The AT25EU0021A is the lowest energy member of our System Enhancing class of code and data storage solutions designed for all system memory tasks including boot/code shadowing and small byte load updates. It is universally compatible and combines low power with faster Read performance to save more than 70% energy.


  • Universally compatible pin out and command set
  • 60x faster Erase operation
  • Optimized for fast Read and lowest energy usage.
  • Low Sleep power for bootloader tasks
  • Continuous read, wrap and burst modes for XiP
  • Standard block architecture with added 256-byte page erase for energy efficient Data Logging
  • Eliminate MCU poling and reduce overhead with auto-alert Active Interrupt




  • Small coin cell applications
    • Low-power Read
    • Low-energy Fast Erase
  • Boot/Code shadow memory
    • Fast low-power Read
    • 100nA Deep Power Down
  • Simple event/data logging applications
    • Fast Erase
    • Page Erase
    • Low-energy Erase and Program


Type Title Date
Datasheet PDF 2.16 MB
Application Note PDF 294 KB
Guide PDF 790 KB
Application Note PDF 227 KB
Product Brief PDF 710 KB
Other PDF 1.00 MB
Application Note PDF 355 KB
Application Note PDF 794 KB
Application Note PDF 663 KB
Manual - Development Tools PDF 446 KB
Application Note PDF 956 KB
Application Note PDF 354 KB
Application Note PDF 357 KB
Application Note PDF 1.10 MB
Application Note PDF 504 KB
Other PDF 1.21 MB
Product Brief PDF 1.14 MB
White Paper PDF 399 KB
Application Note PDF 313 KB
Product Change Notice PDF 100 KB
Product Change Notice PDF 615 KB
Product Change Notice PDF 92 KB
Product Change Notice PDF 142 KB
Product Change Notice PDF 183 KB
Product Change Notice PDF 193 KB
Product Change Notice PDF 97 KB
Product Change Notice PDF 647 KB
Product Change Notice PDF 138 KB
Product Change Notice PDF 148 KB
Product Change Notice PDF 528 KB
30 items

Design & Development



Type Title Date
Model - IBIS IBS 217 KB
Model - Verilog V 143 KB
2 items

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