Turn On The Module Automatically; Reboot/Turn Off The Module - Quectel SC66 Hardware Design

3.5.2. Turn on the Module Automatically

The module can be turned on automatically with CBL_PWR_N. A reference circuit is shown below:
Figure 9: Turn on the Module Automatically
NOTE
If the module is turned on automatically through CBL_PWR_N, then it cannot be turned off unless the
battery is removed.

3.5.3. Reboot/Turn off the Module

Pull down PWRKEY for at least 1s, and then choose to turn off or reboot the module when the prompt
window comes up.
Another way to reboot the module is to drive PWRKEY to a low level for at least 8s. The restart scenario is
illustrated in the following figure.
VBAT
PWRKEY
Others
Figure 10: Timing of Rebooting Module
SC66_Hardware_Design
CBL_PWR_N
1K
SC66
> 8s
Reboot
Smart LTE Module Series
SC66 Hardware Design
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