User's Manual

GE864
GE864GE864
GE864-
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-QUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.3 2010-04-08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 42 of 71
Automotive V2 input lines connected to open collector outputs in order to avoid latch-up
problems on the GE864-QUAD Automotive V2.
Care must be taken to avoid latch-up on the GE864-QUAD Automotive V2 and the use of
this output line to power electronic devices shall be avoided, especially for devices that
generate spikes and noise such as switching level translators, micro controllers,
failure in any of these condition can severely compromise the GE864-QUAD Automotive
V2 functionality.
NOTE:
NOTE: NOTE:
NOTE:
The input lines working at 2.8VCMOS can be pulled-up with 47KΩ resistors that can be
connected directly to the PWRMON line provided they are connected as in this example.
NO OTHER devices than those suggested should be powered with the PWRMON line;
otherwise the module functionality may be compromised.
It is important to consider that the added circuit must have consumption lower than
1mA.
In case of reprogramming of the module has to be considered the use of the RESET line
to start correctly the activity.
The preferable configuration is having an external supply for the buffer.