W81282F Datasheet, PDF (16/18 Pages) Winbond – USB Keyboard Controller with 4 Ports Hub

9. HOW TO READ THE TOP MARKING
Example: The top marking of W81282F-05
inbond
W81282F-05
732AC27242968
1st line: Winbond logo
2nd line: the type number: W81282F-05
3rd line: the tracking code: 732 A C 2 7242968
732: packages made in '97, week 19
A: assembly house ID; A means ASE, S means SPIL ... etc
C: IC revision; B means version B, C means version C
2: wafers manufactured in Winbond FAB 2
7242968: wafer production series lot number
W81282F
PRELIMINARY
Publication Release Date: Aug. 1999
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Revision 0.5