Sim Interface; Sim Card Application - SimCom SIM548C HD V1.01 Hardware Design

SIM548C Hardware Design
Normal Single
Output(SPK1) Ended
Differential
Auxiliary Single
Output(SPK2) Ended
Differential

3.11 SIM interface

3.11.1 SIM card application

You can use AT Command to get information in SIM card. For more information, please refer to
document [1].
The SIM interface supports the functionality of the GSM Phase 1 specification and also supports
the functionality of the new GSM Phase 2+ specification for FAST 64 kbps SIM (intended for use
with a SIM application Tool-kit).
Both 1.8V and 3.0V SIM Cards are supported.
The SIM interface is powered from an internal regulator in the module having normal voltage 3V.
All pins reset as outputs driving low. Logic levels are as described in table18
Beside the SIM interface pin, there are also a SIM card holder in the module. The customer can
use either the SIM card holder in the module or the SIM interface pin.
SIM548C_HD_V1.01
load 27
Resistance
Ref level
load 27
Resistance
Ref level
load 27
Resistance
Ref level
load 27
Resistance
Ref level
53
32
0.5477
-12.04
32
1.0954
-6.02
32
0.5477
-12.04
32
1.0954
-6.02
Ohm
Vpp
dBm
Ohm
Vpp
dBm
Ohm
Vpp
dBm
Ohm
Vpp
dBm
09.05.2008