LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 34 / 76
RESET_N
S2
Close to S2
TVS
Figure 11: Reference Circuit of RESET_N by Using Button
Please assure that there is no large capacitance on RESET_N pin.
3.8. PON_TRIG Interface
BG77 provides one PON_TRIG pin which is used to wake up the module from PSM. When the pin detects
a rising edge, the module will be woken up from PSM.
Table 9: Pin Definition of PON_TRIG Interface
A reference circuit is shown in the following figure.
Pin Name
Pin No.
I/O
Description
Comment
PON_TRIG
72
DI
Wake up the module from PSM
Rising-edge triggered.
Pulled-down by default.
1.8V power domain.
NOTES
