Quectel EG25-GL, Проектирование аппаратного обеспечения

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LTE Standard Module Series
EG25-GL_Hardware_Design 20 / 96
Table 5: Pin Description
Power Supply
Pin Name Pin No. I/O Description DC Characteristics Comment
VBAT_BB 59, 60 PI
Power supply for the
module’s BB part
Vmax = 4.3 V
Vmin = 3.3 V
Vnom = 3.8 V
It must be provided
with sufficient current
up to 0.8 A.
VBAT_RF 57, 58 PI
Power supply for the
module’s RF part
It must be provided
with sufficient current
up to 1.8 A in a burst
transmission.
VDD_EXT 7 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.
If unused, keep it
open.
GND 8, 9, 19, 22, 36, 46, 48, 50
–54, 56, 72, 85–112
Turn On/Off
Pin Name Pin No. I/O Description DC Characteristics Comment
PWRKEY 21 DI
Turn on/off the
module
The output voltage is
0.8 V because of the
diode drop in the
chipset.
RESET_N 20 DI Reset the module
V
IH
max = 2.1 V
V
IH
min = 1.3 V
V
IL
max = 0.5 V
1.8 V power domain.
If unused, keep it
open.
Indication Signals
Pin Name Pin No. I/O Description DC Characteristics Comment
STATUS 61 OD
Indicate the module
’s
operation status
VDD_EXT
The drive current
should be less than
0.9 mA.
An external pull-up
resistor is required. If
unused, keep it open.
NET_MODE 5 DO
Indicate the
module’s
network registration
mode
VDD_EXT
1.8 V power domain.
Cannot be pulled up
before startup.
If unused, keep it
open.