Term · Automotive
Lockstep core
Two CPU cores executing identical instruction streams with a small delay, their outputs compared cycle by cycle so that any divergence signals a fault. It gives high diagnostic coverage for random hardware failures without software overhead.
- Also known as
- Dual-core lockstep, DCLS
- Type
- Term
- Domain
- Automotive, Functional safety
Notes
Delayed lockstep with physically offset cores protects against common-cause faults such as voltage droop or a single particle strike.
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Part of the Automotive glossary, with every term in the topic and the lifecycles, tools and standards that use them.
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