MeiG
Product
Manual
of
SLM750
Module
SLM750
Module
Hardware
Design
Page 37, total 84 pages
Figure 9 Timing of turning on module
Note:
1. Tnote > 30ms.
2. If the external pull up design of PWRKEY pin is added, it is recommended that the pull-up
level range is 1.3V~2.1V
3.7.2 Turn off module using the PWRKEY pin
Modules can be shut down in the following ways:
normal shutdown: shutdown through PWRKEY pin control module;
normal shutdown: shutdown through AT command
3.7.2.1 PWRKEY pin shutdown
When the module is on, the PWRKEY pin is pulled down and released after holding at least 2s,