The Atmel AT24C04A is a 4Kbit (512 x 8) Serial EEPROM (Electrically Erasable Programmable Read-Only Memory). It features a two-wire serial interface (I2C) for communication and is designed for a variety of applications requiring non-volatile data storage. It's an upgrade from smaller EEPROMs, providing increased storage capacity while maintaining compatibility.

Applications

• Consumer Electronics
• Industrial Control Systems
• Automotive Electronics
• Smart Cards
• Set-Top Boxes
• Storing Configuration Settings

Features

• 4Kbit (512 x 8) EEPROM
• Two-Wire Serial Interface (I2C)
• Low Voltage Operation: 1.8V to 5.5V
• Write Protect Feature
• Page Write Mode
• Self-Timed Write Cycle
• High Reliability: 1 Million Write Cycles
• Data Retention: 100 Years

Benefits

• Increased Storage Capacity: Offers more storage compared to smaller EEPROMs.
• Easy to Use: Simple two-wire interface simplifies system integration.
• Low Power Consumption: Suitable for battery-powered applications.
• High Reliability: Ensures data integrity over a long period.
• Page Write Mode: Allows for faster write operations.

Additional Details

The AT24C04A utilizes the I2C communication protocol. It includes a page write mode, which allows for writing multiple bytes in a single operation, improving write speeds. The write protect feature prevents accidental data overwrites. The device's self-timed write cycle eliminates the need for external timing circuits. Although categorized as END-OF-LIFE, the AT24C04A is still suitable for many existing designs that require a reliable 4Kbit EEPROM with an I2C interface. It's available in various packages, including SOIC and PDIP.