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Telit Wireless Solutions GM862-GPS Bedienungsanleitung Seite 8

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GM862-GPS Hardware User Guide
1vv0300728 Rev. 0 - 27/04/06
Reproduction forbidden without Telit Communications S.p.A. writte n authorization - All Right reserved page 8 of 55
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
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