Download Wavecom GR64 Technical data

5.11.6 SIM Card Interface
Pin
Name
Direction
Function
15
SIMVCC
Output
16
SIMDET
Input
17
SIMRST
Output
SIM card reset signal
18
SIMDAT
In/Out
SIM card data
19
SIMCLK
Output
SIM card clock signal
1.8V or 3.0V SIM card supply
SIM presence detection
This interface allows the user to communicate with the smart (SIM) card in the user
application.
The GR64 offers alternative arrangements for accessing the SIM
depending on which variant of the GR64 is used. Both variants provide this interface
through the system connector, referred to as the external or remote SIM interface to
distinguish it from the integrated SIM interface.
The maximum distance between the SIM card holder and the wireless modem is
70cm. SIM holders placed further than this distance may not meet the SIM interface
performance specification.
This SIM interface allows the use of 3 V and 1.8 V SIM cards (5V is unsupported). The
wireless modem automatically detects the SIM type, switching the signal voltages
accordingly.
Signal
Parameter
SIM supply voltage
SIMVCC
Quiescent Supply Current
Max
Unit
1.8V
1.71
1.8
1.89
V
3.0V
2.75
2.9
3.05
V
50
mA
10
3.0V
20
µA
0.3
2
µF
Output Capacitor ESR
0.01
1.0
Ω
1.8V
0.7xSIMVCC
V
3.0V
0.7xSIMVCC
V
SIMDAT
High level output voltage (VOH)
Low level output voltage (VOL)
LZT 123 1834
Typ
Output Capacitance
Low level input voltage (VIL)
SIMRST
Min
Short circuit current
High level input voltage (VIH)
SIMCLK
Mode
High level output voltage (VOH)
Low level output voltage (VOL)
1.8V
0.2xSIMVCC
V
3.0V
0.4
V
1.8V
0.8xSIMVCC
V
3.0V
0.8xSIMVCC
V
1.8V
0.4
V
3.0V
0.4
V
1.8V
0.9xSIMVCC
V
3.0V 0.9xSIMVCC
V
1.8V
0.4
V
3.0V
0.4
V
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