Product Info
5G Module Series
RM502Q-GL Hardware Design
RM502Q-GL_Hardware_Design 27 / 77
VCC
FULL_CARD_POWER_OFF#
RUNNING OFF
Module Status
Turn off procedure
RESET_N(H)
USB/PCIe
AT+QPOWD
USB/PCIe
removed
Figure 11: Turn-off Timing through AT Command and FULL_CARD_POWER_OFF#
For the circuit design of Figure 7, please cut off power supply of VCC after the module USB/PCIe is
removed, as illustrated in Figure 11. Otherwise, the module will be powered on again.
VCC
FULL_CARD_POWER_OFF#(H)
RUNNING OFF
Module Status
Turn off procedure
RESET_N(H)
USB/PCIe
AT+QPOWD
USB/PCIe
removed
Figure 12: Turn-off Timing through AT Command and Power Supply
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