SIMCom SIM908 Hardware Design 1.00

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SIM908_Hardware Design_V1.00



Smart Machine Smart Decision

Document Title SIM908 Hardware Design

Version 1.00

Date 2011-06-28

Status Release

Document Control ID SIM908_Hardware Design_V1.00

General Notes

SIMCom offers !is informaion as a ser"i#e o is #$somers% o s$&&or a&&li#aion and engineering effors !a

$se !e &rod$#s designed '( SIMCom. )!e informaion &ro"ided is 'ased $&on re*$iremens s&e#ifi#all(

&ro"ided o SIMCom '( !e #$somers. SIMCom !as no $ndera+en an( inde&enden sear#! for addiional

rele"an informaion% in#l$ding an( informaion !a ma( 'e in !e #$somer,s &ossession. $r!ermore% s(sem

"alidaion of !is &rod$# designed '( SIMCom wi!in a larger ele#roni# s(sem remains !e res&onsi'ili( of

!e #$somer or !e #$somer,s s(sem inegraor. ll s&e#ifi#aions s$&&lied !erein are s$'/e# o #!ange.

Copyright

)!is do#$men #onains &ro&riear( e#!ni#al informaion w!i#! is !e &ro&er( of SIMCom imied% #o&(ing of

!is do#$men and gi"ing i o o!ers and !e $sing or #omm$ni#aion of !e #onens !ereof% are for'idden

wi!o$ e&ress a$!ori(. ffenders are lia'le o !e &a(men of damages. ll rig!s reser"ed in !e e"en of

gran of a &aen or !e regisraion of a $ili( model or design. ll s&e#ifi#aion s$&&lied !erein are s$'/e# o

#!ange wi!o$ noi#e a an( ime.

Copyright © Shanghai SIMCom Wireless Solutions Ltd. 2011

SIM908_Har!are Design_V"#00 2 $0""%0&%$8




Contents

Contents#################################################################################################################################################################### '

Version History###################################################################################################################################################### 9

" Introuction###################################################################################################################################################### "0

$ SIM908 ()er)ie!############################################################################################################################################### "0

2.1 SIM908 3e( ea$res................................................................................................................................. 10

2.2 &eraing Modes............................................................................................................................................ 14

2.4 SIM908 $n#ional Diagram....................................................................................................................... 15

' *ac+age In,ormation######################################################################################################################################## "-

4.1 in o$ Diagram............................................................................................................................................ 17

4.2 in Des#ri&ion............................................................................................................................................ 16

4.4 a#+age Dimensions..................................................................................................................................... 18

4.5 Me#!ani#al dimensions of !e R #onne#or............................................................................................... 19

. GSM /pplication Inter,ace############################################################################################################################## $0

5.1 ower S$&&l(............................................................................................................................................... 20

5.1.1 Minimiing Volage Dro& of V)...................................................................................................... 21

5.1.2 Monioring ower S$&&l(....................................................................................................................... 21

5.2 ower on:down S#enarios.............................................................................................................................. 22

5.2.1 ower on SIM908................................................................................................................................. 22

5.2.2 ower down SIM908.............................................................................................................................. 24

5.2.4 Resar SIM908 '( ;R3<= in......................................................................................................... 27

5.4 ower Sa"ing Mode..................................................................................................................................... 26

5.4.1 Minim$m $n#ionali( Mode................................................................................................................ 26

5.4.2 Slee& Mode 1 >)?CSC3@1A............................................................................................................. 26

5.4.4 ;a+e B& SIM908 from Slee& Mode 1 >)?CSC3@1A....................................................................... 2

5.4.5 Slee& Mode 2 >)?CSC3@2A............................................................................................................. 2

5.4.7 ;a+e B& SIM908 from Slee& Mode 2 >)?CSC3@2A....................................................................... 2

5.5 C!arging inerfa#e ..................................................................................................................................... 2

5.5.1 aer( &a#+ #!ara#erisi#s .................................................................................................................... 28

5.5.2 Re#ommended 'aer( &a#+.................................................................................................................... 28

5.5.4 Im&lemened #!arging e#!ni*$e......................................................................................................... 29

5.5.5 &eraing modes d$ring #!arging......................................................................................................... 29

5.5.7 C!arger re*$iremens.............................................................................................................................. 40

5.7 R)C a#+$&................................................................................................................................................... 41

5.6 Serial Inerfa#es............................................................................................................................................ 42

5.6.1 $n#ion of Serial or and De'$g or.................................................................................................. 44

5.6.2 Sofware B&grade and De'$g................................................................................................................ 45

5. $dio Inerfa#es............................................................................................................................................ 45

5..1 S&ea+er Inerfa#e Config$raion............................................................................................................. 47

5..2 Mi#ro&!one Inerfa#es Config$raion.................................................................................................. 475..4 <ar&!one Inerfa#e Config$raion......................................................................................................... 46

5..5 $dio <le#roni# C!ara#erisi#s............................................................................................................. 46





5.8 SIM Card Inerfa#e........................................................................................................................................ 4

5.8.1 SIM Card &&li#aion.............................................................................................................................. 4

5.8.2 Design Consideraions for SIM Card Holder........................................................................................ 48

5.9 CD Dis&la(:SI Inerfa#e.......................................................................................................................... 49

5.10 3e(&ad Inerfa#e........................................................................................................................................ 50

5.11 DC............................................................................................................................................................. 50

5.12 RI e!a"iors............................................................................................................................................... 515.14 ewor+ Sa$s Indi#aion.......................................................................................................................... 52

5.15 Eeneral $r&ose In&$:$&$ >EIA...................................................................................................... 54

5.17 ;M.......................................................................................................................................................... 54

5.16 I2C $s...................................................................................................................................................... 54

5.1 ESM nenna Inerfa#e.............................................................................................................................. 54

- G*S /pplication Inter,ace############################################################################################################################## ..

7.1 ES o&eraing modes..................................................................................................................................... 57

7.2 ower on:down S#enarios.............................................................................................................................. 57

7.2.1 ower on ES engine.............................................................................................................................. 577.2.2 ower down ES engine....................................................................................................................... 57

7.4 ES-V)-B) and ES-V)-I......................................................................................................... 57

7.5 nenna Inerfa#e........................................................................................................................................ 57

7.5.1 nenna Inerfa#e..................................................................................................................................... 57

7.5.2 ES nenna C!oi#e Consideraion...................................................................................................... 56

& lectrical1 2elia3ility an 2aio Characteristics########################################################################################### .4

6.1 'sol$e Maim$m Raings.......................................................................................................................... 5

6.2 Re#ommended &eraing Condiions......................................................................................................... 5

6.4 Digial Inerfa#e C!ara#erisi#s................................................................................................................... 586.5 SIM Card Inerfa#e C!ara#erisi#s............................................................................................................. 58

6.7 VDD_<F) C!ara#erisi#s.......................................................................................................................... 58

6.6 SIM_VDD C!ara#erisi#s.......................................................................................................................... 59

6. VR)C C!ara#erisi#s..................................................................................................................................... 59

6.8 C$rren Cons$m&ion >V) @ 4.8V% ES engine is &owered downA......................................................... 59

6.9 <le#ro-Sai# Dis#!arge.............................................................................................................................. 70

6.10 Radio C!ara#erisi#s................................................................................................................................. 71

6.10.1 Mod$le R $&$ ower.................................................................................................................... 71

6.10.2 Mod$le R Re#ei"e Sensii"i(............................................................................................................. 72

6.10.4 Mod$le &eraing re*$en#ies............................................................................................................. 72

4 Manu,acturing################################################################################################################################################### -'

.1 )o& View of SIM908..................................................................................................................................... 74

.2 )(&i#al Solder Reflow rofile....................................................................................................................... 75

.4 Mois$re Sensii"i( e"el >MSA................................................................................................................ 75

/ppeni5############################################################################################################################################################# --

. Relaed Do#$mens........................................................................................................................................ 77

. )erms and ''re"iaions.............................................................................................................................. 76

C. Safe( Ca$ion............................................................................................................................................... 7





Ta3le Ine5

Ta3le "6 SIM908 GSM7G*2S engine +ey ,eatures########################################################################################### "0

Ta3le $6 G*S engine *er,ormance####################################################################################################################### "$

Ta3le '6 Coing schemes an ma5imum net ata rates o)er air inter,ace##################################################### "$

Ta3le .6 ()er)ie! o, operating moes################################################################################################################ "'

Ta3le -6 *in escription######################################################################################################################################## "&

Ta3le &6 The Current consumption o, Minimum unctionality Moe############################################################ $&

Ta3le 46 Speci,ication o, recommene 3attery pac+######################################################################################## $8

Ta3le 86 Charge operating moes####################################################################################################################### '0

Ta3le 96 /T Comman usually use in Charge%only moe############################################################################## '0

Ta3le "06 Microphone Input Characteristics###################################################################################################### '&

Ta3le ""6 /uio (utput Characteristics############################################################################################################# '&

Ta3le "$6 *in escription /mphenol SIM car holer:################################################################################# '8

Ta3le "'6 *in escription Mole5 SIM car holer:######################################################################################## '9

Ta3le ".6 *in e,inition o, the +eypa inter,ace############################################################################################### .0

Ta3le "-6 /DC speci,ication################################################################################################################################# ."

Ta3le "&6 2I ;eha)iors######################################################################################################################################## ."

Ta3le "46 Status o, the NT<IGHT pin############################################################################################################# .$

Ta3le "86 *in e,inition o, the G*I( inter,ace################################################################################################## .'

Ta3le "96 *in e,inition o, the G*I( inter,ace################################################################################################## ..

Ta3le $06 /3solute ma5imum ratings################################################################################################################ .4

Ta3le $"6 2ecommene operating conitions################################################################################################## .4

Ta3le $$6 Digital inter,ace characteristics######################################################################################################### .8

Ta3le $'6 SIM car inter,ace characteristics###################################################################################################### .8

Ta3le $.6 VDD_=T characteristics#################################################################################################################### .8

Ta3le $-6 SIM_VDD characteristics#################################################################################################################### .9

Ta3le $&6 V2TC characteristics########################################################################################################################### .9

Ta3le $46 GSM Current consumption################################################################################################################ .9

Ta3le $86 The SD characteristics Temperature6 $- 1 Humiity6 .- >:℃ ################################################## -0





Ta3le $96 SIM908 GSM 900 an GSM 8-0 conucte 2 output po!er##################################################### -"

Ta3le '06 SIM908 DCS "800 an *CS "900 conucte 2 output po!er##################################################### -"

Ta3le '"6 SIM908 conucte 2 recei)e sensiti)ity######################################################################################## -$

Ta3le '$6 SIM908 operating ,re?uencies############################################################################################################# -'

Ta3le ''6 2elate ocuments############################################################################################################################## --

Ta3le '.6 Terms an /33re)iations#################################################################################################################### -&

Ta3le '-6 Sa,ety caution######################################################################################################################################## -4





igure Ine5

igure "6 SIM908 ,unctional iagram################################################################################################################ ".

igure $6 SIM908 pin out iagram Top )ie!:################################################################################################## "-

igure '6 Dimensions o, SIM908 （ @nit6 mm） #################################################################################### "8

igure .6 2ecommene *C; ,ootprint outline （ @nit6 mm） ############################################################ "9

igure -6 @#<%2%SMT @nit6mm:#################################################################################################################### $0

igure &6 @#< series 2 aapter ca3le @nit6mm:########################################################################################### $0

igure 46 2e,erence circuit o, the <D( po!er supply#################################################################################### $0

igure 86 2e,erence circuit o, the DC%DC po!er supply################################################################################# $"

igure 96 V;/T )oltage rop uring transmit 3urst######################################################################################## $"

igure "06 The minimal V;/T )oltage re?uirement at V;/T rop################################################################ $"

igure ""6 *o!ere on7o!n moule using transistor#################################################################################### $$

igure "$6 *o!ere on7o!n moule using 3utton########################################################################################### $$

igure "'6 Timing o, po!er on moule############################################################################################################# $'

igure ".6 Timing o, po!er o!n SIM908 3y *A2B################################################################################# $.

igure "-6 Timing o, restart SIM908################################################################################################################ $&

igure "&6 SIM908 !ith 3attery charger an pac+ connection####################################################################### $8

igure "46 2TC supply ,rom capacitor############################################################################################################# '"

igure "86 2TC supply ,rom non%chargea3le 3attery#################################################################################### '"

igure "96 2TC supply ,rom rechargea3le 3attery########################################################################################### '"

igure $06 Sei+o =H.".H%IV0" Charge%Discharge Characteristic############################################################ '$

igure $"6 Connection o, the serial inter,aces################################################################################################## '$

igure $$6 Connection o, 2=D an T=D only################################################################################################## ''

igure $'6 Connection ,or so,t!are upgraing an e3ugging####################################################################### '.

igure $.6 Spea+er re,erence circuit#################################################################################################################### '-

igure $-6 Spea+er !ith ampli,ier re,erence circuit######################################################################################## '-

igure $& 6 Microphone re,erence circuit######################################################################################################### '-

igure $46 arphone re,erence circuit################################################################################################################ '&

igure $86 2e,erence circuit o, the 8%pin SIM car holer############################################################################## '4

igure $96 2e,erence circuit o, the &%pin SIM car holer############################################################################## '8

igure '06 /mphenol C404 "0M00& -"$$ SIM car holer############################################################################## '8

igure '"6 Mole5 9"$$8 SIM car holer######################################################################################################### '9

igure '$6 2e,erence circuit o, the +eypa inter,ace######################################################################################## .0

igure ''6 2I 3eha)iour o, )oice calling as a recei)er#################################################################################### ."

SIM908_Har!are Design_V"#00 $0""%0&%$8




igure '.6 2I 3eha)iour o, ata calling as a recei)er######################################################################################## ."

igure '-6 2I 3eha)iour o, @2C or recei)e SMS############################################################################################### .$

igure '&6 2I 3eha)iour as a caller#################################################################################################################### .$

igure '46 2e,erence circuit o, NT<IGHT###################################################################################################### .$

igure '86 /ntenna matching circuit################################################################################################################ ..

igure '96 /ntenna matching circuit################################################################################################################ .&

igure .06 Top )ie! o, SIM908########################################################################################################################### -'

igure ."6 Typical Soler 2e,lo! *ro,ile######################################################################################################### -.





Version History

Date Version Description o, change /uthor

2011-06-28 1.00 rigin iEang

SIM908_Har!are Design_V"#00 $0""#0&#$8




" Introuction

)!is do#$men des#ri'es SIM908 !ardware inerfa#e in grea deail.

)!is do#$men #an !el& $ser o *$i#+l( $ndersand SIM908 inerfa#e s&e#ifi#aions% ele#ri#al and me#!ani#al

deails. ;i! !e !el& of !is do#$men and o!er SIM908 a&&li#aion noes% $ser g$ide% $sers #an $se SIM908 o

design "ario$s a&&li#aions *$i#+l(.

$ SIM908 ()er)ie!

Designed for glo'al mar+e% SIM908 is inegraed wi! a !ig! &erforman#e ESM:ERS engine and a ES

engine. )!e ESM:ERS engine is a *$ad-'and ESM:ERS mod$le !a wor+s on fre*$en#ies ESM 870MH%

<ESM 900MH% DCS 1800MH and CS 1900MH. SIM908 fea$res ERS m$li-slo #lass 10: #lass 8

>o&ionalA and s$&&ors !e ERS #oding s#!emes CS-1% CS-2% CS-4 and CS-5. )!e ES sol$ion offers 'es- in-

#lass a#*$isiion and ra#ing sensii"i(% )ime-)o-irs-i >))A and a##$ra#(.

;i! a in( #onfig$raion of 40G40G4.2mm% SIM908 #an mee almos all !e s&a#e re*$iremens in $ser

a&&li#aions% s$#! as M2M% smar &!one% D% ra#+er and o!er mo'ile de"i#es.

SIM908 !as 80 SM) &ads% and &ro"ides all !ardware inerfa#es 'eween !e mod$le and #$somers, 'oards.

Serial &or and de'$g &or #an !el& $ser easil( de"elo& $ser,s a&&li#aions.

ES Serial &or.

)wo a$dio #!annels in#l$de wo a$dio in&$s and wo a$dio o$&$s. )!ese #an 'e easil( #onfig$red '( )

#ommand.

C!arging inerfa#e.

rogramma'le general &$r&ose in&$ and o$&$.

)!e +e(&ad and SI dis&la( inerfa#es will gi"e $sers !e flei'ili( o de"elo& #$somied a&&li#aions.

R &ad and #onne#or inerfa#e.

SIM908 is designed wi! &ower sa"ing e#!ni*$e so !a !e #$rren #ons$m&ion is as low as 1.0m in slee&

mode >ES engine is &owered downA.

SIM908 inegraes )C:I &roo#ol and eended )C:I ) #ommands w!i#! are "er( $sef$l for daa ransfer

a&&li#aions. or deails a'o$ )C:I a&&li#aions% &lease refer o document [2].

2.1 SIM908 Bey eatures

Ta3le " 6 SIM908 GSM7G*2S engine +ey ,eatures

eature Implementation

ower s$&&l( 4.2V 5.8V

ower sa"ing )(&i#al &ower #ons$m&ion in slee& mode is 1.0m > S--MRMS@9% ES

engine is &owered down A

C!arging S$&&ors #!arging #onrol for i-Ion 'aer(

re*$en#( 'ands SIM908 $ad-'andJ ESM 870% <ESM 900% DCS 1800% CS 1900. SIM908

#an sear#! !e 5 fre*$en#( 'ands a$omai#all(. )!e fre*$en#( 'ands also #an





'e se '( ) #ommand K)?CDL. or deails% &lease refer o document

[1].

Com&lian o ESM !ase 2:2?

)ransmiing &ower Class 5 >2;A a ESM 870 and <ESM 900

Class 1 >1;A a DCS 1800 and CS 1900

ERS #onne#i"i( ERS m$li-slo #lass 10（ defa$l ）

ERS m$li-slo #lass 8 >o&ionA

)em&era$re range ormal o&eraionJ -40C ?80C

Resri#ed o&eraionJ -50C -40C and ?80 C ?87CG

Sorage em&era$re -57C ?90C

Daa ERS ERS daa downlin+ ransferJ ma. 87.6 +'&s

ERS daa $&lin+ ransferJ ma. 52.8 +'&s

Coding s#!emeJ CS-1% CS-2% CS-4 and CS-5

Inegrae !e )C:I &roo#ol.

S$&&or a#+e road#as Conrol C!annel >CCHA

CSD S$&&or CSD ransmission

BSSD Bnsr$#$red S$&&lemenar( Ser"i#es Daa >BSSDA s$&&or

SMS M)% M% C% )e and DB mode

SMS sorageJ SIM #ard

F Ero$& 4 Class 1

SIM inerfa#e S$&&or SIM #ardJ 1.8V% 4V

<ernal anenna nenna &ad

$dio fea$res S&ee#! #ode# modesJ

Half Rae ><)S 06.20A

$ll Rae ><)S 06.10A

<n!an#ed $ll Rae ><)S 06.70 : 06.60 : 06.80A

da&i"e m$li rae >MRA

<#!o Can#ellaion

oise S$&&ression

Serial &or and

de'$g &or

Serial port6

$ll modem inerfa#e wi! sa$s and #onrol lines% $n'alan#ed% as(n#!rono$s.

1200'&s o 117200'&s.

Can 'e $sed for ) #ommands or daa sream.

S$&&or R)S:C)S !ardware !ands!a+e and sofware : flow #onrol.

M$li&le a'ili( a##ording o ESM 0.10 M$li&leer roo#ol.

$o'a$ding s$&&ors 'a$d rae from 1200 '&s o 7600'&s.

De3ug port6

$ll modem inerfa#e ES:DE_)FD and ES:DE_RFD.

Can 'e $sed for de'$gging and $&grading firmware.

!one'oo+ managemen S$&&or &!one'oo+ (&esJ SM% D% D% RC% % MC.

SIM a&&li#aion ool+i ESM 11.15 Release 99

Real ime #lo#+ S$&&or R)C

!(si#al #!ara#erisi#s SieJ 40G40G4.2mm

;eig!J 7.2g

irmware $&grade irmware $&gradea'le '( de'$g &or.







$#$ (perating Moes

)!e a'le 'elow s$mmaries !e "ario$s o&eraing modes of SIM908.

Ta3le . 6 ()er)ie! o, operating moes

Moe unction

ormal

o&eraion

ESM:ERS

S<<

Mod$le will a$omai#all( go ino slee& mode if !e #ondiions of slee&

mode are ena'ling and !ere is no on air and no !ardware inerr$& >s$#! as

EI inerr$& or daa on serial &orA.

In !is #ase% !e #$rren #ons$m&ion of mod$le will red$#e o !e minimal

le"el.

In slee& mode% !e mod$le #an sill re#ei"e &aging message and SMS.

ESM

ID<

Sofware is a#i"e. Mod$le regisered o !e ESM newor+% and !e mod$le

is read( o #omm$ni#ae.

ESM

)3

Conne#ion 'eween wo s$'s#ri'ers is in &rogress. In !is #ase% !e &ower

#ons$m&ion de&ends on newor+ seings s$#! as D)F off:on%

R:<R:HR% !o&&ing se*$en#es% anenna.

ERS

S)D=

Mod$le is read( for ERS daa ransfer% '$ no daa is #$rrenl( sen or

re#ei"ed. In !is #ase% &ower #ons$m&ion de&ends on newor+ seings and

ERS #onfig$raion.

ERS

D)

)!ere is ERS daa ransfer > or )C or BDA in &rogress. In !is #ase%

&ower #ons$m&ion is relaed wi! newor+ seings >e.g. &ower #onrol

le"elAN $&lin+:downlin+ daa raes and ERS #onfig$raion >e.g. $sed m$li-

slo seingsA.

ower down ormal &ower down '( sending !e ) #ommand K)?C;D@1L or $sing !e ;R3<=.

)!e &ower managemen $ni s!$s down !e &ower s$&&l( for !e 'ase'and &ar of !e

mod$le% and onl( !e &ower s$&&l( for !e R)C is remained. Sofware is no a#i"e. )!e

serial &or is no a##essi'le. ower s$&&l( >#onne#ed o V)A remains a&&lied.

Minim$m

f$n#ionali(

mode

) #ommand K)?CBL #an 'e $sed o se !e mod$le o a minim$m f$n#ionali( mode

wi!o$ remo"ing !e &ower s$&&l(. In !is mode% !e R &ar of !e mod$le will no wor+ or

!e SIM #ard will no 'e a##essi'le% or 'o! R &ar and SIM #ard will 'e #losed% and !e

serial &or is sill a##essi'le. )!e &ower #ons$m&ion in !is mode is lower !an normal

mode.C!arge-onl(

mode

)!e mod$le will ener C!arge-onl( mode a$omai#all( w!en a #!arger and 'aer( are

#onne#ed o a swi#!ed-off SIM908. In !is mode% !e mod$le does no sear#! for newor+

and !as limied a##ess o a"aila'le ) #ommands a"aila'le. )!e mod$le #an also ener

C!arge-onl( mode from C!arge mode d$ring normal o&eraion '( normall( &owered down

!e mod$le.

C!arge mode

d$ring normal

o&eraion

)!e mod$le will a$omai#all( go o !is mode w!en a #!arger is #onne#ed o a ormal

o&eraion mode mod$le w!en 'aer( "olage is no lower !an 4.2V. ormal o&eraion mode

in#l$desJ S<<% ID<% )3% ERS ID< and ERS D).





2.3 SIM908 unctional Diagram

)!e following fig$re s!ows a f$n#ional diagram of SIM908J )!e ESM 'ase'and engine

)!e ES engine

las!

)!e ESM radio fre*$en#( &ar

)!e anenna inerfa#e

)!e o!er inerfa#es

igure " 6 SIM908 ,unctional iagram





' *ac+age In,ormation

3.1 *in out Diagram

igure $ 6 SIM908 pin out iagram Top )ie!:





3.2 *in Description

Ta3le - 6 *in escription

*in name *in num3er I7( Description Comment

*o!er supply

V) 62% 64 I ower s$&&l( 4.2V 5.8V

VR)C 52 I: ower s$&&l( for R)C I is re#ommended o

#onne# wi! a 'aer( or

a #a&a#ior >e.g. 5.$A.

VDD-<F) 55 2.8V o$&$ &ower s$&&l( If i is $n$sed% +ee& o&en.

ES-V)-

B)

7 2.8V o$&$ for ES a#i"e anenna If i is $n$sed% +ee& o&en.

ES-V)-I 6 I ES a#i"e anenna &ower s$&&l( If i is $n$sed% +ee& o&en.

ED 1% 2% 7% 10% 15% 4%

50% 51% 54% 7% 78%

60% 61% 65% 67% %8% 80

Ero$nd

Charge inter,ace

VCHE 5 I C!arger in&$

)<M_) 4 I aer( em&era$re sensor

*o!er on7o!n

;R3<= 4 I ;R3<= s!o$ld 'e &$lled low a

leas 1 se#ond and !en released o

&ower on:down !e mod$le.

$lled $& inernall(.

/uio inter,aces

MIC1 24 I Differenial a$dio in&$ If !ese &ins are $n$sed%

+ee& o&en.MIC1 25

S31 22 Differenial a$dio o$&$

S31 21

MIC2 2 I Differenial a$dio in&$

MIC2 28

S32 27 Differenial a$dio o$&$

S32 26Status

S))BS 72 ower on sa$s If !ese &ins are $n$sed%





+ee& o&en. <)IEH) 71 ewor+ sa$s

<CD inter,ace

DIS -C3 6 Dis&la( inerfa#e If !ese &ins are $n$sed%

+ee& o&en.DIS-D) I:

DIS -D:C 8

DIS -CS 9

I$C inter,ace

I2C-SD 76 I$C serial '$s daa If !ese &ins are $n$sed%

+ee& o&en.I2C-SC 77 I: I$C serial '$s #lo#+

Beypa inter,ace 7 G*I(s

EI1:3R0 41 I: EI1:+e(&ad row 0 If !ese &ins are $n$sed%

+ee& o&en.EI2:3R1 42 EI2:+e(&ad row 1

EI4:3R2 44 EI4:+e(&ad row 2

EI5:3C0 45 EI5:+e(&ad #ol$mn 0



Serial port

RFD 68 I Re#ei"e daa If onl( )FD and RFD

are $sed% i is s$ggesed

o &$ll down D)R% and

o!ers &ins #an 'e +e&

o&en.

)FD 1 )ransmi daa

R)S 66 Re*$es o send

C)S 6 I Clear o send

DCD 0 Daa #arrier dee#

RI 69 Ring indi#aor

D)R 2 I Daa erminal read(

G*S7De3ug inter,ace

ES:DE-)FD 17 or ES M< informaion o$&$ %

de'$gging and $&grading firmware

If !ese &ins are $n$sed%

+ee& o&en.ES:DE-RFD 16 I

SIM inter,ace

SIM-VDD 20 Volage s$&&l( for SIM #ard.

S$&&or 1.8V or 4V SIM #ard

ll signals of SIM

inerfa#e s!o$ld 'e

&roe#ed agains <SDwi! a )VS diode arra(.

SIM-D) 1 I: SIM daa in&$:o$&$

SIM-C3 19 SIM #lo#+

SIM-RS) 18 SIM rese

/DC

DC 5 I In&$ "olage rangeJ 0V 2.8V If i is $n$sed% +ee& o&en.

*ulse !ith moulation *AM :

;M1 58 ;M If !ese &ins are $n$sed%

+ee& o&en.;M2 59 ;M

;M4 70 ;M

GSM7G*S 2 inter,ace

ESM-) 79 I: ESM radio anenna #onne#ion Im&enden#e m$s 'e

#onrolled o 70O.





ES-) 9 I ES radio anenna #onne#ion Im&enden#e m$s 'e

#onrolled o 70O.

Not connect

C 2%6 - )!ese &ins s!o$ld 'e

+e& o&en.

'#' *ac+age Dimensions

BOTTOM VIEWTOP VIEW

ig$re 4 J Dimensions of SIM908（ BniJ mm）





igure . 6 2ecommene *C; ,ootprint outline

@nit6 mm

3.4 Mechanical imensions o, the 2 connector

)!e R #onne#or in !e mod$le side is an $lra small s$rfa#e mo$n #oaial #onne#ors >ar $m'erJ B.-R-

SM)% "ended '( HRSA. I !as !ig! &erforman#e wi! wide fre*$en#( range% s$rfa#e mo$na'le and reflows

soldera'le. ollowing fig$re are !e relaed &arameers. Cerainl( $ser #an "isi !&J::www.!irose-

#onne#ors.#om: for more informaion.

)o ge good R &erforman#e in $ser,s design% SIMCom s$ggess $ser o $se !e ma#!ing R ada&er #a'le

w!i#! is also s$&&lied '( HRS >ar $m'erJ B.-（ V） -050A% !e following fig$re is !e dimensions

of B. series R ada&er #a'le. Bser #an #ona# SIMCom for more informaion.







igure 8 6 2e,erence circuit o, the DC%DC po!er supply

)!e single 4.V i-ion #ell 'aer( #an 'e #onne#ed o SIM908 V) &ins dire#l(. $ !e i-Cd or i-MH

'aer( m$s 'e $sed #aref$ll(% sin#e !eir maim$m "olage #an rise o"er !e a'sol$e maim$m "olage of !e

mod$le and damage i.

;!en 'aer( is $sed% !e oal im&edan#e 'eween 'aer( and V) &ins s!o$ld 'e less !an 170mO.)!e following fig$re s!ows !e V) "olage dro& a !e maim$m &ower ransmi &!ase% and !e es #ondiion

is as followingJ

V)@5.0V%

V) '(&ass #a&a#ior C@100P anal$m #a&a#ior ><[email protected]%

no!er V) '(&ass #a&a#ior C@1P.

igure 9 6 V;/T )oltage rop uring transmit 3urst

.#"#" Minimiing Voltage Drop o, V;/T

;!en designing !e &ower s$&&l( in $ser,s a&&li#aion% &a( s&e#ial aenion o &ower losses. <ns$re !a !e

in&$ "olage ne"er dro&s 'elow 4.1V e"en w!en #$rren #ons$m&ion rises o 2 in !e ransmi '$rs. If !e

&ower "olage dro&s 'elow 4.1V% !e mod$le ma( 'e s!$ down a$omai#all(. )!e C ra#es from !e V)

&ins o !e &ower s$&&l( m$s 'e wide eno$g! >a leas 60milA o de#rease "olage dro&s in !e ransmi '$rs.

)!e &ower IC and !e '(&ass #a&a#ior s!o$ld 'e &la#ed o !e mod$le as #lose as &ossi'le.

igure "0 6 The minimal V;/T )oltage re?uirement at V;/T rop

.#"#$ Monitoring *o!er Supply

)!e ) #ommand K)?CCL #an 'e $sed o monior !e V) "olage. or deail% &lease refer o document [1].





4.2 *o!er on7o!n Scenarios

.#$#" *o!er on SIM908

4.2.1.1

Turn on SIM900 @sing the *A2B *in *o!er on:

Bser #an &ower on SIM908 '( &$lling down !e ;R3<= &in for a leas 1 se#ond and release. )!is &in is

alread( &$lled $& o 4V in !e mod$le inernal% so eernal &$ll $& is no ne#essar(. Referen#e #ir#$i is s!own as

'elow.

igure "" 6 *o!ere on7o!n moule using transistor

igure "$ 6 *o!ere on7o!n moule using 3utton

)!e &ower on s#enarios is ill$sraed as following fig$re.





igure "' 6 Timing o, po!er on moule

;!en &ower on &ro#ed$re is #om&leed% SIM908 will send following BRC o indi#ae !a !e mod$le is read( o

o&erae a fied 'a$d rae.

RDY

)!is BRC does no a&&ear w!en a$o'a$ding f$n#ion is a#i"e.

ote! "ser #an use $% #ommand &$%'I(R)*+ to set a ,i*ed -aud rate and sae the #on,iguration to non/olatile ,lash memory.

$,ter the #on,iguration is saed as ,i*ed -aud rate the Code &RDY+ should -e re#eied ,rom the serial port eery time hen

SIM03 is poered on. 4or details please re,er to the #hapter &$%'I(R+ in do#ument 516.

4.2.1.2

Turn on the SIM908 using the VCHG signal

)!e SIM908 will 'e a$omai#all( $rned on w!en a #!arger is #onne#ed o !e swi#!ed-off SIM908 of w!i#!

V) &in "olage is greaer !an 4.2V. SIM908 will go ino !e C!arge-onl( Mode. In !is mode% !e mod$le

does no regiser o !e newor+% and !as onl( a few ) #ommands a"aila'le.

;!en mod$le is &owered on $sing !e VCHE signal% SIM908 sends o$ res$l #ode as following w!en fied

'a$d rae seJ

RDY

C7$R89/:LY M:D9

;!en $ser dri"es !e ;R3<= of C!arge-onl( mode SIM908 o a low le"el "olage for a &eriod of ime >&lease

refer o 4igure 1; %iming o, poer on moduleA% !e SIM908 will &ower $& and go ino C!arge mode d$ring

normal o&eraion. In !is #ase% SIM908 sends o$ res$l #ode as followingJ

4rom C7$R89/:LY M:D9 to :RM$L M:D9

In C!arge mode d$ring normal o&eraion% all o&eraions and ) #ommands are a"aila'le.

.#$#$ *o!er o!n SIM908

SIM908 will 'e &owered down in !e following si$aions ：

ormal &ower down &ro#ed$reJ &ower down SIM908 '( !e ;R3<= &in.

ormal &ower down &ro#ed$reJ &ower down SIM908 '( ) #ommand K)?C;D@1L.

'normal &ower downJ o"er-"olage or $nder-"olage a$omai# &ower down.

'normal &ower downJ o"er-em&era$re or $nder-em&era$re a$omai# &ower down.





4.2.2.1

*o!er o!n SIM908 3y the *A2B *in

Bser #an &ower down SIM908 '( &$lling down !e ;R3<= &in for a leas 1 se#ond and release. lease refer

o !e &ower on #ir#$i. )!e &ower down s#enario is ill$sraed in following fig$re.

igure ". 6 Timing o, po!er o!n SIM908 3y *A2B

)!is &ro#ed$re ma+es !e mod$le log off from !e newor+ and allows !e sofware o ener ino a se#$re sae o

sa"e daa 'efore #om&leel( s!$ down.

efore !e #om&leion of !e &ower down &ro#ed$re% !e mod$le will send BRCJ

:RM$L (:W9R D:W

!is momen% ) #ommands #an no 'e ee#$ed an( more% and onl( !e R)C is sill a#i"e. ower down

mode #an also 'e indi#aed '( S))BS &in% w!i#! is a low le"el a !is ime.

4.2.2.2

*o!er o!n SIM908 3y /T Comman

SIM908 #an 'e &owered down '( ) #ommand K)?C;D@1L. )!is &ro#ed$re ma+es !e mod$le log off

from !e newor+ and allows !e sofware o ener ino a se#$re sae o sa"e daa 'efore #om&leel( s!$ down.

efore !e #om&leion of !e &ower down &ro#ed$re% !e mod$le will send BRCJ

:RM$L (:W9R D:W

!is momen% ) #ommands #an no 'e ee#$ed an( more% and onl( !e R)C is sill a#i"e. ower down

mode #an also 'e indi#aed '( S))BS &in% w!i#! is a low le"el a !is ime.

or deail a'o$ !e ) #ommand K)?C;DL% &lease refer o document [1]







4A ower on !e mod$le.

igure "- 6 Timing o, restart SIM908

4.3 *o!er Sa)ing Moe

SIM908 !a"e wo slee& modesJ slee& mode 1 is ena'led '( !ardware &in D)RN slee& mode 2 is onl( ena'led '(serial &or regardless of !e D)R. In slee& mode% !e #$rren of mod$le is "er( low. )!e ) #ommand

K)?CB@f$nTL #an 'e $sed o se SIM908 ino minim$m f$n#ionali(. ;!en SIM908 is in slee& mode and

minim$m f$n#ionali(% !e #$rren of mod$le is lowes.

.#'#" Minimum unctionality Moe

)!ere are !ree f$n#ionali( modes% w!i#! #o$ld 'e se '( !e ) #ommand K)?CB@f$nTL. )!e #ommand

&ro"ides !e #!oi#e of !e f$n#ionali( le"els f$nT@0%1%5.

0J minim$m f$n#ionali(.

1J f$ll f$n#ionali( >defa$lA.

5J flig! mode >disa'le R f$n#ionA.

Minim$m f$n#ionali( mode minimies !e #$rren #ons$m&ion o !e lowes le"el. If SIM908 is se o

minim$m f$n#ionali( '( K)?CB@0L% !e R f$n#ion and SIM #ard f$n#ion will 'e disa'led. In !is #ase%

!e serial &or is sill a##essi'le% '$ all ) #ommands #orrelai"e wi! R f$n#ion and SIM #ard f$n#ion will

no 'e a##essi'le.

or deailed informaion a'o$ !e ) Command K)?CB@f$nTL% &lease refer o document [1].

Ta3le & 6 The Current consumption o, Minimum unctionality Moe

E,unF Current consumptionu/: sleep moe:

0 671

1 1700

5 17

.#'#$ Sleep Moe " /TCSC<B":

Bser #an #onrol SIM908 mod$le o ener or ei !e slee& mode 1 >)?CSC3@1A '( D)R signal. ;!en D)R





is in !ig! le"el and wi!o$ inerr$& >on air and !ardware s$#! as EI inerr$& or daa in serial &orA% SIM908

will ener slee& mode 1 a$omai#all(. In !is mode% SIM908 #an sill re#ei"e &aging or SMS from newor+ '$

!e serial &or is no a##essi'le.

ote! 4or SIM03 it re=uests to set $% #ommand &$%'CSCL>)1+ and ensure D%R at high leel to ena-le the sleep mode 1?

the de,ault alue is 0 hi#h #an not ma@e the module to enter sleep mode. 4or more details please re,er to do#ument 516.

.#'#' Aa+e @p SIM908 ,rom Sleep Moe " /TCSC<B":

;!en SIM908 is in slee& mode 1 >)?CSC3@1A% !e following me!ods #an wa+e $& !e mod$leJ

$ll down D)R &in.

)!e serial &or will 'e a#i"e afer D)R &in is &$lled o low le"el for a'o$ 70ms.

Re#ei"e a "oi#e or daa #all from newor+.

Re#ei"e a SMS from newor+.

.#'#. Sleep Moe $ /TCSC<B$:

In !is mode% SIM908 will #onin$o$sl( monior !e serial &or daa signal. ;!en !ere is no daa ransfer o"er 7

se#onds on !e RFD signal and !ere is no on air and !ardware inerr$&s >s$#! as EI inerr$&A% SIM908 will

ener slee& mode 2 a$omai#all(. In !is mode% SIM908 #an sill re#ei"e &aging or SMS from newor+ '$ !e

serial &or is no a##essi'le.

ote! 4or SIM03 It is re=uested to set $% #ommand &$%'CSCL>)2+ to ena-le the sleep mode 2? the de,ault alue is 0 hi#h

#an not ma@e the module to enter sleep mode. 4or more details please re,er to do#ument 516.

.#'#- Aa+e @p SIM908 ,rom Sleep Moe $ /TCSC<B$:

;!en SIM908 is in slee& mode 2 >)?CSC3@2A% !e following me!ods #an wa+e $& !e mod$leJ

Send daa o SIM908 "ia main serial &or. G

Re#ei"e a "oi#e or daa #all from newor+.

Re#ei"e a SMS from newor+.

ote! %he ,irst -yte o, the userAs data ill not -e re#ogniBed.

.#. Charging inter,ace

SIM908 !as inegraed a #!arging #ir#$i inside !e mod$le for i-Ion 'aeries #!arging #onrol% w!i#! ma+e i

"er( #on"enien for $ser,s a&&li#aions !a s$&&or 'aer( #!arging. #ommon #onne#ion is s!own in !e

following fig$reJ





Mod$le9aer( 6a#+

R )<M6

)!ermisor

)<M6_9.)

V9.)

VCHE

7V

igure "& 6 SIM908 !ith 3attery charger an pac+ connection

aer( em&era$re meas$remen is a #$somiaion f$n#ion w!i#! is s$&&ored '( !e sofware in !e mod$le.

In a'o"e fig$re% !e R )<M is a )C !ermisor% and i is re#ommended o $se MBR) C17FH10404RC. Is

im&edan#e is 103o!m a 27 . Refer o !e a'o"e fig$re for !e referen#e #ir#$i.℃

.#.#" ;attery pac+ characteristics

SIM908 !as o&imied !e #!arging algori!m for !e i-Ion 'aer( !a mees !e #!ara#erisi#s lised 'elow.

)!e maim$m #!arging "olage of !e i-Ion 'aer( &a#+ is 5.2V and !e re#ommended #a&a#i( is

1100m!. )!e aer( &a#+s wi! more !an 1100 m! #a&a#i( will a+e more ime for #!arging.

)!e 'aer( &a#+ s!o$ld !a"e a &roe#ion #ir#$i o a"oid o"er#!arging% dee& dis#!arging and o"er-

#$rren% and !e #ir#$i s!o$ld 'e insensii"e o &$lsed #$rren.

)!e inernal resisan#e of !e 'aer( &a#+ in#l$ding &roe#ion #ir#$i s!o$ld 'e as low as &ossi'le. Is

re#ommended "al$e does no e#eed 170mO.

)!e 'aer( &a#+ m$s 'e &roe#ed from re"erse &ole #onne#ion.

n !e SIM908% !e '$ild-in #ir#$i of !e &ower managemen #!i&se moniors !e s$&&l( "olage #onsanl(.

n#e !e Bnder-"olage is dee#ed% !e SIM908 will 'e &owered down a$omai#all(.

.#.#$ 2ecommene 3attery pac+

ollowing is !e s&e#ifi#aion of re#ommended 'aer( &a#+J

Ta3le 4 6 Speci,ication o, recommene 3attery pac+

Items Description

aer( (&e i-ion

Man$fa#$rer Uiade <nerg( )e#!nolog(

ormal "olage 4.V

Ca&a#i( RM 1100m!

C!arge Volage 5.2000.070V





Ma C!arge C$rren 1.0C

C!arge Me!od CC : CV >Consan C$rren : Consan VolageA

Ma Dis#!arge C$rren 1.0C >for #onin$o$s dis#!arging modeA

Dis#!arge C$-off Volage 4.0V: #ell

Inernal resisan#e IniialQ140mO

.#.#' Implemente charging techni?ue

SIM908 !as 'aer( #!arging f$n#ion. )!ere are !ree &ins relaed o !e 'aer( #!arging f$n#ionJ !ere are

VCHE% V) and )<M_):DC0 &ins. )!e VCHE in is dri"en '( an eernal "olage% s(sem #an $se !is

in o dee# a #!arger s$&&l( and &ro"ide mos #!arging #$rren !ro$g! SIM908 mod$le o 'aer( w!en

#!arging is in fas #!arge sae. V) &in gi"es #!arging #$rren o eernal 'aer( from SIM908 mod$le.

)<M_) in is for $ser o meas$re !e 'aer( em&era$re. e !is in o&en if 'aer( em&era$re

meas$remen is no $ser,s design #on#ern.

I is "er( sim&le o im&lemen #!arging f$n#ion% $ser /$s needs o #onne# !e #!arger o !e VCHE in and

#onne# !e 'aer( o !e V) in.

SIM908 'aer( #!arging !a&&ens afer dee#ing #!arger s$&&l( and !e &resen#e of 'aer(. If !ere is no

#!arger s$&&l( or no 'aer( &resen% #!arging f$n#ion will no 'e ena'led.

ormall(% !ere are !ree main saes in !e w!ole #!arging &ro#ed$re.

DD #!arge >$ll-$& modeA and BV #!arge >re-#!arge modeAN

as #!argeN

DD<( charge an @V<( charge6

DD is !e sae of 'aer( w!en is "olage is $nder 1.7V. nd BV means !e 'aer( "olage is less !an

4.4V and more !an 1.7V. )!e 'aer( is no s$ia'le for fas #!arging w!en is #ondiion is DD or BV.

)!e SIM908 &ro"ides a small #onsan #$rren o !e 'aer( w!en !e 'aer( is 'eween DD and BV. In

DD #!arging sae% SIM908 gi"es o$ 1m #$rren o !e 'aer(. nd in BV #!arging sae% SIM908

&ro"ides a'o$ less !an 200m #$rren o !e 'aer(.

DD #!arging erminaes w!en !e 'aer( "olage rea#!es 1.7V. BV #!arging erminaes w!en !e 'aer(

"olage is $& o 4.4V. o! DD and BV #!arge are #onrolled '( !e SIM908 !ardware onl(.

ast charge6If !ere is a #!arger s$&&l( and 'aer( &resen and !e 'aer( is no in DD and BV% SIM908 will ener

fas #!arge sae. as #!arge is #onrolled '( !e sofware o ma+e !e #$rren:"olage reg$laion. )!e #!arging

s#!eme for !e i-Ion 'aer( is #onsan #$rren >a'o$ 770mA firs% followed '( #onsan "olage #!arging

on#e 5.2V is rea#!ed. C!arging is so&&ed w!en !e #!arging #$rren a #onsan "olage !as de#reased down o

!e &re-se #$rren.

.#.#. (perating moes uring charging

)!e 'aer( #an 'e #!arged d$ring "ario$s o&eraing mode. )!a means !a #!arging #an 'e in &rogress w!ile

SIM908 is in ormal mode >S<<% ID<% )3% ERS ID< or ERS D) modeA. In !is #ase !e "olage

s$&&l( s!o$ld 'e s$ffi#ien. Here C!arging in ormal mode is named as C!arge mode.

If !e #!arger is #onne#ed o !e mod$le,s VCHE in and !e 'aer( is #onne#ed o !e V) in w!ile





SIM908 is in ;<R D; mode% SIM908 will go ino !e C!arge-onl( mode.

)!e following a'le gi"es !e differen#e 'eween C!arge mode and C!arge-onl( mode：

Ta3le 8 6 Charge operating moes

Ho! to acti)ate moe eatures

C h a r g e M o e

Conne# #!arger o mod$le,s VCHE in

and #onne# 'aer( o V) in of

mod$le w!ile SIM908 is in ormal

o&eraing mode% in#l$dingJ

ID<% )3 modeN S<< mode e#N

ESM remains o&eraional and

regisers o ESM newor+ w!ile

#!arging is in &rogressN

)!e serial inerfa#es are a"aila'le in

ID<% )3 mode% !e ) #ommand

se #an 'e $sed f$ll( in !is #aseN

In S<< mode% !e serial inerfa#es are

no a"aila'le. n#e !e serial &or is

#onne#ed and !ere is daa in ransfer.

SIM908 will ei !e S<< mode.

C h a r g e % o n l y M o e Conne# #!arger o mod$le,s VCHE in

w!ile SIM908 is in ;<R D;

mode.

IMR))J Here C!arge-onl( mode is

#!arging w!en &ower is down% i means

!a no all sofware as+s are r$nning.

aer( #an 'e #!arged w!en ESM

engine is no regisered o ESM

newor+N

nl( a few ) #ommands is

a"aila'le% as lised 'elow.

ote! <$% #an not proide more than m$ #urrent hile SIM03 module is during the DDL: #harge state. In other ords it

is strongly re#ommended that <$% should not -e the main poer supply in the appli#ation su-system i, SIM03 DDL:

#harging state o##urs.

Ta3le 9 6 /T Comman usually use in Charge%only moe

/T comman unction

)?CC3 Se daa and ime of R)C

)?C;D ower down)?CC Indi#aed #!arge sae and "olage

)?CB Sar or #lose !e &roo#ol

Se ) #ommand /TC@N "L% mod$le

#an 'e ransferred from C!arge-onl( mode

o C!arging in normal mode. In C!arge-onl(

mode% !e defa$l "al$e is 0.

.#.#- Charger re?uirements

ollowing is !e re*$iremens of #!arger for SIM908.

- Sim&le ransformer &ower &l$g









igure $$ 6 Connection o, 2=D an T=D only

.#&#" unction o, Serial *ort an De3ug *ort

Serial &orJ

$ll modem de"i#e.

Conains daa lines )FD and RFD% !ardware flow #onrol lines R)S and C)S% sa$s lines D)R% DCD and

RI.

Serial &or #an 'e $sed for CSD F% ERS ser"i#e and ) #omm$ni#aion. I #an also 'e $sed for

m$li&leing f$n#ion. or deails a'o$ m$li&leing f$n#ion% &lease refer o document [3].

Serial &or s$&&ors !e following 'a$d raesJ

1200% 2500% 5800% 9600% 19200% 48500% 7600 and 117200'&s

$o'a$ding onl( s$&&ors !e following 'a$d raesJ

1200% 2500% 5800% 9600% 19200% 48500 and 7600'&s

)!e defa$l seing is a$o'a$ding.

$o'a$ding allows SIM908 o a$omai#all( dee# !e 'a$d rae of !e !os de"i#e. a( more aenion o !e

following re*$iremensJ

Synchroniation 3et!een DT an DC6

;!en DC< &owers on wi! a$o'a$ding ena'led% $ser m$s firsl( send #!ara#er KL o s(n#!ronie !e

'a$d rae. I is re#ommended o send K)L $nil D)< re#ei"es !e K3L res&onse% w!i#! means D)< andDC< are #orre#l( s(n#!ronied. or more informaion &lease refer o !e ) #ommand K)?IRL.

2estrictions o, auto3auing operation6

)!e D)< serial &or m$s 'e se a 8 daa 'is% no &ari( and 1 so& 'i.

)!e BRC s$#! as WRD=W% W?CBJ 1W and W?CIJ R<D=L will no 'e re&ored.

ote! "ser #an use $% #ommand &$%'I(R)*+ to set a ,i*ed -aud rate and the setting ill -e saed to non/olatile ,lash memory

automati#ally. $,ter the #on,iguration is set as ,i*ed -aud rate the "RC su#h as ERDYE E'C4"! 1E and E'C(I! R9$DY+

ill -e reported hen SIM03 is poered on.

De'$g &orJ Bsed for de'$gging and $&grading firmware.

De'$g &or s$&&ors !e 'a$d rae of 117200'&s.





.#&#$ So,t!are @pgrae an De3ug

Refer o !e following fig$re for de'$gging and $&grading sofware.

igure $' 6 Connection ,or so,t!are upgraing an e3ugging

)!e serial &or and !e de'$g &or s$&&or !e CMS le"el. If $ser #onne#s !e mod$le o !e #om&$er% !e

le"el s!ifer s!o$ld 'e added 'eween !e DC< and D)<.

or deails a'o$ sofware $&grading%&lease refer o document [4].

4.7 /uio Inter,aces

SIM908 &ro"ides wo analog in&$s% MIC1:1 and MIC2:2% w!i#! #o$ld 'e $sed for ele#re mi#ro&!one.

)!e mod$le also &ro"ides wo analog o$&$s% S31:1 and S32:2. )!e o$&$ #an dire#l( dri"e 42O

re#ei"er.

) #ommand K)?CMICL is $sed o ad/$s !e in&$ gain le"el of mi#ro&!one. ) #ommand K)?SID<)L is

$sed o se !e side-one le"el. In addiion% ) #ommand K)?CVL is $sed o ad/$s !e o$&$ gain le"el. or

more deails% &lease refer o document [1] and document [5].

In order o im&ro"e a$dio &erforman#e% !e following referen#e #ir#$is are re#ommended. )!e a$dio signals

!a"e o 'e la(o$ a##ording o differenial signal la(o$ r$les as s!own in following fig$res. If $ser needs o $se

an am&lifier #ir#$i for a$dio% aional Semi#ond$#or Com&an(,s M5890 is re#ommended.





.#4#" Spea+er Inter,ace Con,iguration

igure $. 6 Spea+er re,erence circuit

igure $- 6 Spea+er !ith ampli,ier re,erence circuit

.#4#$ Microphone Inter,aces Con,iguration

igure $& 6 Microphone re,erence circuit

Mi#ro&!one in&$ also #o$ld 'e $sed o I<-I in&$. or deails% &lease refer o document [6].







$&$ swing

Volage

>single endedA

1.1 V&&

$&$ swing

Volage

>differenialA

2.2 V&&

4.8 SIM Car Inter,ace

.#8#" SIM Car /pplication

)!e SIM inerfa#e #om&lies wi! !e ESM !ase 1 s&e#ifi#aion and !e new ESM !ase 2? s&e#ifi#aion for

S) 65 +'&s SIM #ard. o! 1.8V and 4.0V SIM #ard are s$&&ored. )!e SIM inerfa#e is &owered from an

inernal reg$laor in !e mod$le.

I is re#ommended o $se an <SD &roe#ion #om&onen s$#! as S) >www.s.#om A <SD6V1;7 or S<MI

>www.onsemi.#om A SM07C.)!e &$ll $& resisor >173OA on !e SIM_D) line is alread( added in !e

mod$le inernal. oe !a !e SIM &eri&!eral #ir#$i s!o$ld 'e #lose o !e SIM #ard so#+e. )!e referen#e

#ir#$i of !e 8-&in SIM #ard !older is ill$sraed in !e following fig$re.

igure $8 6 2e,erence circuit o, the 8%pin SIM car holer

)!e SIM_R<S<C< &in is $sed for dee#ion of !e SIM #ard !o &l$g in. Bser #an sele# !e 8-&in SIM #ard

!older o im&lemen SIM #ard dee#ion f$n#ion. ) #ommand K)?CSD)L is $sed o ena'le or disa'le SIM

#ard dee#ion f$n#ion. or deails of !is ) #ommand% &lease refer o document [1].

If !e SIM #ard dee#ion f$n#ion is no $sed% $ser #an +ee& !e SIM_R<S<C< &in o&en. )!e referen#e

#ir#$i of 6-&in SIM #ard !older is ill$sraed in !e following fig$re.





igure $9 6 2e,erence circuit o, the &%pin SIM car holer

.#8#$ Design Consierations ,or SIM Car Holer

or 6-&in SIM #ard !older% SIMCom re#ommends o $se m&!enol C0 10M006 7122 .Bser #an "isi!&J::www.am&!enol.#om for more informaion a'o$ !e !older.

igure '0 6 /mphenol C404 "0M00& -"$$ SIM car holer

Ta3le "$ 6 *in escription /mphenol SIM car holer:

*in name Signal Description

C1 SIM-VDD SIM #ard &ower s$&&l(

C2 SIM-RS) SIM #ard rese

C4 SIM-C3 SIM #ard #lo#+

C7 ED Conne# o ED

C6 V o #onne#





C SIM-D) SIM #ard daa I:

or 8 &ins SIM #ard !older% SIMCom re#ommends o $se Mole 91228.Bser #an "isi !&J::www.mole.#om for

more informaion a'o$ !e !older.

igure '" 6 Mole5 9"$$8 SIM car holer

Ta3le "' 6 *in escription Mole5 SIM car holer:

*in name Signal Description

C1 SIM-VDD SIM #ard &ower s$&&l(

C2 SIM-RS) SIM #ard rese

C4 SIM-C3 SIM #ard #lo#+

C5 ED Conne# o ED

C7 ED Conne# o ED

C6 V o #onne#

C SIM-D) SIM #ard daa I:

C8 SIM-R<S<C< Dee# SIM #ard &resen#e

4.9 <CD Display7S*I Inter,ace

SIM908 &ro"ides a serial CD dis&la( inerfa#e. I #o$ld also 'e $sed as SI inerfa#e in !e em'edded )





a&&li#aion. or deails a'o$ em'edded ) a&&li#aion% &lease refer o document [7].

ote! %his ,un#tion is not supported in the standard ,irmare. I, user ants this ,un#tion the ,irmare must -e #ustomiBed.

(lease #onta#t SIMCom ,or more details.

4.10 Beypa Inter,ace

)!e +e(&ad inerfa#e #onsiss of 4 +e(&ad #ol$mn o$&$s and 4 +e(&ad row in&$s. )!e 'asi# #onfig$raion is 4

+e(&ad #ol$mns and 4 +e(&ad rows% oal 9 +e(s.

Ta3le ". 6 *in e,inition o, the +eypa inter,ace

)!e +e(&ad inerfa#e allows a dire# eernal mari #onne#ion. (&i#al re#ommended #ir#$i of !e +e(&ad is

s!own in !e following fig$re.

igure '$ 6 2e,erence circuit o, the +eypa inter,ace

ote! %his ,un#tion is not supported in the standard ,irmare. I, user ants this ,un#tion the ,irmare must -e #ustomiBed.

(lease #onta#t SIMCom ,or more details.

.#"" /DC

SIM908 &ro"ides an a$iliar( DC% w!i#! #an 'e $sed o meas$re !e "olage. Bser #an $se ) #ommand

K)?CDCL o read !e "olage "al$e. or deails of !is ) #ommand% &lease refer o document [1].


*in name *in num3er De,ault ,unction Secon ,unction De,ault state

EI1: 3R0 41 EI1 3e(&ad mari $&$% $ll downEI2: 3R1 42 EI2 $&$% $ll down

EI4: 3R2 44 EI4 $&$% $ll down

EI5: 3C0 45 EI5 $&$% $ll down

EI7: 3C1 47 EI7 $&$% $ll down

EI6: 3C2 46 EI6 $&$% $ll down




Ta3le "- 6 /DC speci,ication

*arameter Min Typ Ma5 @nit

Volage range 0 - 2.8 V

DC Resol$ion - 10 - 'is

Sam&ling rae - - 2003 H

4.12 2I ;eha)iors

Ta3le "& 6 2I ;eha)iors

State 2I response

Sand'( Hig!

Voi#e #all )!e &in is #!anged o low. ;!en an( of !e following e"ens o##$r% !e &in will 'e #!angedo !ig!J

（ 1） <sa'lis! !e #all

（ 2） Hang $& !e #all

Daa #all )!e &in is #!anged o low. ;!en an( of !e following e"ens o##$r% !e &in will 'e #!anged

o !ig!J

（ 1） <sa'lis! !e #all

（ 2） Hang $& !e #all

SMS )!e &in is #!anged o low% and +e& low for 120ms w!en a SMS is re#ei"ed. )!en i is

#!anged o !ig!.

BRC )!e &in is #!anged o low% and +e& low for 120ms w!en some BRCs are re&ored. )!en i is

#!anged o !ig!. or more deails% &lease refer o document [8].

)!e 'e!a"ior of !e RI &in is s!own in !e following fig$re w!en !e mod$le is $sed as a re#ei"er.

igure '' 6 2I 3eha)iour o, )oice calling as a recei)er

igure '. 6 2I 3eha)iour o, ata calling as a recei)er





igure '- 6 2I 3eha)iour o, @2C or recei)e SMS

Howe"er% if !e mod$le is $sed as #aller% !e RI will remain !ig!. lease refer o !e following fig$re.

igure '& 6 2I 3eha)iour as a caller

4.13 Net!or+ Status Inication

)!e <)IEH) &in #an 'e $sed o dri"e a newor+ sa$s indi#aion <D. )!e sa$s of !is &in is lised in

following a'leJ

Ta3le "4 6 Status o, the NT<IGHT pin

Status SIM908 3eha)ior

ff SIM908 is no r$nning

65ms n: 800ms ff SIM908 no regisered !e newor+

65ms n: 4000ms ff SIM908 regisered o !e newor+

65ms n: 400ms ff ERS #omm$ni#aion is esa'lis!ed

referen#e #ir#$i is re#ommended in !e following fig$reJ

igure '4 6 2e,erence circuit o, NT<IGHT







and #onne# o mod$le,s anenna &ad !ro$g! mi#rosri& line or o!er (&e R ra#e w!i#! im&enden#e m$s 'e

#onrolled in 70O. )o fa#iliae !e anenna $ning and #erifi#aion es% a R #onne#or and an anenna ma#!ing

#ir#$i s!o$ld 'e added. )!e following fig$re is !e re#ommended #ir#$i.

igure '8 6 /ntenna matching circuit

In !is fig$re% !e #om&onens R101%R102%C101 and C102 is $sed for anenna ma#!ing% !e #om&onens, "al$e

onl( #an 'e go afer !e anenna $ning. Bs$all(% ma#!ing #om&onens, "al$e is &ro"ided '( anenna "endor% !e

defa$l "al$e of R101 and R102 are 0O% and reser"e !e &la#e of C101 and C102 wi!o$ soldering.

)!e R es #onne#or in a'o"e fig$re is $sed for #ond$#ed R &erforman#e es% and s!o$ld 'e &la#ed as #lose

as &ossi'le o !e mod$le,s R_) &in. )!e ra#es in 'old (&e s!o$ld 'e reaed as 70O im&edan#e #onrolled

line in C la(o$. or deails a'o$ radio fre*$en#( ra#e la(o$% &lease refer o document [9].

- G*S /pplication Inter,ace

SIM908 &ro"ide a !ig!-&erforman#e 1 ES sol$ion for #ell$lar !andse a&&li#aions. )!e sol$ion offers 'es-

in-#lass a#*$isiion and ra#+ing sensii"i(% )ime-)o-irs-i >))A and a##$ra#(. )!e ES engine s$&&ors

'o! f$ll(-a$onomo$s o&eraions for $se in !and!eld #ons$mer na"igaion de"i#es and o!er sandalone

na"igaion s(sems.

)!e ES M< informaion is o$&$ '( D<BE &or. )!e defa$l 'a$d rae is 117200'&s.

)!e ES engine is #onrolled '( ESM engine% so w!en i is ne#essar( o r$n ES ， !e ESM engine m$s 'e

&owered on and no in S<< mode.

ll !e ES f$n#ion is #onrolled '( ) #ommand "ia serial &or. )!e ES f$n#ion ) #ommands are lised in

!e following a'le.

Ta3le "9 6 *in e,inition o, the G*I( inter,ace

Comman Description

)?CES;R ES ;<R C)R

)?CESRS) ES MD< R<S<) >H):;RM:CDA

)?CESS))BS E<) CBRR<) ES S))BS





)?CESB) ES M< D) B)B) C)R

)?CESI E<) CBRR<) ES C)I I

)?CESIR S<) ES M< B)B) BR) S

or deails of !ese ) #ommand% &lease refer o document [1].

5.1 G*S operating moes

ES !as wo o&eraing modes w!i#! #an 'e #onrolled '( ) #ommand.

#i"e modeJ ES is a#i"e as a ES re#ei"er. )!e ES engine will a$omai#all( a#*$ire and ra#+ ES

saellies.

ower down modeJ )!e ES engine will 'e se ino !is mode '( sending ) #ommand K)?CES;R@0L. In

!is mode !e inernal &ower s$&&l( for ES will 'e s!$down% and !e #$rren #ons$m&ion is "er( low. )!e las

&osiion% #$rren ime and e&!emeris daa will 'e sored in !e ESM !os memor(.

5.2 *o!er on7o!n Scenarios

-#$#" *o!er on G*S engine

Bser #an &ower on ES engine '( sending ) #ommand K)?CES;R@1L.

-#$#$ *o!er o!n G*S engine

Bser #an &ower down ES engine '( sending ) #ommand K)?CES;R@0L.

5.3 G*S%V/NT%(@T an G*S%V/NT%IN

ES-V)-B) is a 2.8V o$&$ for a#i"e eernal anenna% if !e a#i"e eernal anenna wor+s a 2.8V

"olage s$&&l( domain% $ser #an #onne# !e ES-V)-B) and ES-V)-I dire#l(. If !e anenna,s

&ower is no 2.8V% a &ro&er "olage s!o$ld 'e &ro"ided o !e &in ES-V)-I de&ending on !e a#i"e

anenna% and !e &in ES-V)-B) s!o$ld 'e +e& o&en. or &assi"e anennas% 'o! !e &in ES-V)-B)

and !e &in ES-V)-I s!o$ld 'e +e& o&en.

-#. /ntenna Inter,ace

-#.#" /ntenna Inter,ace

SIM908 &ro"ides a SM) &ad and a #onne#or ES R anenna inerfa#e. If $sers $se SM) &ad ES R inerfa#e

!e #$somer,s anenna s!o$ld 'e lo#aed in !e #$somer,s main 'oard and #onne#ed o mod$le,s anenna &ad

!ro$g! mi#rosri& line or o!er (&e R ra#e w!i#! im&enden#e m$s 'e #onrolled in 70O. )o fa#iliae !e





anenna $ning and #erifi#aion es% a R #onne#or and an anenna ma#!ing #ir#$i s!o$ld 'e added. )!e

following fig$re is !e re#ommended #ir#$i.

igure '9 6 /ntenna matching circuit

In !is fig$re% !e #om&onens R101% C101 and C102 is $sed for anenna ma#!ing% !e #om&onens, "al$e onl(

#an 'e go afer !e anenna $ning. Bs$all(% ma#!ing #om&onens, "al$e is &ro"ided '( anenna "endor% !e

defa$l "al$e of R101 is 0O% and $sers need o reser"e !e &la#e of C101 and C102 wi!o$ soldering.

)!e ra#es in 'old (&e s!o$ld 'e reaed as 70O im&edan#e #onrolled line in C la(o$.

-#.#$ G*S /ntenna Choice Consieration

)o o'ain e#ellen ES re#e&ion &erforman#e% a good anenna will alwa(s 'e re*$ired. )!e anenna is !e mos

#rii#al iem for s$##essf$l ES re#e&ion in a wea+ signal en"ironmen. ro&er #!oi#e and &la#emen of !e

anenna will ens$re !a saellies a all ele"aions #an 'e seen% and !erefore% a##$rae fi meas$remens are

o'ained.

Mos #$somers #onra# wi! anenna design !o$ses o &ro&erl( meas$re !e radiaion &aern of !e final

mo$ned #onfig$raion in a &lasi# !o$sing wi! asso#iaed #om&onens near !e anenna. inear anennas are

'e#oming more &o&$lar% and !e gain is reasona'le% sin#e a smaller gro$nd &lane #an 'e $sed.

Bser #an #onsider following fa#ors asJ

C!oose a linear anenna wi! a reasona'l( $niform !emis&!eri#al gain &aern of T-5di.

Bse of an anenna wi! lower gain !en !is will gi"e less !an desira'le res$ls. lease noe !a a RHC

anenna wi! a gain of 4di% e*$aes o a linear &olaried anenna of 0di.

ro&er gro$nd &lane siing is a #rii#al #onsideraion for small ES anennas.

ro&er &la#emen of !e ES anenna s!o$ld alwa(s 'e !e IRS) #onsideraion in inegraing !e SIM18

ES Mod$le.

If !e #$somer,s design will allow for a #erami# RHC &a#! anenna wi! an a&&ro&riael( sied gro$nd &lane%

and !e &a#! is normall( oriened owards !e s+(% !en !a &ari#$lar sol$ion $s$all( wor+s !e 'es. oe !a

if !e &a#! anenna gro$nd &lane is less !an 6060mm% !en #om&romises o !e 'eam wid! and gain &aern

#o$ld res$l. Bs$all( !e gain 'e#omes "er( dire#ional% and looses se"eral d of &erforman#e. Sin#e res$ls #an

"ar(% meas$ring !e anenna radiaion &aern in !e final !o$sing in an a&&ro&riae ane#!oi# #!am'er is re*$ired.

Some #$somers do no !a"e !e sie a"aila'ili( o im&lemen a &a#! anenna a&&roa#!. In !a insan#e% $se of

a inear olaried >A anenna is !e ne 'es alernai"e. )!ere are new #erami# anennas on !e mar+e





!a e!i'i reasona'le gain #!ara#erisi#s on#e &ro&erl( mo$ned in !e !o$sing% and w!en ma#!ed o an

a&&ro&riae sied gro$nd. Eenerall( !e gro$nd &lane re*$iremens are smaller for a anenna w!en #om&ared

o a &a#!% '$ on#e again% &ro&er esing in an ane#!oi# #!am'er is a mandaor( re*$iremen. )!ese #erami#

elemens will need o 'e lo#aed near !e end of !e gro$nd &lane% and will re*$ire se"eral millimeers of

#learan#e 'eween !e #loses #om&onen. I is im&oran o noe !a $se of a anenna will res$l in a

minim$m of 4d of gain loss w!en #om&ared o a RHC anenna a a defined ele"aion. )!is is d$e o !e rig!

!and gain r$le of anenna &ro&agaion.

Bse of I anenna is ano!er &ossi'ili(% '$ !e I $s$all( e!i'is a #onsidera'le amo$n of gain n$lls%

or K!olesL in !e radiaion &aern. )!is will 'e $ndesira'le for o'aining a low #ir#$lar error &ro'a'ili( >C<A%

sin#e !e anenna ma( no allow !e re#ei"er o #a&$re !e desired saellie a !e ideal orienaion d$e o !ese

noed gain n$lls. n#e again% #aref$l esing in an a&&ro&riae ane#!oi# #!am'er is re*$ired.

If !e #$somer,s design is for a$omoi"e a&&li#aions% !en an a#i"e anenna #an 'e $sed and lo#aed on o& of

!e #ar in order for g$aranee !e 'es signal *$ali(. ES anenna #!oi#e s!o$ld 'e 'ased on !e designing

&rod$# and o!er #ondiions.

or deailed nenna designing #onsideraion% &lease refer o relaed anenna "endor,s design re#ommendaion.

)!e anenna "endor will offer f$r!er e#!ni#al s$&&or and $ne !eir anenna #!ara#erisi# o a#!ie"e s$##essf$l

ES re#e&ion &erforman#e de&ending on !e #$somer,s design.

& lectrical1 2elia3ility an 2aio Characteristics

6.1 /3solute Ma5imum 2atings

)!e a'sol$e maim$m raings saed in following a'le are sress raings $nder non-o&eraing #ondiions.

Sresses 'e(ond an( of !ese limis will #a$se &ermanen damage o SIM908.

Ta3le $0 6 /3solute ma5imum ratings

Sym3ol *arameter Min Typ Ma5 @nit

V) ower s$&&l( "olage - - 7.7 V

VIG In&$ "olage -0.4 - 4.1 V

IIG In&$ #$rren - - 10 m

IG $&$ #$rren - - 10 m

G)!ese &arameers are for digial inerfa#e &ins% s$#! as +e(&ad% EI% I 2C% BR)% CD% ;Ms and D<BE.

6.2 2ecommene (perating Conitions

Ta3le $" 6 2ecommene operating conitions






V) ower s$&&l( "olage 4.2 5.0 5.8 V

)<R &eraing em&era$re -50 ?27 ?87 ℃

)S)E Sorage em&era$re -57 ?90 ℃

6.3 Digital Inter,ace Characteristics

Ta3le $$ 6 Digital inter,ace characteristics


IIH Hig!-le"el in&$ #$rren -10 - 10 $

II ow-le"el in&$ #$rren -10 - 10 $

VIH Hig!-le"el in&$ "olage 2.5 - - V

VI ow-le"el in&$ "olage - - 0.5 V

VH Hig!-le"el o$&$ "olage 2. - - V

V ow-le"el o$&$ "olage - - 0.1 V

G )!ese &arameers are for digial inerfa#e &ins% s$#! as +e(&ad% EI% I2C% BR)% CD% ;Ms and D<BE.

6.4 SIM Car Inter,ace Characteristics

Ta3le $' 6 SIM car inter,ace characteristics


IIH Hig!-le"el in&$ #$rren -10 - 10 $

II ow-le"el in&$ #$rren -10 - 10 $

VIH Hig!-le"el in&$ "olage 1.5 - - V

2.5 - - V

VI ow-le"el in&$ "olage - - 0.5 V

2.5 V

VH Hig!-le"el o$&$ "olage 1. - - V

2. - - V

V ow-le"el o$&$ "olage - - 0.1 V

- - 0.1 V

6.5 VDD_=T Characteristics

Ta3le $. 6 VDD_=T characteristics






V $&$ "olage 2.0 2.80 2.97 V

I $&$ #$rren - - 10 m

6.6 SIM_VDD Characteristics

Ta3le $- 6 SIM_VDD characteristics


V $&$ "olage 2.7 2.9 4.00 V

1.67 1.80 1.97

I $&$ #$rren - - 10 m

6.7 V2TC Characteristics

Ta3le $& 6 V2TC characteristics


VR)C-I VR)C in&$ "olage 2.00 4.00 4.17 V

IR)C-I VR)C in&$ #$rren - 2 - $

VR)C-B) VR)C o$&$ "olage - 4.00 - V

IR)C-B) VR)C o$&$ #$rren - 10 - $

6.8 Current Consumption V;/T '#8V1 G*S engine is po!ere o!n:

Ta3le $4 6 GSM Current consumption

Sym3ol *arameter Conitions Value @nit

IVR)C VR)C #$rren V) dis#onne#s. a#+$& 'aer( is 4 V 2 $

IV) V) #$rren ower down mode 70 $

Slee& mode S--MRMS@9 1.2 m

S--MRMS@7 1.7

S--MRMS@2 1.

Idle mode ESM 870 21 m

<ESM 900

DCS 1800

CS 1900







6.10 2aio Characteristics

&#"0#" Moule 2 (utput *o!er

)!e following a'le s!ows !e mod$le #ond$#ed o$&$ &ower% i is followed '( !e 4E )S 07.07 e#!ni#al

s&e#ifi#aion re*$iremen.

Ta3le $9 6 SIM908 GSM 900 an GSM 8-0 conucte 2 output po!er

GSM 900 an GSM 8-0

*C< Nominal output po!er ;m: Tolerance ;: ,or conitions

Normal 5treme

0-2 49 2 2.7

4 4 4 5

5 47 4 5

7 44 4 5

6 41 4 5

29 4 5

8 2 4 5

9 27 4 5

10 24 4 5

11 21 4 512 19 4 5

14 1 4 5

15 17 4 5

17 14 4 5

16 11 7 6

1 9 7 6

18 7 6

19-41 7 7 6

Ta3le '0 6 SIM908 DCS "800 an *CS "900 conucte 2 output po!er

DCS "800 an *CS "900

*C< Nominal output po!er ;m: Tolerance ;: ,or conitions

Normal 5treme

29 46 2 2.7

40 45 4 5

41 42 4 5

0 40 4 5

1 28 4 5

2 26 4 5





4 25 4 5

5 22 4 5

7 20 4 5

6 18 4 5

16 4 5

8 15 4 5

9 12 5 7

10 10 5 7

11 8 5 7

12 6 5 7

14 5 5 7

15 2 7 6

17-28 0 7 6

or !e mod$le,s o$&$ &ower% !e following is s!o$ld 'e noedJ

ESM900 and ESM870 'and% !e mod$le is a #lass 5 de"i#e% so !e mod$le,s o$&$ &ower s!o$ld no e#eed

44dm% and a !e maim$m &ower le"el% !e o$&$ &ower oleran#e s!o$ld no e#eed ?:-2d $nder normal

#ondiion and ?:-2.7d $nder ereme #ondiion.

DCS1800 and CS1900 'and% !e mod$le is a #lass 1 de"i#e% so !e mod$le,s o$&$ &ower s!o$ld no e#eed

40dm% and a !e maim$m &ower le"el% !e o$&$ &ower oleran#e s!o$ld no e#eed ?:-2d $nder normal

#ondiion and ?:-2.7d $nder ereme #ondiion.

&#"0#$ Moule 2 2ecei)e Sensiti)ity

)!e following a'le s!ows !e mod$le,s #ond$#ed re#ei"e sensii"i(% i is esed $nder sai# #ondiion.

Ta3le '" 6 SIM908 conucte 2 recei)e sensiti)ity

re?uency 2ecei)e

sensiti)ity

Typical

2ecei)e sensiti)ityMa5:

ESM870 -109dm -10dm

<ESM900 -109dm -10dm

DCS1800 -109dm -10dm

CS1900 -109dm -10dm

&#"0#' Moule (perating re?uencies

)!e following a'le s!ows !e mod$le,s o&eraing fre*$en#( rangeN i is followed '( !e 4E )S 07.07

e#!ni#al s&e#ifi#aion re*$iremen.





Ta3le '$ 6 SIM908 operating ,re?uencies

re?uency 2ecei)e Transmit

ESM870 869 895MH 825 859 MH

<ESM900 927 960MH 880 917MH

DCS1800 1807 1880MH 110 187MH

CS1900 1940 1990MH 1870 1910MH

4 Manu,acturing

7.1 Top Vie! o, SIM908

igure .0 6 Top )ie! o, SIM908





4#$ Typical Soler 2e,lo! *ro,ile

igure ." 6 Typical Soler 2e,lo! *ro,ile

or deails a'o$ se#ondar( SM)% &lease refer o document [10].

4#' Moisture Sensiti)ity <e)el MS<:

SIM908 is *$alified o MS4 in a##ordan#e wi! IC:U<D<C U-S)D-044.







lang$age-s&e#ifi# informaion

Y18Z ESM 11.10 Digial #ell$lar ele#omm$ni#aions s(sem >!ase 2A； Mo'ile Saion

>MSA #onforman#e s&e#ifi#aion ； ar 1J Conforman#e s&e#ifi#aion

;# Terms an /33re)iations

Ta3le '. 6 Terms an /33re)iations

/33re)iation Description

DC nalog-o-Digial Con"erer

MR da&i"e M$li-Rae

CS Coding S#!eme

CSD Cir#$i Swi#!ed Daa

C)S Clear o Send

D)< Daa )erminal <*$i&men >(&i#all( #om&$er% erminal% &rinerA

D)R Daa )erminal Read(

D)F Dis#onin$o$s )ransmission

<R <n!an#ed $ll Rae

<ESM <n!an#ed ESM

<SD <le#rosai# Dis#!arge

<)S <$ro&ean )ele#omm$ni#aion Sandard

R $ll Rae

ERS Eeneral a#+e Radio Ser"i#eESM Elo'al Sandard for Mo'ile Comm$ni#aions

HR Half Rae

IM<I Inernaional Mo'ile <*$i&men Ideni(

i-ion i!i$m-Ion

M Mo'ile riginaed

MS Mo'ile Saion >ESM engineA% also referred o as )<

M) Mo'ile )erminaed

assword $!eni#aion roo#ol

CCH a#+e road#as Conrol C!annel

C rined Cir#$i oard

C ower Conrol e"el

CS ersonal Comm$ni#aion S(sem% also referred o as ESM 1900

DB roo#ol Daa Bni

oin-o-&oin &roo#ol

R Radio re*$en#(

RMS Roo Mean S*$are >"al$eA

R)C Real )ime Clo#+

RF Re#ei"e Dire#ion

SIM S$'s#ri'er Idenifi#aion Mod$le





SMS S!or Message Ser"i#e

)< )erminal <*$i&men% also referred o as D)<

)F )ransmi Dire#ion

BR) Bni"ersal s(n#!rono$s Re#ei"er [ )ransmier

BRC Bnsoli#ied Res$l Code

BSSD Bnsr$#$red S$&&lemenar( Ser"i#e Daa

*hone3oo+ a33re)iations

D SIM fi dialing &!one'oo+

D SIM las dialing &!one'oo+ >lis of n$m'ers mos re#enl( dialedA

MC Mo'ile <*$i&men lis of $nanswered M) #alls >missed #allsA

SIM >or M<A own n$m'ers >MSISDsA lis

RC Mo'ile <*$i&men lis of re#ei"ed #alls

SM SIM &!one'oo+

C o #onne#

C# Sa,ety Caution

Ta3le '- 6 Sa,ety caution

Mar+s 2e?uirements

;!en in a !os&ial or o!er !eal! #are fa#ili(% o'ser"e !e resri#ions a'o$ !e $se of mo'iles.

Swi#! !e #ell$lar erminal or mo'ile off% medi#al e*$i&men ma( 'e sensii"e o no o&erae

normall( for R energ( inerferen#e.

Swi#! off !e #ell$lar erminal or mo'ile 'efore 'oarding an air#raf. Ma+e s$re i is swi#!ed off.

)!e o&eraion of wireless a&&lian#es in an air#raf is for'idden o &re"en inerferen#e wi!

#omm$ni#aion s(sems. orge o !in+ m$#! of !ese insr$#ions ma( lead o !e flig! safe( or

offend agains lo#al legal a#ion% or 'o!.

Do no o&erae !e #ell$lar erminal or mo'ile in !e &resen#e of flamma'le gases or f$mes. Swi#!

off !e #ell$lar erminal w!en (o$ are near &erol saions% f$el de&os% #!emi#al &lans or w!ere

'lasing o&eraions are in &rogress. &eraion of an( ele#ri#al e*$i&men in &oeniall( e&losi"e

amos&!eres #an #onsi$e a safe( !aard.

=o$r #ell$lar erminal or mo'ile re#ei"es and ransmis radio fre*$en#( energ( w!ile swi#!ed on.

R inerferen#e #an o##$r if i is $sed #lose o )V ses% radios% #om&$ers or o!er ele#ri#

e*$i&men.

Road safe( #omes firs] Do no $se a !and-!eld #ell$lar erminal or mo'ile w!en dri"ing a

"e!i#le% $nless i is se#$rel( mo$ned in a !older for !ands free o&eraion. efore ma+ing a #all

wi! a !and-!eld erminal or mo'ile% &ar+ !e "e!i#le.

ESM #ell$lar erminals or mo'iles o&erae o"er radio fre*$en#( signals and #ell$lar newor+s and

#anno 'e g$araneed o #onne# in all #ondiions% for eam&le no mo'ile fee or a in"alid SIM #ard.

;!ile (o$ are in !is #ondiion and need emergen !el&% &lease remem'er $sing emergen#( #alls.

In order o ma+e or re#ei"e #alls% !e #ell$lar erminal or mo'ile m$s 'e swi#!ed on and in a

ser"i#e area wi! ade*$ae #ell$lar signal sreng!.

Some newor+s do no allow for emergen#( #all if #erain newor+ ser"i#es or &!one fea$res are in

$se >e.g. lo#+ f$n#ions% fied dialing e#.A. =o$ ma( !a"e o dea#i"ae !ose fea$res 'efore (o$




Documents

SIMCom SIM908 Hardware Design 1.00