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FIBOCOM MC610 Series Hardware Guide
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3.3.1 Module Startup
3.3.1.1 Startup Circuit Reference
When MC610 series modules are shut down, the module can be started up by lowering PWRKEY for at
least 2 s. It is recommended to use OC/OD drive circuit to control PWRKEY pins. The reference circuit is
shown in the following figure:
Figure 3-4 OC/OD drive reference startup circuit
Another way to control PWRKEY pins is to directly use a button switch. A TVS (recommended
ESD9X5VL-2/TR) should be placed near the button for ESD protection. The reference circuit is shown in
the following figure:
Figure 3-5 Key startup reference circuit
4.7K
47K
10nF
PWRKEY
Turn on pulse
≥
2s
