LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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VDD_1V8 is provided by an external LDO.
The following is a brief description about the use of PON_TRIG.
PON_TRIG is pull down by default. Before the module is turned on, PON_TRIG must be pulled high.
Otherwise, the main UART interface will be inaccessible.
When the module is powered on, pull down PON_TRIG within 200 ms after you send
AT+QPOWED
or drive PWRKEY low, after which the module will excute a power-down procedure. For more details,
see
Chapter 3.9.
Pull down PON_TRIG and remain it low in e-l-DRX, PSM, sleep and power off modes. In other cases,
pull high PON_TRIG and remain it high to make sure the main UART is accessible. For details about
PON_TRIG usage in e-l-DRX and sleep modes, see
Chapter 3.4
and
Chapter 3.5
respectively.
After sending
AT+QPSMS
to enable PSM, driving PON_TRIG low will set the module into PSM.
Drive PON_TRIG high and remain it high, the module will wake up from PSM. In this case,
PON_TRIG must remain high, otherwise the module will re-enter PSM.
NOTE
