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
