Perst# Signal - Quectel EC200T Series Hardware Design

Software method can be controlled by AT+CFUN, and the details are as follows.
Table 13: Airplane Mode Controlled by Software Method
AT+CFUN=?
0
1
4

3.10.4. PERST# Signal

The PERST# signal can be used to force a hardware reset on the card. The module can be reset by
driving the PERST# signal low for at least 300ms and then releasing it. The PERST# signal is sensitive to
interference. The traces should be as short as possible and be surrounded with ground. The reset
scenario is illustrated in the following figure.
VBAT
PERST#
Module
Status
NOTES
1. Please ensure that there is no large capacitance with the max value exceeding 10nF on PERST# pin.
2. PEREST# only resets the internal baseband chip of the module and does not reset the power
management chip.
EC200T_Series_Mini_PCIe_Hardware_Design
RF Function Status
RF and (U)SIM disabled
RF enabled
RF disabled
≥300ms
V ≤0.5V
IL
Running
Baseband resetting
Figure 11: Timing of Resetting Module
LTE Standard Module Series
EC200T Series Mini PCIe Hardware Design
Module Operation Mode
Minimum functionality mode
Normal mode
Airplane mode
Baseband restart
32 / 54