Quectel BG95 A-GL Series Hardware Design page 43

Figure 14: Power-up Timing (After VBAT is Stable for more than 250 ms)
NOTE
1. After VBAT is powered on, it will take about 250 ms for the module to load the internal program.
2. Before the module is turned on by driving PWRKEY low for 500–1000 ms, drive PON_TRIG high,
otherwise, the main UART interface will be inaccessible.
After the module is turned off with the PWRKEY and PON_TRIG solution (see Chapter 3.9.1) or the AT
command and PON_TRIG solution (see Chapter 3.9.2), VBAT will keep powered on all the time until the
main power supply is disconnected. In this case, driving PON_TRIG high and then driving PWRKEY low
will restart the module, and the restart timing is shown below.
BG95xA-GL_Hardware_Design
LPWA Module Series
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