SDAA393 June   2026 AM2431 , AM2432 , AM2434

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Functional Safety Fundamentals
    1. 1.1 What is Functional Safety
    2. 1.2 Causality Chain from Fault to Harm
    3. 1.3 Core Problems Addressed by Functional Safety
  5. 2Safety Standards and Grade Classification
    1. 2.1 Major Safety Standard Systems
    2. 2.2 Functional Safety in Industrial Communication (FSoE)
    3. 2.3 Safety Grade Indicator System
      1. 2.3.1 IEC 61508 - Safety Integrity Level (SIL)
      2. 2.3.2 ISO 13849-1 - Performance Level (PL) and Category (CAT)
  6. 3System Safety Goal Decomposition
    1. 3.1 HARA Process and Safety Goal Definition
    2. 3.2 Safety Goal Decomposition and ASIL/SIL Assignment
    3. 3.3 Concrete Application of System-Level Decomposition
    4. 3.4 Role and Responsibility Division
  7. 4TI Chip Safety Architecture
    1. 4.1 MCU-Level Safety Architecture
    2. 4.2 Integrated Safety Mechanisms/Technology in TI MCU/MPU
      1. 4.2.1 Freedom From Interference (FFI) Design
      2. 4.2.2 Memory Protection and ECC Technology
      3. 4.2.3 Other Integrated Safety Mechanisms
  8. 5Functional Safety PLC Architecture Design
    1. 5.1 Necessity and Application Scenarios of Functional Safety PLC
    2. 5.2 Functional Safety PLC Architecture Design
    3. 5.3 Design Implementation Cases
    4. 5.4 TI Functional Safety Design Resources
  9. 6Summary
  10. 7References

4.2.3 Other Integrated Safety Mechanisms

Figure 12 Other mechanisms in TI MCU/MPU

Safety Mechanism Description Detected Content Coverage
ECC/EDAC Error Detection and Correction Single-bit flips in memory High
Memory Protection Unit (MPU) Prevents unauthorized access Stack overflow, buffer overflow, illegal access Medium
Watchdog (WD) Processor hang detection CPU dead loop, system stuck High
Dual Clock Comparator (DCC) Clock anomaly detection Clock frequency deviation High
Error Signaling Module (ESM) Centralized fault management Routes all diagnostic faults and responses Very High
Power-on Reset (POR/BOR) Power supply monitoring Abnormal voltage conditions Medium