I had the same question for some 24C02B chips off an logic analyzer, only at the start i didn't know what they were. The markings for those chips was: ATMLH928 02B 1
Another post suggested these were as below, but its a bit inconsistent labeled so take with pinch of salt:
ATMLH[3 digit datecode]
2[some letters]
They seam to be common on branded consumer gear like samsung tvs. cheap.