EFM8UB2 Datasheet, PDF (24/50 Pages) Silicon Laboratories – The EFM8UB2 highlighted features are listed below

Pin
Number
18
Pin Name
P4.4
Description
Multifunction I/O
19
P4.3
Multifunction I/O
20
P4.2
21
P4.1
22
P4.0
Multifunction I/O
Multifunction I/O
Multifunction I/O
23
P3.7
Multifunction I/O
24
P3.6
25
P3.5
Multifunction I/O
Multifunction I/O
26
P3.4
Multifunction I/O
27
P3.3
28
P3.2
29
P3.1
Multifunction I/O
Multifunction I/O
Multifunction I/O
30
P3.0
Multifunction I/O
31
P2.7
Multifunction I/O
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Crossbar Capability
Additional Digital
Functions
EMIF_D4
EMIF_AD4m
EMIF_D3
EMIF_AD3m
EMIF_D2
EMIF_AD2m
EMIF_D1
EMIF_AD1m
EMIF_D0
EMIF_AD0m
Yes
EMIF_A7
EMIF_A15m
Yes
EMIF_A6
EMIF_A14m
Yes
EMIF_A5
EMIF_A13m
Yes
EMIF_A4
EMIF_A12m
Yes
EMIF_A3
EMIF_A11m
Yes
EMIF_A2
EMIF_A10m
Yes
EMIF_A1
EMIF_A9m
Yes
EMIF_A0
EMIF_A8m
Yes
EMIF_A15
EFM8UB2 Data Sheet
Pin Definitions
Analog Functions
ADC0P.13
ADC0N.13
CMP0N.3
ADC0P.12
ADC0N.12
CMP0P.3
ADC0P.33
ADC0N.33
ADC0P.32
ADC0N.32
ADC0P.11
ADC0N.11
CMP1N.2
ADC0P.10
ADC0N.10
CMP1P.2
ADC0P.29
ADC0N.29
ADC0P.9
ADC0N.9
CMP0N.2
ADC0P.8
ADC0N.8
CMP0P.2
ADC0P.28
ADC0N.28
ADC0P.27
ADC0N.27
ADC0P.7
ADC0N.7
CMP1N.1
ADC0P.6
ADC0N.6
CMP1P.1
ADC0P.26
ADC0N.26
Rev. 1.2 | 23