UC-08-M31 EN R1.0 UM982 Peripheral Design 15
Figure 6-2 UM982 Peripheral Circuit
The GND pads at the bottom of the module should be grounded to ensure heat dissipation.
The UM982eb has copper exposed on the bottom of the UM982 module, which not only
enhances heat dissipation, but also provides a large area for grounding and is convenient
to test.