The AT25040AN-10SE-2.7 is a 4-Kbit serial interface EEPROM (Electrically Erasable Programmable Read-Only Memory) designed by Atmel. It operates with a single power supply and communicates using the Serial Peripheral Interface (SPI) bus. This device is ideally suited for applications that require non-volatile memory storage with a simple interface.

Applications

• Storing configuration data in embedded systems
• Data logging in industrial equipment
• Storing calibration parameters in sensors
• Storing user preferences in consumer electronics
• Storing security codes or identification information

Features

• Low-voltage operation: 2.7V supply voltage.
• Serial Peripheral Interface (SPI): Supports SPI Modes 0 and 3.
• 4-Kbit EEPROM: Organized as 512 bytes.
• High-speed operation: Up to 10 MHz clock frequency.
• Self-timed write cycle: Eliminates the need for external timing.
• Write protect feature: Prevents accidental data corruption.
• High reliability: Endurance of 1,000,000 write cycles per byte.
• Data retention: 100-year data retention.
• Small package size: Available in SOIC and other surface mount packages.

Benefits

• Simple interface: SPI interface simplifies integration with microcontrollers.
• Low power consumption: Suitable for battery-powered applications.
• Non-volatile memory: Data is retained even when power is removed.
• High endurance: Provides reliable data storage for demanding applications.
• Write protection: Prevents accidental overwriting of critical data.
• Compact size: Saves board space in space-constrained designs.

Additional Details

The AT25040AN-10SE-2.7 is designed for low-power and low-voltage operation, making it suitable for a variety of battery-powered devices and embedded systems. It utilizes the SPI interface, which is a widely supported standard for serial communication. The device also features a write protect pin that can be used to prevent accidental modification of the memory contents. The EEPROM is organized into 512 bytes, which allows for efficient storage of small amounts of data. Its high endurance and data retention characteristics ensure reliable data storage over a long period. The part number suffix -10SE indicates the speed grade (10 MHz) and package type. It's commonly used in applications requiring frequent writing and reading of configuration settings or data logging.