Sunsea AIoT SimCom SIM7090G User Manual page 42

3.13 GPIO Interface
The module provides three general-purpose input and output (GPIO) interfaces.
Table 23: Pin Definition of GPIO Interfaces
Pin Name Pin No.
GPIO1
87
GPIO33 33
GPIO57 57
Table 24: Logic Levels of GPIO Interfaces
Parameter
V
IL
V
IH
V
OL
V
OH
3.14 RF control Interface
SIM7090G provides a set of antenna GRFC dedicated signals lines. It can be used to control the antenna
tuner to improve antenna performance.
The reference circuit is shown in the following figure:
3.15 Force USB Download Interface
www.simcom.com
I/O Description
IO General-purpose input and output interface
IO General-purpose input and output interface
IO General-purpose input and output interface
Min.
-0.3
1.2
0
1.35
Figure 23：RF control interface reference circuit
SIM7090G User Manual V1.01
Max.
0.6
2.0
0.45
1.8
Comment
1.8V power domain.
1.8V power domain.
1.8V power domain.
Unit
V
V
V
V
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