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71
GND
72
3.3 V
73
GND
74
3.3 V
75
CONFIG_2
NOTE
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
Pin No.
2, 4, 70, 72, 74
3, 5, 11, 27, 33,
39, 45, 51, 57, 71, 73
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.
RM502Q-GL_Hardware_Design
GND
VCC
GND
VCC
CONFIG_2
Pin Name
I/O
VCC
PI
GND
Ground
PI
Power supply
Ground
PI
Power supply
DO
Not connected internally
Power Domain
3.135-4.4 V
5G Module Series
RM502Q-GL Hardware Design
Vmin = 3.135 V
Vnorm = 3.7 V
Vmax = 4.4 V
Vmin = 3.135 V
Vnorm = 3.7 V
Vmax = 4.4 V
Description
3.7 V typical DC supply
Ground
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