The AT24C256-10CI-1.8 is a 256 Kbit EEPROM (Electrically Erasable Programmable Read-Only Memory) from Atmel (now Microchip Technology). It is organized as 32,768 words of 8 bits each and uses a 2-wire serial interface (I2C) for communication. The “-10” in the part number indicates a maximum clock frequency of 1 MHz, and the “1.8” indicates a 1.8V supply voltage. It is categorized as END-OF-LIFE, implying it's no longer in production.

Applications

• Consumer Electronics: Storing user preferences, settings, and data logs in devices like TVs, set-top boxes, and audio players.
• Industrial Control Systems: Retaining calibration data, configuration parameters, and sensor readings in industrial equipment.
• Automotive Electronics: Saving vehicle settings, diagnostic information, and system parameters in automotive control units.
• Medical Devices: Storing patient data, device settings, and calibration information in medical instruments.
• Networking Equipment: Used to store network configuration, security settings, and MAC addresses in routers and switches.

Features

• 256 Kbit EEPROM: Provides 262,144 bits of non-volatile storage.
• 2-Wire Serial Interface (I2C): Employs the I2C protocol for efficient communication.
• Low Voltage Operation (1.8V): Designed for low-power applications using a 1.8V supply.
• 1 MHz Clock Frequency: Supports clock frequencies up to 1 MHz for data transfer.
• Write Protection: Includes write protection features to prevent accidental data corruption.
• Page Write Mode: Allows for writing up to a specified number of bytes in a single operation.

Benefits

• Large Storage Capacity: Offers a significant amount of non-volatile storage for diverse applications.
• Simple Interface: The I2C interface simplifies integration with microcontrollers and other devices.
• Low Power Consumption: Suitable for battery-powered and energy-efficient systems.
• Reliable Data Storage: Ensures reliable and long-lasting storage of critical data.
• Fast Data Transfer: Supports clock frequencies up to 1 MHz for efficient data transfer.

Additional Details

The AT24C256-10CI-1.8 is an END-OF-LIFE component. For new designs, it is essential to consider newer, actively supported EEPROM alternatives with similar capacity and interface characteristics from Microchip or other manufacturers. When selecting a replacement, ensure compatibility with the 1.8V operating voltage, I2C communication protocol, and desired clock frequency. Carefully evaluate the availability and pricing of potential replacement parts, as END-OF-LIFE components can be challenging to source. Always consult datasheets and specifications to verify that the replacement component meets the requirements of your application.