EFM8UB2 Datasheet, PDF (44/50 Pages) Silicon Laboratories – The EFM8UB2 highlighted features are listed below

EFM8UB2 Data Sheet
QFN32 Package Specifications
Dimension
Min
Typ
Max
ddd
—
—
0.05
eee
—
—
0.08
Note:
1. All dimensions shown are in millimeters (mm) unless otherwise noted.
2. Dimensioning and Tolerancing per ANSI Y14.5M-1994.
3. This drawing conforms to JEDEC Solid State Outline MO-220, variation VHHD except for custom features D2, E2, and L which
are toleranced per supplier designation.
4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020C specification for Small Body Components.
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