Q2406
| Model | Q2406 |
| Description | SELF CONTAINED E GSM/GPRS 900/1800 OR 850/1900 BI BAND MODULE |
| PDF file | Total 81 pages (File size: 909K) |
| Chip Manufacturer | ETC |
WM_PRJ_Q2400_PTS_002 - 002
24th January 2003
2.9.2 SIM socket connection
SIM socket pin description
Signal
VCC
RST
CLK
CC4
GND
VPP
I/O
CC8
Pin number
1
2
3
4
5
6
7
8
Description
SIMVCC
SIMRST
SIMCLK
VCC module
GROUND
Not connected
SIMDATA
SIMPRES with 100kΩ pull
down resistor
SIMVCC
SIMRST
SIMCLK
VCC
C
GND
SIMDATA
SIMPRES
100
kW
470pf
1 VCC
2 RST
3
CLK
4 CC4
5 GND
VPP
7
I/O
8 CC8
GND
Figure 2 : SIM socket
The capacitor placed on the Sim Vcc must not exceed 470nF.
2.9.3 SIM 3/5V management
The WISMO Quik Q24x6 Series module is designed to interface with 3V SIMs
only
.
Nevertheless, it is possible to manage 3V and 5V SIMs using an external level
shifter (see application notes in appendix). In this case, depending on the type
of SIM detected, the module firmware triggers the GPO0 output signal (pin
#26) in order to properly set the external SIM driver level (3V or 5V).
2
Most of the GSM operators have been providing 3V SIMs since 1998.
Page :
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