AT45DB021E-DWF

Overview

The AT45DB021E-DWF is a 2 Mbit (256 k x 8) Serial NOR Flash memory component manufactured by Renesas Electronics Corporation. It operates within a wide voltage range of 1.65 V to 3.6 V and supports Single SPI interface with clock frequencies up to 70 MHz. The device features an advanced SRAM buffer architecture for efficient data logging and byte-write functionality. It is designed for industrial temperature ranges from -40°C to +85°C. This specific variant is supplied as a bare die in wafer form, intended for integration into custom packaging solutions.

Feature Summary

• Includes a controllable Read/Write SRAM buffer for maximum flexibility and efficient data handling
• Standard block architecture with added 256-byte page erase capability for energy-efficient data logging
• Byte-write capability provides Serial EEPROM functionality within a Serial NOR Flash device
• Comprehensive security and unique ID features protect the device from outside tampering

Applications

• Data logging systems requiring efficient page erase operations
• Embedded code and data storage solutions
• Systems requiring Serial EEPROM emulation via byte-write functionality
• Applications needing comprehensive data security and integrity options

Procurement Notes

Verify availability status carefully as this specific die-level part may have limited supply or require factory special orders. Confirm that the receiving manufacturing process can handle bare die assembly. Ensure compatibility with the system's voltage requirements and interface protocols before finalizing procurement plans.

Selection Notes

Select this component when a bare die solution is required for space-constrained designs. It is suitable for applications needing wide voltage operation and high-speed SPI access. Consider the need for custom packaging if standard packages are not viable. Evaluate the SRAM buffer benefits for data-intensive tasks.

Part Context

This part belongs to the AT45DB021E DataFlash series, which offers system-enhancing code and data storage solutions. The series is characterized by its advanced SRAM buffer architecture, making it efficient for data logging. It integrates features to save system power, reduce processor overhead, and simplify software development while providing robust data security options.

Replacement Considerations

Check for other variants within the AT45DB021E family that offer different package types such as DFN or SOIC if bare die assembly is not feasible. Verify electrical specifications and pinout compatibility for any direct substitutes.