False and Multicycle paths stuck-at ATPG

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priyutiru

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Hi,

During stuck-at testing, what will happen to false and multicycle paths from the functional logic. Will stuck-at testing take them as faults? How does ATPG tool handle false and multicycle paths?
 

Often, the false and multi-cycle paths from functional mode aren't relevant in scan mode, as scan will be run at a different (lower) frequency, without those constraints.
 

False paths are not covered in ATPG as those paths are not accesses.
Multi-cycle paths are covered by some ATPG techniques called sequential ATPG engine.
STA team also need to take care false path and multi-cycle path during testing timing closure.
 
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