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W77Q Secure Flash Memory

The W77Q TrustME® Secure Flash memory provides a secure storage solution for systems with limited space, pins and power, that meets Common Criteria EAL 2+ Security Certification requirements.

Winbond's W77Q Secure Flash memory is a drop-in replacement for standard Serial NOR Flash devices, offering security, flexibility, and performance well beyond ordinary NOR Flash devices. It is ideal for secure code storage with support for secure eXecute In Place (XIP), cryptographic key distribution, management and storage, secure data storage, and general data storage.

The W77Q features sophisticated cryptographic encryption of the communication channel, personalization of each device with unique keys, cryptographic read and write locks, protection of data integrity, secure over-the-air (OTA) firmware update, RoT functions, secure read, write and erase operations.

The W77Q series supports Single, Dual and Quad SPI as well as QPI modes of operation, running at up to 133 MHz. Dual Transfer Rate (DTR) is supported at rates up to 66 MHz. 

  • Serial SPI NOR Flash based on the popular W25Q family
    • 100% Drop-in replacement for SPI Flash
  • Advanced security features:
    • Root of trust and secure boot
    • Secure Over-The-Air firmware update
    • Resilience:Protection, detection and recovery
    • Secure data storage
  • Design is based on pure digital logic, no integrated MCU
  • Optimized for cost sensitive platforms
  • Certified secure memory=Trusted and Proven Solution!

Security and Safety assessment by indpendent laboratories


  • ISO 15408 Common Criteria EAL 2+ certified 
  • SESIP Level 2 (with IEC 62443 and NIST 8259A ready)1)
  • ISO 21434 Automotive Cybersecurity certification 1)
  • ISO 26262 ASIL-C ready
  • FIPS 140-3 CAVP (Cryptographic Algorithm Validation Program)


  • ISO 15408 Common Criteria EAL 2+ certified1)
  • SESIP Level 2 (with IEC 62443, NIST 8259A, WP.29 ready) certified1)
  • ISO 21434 Automotive Cybersecurity certification1)
  • ISO 26262 ASIL-C ready1)
  • FIPS 140-3 CMVP (Cryptographic Module Validation Program) L11)

* 1) in progress

End-to-End Security Applications Example


Part No. Voltage Speed Temp. Features Status Industrial
Automotive Industrial
W77Q16JW 1.7-1.95V 104MHz -40℃ ~ 85℃ /
-40℃ ~ 105℃
• Secure Root of Trust (RoT) for IoT devices
• Secure code and data storage
• Secure Over-The-Air (OTA) firmware update with rollback protection
• Platform firmware resiliency assurance
• Local and remote secure-channel, encrypted, authenticated, replay-protected
• Security certifications: Common Criteria EAL 2+, SESIP Level 2 (with IEC 62443 and NIST 8259A ready), ISO 21434, FIPS 140-3 CAVP and safety qualification: ISO 26262 ASIL-C ready
• Other standard features are fully compatible with W25Q16JW.
UD S Contact us

Status:P= Mass Production, S= Samples, UD= Under Development, N= Not Recommended For New Design
All Winbond Flash products are "Green", Halogen-Free and RoHS compliant packaging. Refer to the datasheet for details and specifications.


Technical Documentation


Product Brief

Winbond TrustME® Secure Flash Product Brief

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  • File Type:pdf
  • Updated:20/09/2022

Remote Firmware Update with Winbond's W77Q

  • File Type:Video
  • Updated:24/09/2020

Winbond's W77Q Platform Firmware Resiliency

  • File Type:Video
  • Updated:24/09/2020

Are IoT Devices Secure?

  • File Type:Video
  • Updated:24/09/2020

Winbond TrustME Secure Flash - A Robust and Certifiable Secure Storage Solution

  • File Type:Video
  • Updated:24/09/2020

Winbond embedded world 2018_Security Flash

  • File Type:Video
  • Updated:24/09/2020
Product Brief

TrustME® Secure Flash-W77Q Product Brief

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  • File Type:pdf
  • Updated:11/08/2020

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