SPRADK2A November   2024  – October 2025 F29H850TU , F29H859TU-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Supplemental Online Information
  6. 3 SSU Overview
  7. 4 Key Concept Definitions
  8. 5 Safety and Security Goals
  9. 6 System Design
  10. 7 Configuring the SSU
    1. 7.1 Flash SECCFG Region
    2. 7.2 SSU Development Life Cycle
    3. 7.3 Using the SysConfig Tool
      1. 7.3.1 Enabling System Security Configuration
      2. 7.3.2 Configuring Application Modules
      3. 7.3.3 Configuring Special Modules
        1. 7.3.3.1 LINK2 Configuration
        2. 7.3.3.2 LINK1 Configuration
        3. 7.3.3.3 Common Code Link Configuration
      4. 7.3.4 Defining Sandboxes
      5. 7.3.5 Adding Shared Memory
  11. 8 Debug Authorization
    1. 8.1 Password-Based Unlock
  12. 9 Debugging the SSU
    1. 9.1 Debugging Build Errors
    2. 9.2 Debugging Runtime Errors
  13. 10SSU Frequently Asked Questions (FAQ)
  14. 11Summary
  15. 12References
  16. 13Revision History

Abstract

The Safety and Security Unit (SSU) is an integrated module in F29x devices that enables run-time functional safety and cybersecurity protections for application code. The features of the SSU enable robust Freedom from Interference (FFI), secure task isolation, debug security and firmware update protections in hardware, maintaining low-latency performance needed for real-time control systems. The SysConfig tool, provided as part of the F29 SDK, provides an easy-to-use graphical user interface (GUI) for configuring the SSU and enabling safety and security protections in user applications. This application note examines the various features of the SSU, and how embedded system developers can use the SSU Tool within SysConfig to design and implement run-time safety and security in real-time applications.