Features: The AT24C256 I2C module delivers 256Kbit nonvolatile memory storage with 400KHz fast speed communication, featuring 3.3V-5V wide voltages compatibility for seamless integration in microcontroller systems. This memory board (1.9x1.1cm) incorporates pre soldered AT24C256 chip, clearly labeled I2C interfaces pins, and builts in pull up resistors for stable signals transmission in electronics projects. for electronics enthusiasts, engineers, and student working on automotive microcontroller systems requiring persistent data storage solution. Perfect for storing calibration data in car, preserving device configurations in IoTs setups, or logging sensors readings in industrial automation prototypes without power backup. Its breadboard friendly design and standardized I2C protocols ensures effortless compatibility with most development boards, eliminating complex wiring while maintaining data integrity during sudden power loss. Specifications: Materials: PCB Color: Blue Size: 1.9x1.1cm Chip: AT24C02 Package Includes: 10Pcs AT24C02 Storage Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.