Winbond TrustME W77Q Secure Flash Obtains Common Criteria EAL2 and ISO 26262 ASIL-C Ready Certifications

By Tiera Oliver

Associate Editor

Embedded Computing Design

August 11, 2021


Winbond TrustME W77Q Secure Flash Obtains Common Criteria EAL2 and ISO 26262 ASIL-C Ready Certifications

Winbond announced that the company's TrustME W77Q Secure Flash has obtained Common Criteria EAL2 and ISO 26262 ASIL-C Ready certifications from SGS Brightsight and SGS-TÜV Saar GmbH, respectively.

With the security and safety certifications, TrustME W77Q Secure Flash is designed to satisfy the demands of safety and cybersecurity simultaneously in automotive applications. According to the company, TrustME W77Q Secure Flash was awarded as the "Outstanding Product Performance of the Year" at the 2020 ASPENCORE World Electronics Achievement Awards (WEAA), and proven to be suitable in a variety of market segments with its comprehensive and end-to-end security for IoT consumer and industrial devices.

W77Q Secure Flash comes in a densities of 16Mb, 32Mb – available now, 64Mb and 128Mb will be available in Q4'2021. W77Q operates at a frequency of 66MHz in Double Transfer Rate mode and 133MHz in Single Transfer Rate mode. It features standard single/dual/quad/QPI serial peripheral interface (SPI), as well as industry-standard packages and pin-outs to facilitate their uses as a drop-in replacement for non-secure SPI NOR Flash devices. Per the company, W77Q Secure Flash is capable of retaining data for over 20 years and can perform 100,000 Program/Erase cycles with a wide operating temperature range of -40°C to 105°C.

Complementary to the host chip, W77Q Secure Flash provides the security features of secure boot code storage and authentication, secure firmware update, remote attestation for building platform Root of Trust and firmware resiliency. These security features are enabled by the below security functions from the perspectives of protection, detection, and recovery:

  • Data confidentiality
  • Data and command authentication
  • Code integrity protection
  • Replay protection
  • Cryptographically secured write protection
  • Secure code update with rollback protection
  • DICE-like attestation mechanism
  • Authenticated Watchdog Timer with an optional hardware reset output
  • Secure firmware over-the-air update, via an end-to-end secure channel between an update authority (a.k.a. OTA server) and the W77Q even when the host processor or SoC has been compromised.

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Tiera Oliver, Associate Editor for Embedded Computing Design, is responsible for web content edits, product news, and constructing stories. She also assists with newsletter updates as well as contributing and editing content for ECD podcasts and the ECD YouTube channel. Before working at ECD, Tiera graduated from Northern Arizona University where she received her B.S. in journalism and political science and worked as a news reporter for the university’s student led newspaper, The Lumberjack.

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