The AT24C64A is a 64-kilobit (8K x 8) Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) utilizing a 2-wire serial interface. This memory device is organized as 8192 words of 8 bits each. It is designed for a wide range of applications requiring non-volatile memory storage, such as storing configuration settings, user data, and identification information. It's an upgrade from the AT24C32A, offering twice the memory capacity.

Applications

• Consumer electronics (e.g., smart TVs, Blu-ray players) for storing user profiles, channel lists, and parental control settings.
• Automotive systems for storing vehicle configuration parameters, diagnostic codes, and electronic control unit (ECU) settings.
• Industrial automation equipment for storing program settings, calibration data, and recipe parameters.
• Medical devices for storing patient data, equipment settings, and calibration information.
• Security and access control systems for storing access codes, user credentials, and event logs.
• Networking devices for storing configuration files, routing tables, and MAC addresses.

Features

• Low-voltage operation: 1.8V to 5.5V.
• 2-wire serial interface: Compatible with I2C bus protocol.
• Schmitt trigger, filtered inputs for noise immunity.
• Self-timed write cycle: Simplifies the write process and eliminates external timing requirements.
• Hardware write protection: Prevents accidental data corruption.
• High reliability: Offers an endurance of 1 million write cycles per memory location.
• Data retention: Retains data for up to 100 years.
• Page write mode: Allows for writing up to 16 bytes in a single write cycle.

Benefits

• Easy integration: The 2-wire interface simplifies connection to microcontrollers and other system components, reducing design complexity.
• Low power consumption: Makes it suitable for battery-powered and energy-sensitive applications.
• Reliable data storage: Ensures data integrity over an extended period, minimizing data loss risks.
• Flexible memory management: Allows for efficient storage and retrieval of data.
• Cost-effectiveness: Provides a competitive non-volatile memory solution for various applications.

Additional Details

The AT24C64A supports byte write, page write (up to 16 bytes), and sequential read operations. It is available in various packages, including PDIP, SOIC, and TSSOP. The operating temperature range is typically -40°C to +85°C. It features bidirectional data transfer and device addressing. The device also includes features for reducing power consumption during idle periods. The AT24C64A is widely utilized because of its reliability and ease of use.