DS3231 RTC Module Precise Real Time Clock I2C – AT24C02
The DS3231 RTC Module is a low-cost and highly accurate device that uses the DS3231 Chip Extremely Accurate I2C integrated chip from Maxim. It has a temperature-compensated crystal oscillator and an I2C interface for Real Time Clock (RTC) functionality. The module also has a CR2032 Battery Holder on the back, which provides battery backup and keeps the time accurate even when the main power source is disconnected.
The DS3231 RTC module is a device that keeps track of time in seconds, minutes, hours, day, date, month and year. It automatically adjusts the date at the end of each month, taking into account the months with fewer than 31 days and the leap years. It can work in either 24-hour or 12-hour mode, with an AM/PM indicator. It also has two programmable alarms and a square wave output that can be set. It uses an I2C bidirectional bus to send and receive address and data information.
Connection Diagram:
Features
RTC Counts seconds, minutes, hours, date of month, month, day of week, and year, with leap year compensation valid upto 2100
Accuracy 2 ppm from 0° C to +40° C
Accuracy 3.5 ppm from -40° C to +85° C
Digital Temp Sensor Output: ±3° C Accuracy
Memory Chips: AT24C02 (2Kbit)
Register for Aging Trim
RST Output/Pushbutton Reset Debounce Input
Two Time-of-Day Alarms
Programmable Square-Wave Output Signal
Fast 400 Khz I2C interface
Battery input from onboard battery holder
Low Power Operation
3.3V Operation
specification-
Operating Voltage (VDC)
2.7 ~ 5.5
Voltage Supply for RTC
2.2 V ~ 5.5 V
Accuracy
±2ppm from 0°C to +40°C., ±3.5ppm from -40°C to +85°C.
Battery Holder
2032 Coin Battery.
I2C interface
Fast (400kHz) I2C Interface.
EEPROM
AT24C32 32Kbit Serial I2C.
Time and Date Format
Time: HH: MM: SS (12/24 hr).
Date Format: YY-MM-DD-dd.
Operating Temperature Range (°C):
-40 to 85
Digital Temp Sensor Output
10 bit, ±3°C Accuracy and 0.25C resolution.
Dimensions in mm (LxWxH)
38 x 22 x 14
Weight(gm)
8
Shipping Weight
0.012 kg
Shipping Dimensions
12 × 8 × 5 cm
Package Includes
1 x DS3231 RTC Module Precise Real Time Clock I2C -AT24C02
The DS3231 RTC Module Precise Real Time Clock I2C - AT24C02 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
Weight
0.01 kg
15 Days Warranty
Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.
What voids warranty:
If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.
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Very satisfied with this DS3231 RTC Module Precise Real Time. My project is working perfectly now.
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Good DS3231 RTC Module Precise Real Time. Using it in my project. Minor issues but overall happy.
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This DS3231 RTC Module Precise Real Time is exactly what I needed for my project. Top notch quality.
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Perfect DS3231 RTC Module Precise Real Time. Works as expected. Packaging was secure and product arrived safely.
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Nice DS3231 RTC Module Precise Real Time. Does the job well. Good value for money.
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This DS3231 RTC Module Precise Real Time is reliable and well-made. Recommended for electronics enthusiasts.
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Good DS3231 RTC Module Precise Real Time. Works as described. Packaging could be improved slightly.
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Very satisfied with this DS3231 RTC Module Precise Real Time. My project is working perfectly now.
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Very impressed with the quality of this DS3231 RTC Module Precise Real Time. Will definitely order again.