GE866-QUAD Hardware User Guide
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Mod. 0805 2011-07 Rev.2
Typical timings are reported in the plot above when testing the example circuit with Ctank=47mF. The
capacitor is rated with the following formula:
Where 80mA is a typical current during fast SYSHALT procedure, 300ms is the typical time to execute the
system halt and 0.5V is the minimum voltage margin from threshold of hardware reset.
NOTE:
Verify carefully the timings and failure voltages levels during system verifications.
WARNING:
Ctank associated with low ESR requires current limiting feature in DCDC
converter to avoid side effect of inrush current.
5.4.
Resetting the GE866-QUAD
5.4.1.
Hardware Unconditional restart
WARNING:
The hardware unconditional Restart must not be used during normal operation of the
device since it does not detach the device from the network. It shall be kept as an
emergency exit procedure to be done in the rare case that the device gets stuck
waiting for some network or SIM responses.
