LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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Figure 8: Turn on the Module a Button
The power-up scenario is illustrated in the following figure.
Figure 9: Power-up Timing
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3. Ensure that VBAT is stable for at least 100 ms before pulling down the PWRKEY.
4. Pull PON_TRIG high before the module is turned on, and then drive PWRKEY low for 500ā1000 ms
and release, otherwise, the main UART interface will be inaccessible.