EFM8SB1 Datasheet, PDF (25/55 Pages) Silicon Laboratories – The EFM8SB1 highlighted features are listed below

6. Pin Definitions
6.1 EFM8SB1x-QFN20 Pin Definitions
EFM8SB1 Data Sheet
Pin Definitions
P0.1 ¹
P0.0 ²
GND 3
VDD 4
RSTb / C2CK 5
P2.7 / C2D ₆
20 pin QFN
(Top View)
GND
16 _P0.6
15 _P0.7
14 P1.0
13 P1.1
12 GND
11 ^P1.2
Figure 6.1. EFM8SB1x-QFN20 Pinout
Pin
Number
1
Pin Name
P0.1
2
P0.0
Table 6.1. Pin Definitions for EFM8SB1x-QFN20
Description
Multifunction I/O
Multifunction I/O
Crossbar Capability
Yes
Yes
Additional Digital
Functions
P0MAT.1
INT0.1
INT1.1
P0MAT.0
INT0.0
INT1.0
Analog Functions
ADC0.1
CS0.1
AGND
CS0.0
VREF
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