5.11.6 SIM Card Interface
Pin |
| Name |
| Direction |
| Function |
|
|
|
|
|
|
|
15 |
| SIMVCC |
| Output |
| 1.8V or 3.0V SIM card supply |
16 |
| SIMDET |
| Input |
| SIM presence detection |
17 |
| SIMRST |
| Output |
| SIM card reset signal |
18 |
| SIMDAT |
| In/Out |
| SIM card data |
19 |
| SIMCLK |
| Output |
| SIM card clock signal |
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
SIMVCC
SIMDAT
SIMCLK SIMRST
Parameter |
|
| Mode |
| Min |
|
| Typ |
|
|
|
|
|
|
|
|
|
|
|
SIM supply voltage |
|
| 1.8V |
| 1.71 |
|
| 1.8 |
|
|
| 3.0V |
| 2.75 |
|
| 2.9 |
| |
|
|
|
|
| |||||
Short circuit current |
|
|
|
| 10 |
|
|
|
|
Quiescent Supply Current |
|
| 3.0V |
|
|
|
| 20 |
|
Output Capacitance |
|
|
|
| 0.3 |
|
|
|
|
Output Capacitor ESR |
|
|
| 0.01 |
|
|
|
| |
High level input voltage (VIH) |
|
| 1.8V |
|
|
|
|
|
|
|
| 3.0V |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
Low level input voltage (VIL) |
|
| 1.8V |
| 0.2xSIMVCC |
|
|
| |
|
| 3.0V | 0.4 |
|
|
|
| ||
|
|
|
|
|
|
| |||
High level output voltage (VOH) |
|
| 1.8V |
| 0.8xSIMVCC |
|
|
| |
|
| 3.0V |
| 0.8xSIMVCC |
|
|
| ||
|
|
|
|
|
|
| |||
Low level output voltage (VOL) |
|
| 1.8V |
|
|
|
|
|
|
|
| 3.0V |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
High level output voltage (VOH) |
|
| 1.8V |
| 0.9xSIMVCC |
|
|
| |
|
| 3.0V |
| 0.9xSIMVCC |
|
|
| ||
|
|
|
|
|
|
| |||
Low level output voltage (VOL) |
|
| 1.8V |
|
|
|
|
|
|
|
| 3.0V |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
| |
Max Unit
1.89V
3.05V
50 mA
∝A
2∝F
1.0Ω
0.7xSIMVCC V 0.7xSIMVCC V V V V V
0.4V
0.4V V V
0.4V
0.4V
LZT 123 1834 | 61 |