The Atmel AT45DB021D-SSU is a 2-Megabit Serial DataFlash memory device. It features a flexible architecture with two SRAM data buffers, allowing for fast read and write operations. This DataFlash is designed for applications requiring non-volatile storage with frequent updates and rewrites.

Applications

• Data Logging: Used in data loggers to store sensor readings and other data.
• Audio Storage: Employed in audio recorders and players for storing audio files.
• Embedded Systems: Integrated into embedded systems for storing configuration data, firmware, and other critical information.
• Industrial Control Systems: Utilized in industrial control systems for storing program code and data.
• Networking Equipment: Used in routers, switches, and other networking devices for storing boot code and configuration settings.

Features

• 2-Megabit Capacity: Provides ample storage for a variety of applications.
• Serial Interface: Uses a simple serial interface for easy connection to microcontrollers and other devices.
• Two SRAM Data Buffers: Allows for continuous data streaming and fast write operations.
• Low Power Consumption: Optimized for energy efficiency, making it suitable for battery-powered applications.
• Page Erase and Block Erase: Supports flexible erase options for efficient memory management.

Benefits

• Fast Data Access: SRAM data buffers enable quick read and write operations.
• Reliable Data Storage: Non-volatile memory ensures data retention even when power is removed.
• Easy Integration: Simple serial interface simplifies the design process.
• Low Power Operation: Extends battery life in portable devices.
• Flexible Memory Management: Page and block erase options allow for efficient memory usage.

Additional Details

The AT45DB021D-SSU operates with a supply voltage of 2.7V to 3.6V. It supports SPI modes 0 and 3. The device is available in various packages, including SOIC and TSSOP. The operating temperature range is typically -40°C to +85°C. It features a hardware data protection mechanism to prevent accidental data corruption. The DataFlash also includes an electronic signature that can be used for device identification.