Product Info

LTE Module Series
BG96 Hardware Design
BG96_Hardware_Design 38 / 81
use an open drain/collector driver to control the PWRKEY.After STATUS pin
outputting a high level, PWRKEY pin can be released. A simple reference
circuit is illustrated in the following figure.
Turn on pulse
PWRKEY
4.7K
47K
≥500ms
10nF
Figure 6: Turn on the Module Using Driving Circuit
Another way to control the PWRKEY is using a button directly. When pressing the key, electrostatic strike
may generate from the finger. Therefore, aTVS component is indispensable to be placed nearby the
button for ESD protection. A reference circuit is shownin the following figure.
Figure 7: Turn on the Module Using Keystroke
The turn on scenario is illustrated in the following figure.