Overview
Description
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.
Features
- 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
Comparison
Applications
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Support
Support Communities
Support Communities
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AT25EU0021A-MAHN 2-Mbit, 1.65V – 4.4V Range - VCC Voltage Ripple requirement
We are using FLASH AT25EU0021A-MAHN 2-Mbit, 1.65V – 4.4V Range in our Dragonfly LoRa TAG. Please advise what is the VCC ripple requirements. We are having 50mV ripple , please advise if there can be any issue with this ripple. Currently all the testing are ok, but we ...
Dec 28, 2023 -
DA14531 (WLCSP17) Cannot flash external SPI (or read OTP) - Failed clearing memory address 7FC3C08. Failed configuring SPI ports and pins.QuestionContext
Question How can we let SmartSnippets Toolbox turn off HW_RESET, or otherwise customize the jtag_programmer.bin ? Context We have been able to run our firmware (based on the ble_app_example, for SDK version: 6.0.14.1114) using Keil - so we know we can program the RAM ...
Mar 21, 2023 -
DA14531 - Writing & Reading Flash-Data
Hello, I am coding based on the ble_app_peripheral example from SDK6.0.16.1144 trying to write and read data from flash. For example I have a char with the value "00000" and would like to write into flash. I also would like to read the value of ...
Mar 21, 2023