The AT45DB041-RC is a 4-Megabit Serial DataFlash memory device from Atmel. It is organized as 2048 pages of 256 bytes each. It employs a SPI (Serial Peripheral Interface) for communication, making it compatible with a wide range of microcontrollers. The device features low power consumption and supports both page write and continuous array read operations. Its primary application lies in non-volatile data storage requiring frequent updates and reliable data retention.

Applications

• Data Logging: Recording sensor data, system logs, and other data in industrial control systems and embedded devices.
• Audio Storage: Storing voice recordings and audio samples in portable audio recorders.
• Image Storage: Storing small images and graphics in digital cameras and other imaging devices.
• Configuration Data Storage: Saving system settings, configuration parameters, and user preferences in electronic equipment.
• Firmware Storage: Storing embedded firmware and boot code in microcontrollers and embedded systems.

Features

• 4-Megabit Density: Offers 4,194,304 bits of non-volatile storage capacity.
• Serial Peripheral Interface (SPI): Utilizes a standard SPI interface for communication with microcontrollers.
• Page Write Mode: Supports rapid page write operations for efficient data storage.
• Continuous Array Read: Enables fast sequential data retrieval from the entire memory array.
• Low Power Consumption: Minimizes power requirements for battery-powered applications.
• Dual Buffers: Provides two SRAM data buffers that allow receiving data while a page is being programmed.

Benefits

• Versatile Storage: Suitable for storing data, code, and configuration parameters.
• Efficient Data Transfer: SPI interface facilitates fast and reliable data transfer.
• Simplified System Design: Reduces the complexity of interfacing with microcontrollers.
• Extended Battery Life: Low power consumption maximizes battery life in portable applications.
• Cost-Effective Solution: Offers a competitive storage option for embedded systems.
• Reliable Data Retention: Provides long-term data retention for critical data storage.

Additional Details

The AT45DB041-RC operates within a specific voltage range (refer to the datasheet) and supports different SPI modes. It includes features such as hardware data protection and software data protection to prevent accidental data corruption. The device is available in a variety of packages including SOIC and TSSOP. Due to the 'END-OF-LIFE' status of this part, it is essential to evaluate alternatives for new designs. External pull-up resistors on the SPI lines may be required depending on the microcontroller being used. Data transfer rates and power consumption are key considerations when selecting this memory for a particular application.