Overview

The AT25SF321B is a member of our standard class code and data storage solutions designed for 3V systems in which program code is shadowed from Flash memory into embedded or external RAM for execution.

The architecture includes erase block sizes that are optimized to meet the needs of today's code and data storage applications and three security register pages for unique device serialization, system-level Electronic Serial Number (ESN) storage, locked key storage, etc.

  • Universally compatible pinout and command set
  • Standard block architecture
  • Supports Dual I/O, Quad I/O and XiP operation
  • Continuous read, wrap and burst modes for XiP
AT25xF SPI Flash Memory
AT25xF SPI Flash Memory

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    AT25SF321B-SSHB-B
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    		SOIC-N Tube 1 0.5408
    AT25SF321B-SSHB-T
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    memory
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    		SOIC-N Tape & Reel 1 0.5312
    AT25SF321B-SHB-B
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    		SOIC-W Tube 1
    AT25SF321B-SHB-T
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    		SOIC-W Tape & Reel 1 0.5311
    AT25SF321B-MHB-T
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    		DFN Tape & Reel 1
    AT25SF321B-DWF
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    		DWF 1
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    • Cart icon to the right of the chip icon: Indicates that samples are available for this product