EFM8UB1 Datasheet, PDF (39/59 Pages) Silicon Laboratories – The EFM8UB1 highlighted features are listed below

Pin
Number
3
Pin Name
P0.0
4
GND
5
D+
6
D-
7
VIO
8
VDD
9
VREGIN
10
P3.1
11
RSTb /
C2CK
12
P2.0 /
C2D
13
P1.6
14
P1.5
15
P1.4
16
P1.3
17
P1.2
18
P1.1
Description
Multifunction I/O
Crossbar Capability
Additional Digital
Functions
Yes
P0MAT.0
INT0.0
INT1.0
Ground
USB Data Positive
USB Data Negative
I/O Power Input
Supply Power Input /
5V Regulator Output
5V Regulator Input
Multifunction I/O
Active-low Reset /
C2 Debug Clock
Multifunction I/O /
Yes
C2 Debug Data
Multifunction I/O
Yes
VBUS
P1MAT.6
Multifunction I/O
Yes
P1MAT.5
Multifunction I/O
Yes
P1MAT.4
Multifunction I/O
Yes
P1MAT.3
Multifunction I/O
Yes
Multifunction I/O
Yes
P1MAT.2
I2C0_SCL
P1MAT.1
I2C0_SDA
EFM8UB1 Data Sheet
Pin Definitions
Analog Functions
ADC0.0
CMP0P.0
CMP0N.0
VREF
ADC0.28
ADC0.29
ADC0.14
CMP1P.9
CMP1N.9
ADC0.13
CMP1P.7
CMP1N.7
ADC0.12
CMP1P.6
CMP1N.6
ADC0.11
CMP1P.5
CMP1N.5
ADC0.10
CMP1P.4
CMP1N.4
ADC0.9
CMP1P.3
CMP1N.3
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