AT45DB081D-SSU-SL954

Memory IC Overview

The AT45DB081D-SSU-SL954 is a non-volatile serial Flash memory device manufactured by Renesas Electronics Corporation. It features an 8 Mbit storage capacity organized into 4,096 pages of either 256 or 264 bytes. The component utilizes a RapidS serial interface compatible with SPI modes 0 and 3, supporting maximum clock frequencies up to 66 MHz. It operates on a single supply voltage ranging from 2.5V to 3.6V or 2.7V to 3.6V. The device includes two SRAM data buffers for efficient read-modify-write operations and supports continuous array reads. It is housed in an 8-pin SOIC package and functions within an industrial temperature range.

Memory IC Feature Summary

• Supports user-configurable page sizes of 256 or 264 bytes via factory pre-configuration
• Includes two SRAM data buffers enabling simultaneous data reception and main memory reprogramming
• Provides hardware and software data protection with individual sector lockdown capabilities
• Features a 128-byte security register containing unique device identifiers and user-programmable space

Memory IC Applications

• Digital voice storage applications
• Image data storage systems
• Program code shadowing
• General-purpose data storage

Memory IC Procurement Notes

Verify the specific ordering suffix SL954 against official manufacturer documentation to confirm packaging details and revision status. Confirm that the component meets required environmental certifications such as RoHS compliance. Check for any product change notices regarding manufacturing site transfers or label updates. Ensure compatibility with existing system voltage levels before procurement.

Memory IC Selection Notes

Select this component when a low-pin-count serial interface is required for high-density storage. Consider the RapidS interface speed for applications needing continuous data streams. Evaluate the buffer architecture if EEPROM emulation or byte-level alterability is necessary. Verify that the 8-Mbit capacity aligns with system memory requirements and that the operating voltage matches the host processor supply.

Memory IC Part Context

This part belongs to the AT45DB081D DataFlash series, designed for high-speed serial access. It replaces parallel NOR flash architectures by reducing pin count and simplifying PCB layout. The device is optimized for commercial and industrial environments requiring low power consumption and reliable non-volatile storage solutions.

Memory IC Replacement Considerations

AT45DB081E-SHN-B

Memory IC FAQ

How does the AT45DB081D handle data modification?

It uses two SRAM buffers to perform a three-step read-modify-write operation, allowing for EEPROM emulation without erasing entire sectors.

What erase options are available?

The device supports Page Erase, Block Erase (2-Kbytes), Sector Erase (64-Kbytes), and Chip Erase operations.