Wavecom GR64 Application Note - page 7
2
Interfacing the SIM
This section describes how to interface the SIM and lists things to look out for when it
comes to component layout and routing. This is very important for type approval,
since the required testing is very stringent.
2.1 Insertion and removal
The SIM should preferably be inserted and removed when the module is powered off.
Removing an active SIM can permanently damage the SIM.
Removing the SIM while data is transferred can cause the loss of data
and in worst case permanently damage the SIM.
CAUTION
The SIMDET signal in the system connector can be used to indicate
whether the SIM is going to be removed if it is linked to a mechanical
lid covering the SIM-holder. The SIM can then safely be shut down
before it is possible for the user to remove it from the holder.
TIP
The best solution for the SIM is if it is mounted in a location which
requires the Wireless CPU to be powered off before accessing the SIM
is possible. One option for this is behind the battery requiring the
user to remove the battery before access to the SIM is provided.
TIP
GR/GS64 Application Note
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
SIM Interface
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