SI4770-77-A20 Datasheet, PDF (53/54 Pages) Silicon Laboratories – HIGH-PERFORMANCE CONSUMER ELECTRONICS

13. Top Marking
13.1. Si4770/77-A20 Top Marking
Si4770/77-A20
13.2. Top Marking Explanation
Mark Method:
Laser
Pin 1 Mark:
Circle = 0.90 mm diameter
(Bottom-Left-Justified)
Font Size:
0.70 mm Right-Justified
Line 1 Mark Format: Device Number
Line 2 Mark Format: TTTTTT = Mfg Code
Line 3 Mark Format: YY = Year
WW = Work Week
4770 = Si4770
4777 = Si4777
A = Part Revision A
20 = Firmware Revision 2.0
Manufacturing Code from the Assembly Purchase
Order Form.
Assigned by the Assembly House. Corresponds to the
year and work week of the assembly date.
Rev. 0.9
53