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MeiG Smart product technical information
SLM500 Hardware Design Guide Page 33
4.2.2. Module Shutdown
Users can use the PWRKEY pin to shutdown.
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 SLM500 module supports a reset function that allows the user to quickly restart the
module by pulling the RESET_N pin（225） of the module low. The recommended circuit is as
follows:
Figure 4.8：Reset using the key circuit
Figure 4.9： Reset Module Using External Signal