User's Manual

MeiG hardware design guide
7
Figure 4.6：Use the PWRKEY button circuit to boot
The following figure is the boot timing description：
Figure 4.7： Using PWRKEY boot timing diagram
4.2.2 Module Shutdown
Users can use the PWRKEY pin to shut down.
4.2.2.1 PWRKEY Shutdown
The user can turn off the PWRKEY signal by pulling it down for at least 3 seconds. The
shutdown circuit can refer to the design of the boot circuit. After the module detects the shutdown
action, a prompt window pops up on the screen to confirm whether to perform the shutdown action.
The user can achieve a forced shutdown by pulling PWRKEY down for a long time, pulling
down for at least 15 seconds
4.2.3 Module Reset
The SLM756P module supports a reset function that allows the user to quickly restart the
module by pulling the module's PM_RESIN_N1 (PIN57) pin low. The RESET signal is used as the
volume-key by default in Android. If you need to use the RESET signal, you need to modify the
software. The recommended circuit is as follows: