Altec GSM SOCKET AL7020S - Manual (Page 17)

AL7020S, AL7024S Designer’s Guide
Doc. No. DG_7024E Altec Electronic AG Seite 17 / 32
3.5 Internal SIM Card Interface
The AL7020S module has a built-in SIM card reader within the module itself (see
figure 3.5). The SIM card is inserted into the slot provided on the side of the
connectors (bottom side).
The SIM Interface controls a 3V SIM card. This interface is fully compliant with GSM
11.11 recommendation concerning SIM functions.
3.5.1 SIM Card reader pins supported:
Signal Pin No I/O Description
SIMVCC 1 O SIM Power Supply
SIMRST 2 O SIM Reset
SIMCLK 3 O SIM Clock
SIMGND 5 O SIM GND
SIMDATA 7 I/O SIM Data
SIMPRES 8 I
SIM Card Detect not
supported
Figure 3-5. SIM C ARD R EADER
SIM Card
Reader
Bottom
View