EFM8BB3 Datasheet, PDF (50/70 Pages) Silicon Laboratories – The EFM8BB3 device family are fully integrated, mixed-signal system-on-a-chip MCUs. Highlighted features are listed below

Pin
Number
24
Pin Name
P0.4
Description
Multifunction I/O
Crossbar Capability
Additional Digital
Functions
Yes
P0MAT.4
INT0.4
INT1.4
UART0_TX
CLU0A.10
CLU1A.8
EFM8BB3 Data Sheet
Pin Definitions
Analog Functions
ADC0.2
CMP0P.2
CMP0N.2
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