AT45DB081D-SU

Memory IC Overview

The AT45DB081D-SU is an 8Mbit serial Flash memory device manufactured by Renesas Electronics Corporation. It features a RapidS serial interface compatible with SPI modes 0 and 3, supporting clock frequencies up to 66MHz. The memory array consists of 4,096 pages, each organized as either 256 bytes or 264 bytes. The device operates on a single supply voltage ranging from 2.5V to 3.6V (or 2.7V to 3.6V). It includes two SRAM data buffers for efficient read-modify-write operations and supports page, block, sector, and chip erase functions.

Memory IC Feature Summary

• Supports high-speed RapidS serial interface compatible with standard SPI protocols
• Features dual SRAM data buffers enabling continuous data stream processing
• Provides flexible erase granularity including page, block, sector, and full chip options
• Includes hardware and software protection mechanisms with dedicated security registers

Memory IC Applications

• Digital voice storage applications
• Image data storage systems
• Program code shadowing and execution
• General-purpose data storage in industrial environments

Memory IC Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm package dimensions match the 8-SOIC specification. Ensure voltage supply levels align with the 2.5V or 2.7V minimum requirements. Check for environmental compliance certificates such as RoHS and Halogen-free status prior to integration into final assemblies.

Memory IC Selection Notes

Select this component when low pin count and simplified PCB layout are required. Suitable for designs needing EEPROM-like byte-level modification capabilities via buffer operations. Ideal for applications requiring robust data retention and endurance specifications within an industrial temperature range. Consider power consumption profiles for battery-operated systems.

Memory IC Part Context

This device belongs to the DataFlash product family, designed to simplify system hardware by utilizing sequential access rather than parallel addressing. Originally developed by Adesto Technologies, the product line was acquired by Microchip Technology and subsequently integrated into Renesas Electronics. The architecture focuses on reducing switching noise and package size while maintaining high-density storage capabilities.

Memory IC Replacement Considerations

AT45DB081E-SHN-B

Memory IC FAQ

How does the device handle read-modify-write operations?

Data is first written into one of the two SRAM buffers. The buffer contents are then modified as needed before being programmed into the main memory array using specific buffer-to-main-memory commands.

What is the maximum clock frequency supported?

The RapidS serial interface supports clock frequencies up to 66MHz for continuous array reads and other high-speed operations.