industry news
Subscribe Now

Express Logic’s ThreadX® SMP Certified For Use in Safety-Critical IoT Systems

Certification Makes ThreadX SMP Ideal Choice for Applications That Must Meet Stringent Safety Standards

San Diego, CA — January 16, 2018 — Express Logic, Inc. , the worldwide leader in industrial grade real-time operating systems (RTOSes), today announced that its popular ThreadX® SMP RTOS has achieved the highest level of SGS-TÜV Saar certification for embedded development in safety-critical systems using symmetric multicore processing architectures. SGS-TÜV Saar, a joint venture of Germany’s SGS Group and TÜV Saarland, is the world’s leading accredited, independent company for testing, auditing, verifying, and certifying embedded software for safety-related systems.

During the certification process, SGS-TÜV Saar evaluated the relevant parts of Express Logic’s modified waterfall development process for ThreadX SMP, with phase overlap and phase blending, to ensure that best development practices were followed during these phases:

  • Requirements management
  • Design
  • Implementation
  • Verification
  • Maintenance

Using an extensive test suite, SGS-TÜV Saar rigorously reviewed all testing and features of ThreadX SMP. The ThreadX SMP test suite, composed of a large number of application simulations, effectively performs functional “black box” testing over the entire ThreadX SMP RTOS. The testing exercises 100 percent of the generic ThreadX SMP C code, including 100 percent branch coverage. Express Logic’s ThreadX SMP safety manual documents these quality assurance measures.

This certification ensures compliance with the industrial safety standard IEC 61508 and all standards derived from it, including IEC 61508 SIL 4, IEC 62304 Class C, ISO 26262 ASIL D, and EN 50128 SW-SIL 4. As these standards are used to ensure the functional safety of electrical, electronic, and programmable electronic safety-related medical devices, process control systems, industrial machinery, and railway control systems, compliance with them makes ThreadX SMP ideal for use in the development of safety-critical IoT devices.

ThreadX SMP is based on Express Logic’s high-performance ThreadX RTOS, a small, highly efficient embedded OS that minimizes system overhead and provides lightning-fast, real-time response. With a memory footprint as small as 10KB and sub-microsecond interrupt response and context switch, ThreadX SMP enhances symmetric multicore architectures from ARM, Intel, NXP, MIPS, and Synopsys while retaining hard real-time responsiveness. ThreadX SMP is the ideal RTOS for demanding real-time applications where high efficiency and high performance are essential. ThreadX SMP provides developers with a combination of performance and ease of use that can dramatically reduce time to market.

“This certification provides the most meaningful evidence of the exceptionally high quality of our ThreadX SMP solution,” said William E. Lamie, President, Express Logic. “With this SGS-TÜV Saar certification, companies using ThreadX SMP can simplify their certification process, save time and money, and reduce risk.”

About Express Logic and ThreadX

Headquartered in San Diego, CA, Express Logic, Inc., offers the industry’s most advanced run-time solutions for deeply embedded applications, including the popular ThreadX® RTOS, the high-performance NetX™ and NetX Duo™ embedded TCP/IP stacks, the FileX® embedded FAT compatible file system, the USBX™ Host/Device USB embedded protocol stack, and the GUIX™ embedded graphical user interface development toolkit. Most products from Express Logic include full source-code and have no run-time royalties. For more information about Express Logic solutions, please visit www.expresslogic.com, call 1-888-THREADX, or e-mail sales@expresslogic.com.

Leave a Reply

featured blogs
Apr 24, 2026
A thought experiment in curiosity, confusion, and cosmic consequences....

featured paper

Quickly and accurately identify inter-domain leakage issues in IC designs

Sponsored by Siemens Digital Industries Software

Power domain leakage is a major IC reliability issue, often missed by traditional tools. This white paper describes challenges of identifying leakage, types of false results, and presents Siemens EDA’s Insight Analyzer. The tool proactively finds true leakage paths, filters out false positives, and helps circuit designers quickly fix risks—enabling more robust, reliable chip designs. With detailed, context-aware analysis, designers save time and improve silicon quality.

Click to read more

featured chalk talk

Connecting the World Through Space
Sponsored by Mouser Electronics and Qorvo
In this episode of Chalk Talk, Ryan Jennings from Qorvo and Amelia Dalton explore the critical components and design challenges inherent in LEO satellite infrastructure and how Qorvo’s solutions are enabling the next generation of space-based connectivity. 
Mar 30, 2026
25,375 views