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Product Brief

DataFlash™ SPI Memory

Most Efficient Flash Memory for Data Logging

Byte / Page Programming
Fast Page Erase
Low Power Modes
Power Fail Protection
Data Integrity & Security

DataFlash’s advanced dual SRAM buffer architecture 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.

Features

Wide Vcc

Dual SRAM buffer

Low power operation extends system battery life

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

Simulation Tools

Programmer Support

Adesto Flash Driver Reference Package

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DataFlash™ SPI Memory

Density	Product / Datasheet	Speed	Vcc range	Interface	Details	Status	Samples

64Mbit	AT45DB641E	104MHz	1.7V-3.6V	SPI		● Active	Order Samples
32Mbit	AT45DB321E	104MHz	2.3V-3.6V	SPI		● Active	Order Samples
32Mbit	AT45DQ321	70-104MHz	2.3V-3.6V	SPI, Dual, Quad I/O		● Active	Order Samples
32Mbit	AT45DQ321 (105°C)	40-104MHz	2.3V-3.6V	SPI, Dual, Quad I/O		● Active	Order Samples
16Mbit	AT45DB161E	104MHz	2.3V-3.6V	SPI		● Active	Order Samples
16Mbit	AT45DQ161	100MHz	2.3V-3.6V	SPI, Dual, Quad I/O		● Active	Order Samples
8Mbit	AT45DB081E	133MHz	1.7V-3.6V	SPI		● Active	Order Samples
4Mbit	AT45DB041E	104MHz	1.65V-3.6V	SPI		● Active	Order Samples
4Mbit	AT45DB041E (125°C)	85MHz	1.65V-3.6V	SPI		● Active	Order Samples
2Mbit	AT45DB021E	70MHz	1.65V-3.6V	SPI		● Active	Order Samples

AT45DB641E details
Ordering Code	Package
AT45DB641E-SHN-B	SOIC 208MIL 8S2 8
AT45DB641E-SHN-T	SOIC 208MIL 8S2 8
AT45DB641E-MHN-Y	UDFN 8MA1 8 - 5x6
AT45DB641E-MHN-T	UDFN 8MA1 8 - 5x6
AT45DB641E-MWHN-Y	MLF VDFN 8MW 8 - 6x8
AT45DB641E-MWHN-T	MLF VDFN 8MW 8 - 6x8
AT45DB641E-CCUN-T	UBGA 9CC19 - 6x6
AT45DB641E-UUN-T	WLCSP - Contact Adesto
AT45DB641E-SHN2B-T	SOIC 208MIL 8S2 8
AT45DB641E-MHN2B-T	UDFN 8MA1 8 - 5x6
AT45DB641E-MWHN2B-T	MLF VDFN 8MW 8 - 6x8
AT45DB641E-CCUN2B-T	UBGA 9CC19 - 6x6
AT45DB641E-UUN2B-T	WLCSP - Contact Adesto

AT45DB321E details
Ordering Code	Package
AT45DB321E-CCUF-T	UBGA 9CC19 - 6x6
AT45DB321E-MHF-T	UDFN 8MA1 8 - 5x6
AT45DB321E-MHF-Y	UDFN 8MA1 8 - 5x6
AT45DB321E-MWHF-T	MLF VDFN 8MW 8 - 6x8
AT45DB321E-MWHF-Y	MLF VDFN 8MW 8 - 6x8
AT45DB321E-MWHF2B-T	MLF VDFN 8MW 8 - 6x8
AT45DB321E-MHF2B-T	UDFN 8MA1 8 - 5x6
AT45DB321E-SHF-B	SOIC 208MIL 8S2 8
AT45DB321E-SHF-T	SOIC 208MIL 8S2 8
AT45DB321E-SHF2B-T	SOIC 208MIL 8S2 8
AT45DB321E-SHFHA-T	SOIC 208MIL 8S2 8
AT45DB321E-SHFHC-T	SOIC 208MIL 8S2 8

AT45DQ321 details
Ordering Code	Package
AT45DQ321-SHF-B	SOIC 208MIL 8S2 8
AT45DQ321-SHF-T	SOIC 208MIL 8S2 8
AT45DQ321-MHF-Y	UDFN 8MA1 8 - 5x6
AT45DQ321-MHF-T	UDFN 8MA1 8 - 5x6
AT45DQ321-MWHF-T	MLF VDFN 8MW 8 - 6x8
AT45DQ321-MWHF-Y	MLF VDFN 8MW 8 - 6x8
AT45DQ321-CCUF-T	UBGA 9CC19 - 6x6
AT45DQ321-SHF2B-T	SOIC 208MIL 8S2 8
AT45DQ321-MWHF2B-T	MLF VDFN 8MW 8 - 6x8
AT45DQ321-MHF2B-T	UDFN 8MA1 8 - 5x6

AT45DB161E details
Ordering Code	Package
AT45DB161E-MHD-Y	UDFN 8MA1 8 - 5x6
AT45DB161E-MHD-T	UDFN 8MA1 8 - 5x6
AT45DB161E-MHD2B-T	UDFN 8MA1 8 - 5x6
AT45DB161E-MHF-T	UDFN 8MA1 8 - 5x6
AT45DB161E-MHF2B-T	UDFN 8MA1 8 - 5x6
AT45DB161E-MHF-Y	UDFN 8MA1 8 - 5x6
AT45DB161E-SHD-B	SOIC 208MIL 8S2 8
AT45DB161E-SHD-T	SOIC 208MIL 8S2 8
AT45DB161E-SHD2B-T	SOIC 208MIL 8S2 8
AT45DB161E-SHF-T	SOIC 208MIL 8S2 8
AT45DB161E-SHF2B-T	SOIC 208MIL 8S2 8
AT45DB161E-SSHD-B	SOIC 150MIL 8S1 8
AT45DB161E-SSHD-T	SOIC 150MIL 8S1 8
AT45DB161E-SSHD2B-T	SOIC 150MIL 8S1 8
AT45DB161E-SHF-B	SOIC 208MIL 8S2 8
AT45DB161E-SSHF-B	SOIC 150MIL 8S1 8
AT45DB161E-SSHF-T	SOIC 150MIL 8S1 8
AT45DB161E-SSHF2B-T	SOIC 150MIL 8S1 8
AT45DB161E-UUF2B-T	11-WLCSP
AT45DB161E-UUF-T	11-WLCSP

AT45DQ161 details
Ordering Code	Package
AT45DQ161-SHF-B	SOIC 208MIL 8S2 8
AT45DQ161-SHF-T	SOIC 208MIL 8S2 8
AT45DQ161-MHF-Y	UDFN 8MA1 8 - 5x6
AT45DQ161-MHF-T	UDFN 8MA1 8 - 5x6
AT45DQ161-SSHF-T	SOIC 150MIL 8S1 8
AT45DQ161-SSHF-B	SOIC 150MIL 8S1 8
AT45DQ161-CCUF-T	UBGA 9CC19 - 6x6
AT45DQ161-SHF2B-T	SOIC 208MIL 8S2 8
AT45DQ161-SSHF2B-T	SOIC 150MIL 8S1 8
AT45DQ161-MHF2B-T	UDFN 8MA1 8 - 5x6
AT45DQ161-SHFHB-T	SOIC 208MIL 8S2 8
AT45DQ161-SSHFHB-T	SOIC 150MIL 8S1 8
AT45DQ161-SHFHD-T	SOIC 208MIL 8S2 8
AT45DQ161-SSHFHD-T	SOIC 150MIL 8S1 8

AT45DB081E details
Ordering Code	Package
AT45DB081E-SSHN-T	SOIC 150MIL 8S1 8
AT45DB081E-SHN-B	SOIC 208MIL 8S2 8
AT45DB081E-SHN-T	SOIC 208MIL 8S2 8
AT45DB081E-MHN-Y	UDFN 8MA1 8 - 5x6
AT45DB081E-MHN-T	UDFN 8MA1 8 - 5x6
AT45DB081E-SSHN2B-T	SOIC 150MIL 8S1 8
AT45DB081E-SHN2B-T	SOIC 208MIL 8S2 8
AT45DB081E-MHN2B-T	UDFN 8MA1 8 - 5x6
AT45DB081E-SSHN-B	SOIC 150MIL 8S1 8
AT45DB081E-UUN-T	8-WLCSP
AT45DB081E-DWF	See Wafer-Die Solution Menu

AT45DB041E details
Ordering Code	Package
AT45DB041E-SSHN-T	SOIC 150MIL 8S1 8
AT45DB041E-SHN-B	SOIC 208MIL 8S2 8
AT45DB041E-SHN-T	SOIC 208MIL 8S2 8
AT45DB041E-MHN-Y	UDFN 8MA1 8 - 5x6
AT45DB041E-MHN-T	UDFN 8MA1 8 - 5x6
AT45DB041E-SSHN2B-T	SOIC 150MIL 8S1 8
AT45DB041E-SHN2B-T	SOIC 208MIL 8S2 8
AT45DB041E-MHN2B-T	UDFN 8MA1 8 - 5x6
AT45DB041E-SSHN-B	SOIC 150MIL 8S1 8
AT45DB041E-UUN-T	8-WLCSP
AT45DB041E-DWF	See Wafer-Die Solution Menu

AT45DB021E details
Ordering Code	Package
AT45DB021E-MHN-T	UDFN 8MA1 8 - 5x6
AT45DB021E-MHN-Y	UDFN 8MA1 8 - 5x6
AT45DB021E-MHN2B-T	UDFN 8MA1 8 - 5x6
AT45DB021E-SHN-B	SOIC 208MIL 8S2 8
AT45DB021E-SHN-T	SOIC 208MIL 8S2 8
AT45DB021E-SHN2B-T	SOIC 208MIL 8S2 8
AT45DB021E-SSHN-B	SOIC 150MIL 8S1 8
AT45DB021E-SSHN-T	SOIC 150MIL 8S1 8
AT45DB021E-SSHN2B-T	SOIC 150MIL 8S1 8
AT45DB021E-UUN-T	8-WLCSP
AT45DB021E-DWF	See Wafer-Die Solution Menu

AT45DQ321 (105°C) details
Ordering Code	Package
AT45DQ321-SHFHB-B	SOIC 208MIL 8S2 8
AT45DQ321-SHFHB-T	SOIC 208MIL 8S2 8

AT45DB041E (125°C) details
Ordering Code	Package
AT45DB041E-SHNHT-B	SOIC 208MIL 8S2 8
AT45DB041E-SHNHT-T	SOIC 208MIL 8S2 8
AT45DB041E-SSHNHT-B	SOIC 105MIL 8S1 8
AT45DB041E-SSHN-T	SOIC 105MIL 8S1 8

Micron M25PE Replacements

Density	Product / Datasheet	Speed	Vcc range	Interface	Details	Status	Samples

16Mbit	AT25PE16	85MHz	2.3V-3.6V	SPI		● Active	Order Samples
8Mbit	AT25PE80	85MHz	1.7V-3.6V	SPI		● Active	Order Samples
4Mbit	AT25PE40	85MHz	1.65V-3.6V	SPI		● Active	Order Samples
2Mbit	AT25PE20	85MHz	1.65V-3.6V	SPI		● Active	Order Samples

AT25PE16 details
Ordering Code	Package
AT25PE16-SSHN-B	SOIC 150MIL 8S1 8
AT25PE16-SSHN-T	SOIC 150MIL 8S1 8
AT25PE16-SHN-B	SOIC 208MIL 8S2 8
AT25PE16-SHN-T	SOIC 208MIL 8S2 8
AT25PE16-MHN-Y	UDFN 8MA1 8 - 5x6
AT25PE16-MHN-T	UDFN 8MA1 8 - 5x6

AT25PE20 details
Ordering Code	Package
AT25PE20-SSHN-B	SOIC 150MIL 8S1 8
AT25PE20-SSHN-T	SOIC 150MIL 8S1 8
AT25PE20-SHN-B	SOIC 208MIL 8S2 8
AT25PE20-SHN-T	SOIC 208MIL 8S2 8
AT25PE20-MHN-Y	UDFN 8MA1 8 - 5x6
AT25PE20-MHN-T	UDFN 8MA1 8 - 5x6

AT25PE40 details
Ordering Code	Package
AT25PE40-SSHN-B	SOIC 150MIL 8S1 8
AT25PE40-SSHN-T	SOIC 150MIL 8S1 8
AT25PE40-SHN-B	SOIC 208MIL 8S2 8
AT25PE40-SHN-T	SOIC 208MIL 8S2 8
AT25PE40-MHN-Y	UDFN 8MA1 8 - 5x6
AT25PE40-MHN-T	UDFN 8MA1 8 - 5x6

AT25PE80 details
Ordering Code	Package
AT25PE80-SSHN-B	SOIC 150MIL 8S1 8
AT25PE80-SSHN-T	SOIC 150MIL 8S1 8
AT25PE80-SHN-B	SOIC 208MIL 8S2 8
AT25PE80-SHN-T	SOIC 208MIL 8S2 8
AT25PE80-MHN-Y	UDFN 8MA1 8 - 5x6
AT25PE80-MHN-T	UDFN 8MA1 8 - 5x6

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Product Briefs and Summaries
Name		Date	Version
DataFlash Products Overview (491.34 KB)

Application notes
Name		Date	Version
AN005 Rev A Active Interrupt Proven to Lower Power Consumption (873.64 KB)
AN111: Implementing Ultra Deep Power Down Mode in AT25xx Series and AT45xx Series (339.24 KB)
AN500:NOR Flash Memory Erase Operation (807.16 KB)
AN501: Power-Up/Down Considerations in NOR Flash (587.36 KB)		01/05/2021	A1
AVR116: Wear Leveling on DataFlash (628.62 KB)
AVR335: Digital Sound Recorder with tinyAVR or megaAVR and DataFlash (149.29 KB)
AVR335: Digital Sound Recorder with tinyAVR or megaAVR and DataFlash – Zip (12.73 KB)
DataFlash Binary Page Size (129.17 KB)
DataFlash: SRAM Buffer Read Feature Description (451.4 KB)
DataFlash® and Serial Flash BGA Package (619.13 KB)
Saving Data During a Power Failure Using the DataFlash® E-Series Family (468.27 KB)		11/12/2020	A0
VCC Power Off, Brownout, and Power On with the DataFlash Family (270.42 KB)

Layout Guides
Name		Date	Version
PCB Design and Layout Considerations for Adesto Memory Devices (313.89 KB)

Software Resources
Name		Date	Version
Simulation Tools(29.68 KB)

User guides and manuals
Name		Date	Version
Conversion Guide Micron EOL M45PE Products (276.43 KB)
DataFlash Verilog Model User Manual (50.32 KB)
DataFlash VHDL Model User Manual (35.26 KB)
Dialog Flash Memory for Dialog SoC Products (181.56 KB)		12/02/2021

RoHS and Reach
Name		Date	Version
Certifications and Statements (29.68 KB)

General
Name		Date	Version
Adesto Serial Flash Power Saving Features and Concepts (1.22 MB)
DataFlash Memory Products Selector (246.51 KB)
DataFlash®-L: Page Erase Serial Flash Product Overview (222.93 KB)
Longevity Program (29.68 KB)
Product Change Notifications (29.68 KB)

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Small Page Erase

DataFlash™ SPI Memory Products

Product	Shop
AT45DB641E	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DB321E	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DQ321	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DQ321 (105°C)	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DB161E	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DQ161	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DB081E	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DB041E	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DB041E (125°C)	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT45DB021E	Digikey	Arrow	Avnet US	Mouser	Future Electronics

Micron M25PE Replacements Products

Product	Shop
AT25PE16	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT25PE80	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT25PE40	Digikey	Arrow	Avnet US	Mouser	Future Electronics
AT25PE20	Digikey	Arrow	Avnet US	Mouser	Future Electronics

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Memory Products FAQ

8 hours ago

AT25DF321A-SH-B Interchangeability

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AT25DF

4 days ago

AT45DB041E FLASH_ERASE_WRITE_PAGE

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Speed of SCK in AT25DF641A-SH-B

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64Mb

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Smallest erase size

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3 weeks ago

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1 month ago

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Max Flash memory size for DA14531

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