EM357-RTR datasheet(227/241 Pages) SILABS

Numer części	EM357-RTR

Szczegółowy opis	High-Performance, Integrated ZigBee/802.15.4 System-on-Chip

PDF	241 Pages

Scroll/Zoom	100%

Producent	SILABS [Silicon Laboratories]

Strona internetowa	http://www.silabs.com

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227 / 241 page

Rev 1.3

227

21. Top Marking

Figure 21.1 shows the part marking for the EM35x Series. The circle in the top corner indicates Pin 1. Pins are

numbered counter-clockwise from Pin 1 with 12 pins per package edge.

Figure 21.1. Part Marking for EM35x

Table 21.1. 48-Pin QFN Top Marking Explanation

Mark Method:

Laser

Pin 1 Marking:

Circle = 0.40 mm Diameter

(Top-Left Justified)

Line 1 Marking:

Logo and Device Part Number

Right Justified

Half circle logo. EM35x is the orderable part num-

ber variant (EM357/EM351).

Line 2 Marking:

TTTTTT = Mfg Code

YY=Year

WW-Work Week

Manufacturing Code from the Assembly Purchase

form. Assigned by the Assembly House. Corre-

sponds to the year and work week.

Right Justified

Line 3 Marking:

Circle = 1.3 mm Diameter

Center Justified

Country of Origin

ISO abbreviation

Right Justified

“e3” indicates Sn solder finish.

Line 4 Marking:

ARM

Right Justified

ARM right justified with underline.

EM357-RTR Arkusz danych(PDF) 227 Page - Silicon Laboratories