
5G Module Series
RM502Q-GL Hardware Design
RM502Q-GL_Hardware_Design 21 / 77
Keep all NC, reserved and unused pins unconnected.
3.3. Power Supply
The following table shows pin definition of VCC pins and ground pins.
Table 5: Definition of VCC and GND Pins
3.3.1. Decrease Voltage Drop
The power supply range of the module is from 3.135 V to 4.4 V. Please ensure that the input voltage will
never drop below 3.135 V, otherwise the module will be powered off automatically. The following figure
shows the maximum voltage drop during radio transmission in 3G/4G/5G networks.
71
GND
GND
Ground
72
3.3 V
VCC
PI
Power supply
Vmin = 3.135 V
Vnorm = 3.7 V
Vmax = 4.4 V
73
GND
GND
Ground
74
3.3 V
VCC
PI
Power supply
Vmin = 3.135 V
Vnorm = 3.7 V
Vmax = 4.4 V
75
CONFIG_2
CONFIG_2
DO
Not connected internally
Pin No.
Pin Name
I/O
Power Domain Description
2, 4, 70, 72, 74
VCC
PI
3.135-4.4 V
3.7 V typical DC supply
3, 5, 11, 27, 33,
39, 45, 51, 57, 71, 73
GND
Ground
NOTE
、