SI4X55-C Datasheet, PDF (38/39 Pages) Silicon Laboratories – Preamble sense mode

Si4x55-C
11. Top Marking
11.1. Si4x55 Top Marking
Figure 22. Si4x55 Top Marking
11.2. Top Marking Explanation
Mark Method:
Line 1 Marking:
Line 2 Marking:
Line 3 Marking:
Laser
Part Number
455A = Si4455-C2A
055A = Si4055-C2A
355A = Si4355-C2A
Firmware Revision
A = C2A
TTTT = Trace Code
Internal tracking number
Circle = 0.5 mm Diameter
(Bottom-Left Justified)
Y = Year
WW = Workweek
Assigned by the Assembly House. Corresponds to the last
significant digit of the year and work week of the mold date.
38
Rev 1.0