Telit Wireless Solutions GM862-GPS Uživatelský manuál stáhnout pdf (Strana 8)

GM862-GPS Hardware User Guide

1vv0300728 Rev. 0 - 27/04/06

2.2.2 Hardware Unconditional Reboot

To unconditionally Reboot the GM862-GPS the pin RESET# must be tied low for at least 200

milliseconds and then released.

The maximum current that can be drained from the ON# pin is 0,15 mA.

A simple circuit to do it is:

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 GM862-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.

RESET#

Unconditional Power OFF

impulse

GND

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 54 55

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Telit Wireless Solutions GM862-GPS Uživatelský manuál Strana 8