The AT24C256C is a 256-Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) from Microchip Technology (formerly Atmel). It is organized as 32,768 words of 8 bits each. This device features advanced low-power design, making it suitable for a wide range of applications.

Applications

• Consumer Electronics: Used in set-top boxes, DVD players, and other consumer devices for storing user preferences, settings, and other non-volatile data.
• Industrial Control: Employed in industrial equipment for storing configuration parameters, calibration data, and system logs.
• Medical Devices: Utilized in medical instruments for storing patient data, device settings, and diagnostic information.
• Automotive Electronics: Integrated into automotive systems for storing vehicle settings, diagnostic codes, and other critical data.
• Networking Equipment: Used in routers, switches, and other networking devices for storing configuration files and network parameters.

Features

• Two-Wire Serial Interface: Communicates using the industry-standard I2C serial communication protocol.
• Low-Voltage Operation: Operates over a wide voltage range, typically from 1.7V to 5.5V, accommodating various system requirements.
• Write Protect Feature: Includes a hardware write protect pin to prevent accidental data modification.
• Page Write Mode: Supports page write operations, allowing for faster data writing by writing multiple bytes in a single operation.
• Self-Timed Write Cycle: Features an internal self-timed write cycle, simplifying the write process and reducing the need for external timing.

Benefits

• Non-Volatile Memory: Provides reliable non-volatile data storage, ensuring data retention even when power is removed.
• Easy Integration: Simplifies system design with its standard I2C interface and flexible operating voltage.
• Data Protection: Prevents accidental data loss with the hardware write protect feature.
• Fast Write Performance: Improves write speeds with the page write mode.
• Long Endurance: Designed for high endurance with a large number of write cycles, ensuring reliable operation over the product's lifespan.

Technical Specifications

The AT24C256C EEPROM has a typical standby current of less than 1 μA and a typical write cycle time of 5 ms. The operating temperature range is -40°C to +85°C. It is available in a variety of packages, including SOIC, TSSOP, and PDIP.