qubianbig
Newbie level 5
Hi, All,
when our chip run the first 1 or 2 time of ATPG chain test, it can pass. but after several run, tens of pins report failed.
We have try 5-10 chip, it looks behave the same. and we bring these chip back to our lab, the function test of these chip still can pass.
is anyone have similar experience of this kinds of phenomenon. please throw some light on this.
3ks
Regards
Qu
when our chip run the first 1 or 2 time of ATPG chain test, it can pass. but after several run, tens of pins report failed.
We have try 5-10 chip, it looks behave the same. and we bring these chip back to our lab, the function test of these chip still can pass.
is anyone have similar experience of this kinds of phenomenon. please throw some light on this.
3ks
Regards
Qu