trivedi –
Very impressed with the quality of this DS3231 RTC Memory Module Precise Real. Will definitely order again.
M M ANSARI SKILLOVATION TECHNOLOGIES (verified owner) –
good
Mohit Negi (verified owner) –
This DS3231 RTC Memory Module Precise Real is exactly what I needed for my project. Top notch quality.
Piyush Thakur –
Average DS3231 RTC Memory Module Precise Real. Works but quality could be slightly better.
Aarav Malhotra –
Perfect DS3231 RTC Memory Module Precise Real. Works as expected. Packaging was secure and product arrived safely.
Pallavi Ghosh (verified owner) –
Good DS3231 RTC Memory Module Precise Real. Works as described. Packaging could be improved slightly.
Ankit Khurana (verified owner) –
Decent quality DS3231 RTC Memory Module Precise Real. Delivered on time. Satisfied with the purchase.
Krishna Reddy Mittapalli (verified owner) –
Tanya Saxena (verified owner) –
Love this DS3231 RTC Memory Module Precise Real. Build quality is excellent. Will order more from Zbotic.
Vandana Mohan (verified owner) –
Anshuman Karmakar (verified owner) –
Tech Projector (verified owner) –
Anshuman Mishra (verified owner) –
Pankaj Dubey (verified owner) –
Bought this DS3231 RTC Memory Module Precise Real after researching many options. Best decision! Works flawlessly.
Yogesh Desai (verified owner) –
Kartik Panchal –
Nice DS3231 RTC Memory Module Precise Real. Does the job well. Good value for money.
Isha Goyal (verified owner) –
This DS3231 RTC Memory Module Precise Real is perfect for hobbyists and students. Great quality components.
Ausaf Momin (verified owner) –
Yashwant Krishnan (verified owner) –
Okay DS3231 RTC Memory Module Precise Real. Functional but not outstanding. Serves its purpose.