Memory & Logic

Overview

The AT45DB021E DataFlash is a member of our System Enhancing class of code and data storage solutions designed with an advanced SRAM buffer architecture that makes it the most efficient memory for data logging. It also incorporates a suite of advanced features that save system power, reduce processor overhead, simplify software development, and provide comprehensive data security and integrity options.

  • Includes a controllable R/W SRAM buffer for maximum flexibility
  • Standard block architecture with added 256-byte page erase for energy efficient Data Logging
  • Byte-write provides Serial EEPROM functionality in a Serial NOR Flash device
  • Ultra-deep power down operates at >400nA
  • Extended Vcc operation allows the system memory to operate over the entire voltage range
  • Comprehensive security and unique ID features protect the device from outside tampering

Documentation

Title Type Date
AT45DB021E Datasheet
PDF1.95 MB
Datasheet
AN502: FAQs: NOR Flash Application Note
PDF355 KB
Application Note
AN115 Flash Protection Schemes and Methods
PDF794 KB
Application Note
AN501: Power-Up/Down Considerations in NOR Flash
PDF663 KB
Application Note
AN500:NOR Flash Memory Erase Operation
PDF956 KB
Application Note
Saving Data During a Power Failure Using the DataFlash® E-Series Family
PDF576 KB
Application Note
AN005 Rev A Active Interrupt Proven to Lower Power Consumption
PDF1.10 MB
Application Note
AN111: Implementing Ultra Deep Power Down Mode in AT25xx Series and AT45xx Series
PDF504 KB
Application Note
AVR107: Interfacing AVR microcontrollers with serial memories
PDF485 KB
Related Files:
Application Note
AVR107: Interfacing AVR microcontrollers with serial memories – ZIP
ZIP32 KB
Related Files:
Application Note
AN105 PCB Design and Layout Considerations
PDF313 KB
Application Note
DataFlash Binary Page Size
PDF129 KB
Application Note
DataFlash: SRAM Buffer Read Feature Description
PDF418 KB
Application Note
DataFlash® and Serial Flash BGA Package
PDF619 KB
Application Note
VCC Power Off, Brownout, and Power On with the DataFlash Family
PDF229 KB
Application Note
SPI NOR Flash Product Selector
PDF769 KB
Brochure
SPI NOR FLASH Guide - Standard and System Enhancing Memory
PDF769 KB
Guide
DataFlash Verilog Model User Manual
PDF50 KB
Manual - Development Tools
Conversion Guide Micron EOL M45PE Products
PDF427 KB
Manual - Development Tools
DataFlash VHDL Model User Manual
PDF35 KB
Manual - Development Tools
How System Level Noise in Digital Interfaces can Lead to Spurious Errors in Serial Flash Memory
PDF1.00 MB
Other
Adesto Serial Flash Power Saving Features and Concepts
PDF1.21 MB
Other
2 Mb 1_8v 1_65v 2_0v
ZIP11 KB
Other
2 Mb 2_7v 2_3v 3_0v
ZIP11 KB
Other
2 Mb 3_3v 3_0v 3_6v
ZIP11 KB
Other
Verilog modelE
ZIP93 KB
Other
DataFlash®-L: Page Erase Serial Flash Product Overview
PDF382 KB
Other
PCN034 Addendum: Capacity Expansion for the .150" Narrow SOIC Product Package
PDF100 KB
Product Change Notice
PCN034: Capacity Expansion for the .150" Narrow SOIC Product Package
PDF615 KB
Product Change Notice
PCN038: Wafer Probe Facility Addition Teraprobe
PDF92 KB
Product Change Notice
PCN039: Wafer Probe Test Equipment Transfer
PDF142 KB
Product Change Notice
PCN044: Manufacturing Capacity Expansion; narrow .150" SOIC device package
PDF183 KB
Product Change Notice
PCN045: Capacity Expansion Greatek Taiwan for Wide and Narrow SOIC Packages
PDF193 KB
Product Change Notice
PDF-SF004: Adesto® Serial Flash & DataFlash® Products Package Marking Change
PDF97 KB
Product Change Notice
PDF-SF005: Adesto® Products – Wafer Probe Test Site
PDF647 KB
Product Change Notice
PDF-SF022: Capacity Expansion for the UDFN Product Package
PDF138 KB
Product Change Notice
PDF-SF026:Capacity Expansion for the .208" Wide SOIC Product Package
PDF148 KB
Product Change Notice
PDF002: 2-Mbit DataFlash® (AT45DB021D) Process Geometry Shrink and Device Enhancement – REVISED
PDF146 KB
Product Change Notice
PDF027: 2-Mbit DataFlash® (AT45DB021E) – Yield Improvement
PDF114 KB
Product Change Notice
PDF032: Manufacturing Capacity Expansion for the 8-contact, 6 x 8mm VDFN Package
PDF528 KB
Product Change Notice
Tech Note TN-111, Effect of Excessive Number of CS Toggle Operations on AT25SF641 and AT25QF641
PDF399 KB
White Paper

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

Product Options

    Processing table
    Part Number
    Pkg. Type
    Carrier Type
    Buy / Sample
    AT45DB021E-MHN-T
    play_circleActive
    memory
    view_in_ar
    		DFN Tape & Reel
    AT45DB021E-MHN-Y
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    memory
    view_in_ar
    		DFN Tray
    AT45DB021E-MHN2B-T
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    memory
    view_in_ar
    		DFN Tape & Reel
    AT45DB021E-SHN-B
    play_circleActive
    memory
    view_in_ar
    		SOIC-W Tube
    AT45DB021E-SHN-T
    play_circleActive
    memory
    view_in_ar
    		SOIC-W Tape & Reel
    AT45DB021E-SHN2B-T
    play_circleActive
    memory
    view_in_ar
    		SOIC-W Tape & Reel
    AT45DB021E-SSHN-B
    play_circleActive
    memory
    view_in_ar
    		SOIC-N Tube
    AT45DB021E-SSHN-T
    play_circleActive
    memory
    view_in_ar
    		SOIC-N Tape & Reel
    AT45DB021E-SSHN2B-T
    play_circleActive
    memory
    view_in_ar
    		SOIC-W Tape & Reel
    AT45DB021E-UUN-T
    play_circleActive
    memory
    view_in_ar
    		WLCSP Tape & Reel
    AT45DB021E-DWF
    play_circleActive
    memory
    view_in_ar
    		DWF
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