Wavecom WISMO Quik Q2406 - Page 6

WM_PRJ_Q2400_PTS_005 -007
18th January 2006
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2.7
Reset signal (~RST) ................................................................................ 34
2.8 External Interrupt (~INTR)....................................................................... 34
2.9 VCC output ............................................................................................. 35
2.10 VCC_RTC (Real Time Clock Supply) ......................................................... 35
2.10.1 General ........................................................................................... 35
2.10.2 Typical implementation................................................................... 36
3 Radio design ................................................................................. 38
3.1 Antenna characteristics .......................................................................... 38
3.2 Antenna implementation ........................................................................ 38
3.2.1 Recommendations .......................................................................... 38
3.2.2 RF connection ................................................................................. 39
4 Mechanical specifications............................................................. 41
5 PCB design.................................................................................... 42
5.1 General design rules ............................................................................... 42
5.2 Design rules for application manufacturing............................................. 42
5.3 Recommendation for lead free soldering........................................... 42
5.4 Power supply.......................................................................................... 42
5.5 Pads design ............................................................................................ 43
6 EMC recommendations ................................................................. 44
7 Firmware upgrade ......................................................................... 45
7.1 Recommendations .................................................................................. 45
7.2 Nominal upgrade procedure.................................................................... 45
7.3 Backup procedure................................................................................... 46
8 Embedded testability .................................................................... 47
9 Part references and suppliers........................................................ 50
9.1 General Purpose Connector .................................................................... 50
9.2 SIM Card Reader .................................................................................... 50
9.3 Microphone ............................................................................................ 50
9.4 Speaker .................................................................................................. 51
9.5 Antenna Cable ........................................................................................ 51
9.6 GSM antenna ......................................................................................... 51