Hardware Guide

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FIBOCOM MC116-NA Series Hardware Guide Page 26 of 63
Figure 5-2 Button switch power on reference circuit
Figure 5-3 shows power on timing.
Figure 5-3 Power on timing
Before pulling down PWRKEY pin, the voltage of VBAT must be stable, recommended time
interval between VBAT enable and pull down PWRKEY pin at least 30ms.
Note: