Sierra Wireless AIRPRIME WISMO218 User manual

WA_DEV_W218_PTS_002
005
December 17, 2009
WISMO218 WIreless Standard MOdem
Product Technical Specification &
Customer Design Guidelines

WA_DEV_W218_PTS_002 Rev 005 Page 2 of 109
Product Technical Specification &
Customer Design Guidelines
Important Notice
Due to the nature of wireless communications, transmission and reception of data can never be
guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the Sierra Wireless modem are used in
a normal manner with a well-constructed network, the Sierra Wireless modem should not be used in
situations where failure to transmit or receive data could result in damage of any kind to the user or
any other party, including but not limited to personal injury, death, or loss of property. Sierra
Wireless accepts no responsibility for damages of any kind resulting from delays or errors in data
transmitted or received using the Sierra Wireless modem, or for failure of the Sierra Wireless modem
to transmit or receive such data.
Safety and Hazards
Do not operate the Sierra Wireless modem in areas where blasting is in progress, where explosive
atmospheres may be present, near medical equipment, near life support equipment, or any
equipment which may be susceptible to any form of radio interference. In such areas, the Sierra
Wireless modem MUST BE POWERED OFF. The Sierra Wireless modem can transmit signals that
could interfere with this equipment. Do not operate the Sierra Wireless modem in any aircraft,
whether the aircraft is on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE
POWERED OFF. When operating, the Sierra Wireless modem can transmit signals that could
interfere with various onboard systems.
Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door is
open. Sierra Wireless modems may be used at this time.
The driver or operator of any vehicle should not operate the Sierra Wireless modem while in control
of a vehicle. Doing so will detract from the driver or operator’s control and operation of that vehicle.
In some states and provinces, operating such communications devices while in control of a vehicle is
an offence.

WA_DEV_W218_PTS_002 Rev 005 Page 3 of 109
Product Technical Specification &
Customer Design Guidelines
Limitations of Liability
This manual is provided “as is”. Sierra Wireless makes no warranties of any kind, either expressed or
implied, including any implied warranties of merchantability, fitness for a particular purpose, or
noninfringement. The recipient of the manual shall endorse all risks arising from its use.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL,
GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES
INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED
PROFITS OR REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA
WIRELESS PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR
CLAIMS BY ANY THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates aggregate
liability arising under or in connection with the Sierra Wireless product, regardless of the number of
events, occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser
for the Sierra Wireless product.
Copyright
© 2009 Sierra Wireless. All rights reserved.
Trademarks
AirCard®and “Heart of the Wireless Machine®” are filed or registered trademarks of Sierra Wireless.
Watcher®is a trademark of Sierra Wireless, registered in the European Community. Sierra Wireless,
the Sierra Wireless logo, the red wave design, and the red-tipped antenna are trademarks of Sierra
Wireless.
, , ®, inSIM®, “YOU MAKE IT, WE MAKE IT WIRELESS®”,
WAVECOM®, WISMO®, Wireless Microprocessor®, Wireless CPU®, Open AT®are filed or registered
trademarks of Sierra Wireless S.A. in France and/or in other countries.
Windows®is a registered trademark of Microsoft Corporation.
QUALCOMM®is a registered trademark of QUALCOMM Incorporated. Used under license.
Other trademarks are the property of the respective owners.

WA_DEV_W218_PTS_002 Rev 005 Page 4 of 109
Product Technical Specification &
Customer Design Guidelines
Contact Information
Sales Desk:
Phone:
1-604-232-1488
Hours:
8:00 AM to 5:00 PM Pacific Time
E-mail:
[e-mail]
Post:
Sierra Wireless
13811 Wireless Way
Richmond, BC
Canada V6V 3A4
Fax:
1-604-231-1109
Web:
www.sierrawireless.com
Consult our website for up-to-date product descriptions, documentation, application notes, firmware
upgrades, troubleshooting tips, and press releases:
www.sierrawireless.com
Document Update History
Rev
Date
List of Updates
001
April 22, 2009
Creation
002
April 28, 2009
Addition of Power Consumption table and software note in section 3.3.2
003
July 17, 2009
Document Cover/Footer: Updated the file name (from
WA_DEV_W218_PTS_002-002 to WA_DEV_W218_PTS_002-003), the
revision number and the revision date.
Throughout the document: adjusted figure size to better display components
and their corresponding values.
§ 1.1.1: Updated the 4th reference document name to Customer Process
Guideline for WISMO Series.
§ 3.5: Changed the section title to “SPI Bus for Debug Trace ONLY”.
§ 3.5.1:
Changed the SPI-CLK Pin number from 16 to 15
Added an additional sentence at the end of the paragraph text
§ 3.5.1.1: Changed the value of X101 from 3.6884MHz to 3,6864MHz.
§ 3.11.2: Changed the PWM1 Pin number from 27 to 35.
§ 3.12.3: Updated the section description.
§ 5.2.2: Changed the Recommended connection when not used column for
Pin 18, TX_CTRL from “2.8V TX Burst Indicator” to “not connected”.
§ 5.4: Updated the description for Class B condition.
§ 5.5.2:
Updated the section description
Deleted Figure 40: Recommended PCB landing pattern for WISMO218

WA_DEV_W218_PTS_002 Rev 005 Page 5 of 109
Product Technical Specification &
Customer Design Guidelines
Rev
Date
List of Updates
§ 5.5.3: Added this section.
Made grammatical and other punctuation corrections throughout the
document.
Updated links and references.
§ 3.8: Changed the number of General Purpose I/Os from 11 to 3.
§ 3.9.2 Added a Caution box after the table.
§ 3.10.4.1.1 and 3.104.1.2: Removed the GND within the WISMO218 in the
figures (figures 15, 16, 17 and 18)
§ 3.10.5.5: Added additional information in the Caution box regarding the ESD
sensitivity of the audio interface.
§ 5.2.2: Changed the recommended connection when not in use value from
“open” to “Ground” for pin #5, AUX-ADC0.
§ 3.10.5.5:
Separated the audio track figure and the differential connection figure
Labeled the differential connection figure as Figure 21
Added Figure 22: single-ended audio connection
§ 5.4: Updated the Class B temperature range from -30 to +75 to -40 to +85.
§ 5.5.3: Updated the figure to display it rotated 90 degrees counterclockwise.
Updated text wording, checked for spelling and grammar, updated links and
captions throughout the document.
§ 3.2.2: Updated the value of VBATT’s Ripple max.
§ 3.10.1.1: Updated table values.
§ 3.10.2.1.1: Updated table values.
§ 3.10.4.1.1: Deleted the description for Z2.
§ 3.13.3.1: Changed “de-assert” to “release” (re: recommendation for the
ON/~OFF signal)
§ 3.14: Updated reference to section 3.13.3.1.
§ 4.1.4: Updated Caution text.
§ 3.10.1: Updated the DC equivalent circuit.
§ 3.10.1.1: Updated the table values and notes section.
§ 3.10.4.1.1 and 3.10.4.1.2: Updated figures from 2.85V to 2.4V
§ 3.13.3.1: Updated figure and included the Tready table just beneath the
figure.
§ 3.17.3: Updated figure and updated descriptive text below the figure.
§ 3.13.3.1: Updated the figure to include ramp up time of VBAT.
August 12, 2009
Updated the Pin Description table (Table 7) of the Main Serial Link (UART)
subsection of section 3: Interfaces.
Added List of Figures and List of Tables.
September 10, 2009
Updated Figure 31.
Added Trampup values in the Power on sequence table.
Added Figure 46.
Moved Recommended PCB Landing Pattern after Figure 47.

WA_DEV_W218_PTS_002 Rev 005 Page 6 of 109
Product Technical Specification &
Customer Design Guidelines
Rev
Date
List of Updates
004
October 27, 2009
Updated Class A Operating Temperature Range
Updated documentation reference
005
November 23, 2009
ON/~OFF Signal:
Added an extra note about controlling the signal via an open
collector switching transistor
Updated Figure 30 to include a figure showing the signal connection
via an open collector transistor
Set the low level pulse length to 5.5sec
Updated Figure 32 to include the 5.5s low level pulse length
TX_CTRL Signal for TX Burst Indication:
Added TX_CTRL frequency and duration
Updated Figure 36 to include Tduration
Updated Figure 37 (added the transistor, T601)

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Contents
CONTENTS.......................................................................................................................7
LIST OF FIGURES .........................................................................................................12
LIST OF TABLES...........................................................................................................14
1. REFERENCES............................................................................................................16
Reference Documents ...................................................................................................................... 16
Sierra Wireless Reference Documentation................................................................................ 16
List of Abbreviations......................................................................................................................... 16
2. GENERAL DESCRIPTION......................................................................................20
General Information.......................................................................................................................... 20
Overall Dimensions...................................................................................................................... 20
Environment and Mechanics....................................................................................................... 20
GSM/GPRS Features.................................................................................................................... 20
Interfaces....................................................................................................................................... 20
Firmware ....................................................................................................................................... 21
Connection Interfaces.................................................................................................................. 21
Functional Description ..................................................................................................................... 22
RF Functionalities......................................................................................................................... 22
Baseband Functionalities............................................................................................................ 23
3. INTERFACES ............................................................................................................24
General Interfaces ............................................................................................................................. 24
Power Supply..................................................................................................................................... 25
Power Supply Description........................................................................................................... 25
Electrical Characteristics............................................................................................................. 26
Pin Description............................................................................................................................. 26
Application.................................................................................................................................... 26
Recommended Components............................................................................................................. 27
Power Consumption ......................................................................................................................... 28
Various Operating Modes............................................................................................................ 28
Power Consumption..................................................................................................................... 29
Consumption Waveform Samples .............................................................................................. 30
Connected Mode Current Waveform................................................................................................. 31
Transfer Mode Class 10 Current Waveform...................................................................................... 31
Idle Mode Page 2 Current Waveform ................................................................................................ 32
Idle Mode Page 9 Current Waveform ................................................................................................ 32
Recommendations for Less Consumption................................................................................. 33
Electrical Information for Digital I/O ............................................................................................. 34

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SPI Bus for Debug Trace ONLY ..................................................................................................... 35
Pin Description............................................................................................................................. 35
SPI Waveforms ................................................................................................................................... 35
Main Serial Link (UART) ................................................................................................................. 38
Features......................................................................................................................................... 38
Pin Description............................................................................................................................. 38
5-wire serial interface hardware design:........................................................................................... 39
4-wire serial interface hardware design:........................................................................................... 39
2-wire serial interface hardware design:........................................................................................... 39
Application.................................................................................................................................... 40
V24/CMOS possible design ............................................................................................................... 41
SIM Interface...................................................................................................................................... 44
Features......................................................................................................................................... 44
Pin Description............................................................................................................................. 45
Application.................................................................................................................................... 46
SIM socket connection....................................................................................................................... 46
General Purpose Input/Output ....................................................................................................... 47
Pin Description............................................................................................................................. 47
Analog to Digital Converter............................................................................................................. 48
Features......................................................................................................................................... 48
Pin Description............................................................................................................................. 48
Analog Audio Interface .................................................................................................................... 49
Microphone Features ................................................................................................................... 49
Electrical Characteristics ................................................................................................................... 49
Speaker Features.......................................................................................................................... 50
Speakers Outputs Power ................................................................................................................... 50
Pin Description............................................................................................................................. 51
Application.................................................................................................................................... 52
Microphone ......................................................................................................................................... 52
Recommended Components............................................................................................................. 53
Recommended Components............................................................................................................. 55
Speaker SPKP and SPKN.................................................................................................................. 56
Design Recommendation ............................................................................................................ 56
General ................................................................................................................................................ 56
Recommended Microphone Characteristics.................................................................................... 57
Recommended Speaker Characteristics .......................................................................................... 57
Recommended Filtering Components .............................................................................................. 57
Audio Track and PCB Layout Recommendation ............................................................................. 59
Pulse-Width Modulators (PWMs)................................................................................................... 62
Features......................................................................................................................................... 62
Pin Description............................................................................................................................. 62
Application.................................................................................................................................... 62
BUZZER Output................................................................................................................................. 64
Features......................................................................................................................................... 64
Pin Description............................................................................................................................. 64
Application.................................................................................................................................... 65
Calculations of the Low Filter: ........................................................................................................... 66

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Customer Design Guidelines
Recommended characteristics for the buzzer.................................................................................. 66
ON/~OFF Signal ............................................................................................................................... 67
Features......................................................................................................................................... 67
Pin Description............................................................................................................................. 67
Application.................................................................................................................................... 68
Power ON ............................................................................................................................................ 68
Power OFF........................................................................................................................................... 69
WISMO_READY Indication ............................................................................................................. 71
Features......................................................................................................................................... 71
Pin Description............................................................................................................................. 71
VCC_2V8 output................................................................................................................................. 72
Features......................................................................................................................................... 72
Pin Description............................................................................................................................. 72
Application.................................................................................................................................... 72
BAT-RTC (Backup Battery) ............................................................................................................ 73
Features......................................................................................................................................... 73
Pin Description............................................................................................................................. 73
Application.................................................................................................................................... 73
Super Capacitor.................................................................................................................................. 74
Non-Rechargeable Battery................................................................................................................. 74
Rechargeable Battery Cell ................................................................................................................. 75
TX_CTRL Signal for TX Burst Indication..................................................................................... 76
Features......................................................................................................................................... 76
Pin Description............................................................................................................................. 77
Application.................................................................................................................................... 77
Reset.................................................................................................................................................... 78
Feature........................................................................................................................................... 78
Sequence after an external reset event (~RESET) .......................................................................... 78
Pin Description............................................................................................................................. 78
Application.................................................................................................................................... 79
RF Interface ........................................................................................................................................ 80
RF Connection .............................................................................................................................. 80
RF Performances.......................................................................................................................... 80
Antenna Specifications................................................................................................................ 80
4. CONSUMPTION MEASUREMENT PROCEDURE............................................83
Hardware Configuration .................................................................................................................. 83
Equipment..................................................................................................................................... 83
WISMO218 Development Kit....................................................................................................... 85
Socket-Up Board Used................................................................................................................. 86
SIM Cards Used............................................................................................................................ 86
Software Configurations.................................................................................................................. 87
WISMO218 Configuration............................................................................................................ 87

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Equipment Configuration ............................................................................................................ 88
Template............................................................................................................................................. 89
5. TECHNICAL SPECIFICATIONS...........................................................................90
Castellation Connector Pin Configuration ................................................................................... 90
Castellation Pin ................................................................................................................................. 91
Pin-Out Description...................................................................................................................... 91
Recommended Connection When Not Used............................................................................. 93
PCB Specification for Application Board..................................................................................... 94
Environmental Specifications......................................................................................................... 95
Function Status Classification .................................................................................................... 95
Class A................................................................................................................................................. 95
Class B................................................................................................................................................. 95
Mechanical Specifications............................................................................................................... 97
Physical Characteristics .............................................................................................................. 97
WISMO218 Dimensions............................................................................................................... 98
Recommended PCB Landing Pattern ...................................................................................... 100
6. PERIPHERAL DEVICES REFERENCES ............................................................101
General Purpose Connector .......................................................................................................... 101
SIM Card Reader ............................................................................................................................. 101
Microphone....................................................................................................................................... 101
Speaker ............................................................................................................................................. 101
Antenna Cable.................................................................................................................................. 101
GSM Antenna ................................................................................................................................... 102
7. NOISES AND DESIGN..........................................................................................103
EMC Recommendations................................................................................................................. 103
Power Supply................................................................................................................................... 103
8. APPENDIX...............................................................................................................104
Standards and Recommendations............................................................................................... 104
Safety Recommendations (for Information Only) .................................................................... 107
RF Safety ..................................................................................................................................... 107
General .............................................................................................................................................. 107
Exposure to RF Energy ..................................................................................................................... 107
Efficient Terminal Operation............................................................................................................ 107
Antenna Care and Replacement ..................................................................................................... 107
General Safety............................................................................................................................. 108
Driving ............................................................................................................................................... 108
Electronic Devices ............................................................................................................................ 108
Vehicle Electronic Equipment.......................................................................................................... 108
Medical Electronic Equipment......................................................................................................... 108
Aircraft............................................................................................................................................... 108
Children............................................................................................................................................. 109

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Product Technical Specification &
Customer Design Guidelines
Blasting Areas................................................................................................................................... 109
Potentially Explosive Atmospheres................................................................................................. 109

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List of Figures
Figure 1. Functional Architecture .......................................................................................................22
Figure 2. Power Supply During Burst Emission................................................................................25
Figure 3. Reject Filter Diagram ...........................................................................................................26
Figure 4. SPI Timing Diagrams...........................................................................................................35
Figure 5. Example of an SPI to UART2 Interface Conversion Implementation ..............................36
Figure 6. Example of RS-232 Level Shifter Implementation for UART2 ..........................................37
Figure 7. Example of RS-232 Level Shifter Implementation for UART ............................................40
Figure 8. Example of V24/CMOS Serial Link Implementation for 2-wire UART .............................41
Figure 9. Example of V24/CMOS Serial Link Implementation for 4-wire UART .............................41
Figure 10. Example of V24/CMOS Serial Link Implementation for 5-wire UART .............................42
Figure 11. Example of Full Modem V24/CMOS Serial Link Implementation for full-UART.............42
Figure 12. Example of SIM Socket Implementation............................................................................46
Figure 13. DC and AC Equivalent Circuits of MIC...............................................................................49
Figure 14. Equivalent Circuit for SPK...................................................................................................51
Figure 15. Example of MIC Input Differential Connection with LC Filter..........................................52
Figure 16. Example of MIC Input Differential Connection without LC Filter ....................................53
Figure 17. Example of MIC Input Single-Ended connection with LC Filter.......................................54
Figure 18. Example of MIC Input Single-Ended Connection without LC Filter.................................55
Figure 19. Example of Speaker Differential Connection.....................................................................56
Figure 20. Example of Speaker Single-Ended Connection.................................................................56
Figure 21. Microphone...........................................................................................................................57
Figure 22. Audio Track Design..............................................................................................................60
Figure 23. Differential Audio Connection.............................................................................................60
Figure 24. Single-Ended Audio Connection.........................................................................................61
Figure 25. Relative Timing for the PWM Output .................................................................................62
Figure 26. Example of a LED Driven by the PWM0 or PWM1 Output................................................63
Figure 27. BUZZER Output....................................................................................................................64
Figure 28. Example of Buzzer Implementation....................................................................................65
Figure 29. Example of LED Driven by the BUZZER Output ................................................................66
Figure 30. Example of the ON/~OFF Pin Connection Either By a Switch or Via an Open Collector
Transistor 68
Figure 31. Power-ON Sequence (no PIN code activated)...................................................................68
Figure 32. Power-OFF Sequence...........................................................................................................70

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Figure 33. RTC Supplied by a Gold Capacitor .....................................................................................74
Figure 34. RTC Supplied by a Non Rechargeable Battery..................................................................74
Figure 35. RTC Supplied by a Rechargeable Battery Cell..................................................................75
Figure 36. TX_CTRL State During TX Burst.........................................................................................76
Figure 37. Example of TX Status Implementation...............................................................................77
Figure 38. Reset Timing.........................................................................................................................78
Figure 39. Example of ~RESET Pin Connection with Push Button Configuration..........................79
Figure 40. Example of ~RESET Pin Connection with Transistor Configuration ..............................79
Figure 41. Example of an RF 50line...................................................................................................81
Figure 42. Typical hardware configuration ..........................................................................................84
Figure 43. WISMO218 Pin Configuration.............................................................................................90
Figure 44. PCB Structure Example for the Application Board...........................................................94
Figure 45. Environmental classes .........................................................................................................96
Figure 46. Castellation Pin Dimension and Location .........................................................................98
Figure 47. WISMO218 Dimensions.......................................................................................................99

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List of Tables
Table 1. Input Power Supply Voltage................................................................................................26
Table 2. Power Supply Pin Descriptions ..........................................................................................26
Table 3. WISMO218 Operating Modes..............................................................................................28
Table 4. Consumption/Software Driver Recommendations...........................................................33
Table 5. Electrical Characteristics of Digital I/O..............................................................................34
Table 6. SPI Bus Pin Descriptions ....................................................................................................35
Table 7. Main Serial Link Pin Descriptions ......................................................................................38
Table 8. Recommended Components...............................................................................................40
Table 9. Electrical Characteristics of SIM Interface ........................................................................45
Table 10. SIM Interface Pin Description.............................................................................................45
Table 11. Recommended Components...............................................................................................46
Table 12. Pin Description of the SIM Socket .....................................................................................46
Table 13. GPIO Pin Descriptions.........................................................................................................47
Table 14. Electrical Characteristics of ADC .......................................................................................48
Table 15. Analog to Digital Converter Pin Description .....................................................................48
Table 16. Electrical Characteristics of MIC ........................................................................................49
Table 17. Speaker Details ....................................................................................................................50
Table 18. Electrical Characteristics of SPK........................................................................................51
Table 19. Analog Audio Interface Pin Descriptions...........................................................................51
Table 20. Murata Examples..................................................................................................................59
Table 21. PWM Electrical Characteristics ..........................................................................................62
Table 22. PWM Pin Descriptions.........................................................................................................62
Table 23. BUZZER Electrical Characteristics .....................................................................................64
Table 24. BUZZER Pin Descriptions ...................................................................................................64
Table 25. Electrical Characteristics of the ON/~OFF Signal............................................................67
Table 26. ON/~OFF Signal Pin Descriptions.....................................................................................67
Table 27. Electrical Characteristics of the Signal ..............................................................................71
Table 28. WISMO_READY Indication Pin Descriptions ....................................................................71
Table 29. Electrical Characteristics of the Signals ............................................................................72
Table 30. VCC_2V8 Pin Descriptions ..................................................................................................72
Table 31. Electrical Characteristics of the Signal ..............................................................................73
Table 32. BAT-RTC Pin Descriptions ..................................................................................................73
Table 33. TX_CTRL Status....................................................................................................................76

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Customer Design Guidelines
Table 34. Electrical Characteristics of the Signal ..............................................................................76
Table 35. TX_CTRL Signal Pin Descriptions ......................................................................................77
Table 36. Electrical Characteristics of the Signals ............................................................................78
Table 37. Reset Pin Descriptions ........................................................................................................78
Table 38. Reset Commands.................................................................................................................79
Table 39. Antenna Specifications........................................................................................................81
Table 40. Equipment Reference List ...................................................................................................85
Table 41. Operating Mode Information...............................................................................................88
Table 42. WISMO218 Power Consumption ........................................................................................89

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Product Technical Specification &
Customer Design Guidelines
1. References
Reference Documents
Several documents are referenced throughout this specification. For more details, please consult the
listed reference documents. The Sierra Wireless documents referenced herein are provided in the
Sierra Wireless documentation package; however, the general reference documents which are not
Sierra Wireless owned are not provided in the documentation package.
Sierra Wireless Reference Documentation
[1] WISMO218 Hardware Presentation
Reference: WA_DEV_W218_PTS_001
[2] WISMO218 AT Commands Manual
Reference: WA_DEV_W218_UGD_003
[3] WISMO218 Development Kit User Guide
Reference: WA_DEV_W218_UGD_004
[4] Customer Process Guideline for WISMO Series
Reference: WA_DEV_WISMO_PTS_001
List of Abbreviations
Abbreviation
Definition
AC
Alternative Current
ADC
Analog to Digital Converter
A/D
Analog to Digital conversion
AF
Audio-Frequency
AGC
Automatic Gain Control
AT
ATtention (prefix for modem commands)
AUX
AUXiliary
CAN
Controller Area Network
CB
Cell Broadcast
CBS
Cell Broadcast Service
CE
-
CEP
Circular Error Probable
CLK
CLocK
CMOS
Complementary Metal Oxide Semiconductor

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Abbreviation
Definition
CODEC
COder DECoder
CPU
Central Processing Unit
CS
Coding Scheme
CSD
Circuit Switched Data
CTS
Clear To Send
DAC
Digital to Analog Converter
DAI
Digital Audio Interface
dB
Decibel
DC
Direct Current
DCD
Data Carrier Detect
DCE
Data Communication Equipment
DCS
Digital Cellular System
DR
Dynamic Range
DSR
Data Set Ready
DTE
Data Terminal Equipment
DTR
Data Terminal Ready
EFR
Enhanced Full Rate
E-GSM
Extended GSM
EMC
ElectroMagnetic Compatibility
EMI
ElectroMagnetic Interference
EMS
Enhanced Message Service
EN
ENable
ESD
ElectroStatic Discharges
ETSI
European Telecommunications Standards Institute
FIFO
First In First Out
FR
Full Rate
FTA
Full Type Approval
GND
GrouND
GPI
General Purpose Input
GPC
General Purpose Connector
GPIO
General Purpose Input Output
GPO
General Purpose Output
GPRS
General Packet Radio Service
GPS
Global Positioning System
GPSI
General Purpose Serial Interface
GSM
Global System for Mobile communications
HR
Half Rate
Hi Z
High impedance (Z)
IC
Integrated Circuit
IDE
Integrated Development Environment

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Customer Design Guidelines
Abbreviation
Definition
IF
Intermediate Frequency
IMEI
International Mobile Equipment Identification
I/O
Input / Output
LCD
Liquid Crystal Display
LED
Light Emitting Diode
LNA
Low Noise Amplifier
LSB
Less Significant Bit
MAX
MAXimum
MIC
MICrophone
MIN
MINimum
MMS
Multimedia Message Service
MO
Mobile Originated
MS
Mobile Station
MT
Mobile Terminated
na
Not Applicable
NF
Noise Factor
NMEA
National Marine Electronics Association
NOM
NOMinal
NTC
Negative Temperature Coefficient
PA
Power Amplifier
Pa
Pascal (for speaker sound pressure measurements)
PBCCH
Packet Broadcast Control CHannel
PC
Personal Computer
PCB
Printed Circuit Board
PCL
Power Control Level
PCM
Pulse Code Modulation
PDA
Personal Digital Assistant
PFM
Power Frequency Modulation
PLL
Phase Lock Loop
PSM
Phase Shift Modulation
PWM
Pulse Width Modulation
RAM
Random Access Memory
RF
Radio Frequency
RFI
Radio Frequency Interference
RHCP
Right Hand Circular Polarization
RI
Ring Indicator
RMS
Root Mean Square
RST
ReSeT
RTC
Real Time Clock
RTCM
Radio Technical Commission for Maritime services

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Customer Design Guidelines
Abbreviation
Definition
RTS
Request To Send
RX
Receive
SCL
Serial CLock
SDA
Serial DAta
SIM
Subscriber Identification Module
SMD
Surface Mounted Device/Design
SMS
Short Message Service
SPI
Serial Peripheral Interface
SPL
Sound Pressure Level
SPK
SPeaKer
SW
SoftWare
PSRAM
Pseudo Static RAM
TBC
To Be Confirmed
TDMA
Time Division Multiple Access
TP
Test Point
TU
Typical Urban fading profile
TUHigh
Typical Urban, High speed fading profile
TVS
Transient Voltage Suppressor
TX
Transmit
TYP
TYPical
UART
Universal Asynchronous Receiver-Transmitter
UBX
µ-blox proprietary protocol (NE DOIT PAS APPARAITRE)
USB
Universal Serial Bus
USSD
Unstructured Supplementary Services Data
VSWR
Voltage Standing Wave Ratio
WAP
Wireless Application Protocol

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Product Technical Specification &
Customer Design Guidelines
2. General Description
General Information
The WISMO218 WIreless Standard MOdem is a self-contained EGSM/GPRS 900/1800 dual-band
module that was specifically designed for M2M systems deployed in Europe and Asia.
Overall Dimensions
Length: 25.0 mm
Width: 25.0 mm
Thickness: 2.8 mm (excluding label thickness)
Weight: 3.8 g
Environment and Mechanics
Green policy: Restriction of Hazardous Substances in Electrical and Electronic Equipment
(RoHS) compliant
Complete shielding
The WISMO218 is compliant with RoHS Directive 2002/95/EC which sets limits for the use of certain
restricted hazardous substances. This directive states that “from 1st July 2006, new electrical and
electronic equipment put on the market does not contain lead, mercury, cadmium, hexavalent
chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE)”.
GSM/GPRS Features
2 Watts EGSM 900 radio section running under 3.6 Volts
1 Watt GSM1800 radio section running under 3.6 Volts
Hardware GPRS class 10 capable
Interfaces
VBAT power supply
Digital section running under 2.8 Volts
3V/1V8 SIM interface
Power supplies
Serial link (UART)
Analog audio
ADC