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EXTERNAL
NXP, THE NXP LOGO AND NXP SECURE CONNECTIONS FOR A SMARTER WORLD ARE TRADEMARKS OF NXP B.V.
ALL OTHER PRODUCT OR SERVICE NAMES ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS. © 2020 NXP B.V.
O C T O B E R 2 0 2 0
Pat Stilwell
Functional Safety Manager
Functional Safety Industrial
and Automotive Concepts
of the i.MX 8/8X Families
of Applications Processors
1
EXTERNAL
AGENDA
• Functional Safety Introduction
• ISO 26262 Introduction
• Safety Integrity Levels
• Safety Mechanisms
• NXP Approach to ISO26262
• Customer Documents
• NXP Community
2
EXTERNAL
i.MX 7 family
i.MX 8 family
Safety Certifiable & Efficient Performance
Flexible Efficient Connectivity
ARM
®
v7-A
i.MX 8M family
i.MX 8X family
Advanced Computing, Audio/Video & Voice
Advanced Graphics & CPU Performance
i.MX 7ULP family
Ultra Low Power with Graphics
ARM
®
v8-A (32-bit/ 64-bit)
ARM
®
v7-A (32-bit)
i.MX 6QuadPlus
i.MX 6Dual
i.MX 6Solo
i.MX 6DualLite
i.MX 6SoloLite
i.MX 6SoloX
i.MX 6UltraLite
i.MX 6DualPlus
i.MX 6Quad
i.MX 6SLL
i.MX 6ULL
i.MX APPLICATIONS PROCESSOR SCALABILITY
M4
A7
M4
A53
M4
A35
M4
A53
A72
Pin-to-pin Compatible
Software Compatible
M4
A9
A9
A7
3
EXTERNAL
WHY DOES AUTO NEED FUNCTIONAL SAFETY?
• Higher integration and system complexity
• Safety requirements established in non-traditional markets, e.g. solar energy
• Increase in use of high-performance systems and results in substantially higher MPU
performance requirements
• Protect equipment against dangerous random failures or malfunction
• Reduce warranty or litigation costs by aligning to safety standards (ISO 26262)
• Need for understanding faults vs. failure modes
4
EXTERNAL
FUNCTIONAL SAFETY BASIC CONCEPTS
• All systems will have some inherent, quantifiable failure rate. It is not possible to develop a system
with zero failure rate.
• For each application, there is some tolerable failure rate which does not lead to unacceptable risk.
• Acceptable failure rates vary per application, based on the potential for direct or indirect physical
injury in the event of system malfunction.
• The hazards and risks of applications can be analyzed and assigned categories based on the level
of acceptable risk. These categories are known as Safety Integrity Levels, or SILs.
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