Quectel LTE-A Series Hardware Design page 22

VDD_P2 135
VDD_EXT 168
VDD_RF 162
10, 13, 16, 17,
24, 30, 31, 35,
39, 44, 45, 54,
55, 63, 64, 69,
70, 75, 76,
81~84, 89, 90,
92~94, 96~100,
102~106,
108~112,
GND 114~118,
120~126,
128~133, 141,
142, 148, 153,
154, 157, 158,
167, 174, 177,
178, 181, 184,
187, 191, 196,
202~208,
214~299
Turn on/off
Pin Name Pin No.
RESET_N 1
PWRKEY 2
EG18_Hardware_Design
SD card power
PI supply
Provide 1.8V for
PO
external circuit.
Provide 2.85V for
PO
external RF circuit.
Ground
I/O Description
DI Reset the module
Turn on/off the
DI
module
LTE-A Module Series
EG18 Hardware Design
Vnorm=1.8V
I max=50mA
O
Vnorm=2.85V
I max=120mA
O
DC Characteristics
V max=2.1V
IH
V min=1.3V
IH
V max=0.5V
IL
V max=2.1V
IH
V min=1.3V
IH
V max=0.5V
IL
If an SD card is
used, connect
VDD_P2 to
SD_VDD.
If an eMMC* is used
or SDIO interface is
unused, connect
VDD_P2 to
VDD_EXT.
Comment
1.8V power domain.
Pulled up internally.
Active low.
1.8V power domain.
Pulled up internally.
Active low.
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