The Atmel AT24C64C is a 64 Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) with a standard two-wire serial interface. It is organized as 8192 words of 8 bits each. This device is commonly used for storing configuration data and other non-volatile information in a wide range of applications. As an end-of-life product, it is important to verify its availability and consider alternatives for new designs.

Applications

• Storing configuration data for microcontrollers
• Storing serial numbers and calibration data
• Storing user preferences and settings
• Data logging
• Consumer electronics

Features

• 64 Kbit (8192 x 8) EEPROM
• Two-wire serial interface (I2C compatible)
• Low voltage operation: Typically 1.8V to 5.5V
• Schmitt trigger, filtered inputs for noise suppression
• Write protect pin for hardware data protection
• Self-timed write cycle: Typical write time of 5ms
• High reliability: 1,000,000 write cycles endurance
• Data retention: 100 years
• Available in various package options, including SOIC, TSSOP, and PDIP

Benefits

• Non-volatile data storage: Retains data even when power is removed.
• Easy to interface: Simple two-wire interface simplifies system integration.
• Low power consumption: Suitable for battery-powered applications.
• High reliability: Ensures data integrity and long-term performance.
• Small package size: Allows for compact system designs.

Additional Details

The AT24C64C is typically used in applications where non-volatile storage of small amounts of data is required. The two-wire serial interface allows for easy connection to microcontrollers. The write protect pin provides a mechanism to prevent accidental data corruption. The device's low power consumption makes it suitable for portable and battery-powered applications. Proper decoupling capacitors should be used to minimize noise and ensure reliable operation.

Because this is an end-of-life part, designers should consider newer EEPROM devices with similar or improved features from Atmel or other manufacturers.