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It is recommended to use a host GPIO to control FULL_CARD_POWER_OFF#. A simple reference circuit
is illustrated by the following figure.
Host
GPIO
NOTE: The voltage of pin 6 should be no less than 1.19 V when it is at HIGH level.
The timing of turn-on scenario is illustrated by the following figure.
VCC
FCPO#
RESET#
RFFE_VIO_1V8
USIM_VDD
Module Status
NOTE: To turn on the module, the host only needs to control FCPO#.
RM502Q-GL_Hardware_Design
1.8 V or 3.3 V
Figure 8: Turn on the Module with a Host GPIO
Module power-on or insertion detection
System turn-on and booting
T
VCC-RST#
Inactive
T
T
power-on
turn-on
Figure 9: Turn-on Timing of the Module
FULL_CARD_POWER_OFF#
20 s
System booting
T
booting
5G Module Series
RM502Q-GL Hardware Design
Module
6
R1
100k
3.7 V
≥ 1.19 V
V
IH
1.8 V
1.8 V
1.8 V or 3.0 V
T
registering
PMU
Active
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