Product Info

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 28 / 83
VCC
FULL_CARD_POWER_OFF#
RUNNING OFF
Module Status
Power-off procedure
RESET_N(H)
≥10 s
Figure 8: Turn-off Timing through FULL_CARD_POWER_OFF#
3.5.2.2. Turn off the Module through AT Command
It is also a safe way to use AT+QPOWD command to turn off the module. For more details about the
command, see document [2].
The module is designed to be turned on with a host GPIO. Pull down FULL_CARD_POWER_OFF# pin
after the module’s USB/PCIe is removed. Otherwise, the module will be powered on again.
VCC
FULL_CARD_POWER_OFF#
RUNNING OFF
Module Status
Turn off procedure
RESET_N(H)
USB/PCIe
AT+QPOWD
USB/PCIe
removed
Figure 9: Turn-off Timing through AT Command and FULL_CARD_POWER_OFF#
Please pull down FULL_CARD_POWER_OFF# pin immediately or cut off the power supply VCC when
the host detects that the module USB/PCIe is removed.
NOTE