dzkxybx
Newbie level 3
hi all,
my asic failed in SCAN test in both DC and AC mode.
the teat pattern failed from pattern NO 2. and some patterns failed at all their cycles.
my STA and post simulation is all passed.
i'v tried increase voltage, slow down clock frequence, but no there isn't any improvement.
can any body tell me what is the most likely cause for this issue? thanks.
- - - Updated - - -
the scan failure is same between different chips and test clock frequence.
my asic failed in SCAN test in both DC and AC mode.
the teat pattern failed from pattern NO 2. and some patterns failed at all their cycles.
my STA and post simulation is all passed.
i'v tried increase voltage, slow down clock frequence, but no there isn't any improvement.
can any body tell me what is the most likely cause for this issue? thanks.
- - - Updated - - -
the scan failure is same between different chips and test clock frequence.