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Can latches be part of scan chains, please explain.

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kiranks9

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latches in DFT

Can latches be part of scan chains, explain.
 

Re: latches in DFT

latches are very often part of a scan chain, but most commonly as "lock-up latches" that occur between clock domains, to guard against hold time violations in scan shift mode.

If you're curious and want more answers, go to DFT Forum - many DFT folks hang out there.

for DFT talk/info go to:
DFT Digest
DFT Forum
 

Re: latches in DFT

kiranks9 said:
Can latches be part of scan chains, explain.
Click to expand...

yes.. if you design is latch based then you can implement the LSSD style scan instead of mux-scan.
 

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