DS3231 RTC Module AT24C32 IIC Precision Clock & Memory
DS3231 RTC Module AT24C32 IIC Precision Clock & Memory
DS3231 Precision Real-Time Clock Module with AT24C32 IIC Memory
Keep your Arduino, Raspberry Pi, or microcontroller projects perfectly on schedule with this DS3231 RTC (Real-Time Clock) Module. Featuring the industry-trusted DS3231 chip paired with AT24C32 EEPROM memory over an IIC (I²C) interface, this compact SMD module delivers exceptional timekeeping accuracy — even during power interruptions. Available with or without a backup CR2032 battery to suit your exact project needs.
Made in Mainland China.
Key Features
- High-Precision Timekeeping: The DS3231 chip uses a temperature-compensated crystal oscillator (TCXO) for extremely accurate time tracking across varying temperatures.
- AT24C32 EEPROM Memory: 32K bits of non-volatile memory for storing data that persists through power cycles — ideal for logging and configuration storage.
- IIC / I²C Interface: Simple two-wire communication makes integration with Arduino, Raspberry Pi, ESP8266/ESP32, and other microcontrollers effortless.
- Battery Backup Support: Optional onboard CR2032 coin cell battery holder keeps the clock running even when main power is disconnected.
- Compact SMD Package: Small form factor fits neatly into tight enclosures and breadboard setups.
- Two Variants Available: Choose the version with a pre-installed battery or the module only — perfect for sourcing exactly what your project requires.
- Wide Compatibility: Works seamlessly with popular platforms including Arduino UNO, Nano, Mega, Raspberry Pi, STM32, and more.
Specifications
- Chip: DS3231 + AT24C32
- Interface: IIC / I²C
- Memory: 32K-bit EEPROM (AT24C32)
- Package Type: SMD
- Condition: New
- Quantity: 1 Module
- Origin: Mainland China
What's in the Box
- 1 × DS3231 AT24C32 IIC RTC Module (with or without battery, as selected)
Great for Projects Like
- Arduino & Raspberry Pi clocks and timers
- Data loggers with timestamping
- Automated scheduling systems
- IoT sensor nodes requiring accurate time references
- EEPROM data storage experiments
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Frequently Asked Questions
Q: What is the difference between the DS3231 module with battery and without battery?
A: The version with a battery includes a pre-installed CR2032 coin cell that keeps the DS3231 real-time clock running even when the main power supply is disconnected. The version without a battery is the bare module — ideal if you already have a battery on hand or plan to power the RTC continuously from your main circuit.
Q: Is the DS3231 AT24C32 IIC module compatible with Arduino and Raspberry Pi?
A: Yes! The DS3231 module uses a standard I²C (IIC) two-wire interface, making it fully compatible with Arduino UNO, Nano, Mega, Raspberry Pi (all models), ESP8266, ESP32, STM32, and virtually any microcontroller that supports I²C communication. Numerous open-source libraries are available for quick integration.
Q: What can I store in the AT24C32 EEPROM memory on this module?
A: The AT24C32 provides 32K bits (4KB) of non-volatile EEPROM storage, also accessible over the I²C bus. You can use it to save configuration settings, calibration data, event logs, or any small dataset that needs to persist after power is removed from your project.