thats the catch...it is NOT a mistake by TSMC if they are as spondoolies said 'within spec' just at the low end of that ...I"m sure if they were truely out of spec
spondoolies would have other options....such stuff is likely written by TSMC to benifit them in slippage one direction or the other on performance anyway imho.
Searing
Isn't a small batch made up first for testing before throwing in the towel for mass production? I thought that's how products are made, no?