Quectel EG91 Series Hardware Design page 30

ADC0 24
SPI Interface
Pin Name Pin No.
SPI_CLK 26
SPI_MOSI 27
SPI_MISO 28
RF Interfaces
Pin Name Pin No.
49
(EG91-
NA/-NS/
ANT_GNSS -VX/-EX/
-NAX/-N
AXD/
-AUX)
49
(EG91-E)
56
ANT_DIV
(EG91-
NA/-NS/
-VX/-EX/
-NAX/-N
AXD)
ANT_MAIN 60
Other Pins
Pin Name Pin No.
AP_READY 19
EG91_Series_Hardware_Design
General-purpose
AI analog to digital
converter
I/O Description
Clock signal of SPI
DO
interface
Master output slave
DO input of SPI
interface
Master input slave
DI output of SPI
interface
I/O Description
AI GNSS antenna pad
Receive diversity
AI
antenna pad
IO Main antenna pad
I/O Description
DI Application
LTE Standard Module Series
EG91 Series Hardware Design
Voltage range:
0.3V to VBAT_BB
DC Characteristics
V max=0.45V
OL
V min=1.35V
OH
V max=0.45V
OL
V min=1.35V
OH
V min=-0.3V
IL
V max=0.6V
IL
V min=1.2V
IH
V max=2.0V
IH
DC Characteristics
DC Characteristics
V min=-0.3V
IL
If unused, keep it
open.
Comment
1.8V power domain.
If unused, keep it
open.
1.8V power domain.
If unused, keep it
open.
1.8V power domain.
If unused, keep it
open.
Comment
50Ω impedance.
If unused, keep it
open.
The pin is defined as
ANT_DIV on
EG91-E.
50Ω impedance.
If unused, keep it
open.
Pin 56 is reserved on
EG91-E.
50Ω impedance.
Comment
1.8V power domain.
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