Turn Off Module; Turn Off Module By Pwrkey Pin - Quectel UC15 Hardware Design

The turn on scenarios is illustrated as the following figure.
NOTE
① Make sure that VBAT is stable before pulling down PWRKEY pin. The time between them is
recommended to be more than 0.03s.

3.7.2. Turn off Module

The following procedures can be used to turn off the module:

Normal power down procedure: Turn off the module by PWRKEY pin.

Normal power down procedure: Turn off the module by command AT+QPOWD.

Automatic shutdown: Turn off the module automatically if under-voltage or over-voltage is detected.

3.7.2.1. Turn off Module by PWRKEY Pin

Drive the PWRKEY to low level at least 0.6s, the module will execute power-down procedure after
PWRKEY is released. The power-down scenario is illustrated as the following figure.
UC15_Hardware_Design
Figure 10: Timing of Turning on Module
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