Telit Wireless Solutions GE864-QUAD/PY, User Manual

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GE865 Hardware User Guide
1vv0300799 Rev.9 – 27-07-2009
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 5 of 70
10.1.2 Output Lines .........................................................................................................................................................46
11 GENERAL PURPOSE I/O.................................................................................................................................... 47
11.1 GPIO L
OGIC LEVELS
..........................................................................................................................................................48
11.2 U
SING A
GPIO P
AD AS
INPUT ...........................................................................................................................................49
11.3 U
SING A
GPIO P
AD AS
OUTPUT........................................................................................................................................49
11.4 U
SING THE
RF T
RANSMISSION
C
ONTROL
GPIO4....................................................................................................................49
11.5 U
SING THE
RFTXMON O
UTPUT
GPIO5..............................................................................................................................49
11.6 U
SING THE
A
LARM
O
UTPUT
GPIO6.....................................................................................................................................50
11.7 U
SING THE
B
UZZER
O
UTPUT
GPIO7 ....................................................................................................................................50
11.8 M
AGNETIC
B
UZZER
C
ONCEPTS
............................................................................................................................................51
11.8.1 Short Description..................................................................................................................................................51
11.8.2 Frequency Behaviour............................................................................................................................................52
11.8.3 Power Supply Influence ........................................................................................................................................52
11.8.4 Working Current Influence ...................................................................................................................................52
11.9 I
NDICATION OF NETWORK SERVICE AVAILABILITY
.....................................................................................................................53
11.10 RTC B
YPASS OUT
...........................................................................................................................................................54
11.11 E
XTERNAL
SIM H
OLDER
I
MPLEMENTATION
.........................................................................................................................54
12 DAC AND ADC SECTION ................................................................................................................................... 55
12.1 DAC C
ONVERTER
.............................................................................................................................................................55
12.1.1 Description ...........................................................................................................................................................55
12.1.2 Enabling DAC........................................................................................................................................................56
12.1.3 Low Pass Filter Example .......................................................................................................................................56
12.2 ADC C
ONVERTER
.............................................................................................................................................................57
12.2.1 Description ...........................................................................................................................................................57
12.2.2 Using ADC Converter............................................................................................................................................57
13 MOUNTING THE GE865 ON YOUR BOARD ........................................................................................................ 58
13.1 G
ENERAL
........................................................................................................................................................................58
13.2 M
ODULE FINISHING
&
DIMENSIONS
.....................................................................................................................................58
13.3 R
ECOMMENDED FOOT PRINT FOR THE APPLICATION
.................................................................................................................59
13.4 D
EBUG OF THE
GE865
IN PRODUCTION
................................................................................................................................60
13.5 S
TENCIL
..........................................................................................................................................................................60
13.6 PCB
PAD DESIGN
..............................................................................................................................................................61
13.7 S
OLDER PASTE
..................................................................................................................................................................62
13.7.1 GE865 Solder reflow.............................................................................................................................................63
14 PACKING SYSTEM ............................................................................................................................................ 65
14.1 M
OISTURE SENSIBILITY
......................................................................................................................................................66
15 CONFORMITY ASSESSMENT ISSUES.................................................................................................................. 67
16 SAFETY RECOMMANDATIONS.......................................................................................................................... 69