Quectel RG520N-AT - Page 21

5G Module Series
RG520N-AT_Hardware_Design 20 / 109
6
VBAT_RF2 should be connected to an external VBAT power supply while Power Class 1.5 (optional) is designed;
otherwise, it is only used to connect decoupling capacitors.
VBAT_RF1
229, 230,
232, 233
PI
Power supply for
the module’s RF
part
Vmax = 4.4 V
Vmin = 3.3 V
Vnom = 3.8 V
VBAT_RF2
6
107, 109,
110, 112
PI
Power supply for
the module’s RF
part
Vmax = 4.4 V
Vmin = 3.3 V
Vnom = 3.8 V
VDD_WIFI_VL
266, 267
PO
Provides 0.95 V
for Wi-Fi/Bluetooth
modules
Vnom = 0.95 V
I
O
max = 1.7 A
Power supply for
Wi-Fi/Bluetooth
modules.
VDD_WIFI_VM
268
PO
Provides 1.28 V
for Wi-Fi/Bluetooth
modules
Vmax = 1.35 V
Vnom = 1.28 V
I
O
max = 400 mA
VDD_WIFI_VH
269
PO
Provides 1.88 V
for Wi-Fi/Bluetooth
modules
Vnom = 1.88 V
I
O
max = 400 mA
VDD_EXT
66
PO
Provides 1.8 V for
external circuits
Vnom = 1.8 V
I
O
max = 50 mA
Power supply for
external GPIO’s
pull-up circuits.
A test point is
recommended to be
reserved.
GND
12, 18, 26, 33, 42, 84, 90, 96, 113, 115, 116, 118, 119, 122–129, 131–134, 136,
137, 140–147, 149, 151, 152, 154–156, 158, 160, 161, 163, 164, 167–170, 172,
173, 176, 178, 179, 181, 182, 185, 187, 188, 190, 191, 194–197, 200, 202, 203,
205, 206, 209, 211, 212, 214, 215, 224, 226, 227, 228, 231, 234, 299–392
Turn On/Off
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
PWRKEY
7
DI
Turns on/off the
module
1.8 V high level
Internally pulled up
to 1.8 V.
RESET_N
8
DI
Resets the module
1.8 V
Internally pulled up
to 1.8 V with a 40 kΩ
resistor.
A test point is
recommended to be
reserved if unused.
Status Indication
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment