SafeTTy Systems™

At SafeTTy Systems, we help our customers to create software for products that are reliable, secure and safe, and in compliance (where required) with one or more international safety standards: IEC 61508, ISO 26262, DO-178C, IEC 62304, IEC 60730 …

We employ an industry-proven engineering process that integrates ‘Time-Triggered‘ (TT) software architectures with patented run-time monitoring techniques.

The designs that we work on are typically based on low-cost, off-the-shelf microcontrollers, provided by a range of different semiconductor manufacturers (we are not tied to any particular hardware platform).

We offer:

We also offer:

We are a UK company with a worldwide customer base.

Our customers operate in a wide range of sectors: space, automotive (including autonomous vehicles), industrial control, rail, medical, sports equipment …



What’s different about our approach?

At SafeTTy Systems:

  • we specialise in the engineering of very simple software designs for high-reliability embedded systems;
  • keeping the designs simple allows us to model them (at design time) and monitor them (at run time);
  • our modelling and monitoring process allows us to provide clear evidence that the systems we support will meet their requirements.

Many of our our customers apply our technology to build a complete ‘TT System‘.

In other cases, our customers use our technology to build a ‘TT Wrapper‘: this is a monitoring unit that is used to improve confidence in the safe operation of a (pre-existing) complex component or system.

Some of our customers build ‘bare metal‘ systems; others use our technology to integrate and monitor designs that incorporate a conventional ‘Real-Time Operating System‘ (RTOS).

Learn more about our technology …



Want to learn how the use of our technology can benefit your business?

The industry-proven development process that we follow in our projects is outlined in our popular ‘ERES2‘ book.

The case studies in ERES2 describe the development of software for the following products: [i] an industrial alarm sounder unit (IEC 61508, SIL 2); [ii] a domestic washing machine (IEC 60730, Class B); [iii] a hospital radiotherapy machine (IEC 60601-1; IEC 62304, Class C); [iv] a steering-column lock for a passenger car (ISO 26262, ASIL D); and [v] an aircraft jet engine (DO-178C, Level A).

You’ll find further information on the ERES2 page.



Our ‘ERES2’ book is accompanied by a growing suite of public ‘Time-Triggered Reference Designs‘ (TTRDs).

Used in conjunction with the book, these code examples are designed to illustrate ways in which TT software architectures can be used to support the development of a wide range of embedded systems for which safety is a key design consideration.

The latest suite of public TTRDs can be downloaded from our TTRD page.



– Learn more about our Company – Learn more about our Technology – Visit our News page – Read our Technical Blog

– Investigate our specialised Evaluation Hardware for safety-related systems –

– Learn about our Training Courses and the SafeTTy Certified™ programme –