What is the AT24C256 I2C Interface EEPROM Memory Module used for?

The AT24C256 EEPROM Memory Module is commonly used for storing small amounts of data in embedded systems, especially with Arduino projects. It provides non-volatile storage, meaning the information is retained even when the power is off. This module is great for applications like data logging, configuration settings, or storing sensor readings, providing flexibility in your projects.

How does the I2C interface work with the AT24C256 module?

The AT24C256 uses the I2C (Inter-Integrated Circuit) protocol, which allows multiple devices to communicate on the same bus using only two wires, SDA for data and SCL for clock signals. This configuration simplifies wiring and enables daisy-chaining of multiple devices, making it ideal for Arduino applications where space and connections are limited.

What voltage range does the AT24C256 EEPROM operate at?

The AT24C256 operates within a voltage range of 1.7V to 5.5V, making it compatible with most microcontrollers including various Arduino boards. This broad voltage range allows for flexibility in project designs, accommodating different power source configurations. Always ensure your module is powered within this range for proper functionality.

Can the AT24C256 EEPROM store large data amounts?

Yes, the AT24C256 can store up to 32 kilobits of data, which translates to 4KB when using 8-bit bytes. While it's suitable for small to medium-sized data storage needs, for extensive databases or large files, consider breaking the data into smaller chunks or using multiple EEPROM modules in parallel for more collective storage.

Is the AT24C256 EEPROM module compatible with other microcontrollers?

Absolutely! While it's widely used with Arduino, the AT24C256 is also compatible with other microcontrollers that support the I2C protocol, such as Raspberry Pi, ESP8266, and PIC microcontrollers. This versatility makes it an essential component for various electronics projects across different platforms.

What are common applications of the AT24C256 module?

Common applications include data logging, storing configuration settings for electronic devices, and maintaining calibration data for sensors. It’s frequently used in projects that require data retention after power loss, such as weather stations, RFID readers, or any custom Arduino-based project where data persistence is crucial.

How do I connect the AT24C256 EEPROM to an Arduino?

To connect the AT24C256 to an Arduino, use the SDA and SCL pins on the Arduino and connect them to the corresponding pins on the EEPROM module. Additionally, ensure power and ground connections are made. Then, you'll use an I2C library in your Arduino code to communicate with the memory module, allowing you to read and write data effectively.

Is it necessary to use pull-up resistors with the AT24C256?

Yes, when using the I2C interface with the AT24C256, it's recommended to add pull-up resistors on the SDA and SCL lines. These resistors help ensure reliable communication by maintaining the lines at a high state. Typically, values between 4.7kΩ and 10kΩ are used, depending on the specific application and pull-up configuration.

What are the reading and writing speeds of the AT24C256?

The AT24C256 supports a maximum I2C clock frequency of up to 400 kHz, which allows for relatively fast read and write operations. While the time taken for a single byte can be as low as a few milliseconds, performance can vary based on the size of the data being written or read, as well as the number of operations performed consecutively.

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AT24C256 24C256 I2C Interface EEPROM Memory Module for arduino

Support AT24C256 series chips with all pins leads out and marked for easy integration.

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AT24C256 24C256 I2C Interface EEPROM Memory Module for arduino

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What Stands Out

High Capacity

The AT24C256 offers 256Kb of memory, allowing for extensive data storage in projects, making it ideal for applications requiring substantial amounts of data retention.

I2C Compatibility

This module features a simple I2C interface, ensuring easy integration with Arduino and other microcontrollers, streamlining development processes and reducing wiring complexity.

Low Power Consumption

Designed for energy efficiency, the AT24C256 operates with minimal power, making it suitable for battery-powered devices where longevity is crucial while maintaining performance.

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Brand	PartsNovar
Manufacturer	PartsNovar
Mfr Part Number	FJGNEWicmz-00248
Item Weight	0.1 lbs (50 grams)

Who Should Buy?

Developers & Hobbyists
Ideal for developers and hobbyists building projects that require non-volatile data storage with easy integration.
Educational Purposes
Suitable for students learning about I2C communication and EEPROM storage in embedded systems.
Prototype Testing
Useful for engineers needing to prototype and test designs that rely on data retention between power cycles.

High-Speed Applications
Not suitable for applications requiring high-speed data access or real-time performance due to I2C limitations.

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AT24C256 24C256 I2C Interface EEPROM Memory Module for arduino

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High storage capacity: 256KB
Fast I2C interface: 400 kHz
Low power consumption: 1mA max
Reliable for data retention
Easy integration with Arduino

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Compatible with AT24C256 series chips.
Includes a pin power supply and power indicator.
Features on-board pull-up resistor for I2C communication.
All pins are clearly marked for straightforward setup.
Direct jumper settings for address input and write-protect pin.
Compact PCB size of 36.5 mm x 12 mm for easy integration.

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AT24C256 24C256 I2C Interface EEPROM Memory Module for arduino

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