Telit Wireless Solutions GE863 Manual de usuario descargar pdf (Pagina 11)

GE863-GPS Software User Guide

1vv0300724 Rev. 2 - 24/01/07

2.4.1.3 Hardware Unconditional SHUTDOWN

To unconditionally SHUTDOWN the GE863-GPS the pin RESET# must be tied low for at least 200

milliseconds and then released.

A simple circuit to do it is:

RESET#

Unconditional Power OFF

impulse

GND

NOTE: don't use any pull up resistor on the RESET# line nor any totem pole digital output.

Using pull up resistor may bring to latch up problems on the GE863-GPS power regulator and

improper functioning of the module. The line RESET# must be connected only in open

collector configuration.

TIP: The unconditional hardware RESET should be always implemented on the boards and

software should use it as an emergency exit procedure.

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Telit Wireless Solutions GE863 Manual de usuario Pagina 11