EFM32WG880 Datasheet, PDF (73/85 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

...the world's most energy friendly microcontrollers
5 PCB Layout and Soldering
5.1 Recommended PCB Layout
Figure 5.1. LQFP100 PCB Land Pattern
a
p8
p7
p1
p6
b
e
c
p2
p5
p3
p4
d
Table 5.1. QFP100 PCB Land Pattern Dimensions (Dimensions in mm)
Symbol
a
b
c
d
e
Dim. (mm)
1.45
0.30
0.50
15.40
15.40
Symbol
P1
P2
P3
P4
P5
Pin number
1
25
26
50
51
Symbol
P6
P7
P8
-
-
Pin number
75
76
100
-
-
2014-06-13 - EFM32WG880FXX - d0197_Rev1.40
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