M12 Hardware Design
M12_Hardware_Design_V3.3 - 28 -
Turn on pulse
PWRKEY
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Figure 6: Turn on the module using driving circuit
The other way to control the PWRKEY is using a button directly. A TVS component is
indispensable to be placed nearby the button for ESD protection. When pressing the key,
electrostatic strike may generate from finger. A reference circuit is showed in Figure 7.
Figure 7: Turn on the module using keystroke
The power on scenarios is illustrated as the following figure.
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