User's Manual

GE864-AUTO Hardware User Guide
1vv0300779 Rev.0 - 20/06/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 4 of 62
9.2 OUTPUT LINES (Speaker)....................................................................................................40
9.2.1 Short description............................................................................................................................ 40
9.2.2 Output Lines Characteristics.......................................................................................................... 41
10 General Purpose I/O.......................................................................................................42
10.1 GPIO Logic levels .............................................................................................................44
10.2 Using a GPIO Pad as INPUT.............................................................................................45
10.3 Using a GPIO Pad as OUTPUT.........................................................................................45
10.4 Using the RF Transmission Control GPIO4....................................................................45
10.5 Using the RFTXMON Output GPIO5 ................................................................................46
10.6 Using the Alarm Output GPIO6........................................................................................47
10.7 Using the Buzzer Output GPIO7 ......................................................................................47
10.8 Indication of network service availability .......................................................................48
10.9 RTC Bypass out ................................................................................................................49
10.10 External 32KHz oscillator.................................................................................................49
11 ADC section....................................................................................................................51
11.1 ADC Converter ..................................................................................................................51
11.1.1 Description..................................................................................................................................... 51
11.1.2 Using ADC Converter .................................................................................................................... 51
11.2 Mounting the GE864-AUTO on your Board ....................................................................52
11.2.1 General .......................................................................................................................................... 52
11.2.2 Module finishing & dimensions ...................................................................................................... 52
11.2.3 Recommended foot print for the application (GE864) ................................................................... 53
11.2.4 Debug of the GE864 in production ................................................................................................ 54
11.2.5 Stencil ............................................................................................................................................ 54
11.2.6 PCB pad design............................................................................................................................. 55
11.2.7 Solder paste................................................................................................................................... 56
11.2.8 GE864 Solder reflow...................................................................................................................... 57
11.3 Packing system.................................................................................................................58
11.3.1 GE864 orientation on the tray........................................................................................................ 59
11.3.2 Moisture sensibility ........................................................................................................................ 59
12 Conformity Assessment Issues....................................................................................60
13 SAFETY RECOMMANDATIONS.....................................................................................61
14 Document Change Log ..................................................................................................62