Hardware Guide
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FIBOCOM MC610 Series Hardware Guide 31/71
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
3.3.1.2 Startup Sequence
Figure 3-6 Startup sequence control chart
Before lowering PWRKEY pins, VBAT voltage must be stable. It is suggested that the interval from
VBAT energization to PWRKEY pin lowering should not be less than 30 ms.
Note: