# AT24C256 V2 EEPROM module, I2C

> AT24C256 V2 EEPROM module with I2C interface, used to expand memory in Arduino projects when the ATmega's internal EEPROM is not enough. Capacity 256Kbit (32KB), supply voltage 1.8-5V. Retains stored data even without power, and the AT24C256 chip can be replaced for maintenance or upgrade.

- Page: https://sigmanortec.ro/en/at24c256-v2-eeprom-module-i2c
- Price: 9.68 RON
- Availability: In stock; 1-2 zile
- Reference: 33352 · EAN: 5941638917733
- Category: Mechatronics and IoT > Sensors and Modules > Data Storage Module
- Package (shipping data): 0.004 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:25 (Europe/Bucharest)

## Description

Easily expands memory for Arduino projects, ideal when the EEPROM in the ATmega is no longer sufficient. Stores data permanently even without power, communicates quickly via I2C, offers 256Kbit 32KB capacity, operates at 1.8-5V and allows easy replacement of the AT24C256 chip for maintenance or upgrade.
EEPROM module with the advantage of the possibility to replace the AT24C256 chip.
Module used for data storage for Arduino. Since the ATmega chip has an EEPROM memory limit, this module is ideal for adding memory.
EEPROM (electrically erasable programmable read-only memory) has the advantage that, once programmed, it retains data in memory and keeps it even if it is no longer powered.
The module uses the I2C interface to communicate with Arduino.
Operating voltage: 1.8 - 5V
Memory: 256Kbit (32Kbytes)