Telit Wireless Solutions GE863 Manuel D’Utilisation
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:
milliseconds and then released.
A simple circuit to do it is:
RESET#
Unconditional Power OFF
impulse
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.
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.
software should use it as an emergency exit procedure.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 11 of 109