Clock Module SHUATI DS3231 AT24C32 5pcs 3.3-5.5V IIC RTC Memory Board

Description

Product Overview

The SHUATI Clock Module is a versatile timing solution designed for developers, hobbyists, and engineers who need reliable real‑time clock (RTC) functionality combined with non‑volatile memory in a single compact package. At the heart of the module lies the DS3231 chip, a temperature‑compensated crystal oscillator (TCXO) that delivers timekeeping accuracy within one minute per year, even across a wide operating voltage range of 3.3 V to 5.5 V. Complementing the RTC is the AT24C32 EEPROM, offering 32 KB of storage that can be accessed via the standard I²C bus at speeds up to 400 kHz. The module also includes a rechargeable LIR2032 lithium‑ion battery, ensuring that the clock continues to run when the main power source is removed. Its dimensions—38 mm × 22 mm × 14 mm—and lightweight construction (8 g) make it easy to integrate into tight spaces, while the 5‑piece kit provides flexibility for multi‑board projects or redundant designs.

Usage

Designed for a broad range of applications, the SHUATI Clock Module fits seamlessly into Arduino, Raspberry Pi, ESP32, and other microcontroller ecosystems that support I²C communication. Whether you are building a data logger that timestamps sensor readings, a home automation system that requires scheduled events, or an industrial controller that must maintain accurate time across power cycles, this module delivers the precision and reliability needed for mission‑critical tasks. The dual‑alarm feature of the DS3231 allows you to set two independent alarms, enabling complex scheduling such as wake‑up alerts and periodic maintenance reminders. The programmable square‑wave output can be used to generate precise timing pulses for motor control, PWM generation, or as a clock source for other peripherals. Because the module operates from 3.3 V to 5.5 V, it can be powered directly from most development boards without additional level‑shifting circuitry, simplifying wiring and reducing overall system cost.

Why Choose Us

Choosing the SHUATI Clock Module means selecting a product backed by rigorous quality control and a commitment to long‑term support. Each unit undergoes comprehensive testing for voltage tolerance, temperature stability, and battery endurance, ensuring that you receive a component that meets industrial standards. The module’s robust PCB layout includes protective grounding and anti‑ESD measures, reducing the risk of damage during handling or installation. In addition, SHUATI provides detailed documentation, including wiring diagrams, example code for popular platforms, and a responsive technical support team ready to assist with integration challenges. Our after‑sales service includes firmware updates for the EEPROM driver and a warranty that covers manufacturing defects for 12 months, giving you confidence that your investment will perform reliably throughout the product lifecycle.

Key Features

• High‑precision DS3231 RTC with temperature compensation for year‑long accuracy
• 32 KB AT24C32 EEPROM provides ample non‑volatile storage for configuration data
• Rechargeable LIR2032 battery ensures continuous timekeeping during power loss
• Wide operating voltage range (3.3‑5.5 V) enables direct connection to most microcontrollers
• Responsive technical support and 12‑month warranty for peace of mind

FAQ

What voltage does the module require?

The module operates safely from 3.3 V up to 5.5 V, making it compatible with both 3.3 V and 5 V logic levels commonly found on development boards.

How does the built‑in battery affect performance?

The LIR2032 battery maintains the RTC clock when the main power is removed, preserving date and time information without any additional circuitry. The battery is rechargeable and can be replaced if needed.

Can I use the module with Raspberry Pi?

Yes. The module communicates via the I²C bus, which is supported on the Raspberry Pi’s GPIO header. Simple Python libraries are available to read and set time, alarms, and EEPROM data.

Is the EEPROM data retained after a power outage?

Absolutely. The AT24C32 EEPROM stores data non‑volatilely, so any configuration or logged information remains intact even if power is lost for an extended period.

What is the maximum I²C speed supported?

The module supports I²C clock speeds up to 400 kHz (Fast‑mode), allowing rapid data transfers while maintaining reliable communication.