Sunsea AIoT SimCom SIM7090G User Manual page 16

2.2. Pin Description
Table 4: IO parameters definition
Pin type Description
PI Power input
PO Power output
AI
Analog input
AIO Analog input/output
I/O Bidirectional input /output
DI
Digital input
DO Digital output
DOH Digital output with high level
DOL
Digital output with low level
PU Pull up
PD Pull down
OD
Open Drain
Table 5: Pin description
Pin
Pin name
No.
Power supply
VBAT 19,20
VDD_EXT 21
22,23,
24,25,
27,28,
30,31,
43,52,
53,54,
GND 55,56,
58,65,
66,73,
74,75,
84,85,
86,88,
89
System Control
PWRKEY
46
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Default
Description
status
Power supply, voltage range:
PI
2.7V～4.8V.
LDO power output 1.8V for
PO other external circuits with
Max 50mA current output.
Ground
System power on/off control
DI,PU input, active low.
The efficient input low level
SIM7090G User Manual V1.01
Comment
This power supple only use
for external GPIO pulling up
or level shift circuit.
If unused, keep it open.
The level is 1.5V when this
PIN is floating;
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