Features: Features AT24C256 chip with 32KB EEPROM capacity for permanent data retention. Ideal for storing parameters, configuration in industrial control and calibration devices without power loss. Uses standard SCL clock and SDA data lines for easy integration with STM32 and 51 MCU controllers. Built in pull up resistors eliminating external components for easy installation. Equipped with DIP 8 socket allowing interchangeable use of entire 24CXX series chips (24C02 to 24C256). Swap memory chips without replacing the base PCB for scalable storage solutions. Three address pins with caps enable 8 device connection on single I2C bus. Write protective prevents accidental data erasure in critical applications like firmware storage. Operates from 2.7V to 5.5V for seamless 3.3V/5V integration. Power LED provides visual confirmation for troubleshooting connections in instrumentation and appliance applications. Specifications: Component:PCB+Electronic Component Size:Approx.32.4x12.8mm/1.27x0.5inch Package Includes: 3 Optional Package: Package 1 Include:1Pc EEPROM Memory Module Package 2 Include:3Pcs EEPROM Memory Module Package 3 Include:5Pcs EEPROM Memory Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.