SI4464 Datasheet, PDF (53/56 Pages) Silicon Laboratories – HIGH-PERFORMANCE

13. Top Marking
13.1. Si4464/63/61/60 Top Marking
Si4464/63/61/60
13.2. Top Marking Explanation
Mark Method
Line 1 Marking
Line 2 Marking
Line 3 Marking
YAG Laser
Part Number
TTTTT = Internal Code
YY = Year
WW = Workweek
44641B = Si4464 Rev 1B¹
44631B = Si4463 Rev 1B¹
44611B = Si4461 Rev 1B¹
44601B = Si4460 Rev 1B¹
Internal tracking code.²
Assigned by the Assembly House. Corresponds to the last
significant digit of the year and workweek of the mold date.
Notes:
1. The first letter after the part number is part of the ROM revision. The last letter indicates the firmware
revision.
2. The first letter of this line is part of the ROM revision.
Rev 1.2
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