Quectel EG915U Series - Pin Description

LTE Standard Module Series
EG915U_Series_Hardware_Design 16 / 81
2.5. Pin Description
The following tables show the pin definition of the module.
Table 3: I/O Parameters Definition
Table 4: Pin Description
Type
Description
AI
Analog Input
AO
Analog Output
AIO
Analog Input/Output
DI
Digital Input
DO
Digital Output
DIO
Digital Input/Output
OD
Open Drain
PI
Power Input
PO
Power Output
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
VBAT_BB
32, 33
PI
Power supply for the
module’s baseband part
Vmax = 4.3 V
Vmin = 3.3 V
Vnom = 3.8 V
It must be
provided with
sufficient current
up to 1 A
VBAT_RF
52, 53
PI
Power supply for the
module’s RF part
It must be
provided with
sufficient current
up to 2.5 A
VDD_EXT
29
PO
Provide 1.8 V for
external circuit
Vnom = 1.8 V
I
O
max = 50 mA
Power supply for
external GPIO’s
pull-up circuits.
Add 2.2 μF
bypass capacitor
when in use.