Specifications

WM_PRJ_Q2501_PTS_002 - 001
March 2004
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Table of figures
Figure 1: Functional architecture .................................................................... 16
Figure 2: Typical Power supply voltage in GSM/GPRS mode .......................... 18
Figure 3: RTC supplied by a super capacitor................................................... 20
Figure 4: RTC supplied by a non rechargeable battery.................................... 21
Figure 5: RTC supplied by a rechargeable battery cell .................................... 21
Figure 6: Example of ON/~OFF pin connection ............................................... 22
Figure 7: Example of BOOT pin connection .................................................... 22
Figure 8: Example of ~RST pin connection ..................................................... 23
Figure 9: Example N°1 of GSM and GPS activity status implementation......... 24
Figure 10: Example N°2 of GSM activity status implementation ..................... 24
Figure 11: Example of RS232 level shifter implementation for GSM UART1 ... 25
Figure 12: Example of V24/CMOS serial link implementation for UART1 ........ 26
Figure 13: Example of RS232 level shifter implementation for GSM UART2 ... 27
Figure 14: Example of SPI bus application...................................................... 29
Figure 15: example of 2 wire bus application ................................................. 30
Figure 16: Example of 3V SIM Socket implementation.................................... 31
Figure 17: Example of 1.8 V / 3 V SIM interface implementation .................... 33
Figure 18: Example of 3 V / 5 V SIM interface implementation ....................... 34
Figure 19: Example of keyboard implementation ............................................ 36
Figure 20: Example of main microphone (MIC2) implementation.................... 38
Figure 21: MIC1 input differential connection................................................. 39
Figure 22: MIC1 input single ended connection ............................................. 40
Figure 23: Speaker differential connection ...................................................... 41
Figure 24: Speaker single-ended connection .................................................. 42