EFM8UB2 Datasheet, PDF (37/50 Pages) Silicon Laboratories – The EFM8UB2 highlighted features are listed below

7.2 QFP48 PCB Land Pattern
EFM8UB2 Data Sheet
QFP48 Package Specifications
Dimension
C1
C2
E
X1
Y1
Figure 7.2. QFP48 PCB Land Pattern Drawing
Table 7.2. QFP48 PCB Land Pattern Dimensions
Min
Max
8.30
8.40
8.30
8.40
0.50 BSC
0.20
0.30
1.40
1.50
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.2 | 36