Quectel 5G Module Series - Wi-Fi TE-A Interfaces

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 30 / 86
To avoid damages to the internal flash, DON'T cut off the power supply before the module is completely
turned off by pulling down FULL_CARD_POWER_OFF# pin for more than 7 s, and DON'T cut off power
supply directly when the module is working.
3.3.3. Monitor the Power Supply
AT+CBC command can be used to monitor the voltage value of VCC. For more details, please refer to
document [3].
3.4. Turn on
FULL_CARD_POWER_OFF# (abbreviated as “FCPO#” in this document) asynchronous signal is used to
turn on/off the module. When the input signal is driven HIGH (≥ 1.19 V), the module will turn on.
This input signal is 3.3 V tolerant and can be driven by either 1.8 V or 3.3 V GPIO. Also, it has internally
pulled down with a 100 kΩ resistor.
The following table shows the definition of FULL_CARD_POWER_OFF#.
Table 8: Definition of FCPO#
Pin
No.
Pin Name
I/O
Description
DC Characteristics
Comment
6
FULL_CARD_
POWER_OFF#
DI, PD
Turn on/off the module.
High level: Turn on
Low level: Turn off
V
IH
max = 4.4 V
V
IH
min = 1.19 V
V
IL
max = 0.2 V
Pull down with a
100 kΩ resistor.
NOTE