Sierra Wireless Q24PL003 Wireless CPU User Manual Wireless CPU Q24 Series
Sierra Wireless, Inc. Wireless CPU Wireless CPU Q24 Series
Users Manual
WM_
Wireless CPU Q24 Series
Product Technical Specification
Revision: 003
Date: November 2006
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November 2006
Wireless CPU Q24 Series
Product Technical Specification
Reference:
WM_PRJ_Q24NG_PTS_001
Revision:
003
Date:
November 2006
Powered by the Open AT® Software Suite
Wireless CPU Q24 Series
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Cautions
This platform contains a modular transmitter. This device is used for wireless
applications. Note that all electronics parts and elements are ESD sensitive.
Information provided herein by WAVECOM is accurate and reliable. However, no
responsibility is assumed for its use and any of such WAVECOM information is herein
provided "as is" without any warranty of any kind, whether express or implied.
Trademarks
®, WAVECOM®, WISMO®, Open AT® and certain other trademarks and logos
appearing on this document, are filed or registered trademarks of Wavecom S.A. in
France or in other countries. All other company and/or product names mentioned may
be filed or registered trademarks of their respective owners.
Copyright
This manual is copyrighted by WAVECOM with all rights reserved. No part of this
manual may be reproduced in any form without the prior written permission of
WAVECOM. No patent liability is assumed with respect to the use of their respective
owners.
Wireless CPU Q24 Series
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Web Site Support
General information about Wavecom and its range of products: www.wavecom.com
Specific support is available for the Q24 Classic, Plus, Extended and Auto Wireless
CPU: www.wavecom.com/Q24Classic,
www.wavecom.com/Q24Plus,
www.wavecom.com/Q24Extended,
www.wavecom.com/Q24Auto
Carrier/Operator approvals: www.wavecom.com/approvals
Open AT® Introduction: www.wavecom.com/OpenAT
Developer support for software and hardware: www.wavecom.com/forum
Wireless CPU Q24 Series
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Overview
This Product Specification document defines and specifies the Wireless CPU Q24
Series is available in four different GSM/GPRS Class 10 quad-band versions:
• Q24 Classic: EGSM 900/1800/850/1900 MHz version with 32 Mb of Flash
memory and 16 Mb of PSRAM (32/16), T° range [-20°C / +55°C].
• Q24 Plus: EGSM/GPRS 900/1800/850/1900 MHz version with 32 Mb of Flash
memory and 16 Mb of PSRAM (32/16), T° range [-20°C / +55°C].
• Q24 Extended: EGSM/GPRS 900/1800/850/1900 MHz version with 32 Mb of
Flash memory and 4 Mb of SRAM (32/4), extended T° range.
• Q24 Automotive: EGSM/GPRS 900/1800/850/1900 MHz version with 32 Mb of
Flash memory and 4 Mb of PSRAM (32/4), extended T° range.
This version is dedicated to automotive applications.
This document covers the Wireless CPU alone and do not include the programmable
capabilities provided in Open AT® Software Suites.
For detailed software programming guides, refer to the documents shown in the
"Reference documents" section.
Open AT® Software Suites allow developers to natively execute ANSI C software
programs directly on the Wireless CPU.
Wireless CPU Q24 Series
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Document History
Revision Date List of revisions
001 May 2006 Creation (Preliminary version)
002 September 2006 First update
003 November 2006 Update
Wireless CPU Q24 Series
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Contents
1 References.......................................................................................................10
1.1 Reference Documents ..................................................................................... 10
1.1.1 Wavecom Reference Documents............................................................. 10
1.1.2 General Reference Documents ................................................................ 10
1.2 Abbreviations.................................................................................................. 11
2 General Description .........................................................................................14
2.1 General Information ........................................................................................ 14
2.1.1 Overall Dimensions ................................................................................. 14
2.1.2 Open AT® Software Suite ........................................................................ 14
2.1.3 GSM/GPRS Features ............................................................................... 15
2.1.4 Interfaces ................................................................................................ 15
2.1.5 External RF Connection Interfaces........................................................... 16
2.1.6 SIM Card Holder ..................................................................................... 16
2.1.7 Green Policy............................................................................................ 16
2.2 Functional Architecture................................................................................... 17
2.2.1 RF Functionalities ................................................................................... 18
2.2.2 Baseband Functionalities ........................................................................ 18
3 Interfaces ........................................................................................................19
3.1 General Purpose Connector (GPC)................................................................... 19
3.2 Power Supply ................................................................................................. 20
3.2.1 Power Supply Description....................................................................... 20
3.2.2 Power Supply Recommendation ............................................................. 22
3.2.3 Power Consumption ............................................................................... 24
3.3 Electrical Information for Digital I/O................................................................. 28
3.4 Serial Interface ................................................................................................ 28
3.4.1 SPI Bus ................................................................................................... 28
3.4.2 SPI Auxiliary Bus .................................................................................... 28
3.4.3 Two-wire Bus Interface (I2C) ................................................................... 29
3.5 Keyboard Interface .......................................................................................... 29
3.6 Main Serial Link (UART1) ................................................................................ 30
3.7 Auxiliary Serial Link (UART2) .......................................................................... 32
3.8 SIM Interface .................................................................................................. 32
3.8.1 General Description................................................................................. 32
3.8.2 SIM Card Holder ..................................................................................... 34
3.9 General Purpose Input/Output......................................................................... 36
Wireless CPU Q24 Series
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3.10 Activity Status Indication ................................................................................ 37
3.11 Analog to Digital Converter (ADC)................................................................... 38
3.12 Audio Interface ............................................................................................... 38
3.12.1 Microphone Inputs.................................................................................. 39
3.12.2 Speaker Outputs ..................................................................................... 42
3.13 Buzzer Output ................................................................................................ 44
3.13.1 Hardware Description ............................................................................. 44
3.14 Battery Charging Interface .............................................................................. 45
3.14.1 Hardware Description ............................................................................. 45
3.14.2 Temperature Monitoring ......................................................................... 47
3.14.3 Ni-Cd / Ni-Mh Charging Algorithm .......................................................... 47
3.14.4 Li-Ion Charging Algorithm....................................................................... 49
3.15 ON / ~OFF....................................................................................................... 52
3.15.1 General Description................................................................................. 52
3.15.2 Operating Sequences.............................................................................. 53
3.16 BOOT (optional) .............................................................................................. 55
3.17 Reset Signal (~RST) ........................................................................................ 56
3.17.1 General Description................................................................................. 56
3.17.2 Reset Sequence ...................................................................................... 58
3.18 External Interrupt (~INTR)............................................................................... 58
3.19 VCC output ..................................................................................................... 59
3.20 Real Time Clock Supply (VCC_RTC) ................................................................. 60
3.21 RF Interface .................................................................................................... 61
3.21.1 RF Connections....................................................................................... 61
3.21.2 RF Performance ...................................................................................... 62
3.21.3 Antenna Specifications ........................................................................... 62
4 Technical Specifications...................................................................................63
4.1 General Purpose Connector Pin-out Description.............................................. 63
4.2 I/O Circuit Diagram ......................................................................................... 67
5 Environmental Specifications ...........................................................................68
5.1 Environmental Qualifications .......................................................................... 69
5.1.1 Reflow Soldering:.................................................................................... 70
5.2 Mechanical Specifications............................................................................... 71
5.2.1 Physical Characteristics .......................................................................... 71
5.2.2 Mechanical Drawings ............................................................................. 71
6 Connector and Peripheral Device References....................................................73
6.1 General Purpose Connector Data Sheet .......................................................... 73
6.2 SIM Card Reader............................................................................................. 73
6.3 Microphone .................................................................................................... 73
6.4 Speaker........................................................................................................... 73
Wireless CPU Q24 Series
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6.5 Antenna Cable ................................................................................................ 73
6.6 RF board-to-board Connector.......................................................................... 74
6.7 GSM Antenna ................................................................................................. 74
7 Appendix.........................................................................................................75
7.1 Standards and Recommendations .................................................................. 75
7.2 Safety Recommendations (for Information only).............................................. 77
7.2.1 RF safety................................................................................................. 78
7.2.2 General safety ......................................................................................... 79
Wireless CPU Q24 Series
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Table of Figures
Figure 1: Functional architecture .............................................................................. 17
Figure 2: Power supply during burst emission.......................................................... 21
Figure 3: Maximum voltage ripple (Uripp) versus Frequencies in GSM & DCS.......... 23
Figure 4: UART1 Serial Link signals .......................................................................... 31
Figure 5: UART2 Serial Link signals .......................................................................... 32
Figure 6: SIM Card holder constraints ...................................................................... 34
Figure 7: Buzzer connection ..................................................................................... 45
Figure 8: Ni-Cd / Ni-Mh charging waveform ............................................................. 49
Figure 9: Li-Ion full-charging waveform .................................................................... 52
Figure 10: Power-ON sequence diagram .................................................................. 54
Figure 11: Power-OFF sequence diagram ................................................................. 55
Figure 12: RST pin connection.................................................................................. 58
Figure 13: Reset sequence diagram .......................................................................... 58
Figure 14: Wireless CPU pin position (bottom view) ................................................. 66
Figure 15: I/O Circuit Diagram................................................................................... 67
Figure 16: Q24 Classic, Q24 Plus and Q24 Extended Environmental classes............ 69
Figure 17: Q24 Automotive environmental classes ................................................... 70
Figure 18: Mechanical drawing. ............................................................................... 71
Wireless CPU Q24 Series
References
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1 References
1.1 Reference Documents
For more details, several reference documents may be consulted. The Wavecom
reference documents are provided in the Wavecom documents package contrary to
the general reference documents, which are not Wavecom owned.
1.1.1 Wavecom Reference Documents
[1] Automotive Environmental Control Plan for Wireless CPU Q24 Series
WM_PRJ_Q24NG_DCP_001
[2] Environmental Control Plan for Wireless CPU Q24 Series
WM_PRJ_Q24NG_DCP_002
[3] Wireless CPU Q24 Series Customer Design Guidelines
WM_PRJ_Q24NG_PTS_002
[4] Wireless CPU Q24 Series Process Customer Guidelines
WM_PRJ_Q24NG_PTS_003
[5] AT Commands Interface Guide for OS 6.57
WM_ASW_OAT_UGD_0044
[6] AT Commands Interface Guide (Bluetooth)
WM_ASW_BLU_UGD_001
[7] ADL User Guide for Open ATA® V3.12
WM_ASW_OAT_UGD_006
1.1.2 General Reference Documents
[8] "I²C Bus Specification", Version 2.0, Philips Semiconductor 1998
[9] ISO 7816-3 Standard
Wireless CPU Q24 Series
References
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1.2 Abbreviations
Abbreviation Description
3GPP Third Generation Partnership Project
ADC Analog to Digital Converter
A/D Analog to Digital conversion
AT ATtention (prefix for modem commands)
AUX AUXiliary
CBS Cell Broadcast Service
CLK CLocK
CMOS Complementary Metal Oxide Semiconductor
CODEC COder DECoder
CPU Central Processing Unit
CTS Clear To Send
dB Decibel
DC Direct Current
DCD Data Carrier Detect
DCS Digital Cellular System
DCXO Digitally Controlled Crystal Oscillator
DR Dynamic Range
DSR Data Set Ready
DTR Data Terminal Ready
EDGE Enhanced Data rates for GSM Evolution
EGSM Extended GSM
EN Enable
ESD ElectroStatic Discharges
ETSI European Telecommunications Standards Institute
FEM Front End Module
FR Full Rate
GND GrouND
GPI General Purpose Input
GPC General Purpose Connector
GPIO General Purpose Input Output
GPO General Purpose Output
GPRS General Packet Radio Service
GSM Global System for Mobile communications
Wireless CPU Q24 Series
References
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Abbreviation Description
IF Intermediate Frequency
INTR INTeRrupt
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
MS Mobile Station
NOM NOMinal
NTC Negative Temperature Coefficient
PA Power Amplifier
PBB PolyBrominated Biphenyl
PBDE PolyBrominated Diphenyl Ethers
PCB Printed Circuit Board
PCL Power Control Level
PCS Personal Communications Services
PLL Phase Lock Loop
RAM Random Access Memory
RF Radio Frequency
RI Ring Indicator
RoHS Restriction of Hazardous Substances
RST ReSeT
RTC Real Time Clock
RTS Request To Send
RX Receive
SCL Serial CLock
SDA Serial DAta
SIM Subscriber Identification Module
SMS Short Message Service
SPI Serial Peripheral Interface
SPK SPeaKer
Wireless CPU Q24 Series
References
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Abbreviation Description
SRAM Static RAM
TDMA Time Division Multiple Access
TU Typical Urban fading profile
TUHigh Typical Urban, High speed fading profile
TDMA Time Division Multiple Access
TX Transmit
TYP TYPical
UART Universal Asynchronous Receiver-Transmitter
VLSI Very Large Scale Integration
VSWR Voltage Standing Wave Ratio
Wireless CPU Q24 Series
General Description
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2 General Description
2.1 General Information
The Wireless CPU Q24 Series are self-contained EGSM/GPRS 900/1800 and 850/1900
quad-band Wireless CPUs with the following characteristics:
Note:
The Q24 classic is limited to GSM only (GPRS not supported).
2.1.1 Overall Dimensions
Completely shielded:
• Length: 58.4 mm
• Width: 32.2 mm
• Thickness: 3.9 mm:
- Excluding Shielding legs
- 6, 2 mm for Q24 Automotive, which offers either a MMS or UFL connector
on the top side
• Weight:<11 g (12g for Q24 Automotive)
2.1.2 Open AT® Software Suite
Every Wavecom Wireless CPU comes with the "Open AT® Software", which has the
following five elements:
Î Open AT® IDEs
Î Open AT® Applications
Î Open AT® Plug-Ins
Î Open AT® Operating Systems
Î Open AT® Firmwares
The Open AT® Software Suite enables a customer to develop within the Open AT®
IDE an ANSI C based Open AT® Application, which is natively executed under the
Open AT® OS which may utilise one or more Open AT® Plug-Ins and connect to
wireless networks, peripheral devices & companion controllers via the Open AT®
Firmware.
Among other things (please refer to Open AT® Programming Guides), the Open AT®
firmware offers:
• Real Time Clock (RTC) with calendar
• Echo Cancellation and noise reduction (quadri codec)
• Full GSM or GSM/GPRS Operating System stacks
Wireless CPU Q24 Series
General Description
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The Wireless CPU Q24 Series are designed to integrate various types of specific
process applications such as vertical applications (telemetry, multimedia,
automotive).
The Open AT firmware offers a set of AT commands to control the Wireless CPU.
With this standard Operating System, some interfaces of the Wireless CPU are not
available since they are dependent on the peripheral devices connected to the
Wireless CPU.
This symbol is used to indicate that the interfaces are not available with AT
commands.
The Operating System is Open AT® compliant.
The Open AT OS offers a set of Open AT® AT API’s to control the Wireless CPU. The
limitation mentioned above is not valid in this case.
2.1.3 GSM/GPRS Features
• 2-Watt EGSM 900/GSM 850 radio section running under 3.6 volts
• 1-Watt GSM1800/1900 radio section running under 3.6 Volts
• Hardware GSM/GPRS class 10 capable (except the Wireless CPU Q24
Classic)
2.1.4 Interfaces
• Complete interfacing is through a 60-pin connector:
o SPI and 2-wire bus interface
o Keyboard interface
o Two serial link interfaces (UART1 and UART2)
o 3V/1.8V SIM interface
o GPIOs
o Activity status indication interface
o Analog to digital converter
o Analog audio
o Buzzer interface
o Battery charging interface
o External interrupt
o Power supply interface
o Back-up battery interface
• Optional SIM holder (offered on Wireless Q24 Classic and Wireless CPU Q24
Plus)
AAA
TTT
Wireless CPU Q24 Series
General Description
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2.1.5 External RF Connection Interfaces
The Wireless CPU Q24 Series are available with different external RF connection
configurations:
Product reference UFL UFL or MMS Antenna pad IMP
Position Bottom side Top side Top side Bottom side
Q24 Classic X X X
Q24 Plus X X X
Q24 Extended X X X
Q24 Automotive X X X
2.1.6 SIM Card Holder
The Wireless CPU Q24 Series are available with a SIM Card holder at the TOP:
SIM interface location
Product reference 60-pin connector Optional SIM holder
Q24 Classic X X
Q24 Plus X X
Q24 Extended X
Q24 Automotive X
Caution:
• The Wireless CPU Q24 Series does not allow two SIM Cards to be connected
at the same time.
• If a Wireless CPU Q24 Classic or Q24 Plus is used with a SIM Card holder at
the top, it is mandatory to avoid a SIM interface connection through the 60-
pin General Purpose Connector (GPC).
2.1.7 Green Policy
The Wireless CPU Q24 Series are compliant with RoHS (Restriction of Hazardous
Substances in Electrical and Electronic Equipment). 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), and polybrominated diphenyl ethers (PBDE)".
Wireless CPU Q24 Series
General Description
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2.2 Functional Architecture
The global architecture of the Wireless CPU Q24 Series is shown below:
Figure 1: Functional architecture
G
E
N
E
R
A
L
P
U
R
P
O
S
E
C
O
N
N
E
C
T
O
R
Power supply
Battery
management
SIM supply
FLASH
RAM
Audio interface
RF interface
A/D converter
SIM controller
CPU
Vocoder
Memory
management
RTC
Keyboard
controller
SPI
–
I2C
Controller
UART1
–
UART2
Controller
Transceiver
PA front-end
module
RF
CONNECTIONS
Wireless CPU Q24 Series
General Description
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2.2.1 RF Functionalities
The Radio Frequency (RF) range complies with the Phase II EGSM 900/DCS 1800 and
GSM 850/PCS 1900 recommendations. The frequencies are given below:
GSM band Transmit band (Tx) Receive band (Rx)
GSM 850 824 to 849 MHz 869 to 894 MHz
EGSM 900 880 to 915 MHz 925 to 960 MHz
DCS 1800 1710 to 1785 MHz 1805 to 1880 MHz
PCS 1900 1850 to 1910 MHz 1930 to 1990 MHz
The Radio Frequency (RF) part is based on a specific quad-band chip. It includes a:
• Digital low-IF receiver,
• Quad-band LNAs (Low Noise Amplifier),
• Offset PLL (Phase Locked Loop) transmitter,
• Frequency synthesizer,
• Digitally controlled crystal oscillator (DCXO),
• Tx/Rx FEM (Front-End module) for quad-band GSM/GPRS.
2.2.2 Baseband Functionalities
The Wireless CPU Q24 Series digital parts are based on the PHILIPS-VLSI chip (ONE C
GSM / GPRS Kernel).
This chipset uses a 0.25 μm CMOS mixed technology, which allows massive
integration as well as low current consumption.
Wireless CPU Q24 Series
Interfaces
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3 Interfaces
Note:
Some of the Wireless CPU Q24 Series interface signals are multiplexed in order to
limit the total number of pins. But this architecture imposes some restrictions.
Example:
If the SPI bus and 2-wire bus are multiplexed and if the SPI bus is used, then the 2-
wire bus is not available.
Caution:
To power-ON the Wireless CPU Q24 Series correctly and to avoid any damage, all
external signals must be inactive when the Wireless CPU Q24 Series is OFF.
3.1 General Purpose Connector (GPC)
A 60-pin connector, with 0.5 mm pitch, is provided to interface the Wireless CPU Q24
Series with a customer application board containing either an LCD module, or a
keyboard, a SIM connector, a battery connection, etc.
The GPC is made by the KYOCERA / AVX group with the following reference:
• 14 5087 060 930 861.
The matting connector has the following reference:
• 24 5087 060 X00 861.
For further details, refer to section "6.1General Purpose Connector Data Sheet".
Wireless CPU Q24 Series
Interfaces
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The available interfaces on the GPC are shown below:
OS 6.57 Open AT
Section Name
Supported
Not
supported Supported Not
supported
3.4 Serial interface X X
3.5 Keyboard Interface X X
3.6 Main Serial Link X X
3.7 Auxiliary Serial Link X X
3.8 SIM interface X X
3.9 General Purpose IO X X
3.10 Activity status
indication X X
3.11 Analog to digital
converter X X
3.12 Audio Interface X X
3.14 Battery charging
interface
X X
3.15 ON/~OFF X X
3.16 Boot X X
3.17 Reset X X
3.18 External interrupt X X
3.19 VCC output X X
0 Real Time Clock X X
0 RF interface X X
3.2 Power Supply
3.2.1 Power Supply Description
The power supply is one of the key factors in the design of a GSM terminal.
Due to the burst emission in GSM / GPRS, the power supply must be able to deliver
high current peaks in a short time. During these peaks, the ripple (Uripp) on the
supply voltage must not exceed the limits specified, see the table ""Maximum voltage
ripple (Uripp) vs Frequency" given below.
• In communication mode, a GSM/GPRS class 2 terminal emits 577μs radio
bursts every 4.615ms. (see the Figure 2: Power supply during burst
emission).
• In communication mode, a GPRS class 10 terminal emits 1154μs radio bursts
every 4.615ms.
Wireless CPU Q24 Series
Interfaces
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Uripp
VBATTT
Uripp
T = 4,615 ms
t = 577 μs
Figure 2: Power supply during burst emission
Two different inputs are provided for the power supply:
• VBATT is used to supply the RF part and
• VDD is used to supply the baseband part.
VBATT: Directly supplies the RF components with 3.6 V. It is essential to keep a
minimum voltage ripple at this connection in order to avoid any phase error. In
particular, VBATT supplies the RF Power Amplifier.
The current waveform is bursted with the following duty cycles:
• 1/8 of the time (around 577 μs every 4.615 ms for GSM/GPRS class 2),
• 2/8 of the time (around 1154 μs every 4.615 ms for GSM/GPRS class 10).
The rising time is around 10 μs.
VDD: Supplies the +2.8 V ballast regulators of the Wireless CPU Q24 Series. It is
essential to keep the voltage over 3.1 volts at any time.
Notes:
• It is possible to connect VBATT and VDD together.
• In the event of separate power supply, they must be in same state: e.g. either
active or inactive at the same time.
GND: The grounding connection of the Wireless CPU Q24 Series is made through the
shielding Ö The four "legs" must be soldered to a complete ground plane.
The power supply voltage for VBATT and VDD is given below:
Power supply pin-out
Signal Pin number
VBATT 55,57,58,59,60
VDD 11
GND Shielding legs
Wireless CPU Q24 Series
Interfaces
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Electrical characteristics
Signal MIN NOM MAX
VBATT 3.2 V 3.6 V 4.5 V *
VDD 3.1 V 4.5 V
*Max operating Voltage Standing Wave Ratio (VSWR) 2:1.
3.2.2 Power Supply Recommendation
The VBATT voltage limits must be considered at any time.
The worst condition is during the burst period transmission, when current
consumption is at its highest. During this period, the VBATT voltage is minimum:
• The output voltage of the power supply drops.
• Voltage drop is present between the power supply output and the Wireless
CPU supply pins (VBATT).
To ensure a good design, make sure that during a transmit burst period, the total
drop in voltage should not set the Wireless CPU supply voltage (VBATT) below
VBATTMIN= 3.2V.
Notes:
• During a transmit burst, Wireless CPU nominal current is 1.4A only.
• To design the Wireless CPU power supply with a margin, a target of 2A is
recommended.
Caution:
• If VBATT<3.2V, the Wireless CPU automatically powers OFF.
• When a Wireless CPU is supplied with a battery, the total impedance (battery
+ contacts + protections + PCB) should be < 150mΩ to limit voltage drop-out
within emission burst.
• As the radio power amplifier is directly connected to the VBATT, the Wireless
CPU Q24 Series are sensitive to any voltage variation. When a DC/DC
converter is used, Wavecom recommends to set the converter frequency in
such a way that the resulting voltage does not exceed these values, which
are given in the following table. "Maximum voltage ripple (Uripp) vs
Frequency".
Wireless CPU Q24 Series
Interfaces
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Freq.
(kHz)
Uripp Max
(mVpp)
Freq.
(kHz)
Uripp Max
(mVpp) Freq. (kHz) Uripp Max
(mVpp)
<100 50 800 4 1500 34
200 15.5 900 15.2 1600 33
300 6.8 1000 9.5 1700 37
400 3.9 1100 32 1800 40
500 4 1200 22 >1900 40
600 2 1300 29
700 8.2 1400 30
0
5
10
15
20
25
30
35
40
45
50
200 400 600 800 1000 1200 1400 1600 1800
Input Frequency (kHz)
Uripp (mVpp)
for f<100kHz Uripp Max = 50mVpp
for f> 1800kHz Uripp Max = 40 mVpp
Figure 3: Maximum voltage ripple (Uripp) versus Frequencies in GSM & DCS
Refer to Wireless CPU Q24 Series Customer Design Guidelines [3], for further
information on power supply design.
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3.2.3 Power Consumption
The Wireless CPU Q24 Series support different power consumption modes:
Working modes Comments
OFF mode The Wireless CPU is in OFF mode.
ALARM mode The Wireless CPU is in OFF mode with RTC block running, when
an ALARM occurs, the Wireless CPU wakes-up automatically.
FAST idle mode The Wireless CPU is synchronized with an RF GSM/GPRS
network.
The internal 26 MHz of the Wireless CPU is constantly active.
SLOW idle mode The Wireless CPU is synchronized with an RF GSM/GPRS tester.
The internal 26 MHz of the Wireless CPU is not constantly active.
FAST Standby
mode
The SIM and Radio interface are deactivated via AT command or
Open AT API:
-The embedded application is running
-The serial port remains active (AT commands are available).
The internal 26 MHz of the Wireless CPU is constantly active.
SLOW Standby
mode
This mode is similar to the FAST Standby mode.
All the features are disabled (no GSM, no GPRS, no SIM and no
Serial port).
The internal 26 MHz of the Wireless CPU is not constantly active.
Communication
mode
A GSM/GPRS communication is established with a RF
GSM/GPRS network.
The power consumption depends on the configuration used. It is for this reason that
the following power consumption values are given for each modes, RF bands and
software used (AT or Open AT®).
All the following information is given, by assuming a 50 Ω RF output.
Three VBATT values are used to measure the consumption, VBATTMIN (3.2V),
VBATTMAX (4.5V) and VBATTTYP (3.6V).
The average current is given for three VBATT values and peak current given is the
maximum current peak measured with three VBATT voltages.
For more information on power consumption measurement, hardware configuration,
SIM used, and software Dhrystone application, see the AT Command Interface Guide
or OS 6.57 [5] and Wireless CPU Q24 Series Customer Design Guidelines [3].
When Wireless CPU is in Alarm mode, no voltage must be applied to any pin of the
60-pin connector, except on the BAT-RTC (pin 56) for RTC operation or ON/~OFF (pin
6) to power-ON the Wireless CPU.
3.2.3.1 Power Consumption without Open AT® Processing
The following measurement results are relevant only when:
• There is no Open AT® application,
• The Open AT® application is disabled,
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• No processing is required by the Open AT® application.
Operating mode Parameters INOM
average
IMAX
average
IMAX
peak Unit
OFF Mode VBATT= 3.6V 16.5 18 μA
Alarm Mode VBATT= 3.6V 18.5 20 μA
Paging 9 10.5 11 150Rx
mA
Fast Idle Mode Paging 2 13 13.5 150Rx
mA
Paging 9 2.8 3 150Rx
mA
Slow Idle Mode Paging 2 5.5 5.8 150Rx
mA
Fast Standby VBATT = 3.6V 9.5 11 - mA
Slow Standby VBATT = 3.6V 1.5 2 - mA
PCL5 217 225 1400Tx
mA
GSM850
EGSM900 PCL19 90 95 250Tx
mA
PCL0 165 175 800Tx
mA
Connected Mode
DCS1800
PCS1900 PCL15 90 100 250Tx
mA
Gamma 3 209 220 1400Tx
mA
GSM850
EGSM900 Gamma 17
87 90 250Tx
mA
Gamma 3 150 170 800Tx
mA
Transfer Mode
Class 8 (4Rx/1Tx) DCS1800
PCS1900 Gamma 18
84 95 250Tx
mA
Gamma 3 380 410 1400Tx
mA
GSM850
EGSM900 Gamma 17
130 160 270Tx
mA
Gamma 3 258 290 800Tx
mA
GPRS
Transfer Mode
Class 10 (3Rx/2Tx) DCS1800
PCS1900 Gamma 18
123 150 240Tx
mA
TX means that the peak current is measured during a TX transmission burst
RX means that the peak current is measured during a RX reception burst
1 Slow Idle mode power consumption depends on the SIM Card used.
Some SIM Cards respond faster than others, the longer the response time, the higher
the consumption. The measurements were performed on a large number of 3V SIM
Cards and the results in brackets shown in the above table are the minimum and
maximum currents measured from among all the SIM Cards used.
3.2.3.2 Power Consumption with Open AT® Software
The power consumption with Open AT® software used is the Dhrystone application
and the following consumption results were measured while performing on the
Dhrystone application.
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Operating mode Parameters INOM
average
IMAX
average
IMAX
peak Unit
OFF Mode VBATT = 3.6V 16.5 18 μA
Alarm Mode VBATT = 3.6V 18.5 20 μA
Paging 9 10.5 11 150Rx
mA
Fast Idle Mode Paging 2 13 13.5 150Rx
mA
Paging 9 N/A N/A N/A mA
Slow Idle Mode Paging 2 N/A N/A N/A mA
Fast Standby VBATT = 3.6V 9.5 11 150Rx
mA
Slow Standby VBATT = 3.6V N/A N/A N/A mA
PCL5 232 240 1400Tx
mA
GSM850
EGSM900 PCL19 101 110 250Tx
mA
PCL0 175 185 800Tx
mA
Connected Mode
DCS1800
PCS1900 PCL15 100 110 250Tx
mA
Gamma 3 209 220 1400Tx
mA
GSM850
EGSM900 Gamma 17
87 90 250Tx
mA
Gamma 3 150 170 800Tx
mA
Transfer Mode
Class 8 (4Rx/1Tx) DCS1800
PCS1900 Gamma 18
84 95 250Tx
mA
Gamma 3 380 410 1400Tx
mA
GSM850
EGSM900 Gamma 17
130 160 270Tx
mA
Gamma 3 258 290 800Tx
mA
GPRS
Transfer Mode
Class 10 (3Rx/2Tx) DCS1800
PCS1900 Gamma 18
123 150 240Tx
mA
3.2.3.3 Consumption Waveform
The consumption waveforms are given for an EGSM900 network configuration with
AT software running on a Wireless CPU.
The VBATT voltage value is 3.6V typical.
Four significant operating mode consumption waveforms are described as:
• Connected mode with one TX and one RX burst at PCL5 (33dBm)
• GPRS class 10 transfer mode with two TX bursts and three RX burst at
Gamma 3 (33dBm)
• Slow Idle mode with a paging 9 (every 2 seconds)
• Fast Idle mode with a paging 9 (every 2 seconds)
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The following waveform shows only the current form versus time:
Current Waveform
Connected mode with One TX burst at PCL5 and one RX
burst Slow idle mode paging 9
GPRS Class 10 Transfer mode with two TX bursts at
PCL5 and three RX burst Fast idle mode paging 9
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3.3 Electrical Information for Digital I/O
All digital I/O comply with a 3 volt CMOS.
Electrical characteristics
Parameter I/O type min Max Conditions
VIL CMOS -0.5 V 0.8 V
VIH CMOS 2.1 V 3.0 V
VOL 1X -0.2V 0.2 V IOL = -1 mA
- 2X -0.2V 0.2 V IOL = -2 mA
- 3X -0.2V 0.2 V IOL = -3 mA
VOH 1X 2.55 V
2.95V IOH = 1 mA
- 2X 2.55 V
2.95V IOH = 2 mA
- 3X 2.55 V
2.95V IOH = 3 mA
3.4 Serial Interface
3.4.1 SPI Bus
The SPI bus includes a CLK signal (SPI_CLK), an I/O signal (SPI_IO), and an EN signal
(SPI_EN) complying with the SPI bus standard.
The frequency clock is programmable from 812 kHz to 13 MHz.
Pin description
Signal Pin I/O I/O type Reset state Description Multiplexed
with
SPI_CLK 10 O CMOS 1X (C5) Pull-up to 2V8 SPI Serial
Clock
SCL
SPI_IO 8 I/O CMOS / CMOS 1X
(C2) Pull-up to 2V8 SPI Data SDA
SPI_EN 28 O CMOS 1X (C3) 2V8 SPI Enable GPO3
(C2), (C3) and (C5): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
3.4.2 SPI Auxiliary Bus
A second SPI Chip Enable (called SPI_AUX) must be used to add a second SPI
peripheral to the Wireless CPU Q24 Series.
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Pin description
Signal Pin I/O I/O type Reset state
Description Multiplexed
with
SPI_CLK 10 O CMOS 1X (C5) Pull-up to
2V8
SPI Serial
Clock SCL
SPI_IO 8 I/O CMOS / CMOS 1X (C2)
Pull-up to
2V8 SPI Data SDA
SPI_AUX 26 O CMOS 1X (C3) 2V8 SPI Aux.
Enable GPO0
(C2), (C3) and (C5): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
3.4.3 Two-wire Bus Interface (I2C)
The two-wire bus interface includes a CLK signal (SCL) and a DATA signal (SDA)
complying with a standard two-wire bus interface.
The frequency clock is programmable either to a 96 kHz or a 400 kHz.
Pin description
Signal Pin I/O I/O type Reset state Description
SCL 10 O CMOS 1X (C5) Pull-up to 2V8 Serial Clock
SDA 8 I/O CMOS / CMOS1X
(C2) Pull-up to 2V8 Serial Data
(C2) and (C5): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
3.5 Keyboard Interface
Equivalent circuit
Key
2V8
GND
2V8
Key Press
Detector
Row0
Col0
D Q
COLUMN 0
COLUMN 4
CLOCK
GND
COLUMN [0]
Key Release
Detector
Q D
ROW 0
ROW 4
ROWCK
ROW [0]
Select
Select
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An AT command or open AT API allows the input key code to be obtained (see the
AT+CMER command description). This code must then be processed by the
application.
For a total of 25 keys (5 rows x 5 columns), the keyboard interface provides 10
connections:
• 5 rows (ROW0 to ROW4) and
• 5 columns (COL0 to COL4)
The scanning is digital, and the debouncing is performed in the Wireless CPU. No
discrete components such as R, C (Resistor, Capacitor) are needed.
Pin description
Signal Pin
number
I/O I/O type Reset state Description
ROW0 13 I/O CMOS / CMOS 1X Pull-down to 0V Row scan
ROW1 15 I/O CMOS / CMOS 1X Pull-down to 0V Row scan
ROW2 17 I/O CMOS / CMOS 1X Pull-down to 0V Row scan
ROW3 19 I/O CMOS / CMOS 1X Pull-down to 0V Row scan
ROW4 21 I/O CMOS / CMOS 1X Pull-down to 0V Row scan
COL0 23 I/O CMOS / CMOS 1X Pull-up to 2V8 Column scan
COL1 25 I/O CMOS / CMOS 1X Pull-up to 2V8 Column scan
COL2 27 I/O CMOS / CMOS 1X Pull-up to 2V8 Column scan
COL3 29 I/O CMOS / CMOS 1X Pull-up to 2V8 Column scan
COL4 31 I/O CMOS / CMOS 1X Pull-up to 2V8 Column scan
3.6 Main Serial Link (UART1)
A flexible 6-wire serial interface is available, complying with V24 protocol signaling,
but not with V28 (electrical interface) due to a 2.8 volt interface.
The signals are:
• TX data (CT103/TX)
• RX data (CT104/RX)
• Request To Send (CT105/RTS)
• Clear To Send (CT106/CTS)
• Data Terminal Ready (CT108-2/DTR)
• Data Set Ready (CT107/DSR)
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The two additional signals are:
• Data Carrier Detect (CT109/DCD).
• Ring Indicator (CT125/RI).
Figure 4: UART1 Serial Link signals
Pin description
Signal Pin I/O I/O type Reset state Description Multiplexed
with
CT103/TXD1 39 I CMOS
High
impedance
Transmit
serial data
CT104/RXD1 32 O
CMOS
1X (C3) 2V8 Receive serial
data
CT105/RTS1 30 I CMOS
High
impedance
Request To
Send
CT106/CTS1 37 O
CMOS
1X (C1) 2V8 Clear To Send
CT107/DSR1 36 O
CMOS
1X (C3) 2V8 Data Set
Ready
CT108-
2/DTR1 34 I CMOS
High
impedance
Data Terminal
Ready
CT109/DCD1 51 O
CMOS
2X (C1)
High
impedance
Data Carrier
Detect
GPIO3
CT125/RI1 54 O
CMOS
2X (C1)
High
impedance Ring Indicator GPIO2
CT102/GND Shielding
legs
Ground
(C1) and (C3): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
Caution:
• The rise and fall time of the reception signals (mainly CT103) must be less
than 200 ns.
• The Wireless CPU Q24 Series are designed to operate using all the serial
interface signals. In particular, it is necessary to use RTS and CTS signals for
hardware flow control in order to avoid data corruption during transmission.
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3.7 Auxiliary Serial Link (UART2)
For specific applications, an auxiliary serial interface (UART2) is available on the
Wireless CPU Q24 Series.
E.g. Bluetooth connectivity: See AT commands interface guide (Bluetooth) [5].
Figure 5: UART2 Serial Link signals
Pin description
Signal Pin I/O I/O type Reset state Description Multiplexed
with
CT103 /
TXD2 18 I CMOS (C4) Pull down to
0V
Transmit serial
data GPI
CT104 /
RXD2 20 O
CMOS 1X
(C3) 2V8 Receive serial
data GPO2
CT106 /
CTS2 24 O
CMOS 2X
(C1)
High
impedance Clear To Send GPIO0
CT105 /
RTS2 35 I CMOS High
impedance Request To Send GPIO5
(C1), (C3) and (C4): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
3.8 SIM Interface
3.8.1 General Description
The following five signals are available:
• SIM_VCC: SIM power supply.
• SIM_RST: Reset.
• SIM_CLK: Clock.
• SIM_DATA: I/O port.
• SIM_PRES: SIM Card detection.
The SIM interface controls a 3V / 1V8 SIM (and a 5V SIM through an external SIM
driver). This interface is fully compliant with the GSM 11.12 recommendations
concerning SIM functions.
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Pin description
Signal Pin I/O I/O type Reset state Description
SIM_CLK 3 O 2V9/1V8 0V SIM Clock
SIM_RST 5 O 2V9/1V8 0V SIM Reset
SIM_DATA 7 I/O 2V9/1V8 0V SIM Data
SIM_VCC 9 O 2V9/1V8 0V SIM Power Supply
SIM_PRES 50 I 2V8 High
impedance
SIM Card Detect
Caution:
Disturbances (digital noise, ESD) in the SIM signals may interrupt the Wireless CPU
functionality, a good layout of these signals are recommended:
• Ground separation between SIM signals and others signals
• ESD protections
(Refer to Wireless CPU Q24 Series Customer Design Guidelines [3])
Electrical Characteristics
Parameters Conditions Min Type Max Unit
SIM_DATA VIH IIH = ± 20 μA 0.7xSIMVCC
V
SIM_DATA VIL IIL = 1 mA 0.3xSIMVCC
V
SIM_RST,
SIM_CLK VOH
Source current = 20
μA 0.9xSIMVCC
V
SIM_DATA Source current = 20
μA 0.8xSIMVCC
V
SIM_RST,
SIM_DATA,
SIM_CLK VOL
Sink current = -200
μA 0.4 V
SIMVCC = 2.9V 2.84 2.90 2.96 V
SIM_VCC Output
Voltage SIMVCC = 1.8V 1.77 1.8 1.86 V
SIM_CLK Rise/Fall
Time Loaded with 30 pF 20 ns
SIM_RST, Rise/Fall
Time Loaded with 30 pF 20 ns
SIM_DATA, Rise/Fall
Time Loaded with 30 pF 0.7 μs
SIM_CLK Frequency 3.25 MHz
Note for SIM_PRES connection:
• When not used, SIM_PRES must be tied to 2V8
• When used, a low to high transition means that the SIM Card is inserted and a
high to low transition means that the SIM Card is removed.
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3.8.2 SIM Card Holder
An optional SIM Card holder may be placed on top of Wireless CPU. This SIM Card
holder does not use the SIM_PRES signal.
Caution:
Customers are advised to verify that the SIM Card environmental specification used
is compliant with the Wireless CPU Q24NG environmental specifications [3] (see the
Wireless CPU Q24NG Product Technical Specification WM_PRJ_Q24NG_PTS_001).
Any application must be qualified by the customer with the SIM Card in storage,
transportation and operation.
Some ESD protections were placed to protect SIM form ESD stress; ESD protection
position is described in Figure 6 and should be taken into account during a
mechanical design.
Figure 6: SIM Card holder constraints
(see next page)
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3.9 General Purpose Input/Output
The Wireless CPU Q24 Series provide:
• 6 General Purpose I/O,
• 4 General Purpose Output,
• 1 General Purpose Input.
They are used to control any external devices such as an LCD or a Keyboard
backlight.
Pin description
Signal Pin I/O I/O type Reset state Description Multiplexed
with
GPIO0 24 I/O
CMOS / CMOS 2X
(C1)
High
impedance
General Purpose
I/O CT106/CTS2
GPIO1 52 I/O
CMOS / CMOS 2X
(C1)
High
impedance
General Purpose
O FLASH LED
GPIO4 53 I/O
CMOS / CMOS 2X
(C1)
High
impedance
General Purpose
I/O
GPIO5 35 I/O
CMOS / CMOS 2X
(C1)
High
impedance
General Purpose
I/O CT105/RTS2
GPO0 26 O CMOS 3X (C3) 2V8 General Purpose
O SPI_AUX
GPO1 22 O CMOS 3X (C3) 0V General Purpose
O
GPO2 20 O CMOS 3X (C3) 2V8 General Purpose
O CT104/RXD2
GPO3 28 O CMOS 3X (C3) 2V8 General Purpose
O SPI_EN
GPI 18 I CMOS (C4) Pull down to
0V
General Purpose
I CT103/TXD2
(C1), (C3) and (C4): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
The following GPIOs are not available (reserved) with a Wireless CPU
running with an AT commands firmware:
A
A
A
T
T
T
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Pin description
Signal Pin I/O I/O type Reset state Description Multiplexed
with
GPIO2 54 I/O
CMOS / 2X
(C1)
High
impedance
General Purpose
I/O CT125/RI1
GPIO3 51 I/O
CMOS / 2X
(C1)
High
impedance
General Purpose
I/O CT109/DCD1
(C1): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
3.10 Activity Status Indication
The activity status indication signal may be used to drive a FLASH LED through an
open collector transistor.
Q24 Series LED status
LED
status Comments
OFF Wireless CPU in download mode or Wireless CPU is in OFF mode.
ON Permanent Wireless CPU switched ON, not registered
on the network.
Slow
flash
LED ON for 200 ms, OFF for
2 s
Wireless CPU switched ON, registered on
the network.
Quick
flash
LED ON for 200 ms, OFF for
600 ms
Wireless CPU switched ON, registered on
the network and communication is in
progress.
Pin description
Signal Pin I/O I/O type Reset state Description Multiplexed with
FLASH LED 52 O CMOS 2X (C1)
High impedance
LED driving GPIO1
(C1): To obtain more details on I/O type, refer to chapter "I/O Circuit diagram"
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3.11 Analog to Digital Converter (ADC)
Equivalent circuit
An Analog to Digital Converter is provided by the Wireless CPU Q24 Series. This
converter is a10-bit resolution, ranging from 0 to 2.8 V.
Pin description
Signal Pin number
I/O I/O type Description
AUXV0 33 I Analog A/D converter
Electrical Characteristics
Parameter Min Max Unit
Resolution 10 Bits
Hardware sampling rate 17 Ksps/s
Input signal range 0 2V8 V
ADC reference accuracy 0.75 2 %
Integral accuracy +/- 1 LSB
Differential accuracy +/- 1 LSB
Input impedance ( R ) 10 MΩ
Input impedance ( C ) 100 nF
3.12 Audio Interface
Two different microphone inputs and two different speaker outputs are supported.
The Wireless CPU Q24 Series also include an echo cancellation feature, which allows
hands-free operation.
AUXV0
Q24 Series
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Caution:
When speakers and microphones are exposed to the external environment, it is
recommended to add ESD protection on the audio interface lines.
3.12.1 Microphone Inputs
The MIC2 inputs already include the biasing for an electret microphone, thus allowing
easy connection to a handset.
The MIC1 inputs do not include an internal bias. MIC1/SPK1 may be used for a
hands-free system or a handset, including biasing circuit for the microphone.
The microphone connections may be either differential or single-ended, but using a
differential connection in order to reject common mode noise and TDMA noise is
strongly recommended.
Caution:
While using a single-ended connection, ensure to have a good ground plane, a good
filtering as well as shielding, in order to avoid any disturbance on the audio path.
3.12.1.1 Common Microphone Input Characteristics
Both microphone inputs are designed with the following audio transmit
characteristics:
Internal audio filter characteristics
Frequency Gain
0-150 Hz < -22 dB
150-180 Hz < -11 dB
180-200 Hz < -3 dB
200-3700 Hz 0 dB
>4000 Hz < -60 dB
The gain in the MIC inputs are internally adjusted and may be tuned from -6.5 dB to
51.3 dB by using AT commands (refer to AT commands documentation [5]).
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Microphone gain versus Max input voltage
Using Controller 1 Using Controller 2
Transmit Gain
(dB)
Max Vin (mVrms)
Transmit Gain (dB)
Max Vin (mVrms)
+30 43.80 -6.5 3031
+33 31.01 -6 2861
+36 21.95 0 1434
+39 15.54 +9.5 480
+42 11 +10 454
+45 7.79 +30.3 43.80
+48 5.51 +30.8 41.36
+51 3.9 +50.8 4.14
- - +51.3 3.90
* For more details, refer to the AT commands documentation [5]
3.12.1.2 MIC1 Microphone Inputs
The MIC1 inputs are differential and do not include internal bias. To use these inputs
with an electret microphone, bias must be generated outside the Wireless CPU Q24
Series in accordance with the characteristic of this electret microphone. These inputs
are the standard inputs used either for an external headset or a hands-free kit.
The impedance of microphone 1 must be around 2 kΩ. AC coupling is already
embedded in the Wireless CPU.
Equivalent circuits
DC equivalent circuit AC equivalent circuit
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Pin description
Signal Pin I/O I/O type Description
MIC1P 42 I Analog Microphone 1 positive
input
MIC1N 44 I Analog Microphone 1 negative
input
Electrical Characteristics
MIC1 Electrical characteristics
Parameters Min
Typ
Max
Unit
DC Characteristics - - - - V
AC Characteristics
100 Hz<F<5 kHz Z1
80 120
160 KΩ
3.12.1.3 MIC2 Microphone Inputs
The MIC2 inputs are differential inputs. They already include convenient biasing for
an electret microphone (0.5 mA and 2 volts). This electret microphone may be directly
connected to these inputs.
The impedance of microphone 2 must be around 2 kΩ. These inputs are the standard
inputs for a handset design, while MIC1 inputs may be connected either to an
external headset or a hands-free kit.
AC coupling is already embedded in the Wireless CPU.
Equivalent circuit
DC equivalent circuit AC equivalent circuit
Pin description
Signal Pin I/O I/O type Description
MIC2P 46 I Analog Microphone 2 positive
input
MIC2N 48 I Analog Microphone 2 negative
input
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Electrical Characteristics
MIC2 Electrical characteristics
Parameters Min Typ Max Unit
MIC2- 0.225 0.35 0.475 V
MIC2+ 2.025 2.15 2.275 V
Output
current
0.5 1 mA
Internal biasing
DC
Characteristics
R2 900 1150 1400 Ω
AC
Characteristics
100 Hz<F<5
kHz
Z2 1.2 1.5 1.8 KΩ
3.12.2 Speaker Outputs
Two speaker outputs are available: SPK1 and SPK2.
Both speaker outputs may be represented as follows:
Equivalent circuit
3.12.2.1 Common Speaker Output Characteristics
The connection may be differential or single-ended, but using a differential connection
to reject common mode noise and TDMA noise is strongly recommended. Moreover,
in single-ended mode, the power is reduced by two, compare to the differential mode
Caution:
When using a single-ended connection, ensure to have a good ground plane, a good
filtering as well as a good shielding in order to avoid any disturbance on the audio
path.
Speaker outputs SPK1 and SPK2 are push-pull amplifiers and may be loaded down to
150Ω and up to 1 nF
The impedance of the speaker amplifier outputs in differential mode is: R ≤ 1 Ω +/-10
% .
When speaker output is not used, the speaker interface is in three states and a 20K
+/-30% impedance is kept between SPK1N and SPK1P as well as SPK2N and SPK2P.
These outputs are differential and the output power may be adjusted by step of 2 dB.
The output may be directly connected to a speaker.
The gain in the speaker outputs are internally adjusted and may be tuned by using AT
commands (refer to the AT commands documentation [5]).
Q24 Series
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Speaker gain versus Max output voltage
Receive Gain
(dB)*
Max output level
(Vrms)
Max.speaker load
(Ω)
+2 1.74 150
0 1.38 50
-2 1.099 32
-4 0.873 32
-6 0.693 32
-8 0.551 32
-10 0.437 32
-12 0.347 32
-14 0.276 32
-16 0.219 32
-18 0.174 32
-20 0.138 32
-22 0.110 32
-24 0.087 32
-26 0.069 32
*Analog gain: may not be significant
3.12.2.2 Speaker 1 Output
Pin description
Signal Pin I/O I/O type Description
SPK1P 41 O Analog Speaker 1 positive output
SPK1N 43 O Analog Speaker 1 negative output
3.12.2.3 Speaker 2 Output
Pin description
Signal Pin I/O I/O type Description
SPK2P 45 O Analog Speaker 2 positive output
SPK2N 47 O Analog Speaker 2 negative output
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3.13 Buzzer Output
3.13.1 Hardware Description
The buzzer interface is accessible through an open drain embedded on the Wireless
CPU Q24 Series.
A buzzer may be directly connected between this output and VBATT.
Equivalent circuit
Pin description
Signal Pin I/O I/O type Description
BUZZER 49 O Analog Buzzer output
Operating conditions
Parameter Condition Min Max Unit
VOL Iol = 100mA 0.4 V
IPEAK VBATT = VBATT Max 100 mA
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Caution:
A diode against transient peak voltage must be connected as described below.
Figure 7: Buzzer connection
For the implementation of the buzzer interface, refer to the Customer Design
Guidelines [3].
3.14 Battery Charging Interface
3.14.1 Hardware Description
Caution:
The battery charging interface does not allow the Wireless CPU to be supplied and is
only used to charge a battery connected to VBATT.
Battery charging is performed through a switching transistor connecting the VBATT
signal to the Charger (CHG_IN signal).
The switching transistor is controlled by the operating system with two kinds of
algorithms.
Equivalent circuit
BAT_TEMP
Q24 Series
CHG_IN
Charger controller
5K6
T
Charger
detection
VBATT
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The Wireless CPU Q24 Series supports three types of battery technologies:
• Ni-Cd (Nickel-Cadmium), which is charged with the algorithm 0
• Ni-Mh (Nickel-Métal Hydrure), which is charged with the algorithm 0
• Li-Ion (Lithium-Ion), which is charged with the algorithm 1
The algorithm controls the frequency and the connected time of switching transistor
(T).
To select the algorithm:
• AT+WBCM=4,0Æ Ni-Cd/Ni-Mh (by default)
• AT+WBCM=4,1ÆLi-Ion
• AT+WBCM=4,2ÆTo know which algorithm is used
During the charging procedure, battery charging level is controlled.
When the operating system is not activated (VBATT< 3V2), the battery charging
procedure remains possible by hardware control as long as the charger is plugged:
• VBATT<2V8: the battery is charged through a trickle current
• 2V8<VBATT<3V2: pre-charging current (min=40mA, typ=50mA,
max=60mA)
The purpose of the trickle and pre-charging current is to:
• Allow the battery charging, even if VBATT is too low to power-ON the
Wireless CPU.
• Avoid battery damage, by preventing the battery from being discharged
below the minimum battery level.
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Pin description
Signal Pin number
I/O I/O type Description
CHG_IN 1, 2, 4 I Analog Current source
input
BAT_TEMP 38 I Analog A/D converter
Electrical Characteristics
Parameter Min Typ
Ma
x Unit
Resolution 10 bits
Sampling rate 90.3 Ksps/s
Input Impedance
(R) 1M
kΩ
Input Impedance
(C)
10
0 nF
BAT_TEM
P
Input signal range
0
2V
8 V
CHG_IN <BattLevelMax
+0.5* - 6 V
*
The min CHG_IN voltage depends on the battery characteristics. (see the following chapter).
3.14.2 Temperature Monitoring
Temperature monitoring is available only for the Li-Ion battery with algorithm 1. The
BAT-TEMP ADC input must be used to sample the temperature analog signal
provided by an NTC temperature sensor. The minimum and maximum temperature
range may be set by an AT command (See the Li-Ion charging algorithm).
3.14.3 Ni-Cd / Ni-Mh Charging Algorithm
During the charging process of a Ni-Cd and Ni-Mh battery, it is required to tune
software parameters in the Wireless CPU operating system:
AT+WBCM=<Mode>, <ChargeInd>, <BattLevelMax>, <BattLevelMin>,
<TPulseInCharge>, <TPulseOutCharge>, <BattIntRes>, <BattChangeLevel > (See the
AT command Interface Guide [5]).
Caution:
The parameters need to be tuned according to the battery specifications.
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The main parameters to be tuned are:
Parameters related to time:
• TPulseInCharge: Monitoring time of the VBATT voltage during a charging
process (T2)
• TPulseOutCharge: Monitoring time of the VBATT voltage when charging
process is not activated(T3)
Parameters related to voltage:
• BattLevelMin: Minimum VBATT voltage allowed by the battery (>3.2V)
• BattLevelMax: Maximum VBATT voltage allowed by the battery (<4.5V)
Ni-Cd / Ni-Mh battery and tunable parameter
Parameter Default value Min Max Unit
T1 1000 (Not tunable) ms
T2 100 100 10000 ms
T3 5000 100 10000 ms
BattLevelMin 3400 3400 3800 mV
BattLevelMax 4200 4000 5000 mV
Ni-Cd / Ni-Mh charging process
Charger connected: CHG_IN =VBATT+0.5V
VBATT Operating
system
Charging status Switching transistor
(T)
VBATT<2V8 Not activated Trickle charge Open
2V8<VBATT<3V2
Not activated Pre-charging 50mA typ cross the
switching transistor
3V2<VBATT
VBATT<BattLevelMin
Activated Charging process is
automatically started
Open (T2)/Close (T1)
periodically
Charging process
running
Open (T2)/Close (T1)
periodically
Activated
Charging process not
activated
VBATT is monitored
periodically (T3)
BattLevelMin<VBATT
VBATT<BattLevelMax
Deactivated Trickle charge Open
>=BattLevelMax Activated Charging process is
ended
Open
The graph below summarizes the charging process (charge and discharge).
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Note:
A charger is connected to the CHG_IN pin of the Wireless CPU.
Figure 8: Ni-Cd / Ni-Mh charging waveform
3.14.4 Li-Ion Charging Algorithm
During the charging process of a Li-Ion battery, it is required to tune parameters
embedded in the Wireless CPU operating system:
AT+WBCM=<Mode>,<ChargeInd>,<TdeltaTemp>,<BattLevelMax>,
<BattLevelMin>, <MaxVoltPulse>,
<MaxBatteryTemp>,<MinBatteryTemp>,<Charging_Current>, <DedicatedVoltStart>,
<Battery_Pulse_Charging_Timeout>, <Battery_Fast_Charging_Timeout>,
<TPulseOutCharge>, <BattIntRes>, <BattChangeLevel> (See the AT command
Interface Guide [5]).
Caution:
The parameters need to be tuned according to the battery specifications.
The main parameters to be tuned are:
Parameters related to time:
• BatteryFastChargingTimeout: Maximum duration of the fast charging period.
(T1)
• BatteryPulseChargingTimeout: Maximum duration of the charging pulse
period.(T2)
• TPulseOutCharge: Monitoring time of the VBATT voltage when charging
process is not activated(T3)
Parameters related to voltage:
• BattLevelMin: Minimum VBATT voltage allowed by the battery (>3.2V)
• BattLevelMax: Maximum VBATT voltage allowed by the battery (<4.5V)
• DedicatedVoltStart: Pulse charging is started above this threshold voltage
Parameter related to charging current:
• ChargingCurrent: Charging current delivered by the charger
VBATT=BattLevelMax:
Charging process
ended
VBATT=BattLevelMin:
Charging process
automatically started
T3 T3
T2 T2 T1 T1 T1 T2
Switching transistor:
Closed
Open
Time
VBAT
T
BattLevelMax
BattLevelMin Time
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Parameters related to safety:
These parameters are important; as they ensure that the battery will not be damaged.
• MaxVoltPulse: Maximum VBATT over-voltage supported by the PCM of the
battery (Protection Circuit Module)
• TdeltaTemp: Delta time interval to measure the variation of the battery
temperature
• Min_Battery_Temp_Volt: Lowest value for battery temperature sensor voltage
in mV (highest temperature with a NTC
• Max_Battery_Temp_Volt: Highest value for battery temperature sensor
voltage in mV (lowest temperature with a NTC)
Li-Ion battery and tunable parameters
Parameters Default value Min Max Unit
T1 90 70 90 min
T2 90 60 90 min
T3 5000 100 10000 ms
BattLevelMin 3400 3400 3800 mV
BattLevelMax 4200 4000 5000 mV
DedicatedVoltStart 4000 4000 4199 mV
ChargingCurrent 500 500 800 mA
MaxVoltPulse 4608 4200 4608 mV
TdeltaTemp 3 1 5 mm
Max_Battery_Temp_Volt 2171 (≈3˚C) 1816 (≈14˚C) 2256 (≈ 0˚C) mV
Max_Battery_Temp_Volt 908 (≈42˚) 831 (≈45˚C) 1233 (≈31˚C) mV
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Li-Ion charging process
Charger connected: CHG_IN =VBATT+0.5V
VBATT Operating
system
Charging status Switching transistor
(T)
VBATT<2V8 Not
activated
Trickle charge Open
2V8<VBATT<3V2 Not
activated
Pre-charging 50mA typ cross the
switching transistor
3V2<VBATT<BattLevelMin Activated Fast charging process is
automatically started
Close
Fast charging process
running
Close (<T1) BattLevelMin<VBATT
VBATT< DedicatedVoltStart
Activated
Charging process not
activated
VBATT is monitored
periodically (T3)
Deactivated Trickle charge Open
DedicatedVoltStart <VBATT
VBATT<BattLevelMax
Pulse charging process
running
Open (0.1s)/Close
(1s) periodically
(<T2)
Activated
Charging process not
activated
VBATT is monitored
periodically (T3)
Deactivated Trickle charge Open
>=BattLevelMax Activated When VBATT is
measured
>=BattLevelMax, the
open time of the
switching transistor
increases until it reaches
10s, then the charging
process is ended.
Open: Timing
increases regularly
from 0.1s to 10s
Close: 1s
Open and close being
periodical
The graph below summarizes the charging process (charge and discharge).
Note:
A charger is connected to the CHG_IN pin of Wireless CPU.
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Figure 9: Li-Ion full-charging waveform
3.15 ON / ~OFF
3.15.1 General Description
This input is used to switch ON or OFF the Wireless CPU.
A high level signal must be provided on the ON/~OFF pin to switch ON the Wireless
CPU.
The voltage level of this signal must be maintained between 2.4 V and 5V for a
minimum of 1 s.
This signal may be left at high level until switched OFF.
Switching transistor state
Time
1s
1s 1s 1s
Pulse charging
mode
<T
1
Close
d
Open
VBATT
BattLevelMax
BattLevelMin Time
Fast
charging
mode
DedicatedVoltStart
<T2
VBATT>=BattLevelM
ax
The opening time of
the switching
transistor increases
until it reaches 10s,
then the charging
process is ended
10
The charge of the
battery is ended
and being
monitored
periodically (T3)
T3 T3
When
VBATT=BattLevelMin,
the fast charging
mode is automatically
started
1s
1s
1s 1s
1s 1s 1s
Li-Ion charging
optimization
method
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To switch OFF the Wireless CPU, the pin ON/~OFF must be released and, through the
firmware, the Wireless CPU may be switched OFF (using the AT+CPOF command).
Equivalent circuit
Pin description
Signal Pin
I/O
I/O type
Description
ON/∼OFF 6 I CMOS Power ON/OFF
Electrical Characteristics
Parameters Min
Max
Unit
VIL 0 0.6 V
VIH 2.4
5 V
3.15.2 Operating Sequences
3.15.2.1 Power-ON
Once the Wireless CPU is supplied, the application must set the ON/~OFF signal to
high, to start the Wireless CPU power-ON sequence.
The ON/~OFF signal must be held for 1 sec minimum. After this time, an internal
mechanism maintains this on hold condition. During the power-ON sequence, an
internal reset is automatically performed by the Wireless CPU for 240 ms (typical).
During this phase, any external reset should be avoided.
GND
ON/∼OFF
47K
100K
47K
VDD
Q24 Series
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Once initialization is completed (timing is SIM and network dependent) the AT
interface answers "OK" to the application1. For further details, please refer to the AT
commands documentation (AT+WIND, AT+WAIP).
Figure 10: Power-ON sequence diagram
3.15.2.2 Power-OFF
To power-OFF the Wireless CPU correctly, the application must set the ON/~OFF
signal to low and then send the AT+CPOF command to de-register from the network
and switch off the Wireless CPU. Once the "OK" answer is issued, the Wireless CPU is
set to OFF mode. Then the VDD may be disconnected.
1 For this, the application must send AT↵. If the application manages hardware flow
control, the AT command may be sent during the initialisation phase. Another
solution is to use the AT+WIND command to obtain an unsolicited status from the
Wireless CPU.
VDD
ON/~OFF
Internal RESET
Status:
1s minimum
240ms Typ
OFF mode Reset mode ON mode Ready
SIM and network dependent
AT command: “AT” is send
“
OK
”
is received
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Figure 11: Power-OFF sequence diagram
Caution:
It is not allowed to power-OFF the Wireless CPU by disconnecting the supply pins
VBATT and VDD.
Note:
Instead of sending AT+CPOF, use the Wireless CPU external interrupt pin (see the
External interrupt)
3.16 BOOT (optional)
This input may be used to download software to the Flash memory of the Wireless
CPU.
For applications based on AT commands, this is a backup download procedure (refer
to document [3] Customer Design Guidelines).
The internal BOOT procedure starts when this pin is low during Wireless CPU reset.
Caution:
• This BOOT pin must be left open for normal use or Xmodem download.
• The nominal firmware download procedure uses the Xmodem.
In Internal BOOT mode, low level must be set through a 1KΩ resistor.
• BOOT = logical state 0, for download mode and
• BOOT = logical state 1, for normal mode.
VDD
ON/~OFF
Status: Ready OFF mode
Network dependent
AT+CPOF “OK” answer
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Pin description
Signal Pin I/O I/O type Reset state Description
BOOT 12 I CMOS (C5) Pull-up to 2V8 Flash Downloading
(C5): To obtain more details on I/O type, refer to the chapter "I/O Circuit diagram"
3.17 Reset Signal (~RST)
3.17.1 General Description
The reset signal is used to force a reset procedure by providing low level, for at least
500 μs.
The Wireless CPU remains in reset mode as long as the ~RST signal is held low.
The reset process is activated either by the external ~RST signal or automatically by
an internal signal (coming from a reset generator).
• ∼RST = logical state 0, for Wireless CPU Reset and
• ∼RST = logical state 1, for normal mode.
Note:
A software reset is always preferred to a hardware reset.
The automatic reset is activated during a power-ON sequence.
During a power-ON sequence, the ~RST pin of the Wireless CPU is set to the logical
state 0.
Caution:
During a power-ON sequence of the Wireless CPU, avoid to apply any voltage in the
~RST pin.
• Otherwise:
- Wireless CPU reset procedure may not perform correctly
- Wireless CPU may be damaged
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Equivalent circuit
Pin description
Signal Pin number I/O I/O type Description
∼RST 14 I/O Schmitt Reset
Electrical characteristics
Parameters Min Max Condition
VT- 0.9 1 Hysteresis
thresholds VT+ 1.7 1.8
Reset
state
0 0.4 IOL = -50 μA
∼RST
Normal
mode
2.74 2.86 IOH = 50 μA
This signal may also be used to provide a reset to an external device. It then behaves
as an output. If no external reset is necessary, then this input may be left open.
System
Reset
GND
GND
10nF
GND
Power
ON
Reset
2V8
10nF
VT-
VT+
4K7
4K7
~RST
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If used (as an emergency reset), it must be driven either by an open collector or an
open drain output:
Figure 12: RST pin connection
For the implementation of the reset interface, refer to the Customer Design Guidelines
3.17.2 Reset Sequence
To activate the "emergency "reset sequence, the ~RST signal must be set to low for
500 μs minimum.
As soon as the reset is completed, the AT interface answers "OK" to the application.
In this case, the application must send AT↵. If the application manages hardware
flow control, the AT command may be sent during the initialization phase.
Another solution is to use the AT+WIND command to obtain an unsolicited status
from the Wireless CPU.
For further details, refer to the AT commands documentation [5].
Figure 13: Reset sequence diagram
3.18 External Interrupt (~INTR)
The Wireless CPU Q24 Series provide an external interrupt input ~INTR. This input is
highly sensitive.
An interrupt is activated on a falling edge.
If this signal is not used, it may be left open.
If used, this input must be driven either by an open collector or an open drain output.
GND
~RST
External reset
External reset
Status: Ready ON mode
Min 500µs
Typ: 2ms
Ready
Reset mode
SIM and network dependent
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Pin description
Signal Pin number I/O I/O type Reset state Description
~INTR 16 I CMOS (C5)
Pull-up to 2V8
External Interrupt
(C5): To obtain more details on I/O type, refer to the chapter "I/O Circuit diagram"
Electrical characteristics
Parameter Min Max Unit
VIL -0.5 0.7 V
VIH 2.2 3.0 V
The external interrupt may be used to switch OFF the Wireless CPU. To enable this
feature, AT+WFM=1, 83 must be entered:
The ON/OFF signal exists earlier in open or in low level, if an interrupt is received on
the external interrupt pin, the Wireless CPU changes automatically to OFF mode,
similar to an AT+CPOF command.
Notes:
• By default, this feature is not activated
• Use AT+WFM=1,84 to return to default mode
3.19 VCC output
This output may be used to power some external functions. This power supply is
available when the Wireless CPU is ON.
Pin description
Signal Pin number I/O I/O type Description
VCC 40 O Supply Digital supply
Operating conditions
Parameter Condition Min Max Unit
I = 0 2.86 V Output voltage
I = 100 mA 2.74 V
Output Current 100 mA
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3.20 Real Time Clock Supply (VCC_RTC)
The VCC_RTC input is used to provide a back-up power supply for the internal Real
Time Clock (RTC).
The RTC is supported by the Wireless CPU when power-ON, but a back-up power
supply is necessary to save date and time information, when the Wireless CPU is
switched off.
If the RTC is not used, this pin may be left open.
Equivalent circuit
If VDD<2.6V, the RTC regulator is disabled, a back-up battery is then necessary to
save date and time information.
Pin description
Signal Pin number I/O I/O type Description
VCC_RTC 56 I/O Supply RTC Back-up supply
Operating conditions
Parameter Condition Min Typ Max Unit
Input voltage 2 2.75 V
Input current VCC_RTC=2.5 V
VDD=3.6V 3 10 μA
Output voltage VDD=3.6V, Iout=0.5mA 2.65 2.7 2.75 V
Output current VDD=3.6, Vout=2.25V 0.4 1 2 mA
Q24 Series
RTC
block
RTC regulator BAT-RTC
VDD>2.6V
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3.21 RF Interface
The impedance is 50Ω nominal and the DC impedance is 0Ω.
3.21.1 RF Connections
The RF interface supports 4 type of connections:
• U.FL Connector (on both sides)
A wide variety of cables fitted with U.FL connectors are proposed by different
suppliers.
• MMS Connector
The MMS connector stands on three pliable legs. The design guarantees the
receptacle stability after placement. The MMS snap on mating system ensures a
correct positive connection on each time.
A wide variety of cables fitted with MMS connectors are proposed by different
suppliers.
• Soldered solution
A soldered solution is preferably based on an RG178 coaxial cable.
• IMP connector
This connector is dedicated to different board applications and must be soldered
to the customer board. The supplier is Radiall with the following reference:
R107 064 900 or R107 064 920.
Notes:
• The Wireless CPU Q24 Series does not support an antenna switch for a car kit,
but this function may be implemented externally and it may be driven using a
GPIO.
• The antenna cable and connector should be selected in order to minimize losses
in the frequency bands used for GSM 850/900MHz and 1800/1900MHz.
• 0.5dB may be considered as a maximum value for loss between the Wireless
CPU and an external connector.
• In order to maintain the RoHS status of the Wireless CPU, Wavecom
recommends that
lead-free solder wire and flux
be used for Wireless CPU
assembly on the motherboard and RF cable, assembly on the Wireless CPU..
Example:
• Solder Wire: Kester 245 Cored 58 (Sn96.5Ag3Cu0.5)
• Flux: Kester 952-D6
Wireless CPU Q24 Series
Interfaces
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3.21.2 RF Performance
RF performance is compliant with the ETSI recommendation ETSI TS 151 010-1.
The main parameters for a GSM receiver are:
• GSM850 Reference Sensitivity = -104 dBm Static & TUHigh
• EGSM900 Reference Sensitivity = -104 dBm Static & TUHigh
• DCS1800 Reference Sensitivity = -102 dBm Static & TUHigh
• PCS1900 Reference Sensitivity = -102 dBm Static & TUHigh
• Selectivity @ 200 kHz: > +9 dBc
• Selectivity @ 400 kHz: > +41 dBc
• Linear dynamic range: 63 dB
• Co-channel rejection: >= 9 dBc
And for Transmitters:
• Maximum output power (EGSM & GSM850): 33 dBm +/- 2 dB at ambient
temperature
• Maximum output power (GSM1800 & PCS1900): 30 dBm +/- 2 dB at ambient
temperature
• Minimum output power (EGSM & GSM850): 5 dBm +/- 5 dB at ambient
temperature
• Minimum output power (GSM1800 & PCS1900): 0 dBm +/- 5 dB at ambient
temperature
3.21.3 Antenna Specifications
The antenna must fulfill the following requirements, as specified in the table below:
• The optimum operating frequency depends on the application. A dual-band or a
quad-band antenna must operate in these frequency bands and have the
following characteristics:
Q24
Characteristic
EGSM 900 DCS 1800 GSM 850 PCS 1900
TX Frequency 880 to
915 MHz
1710 to
1785 MHz 824 to 849 MHz 1850 to
1910 MHz
RX Frequency 925 to
960 MHz
1805 to
1880 MHz 869 to 894 MHz 1930 to
1990 MHz
Impedance 50Ω
Rx max 1.5 :1
VSWR Tx max 1.5 :1
Typical
radiated gain 0dBi in one direction at least
Wireless CPU Q24 Series
Technical Specifications
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4 Technical Specifications
4.1 General Purpose Connector Pin-out Description
Pin
Name I/O I/O type Reset state Description Dealing with
unused pins
1 CHG_IN I Supply -
Supply for battery
charging Not connected
2 CHG_IN I Supply -
Supply for battery
charging Not connected
3 SIM_CLK O - 0V
Clock for SIM
interface
Not connected if
Q24 SIM Card
holder is used
4 CHG_IN I Supply -
Supply for battery
charging Not connected
5 SIM_RST O - 0V
Reset for SIM
interface
Not connected if
Q24 SIM Card
holder is used
6 ON/~OFF I CMOS - Power ON/OFF
control Must be used
7 SIM_DATA I/O - 0V I/O for SIM
interface
Not connected if
Q24 SIM Card
holder is used
8 SDA/SPI_IO I/O CMOS/CMOS 1X
(C2)
Pull-up to
2V8
Two-wire
interface or SPI
Serial Data
Not connected
9 SIM_VCC O Supply 0V SIM Card supply
Not connected if
Q24 SIM Card
holder is used
10 SCL/SPI_CLK O CMOS 1X (C5) Pull-up to
2V8
Two-wire
interface or SPI
Serial clock
Not connected
11 VDD I Supply - Low power supply Must be used
12 BOOT I CMOS (C5) Pull-up to
2V8 BOOT
Test point
(Download
purposes)
13 ROW0 I/O CMOS/ CMOS
1X
Pull-down
to 0V Keyboard Row Not connected
14 ~RST I/O Schmitt 0V Reset Test point
(Debug purposes)
15 ROW1 I/O CMOS/ CMOS
1X
Pull-down
to 0V Keyboard Row Not connected
16 ~INTR I CMOS (C5) Pull-up to
2V8 External interrupt Not connected
17 ROW2 I/O CMOS/ CMOS
1X
Pull-down
to 0V Keyboard Row Not connected
Wireless CPU Q24 Series
Technical Specifications
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Pin
Name I/O I/O type Reset state Description Dealing with
unused pins
18 GPI or
CT103/TXD2 I CMOS (C4)
Pull-down
to 0V
General Purpose
Input or
Transmit serial
data (UART2)
Not connected
19 ROW3 I/O CMOS/ CMOS
1X
Pull-down
to 0V Keyboard Row Not connected
20 GPO2 or
CT104/RXD2 O CMOS 3X (C1) or
CMOS 1X (C1) 2V8
General Purpose
Output or
Receive serial
data (UART2)
Not connected
21 ROW4 I/O CMOS/ CMOS
1X
Pull-down
to 0V Keyboard Row Not connected
22 GPO1 O CMOS 3X (C3) 0V General Purpose
Output Not connected
23 COL0 I/O CMOS/ CMOS
1X
Pull-up to
2V8 Keyboard Column Not connected
24 GPIO0 or
CT106/CTS2
I/O
O
CMOS/CMOS 2X
(C1) or CMOS 2X
(C1)
High
impedance
General Purpose
I/O or
Clear To Send
(UART2)
Not connected
25 COL1 I/O CMOS/ CMOS
1X
Pull-up to
2V8 Keyboard Column Not connected
26 GPO0 or
SPI_AUX
O
O
CMOS 3X (C3)
or
CMOS 1X (C3)
2V8
General Purpose
Output or
SPI_AUX
Not connected
27 COL2 I/O CMOS/ CMOS
1X
Pull-up to
2V8 Keyboard Column Not connected
28 GPO3 or
SPI_EN or
O
O
CMOS 3X (C3) or
CMOS 1X (C3) 2V8
SPI enable or
General Purpose
Output
Not connected
29 COL3 I/O CMOS/ CMOS
1X
Pull-up to
2V8 Keyboard Column Not connected
30 CT105/RTS1 I COS High
impedance
Request To Send
(UART1)
100kΩ pull-up to
2V8 with test
point (download
and debug
purposes)
31 COL4 I/O CMOS/ CMOS
1X
Pull-up to
2V8 Keyboard Column Not connected
32 CT104/RXD1 O CMOS 1X (C3) 2V8 Receive serial data
(UART1)
Test point
(Download
purposes)
33 AUXV0 I Analog High
impedance
Auxiliary ADC
input 0 Tied to GND
34 CT108-
2/DTR1 I CMOS High
impedance
Data Terminal
Ready (UART1)
100kΩ pull-up to
2V8 with test
point (download
and debug
purposes)
Wireless CPU Q24 Series
Technical Specifications
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Pin
Name I/O I/O type Reset state Description Dealing with
unused pins
35 GPIO5 or
CT105/RTS2
I/O
I
CMOS/CMOS 2X
(C1) or CMOS
High
impedance
General Purpose
I/O or
Clear To Send
(UART2)
Not connected
36 CT107/DSR1
O CMOS 1X (C3) 2V8 Data Set Ready
(UART1) Not connected
37 CT106/CTS1 O CMOS 1X (C1) High
impedance
Clear To Send
(UART1)
Test point
(Download
purposes)
38 BAT_TEMP I Analog High
impedance
ADC input for
battery
temperature
measurement
Tied to GND
39 CT103/TXD1 I CMOS High
impedance
Transmit serial
data (UART1)
100kΩ pull-up to
2V8 with test
point (download
and debug
purposes)
40 VCC O Supply 2V8 2.8 V digital
supply output Not connected
41 SPK1P O Analog - Speaker 1
positive output Not connected
42 MIC1P I Analog - Microphone 1
positive input Not connected
43 SPK1N O Analog - Speaker 1
negative output Not connected
44 MIC1N I Analog - Microphone 1
negative input Not connected
45 SPK2P O Analog - Speaker 2
positive output Not connected
46 MIC2P I Analog - Microphone 2
positive input Not connected
47 SPK2N O Analog - Speaker 2
negative output Not connected
48 MIC2N I Analog - Microphone 2
negative input Not connected
49 BUZZER O Analog - Buzzer output Not connected
50 SIM_PRES I CMOS High
impedance
SIM Card Detect Tied to 2V8
51 GPIO3 or
CT109/DCD1
I/O
O
CMOS/CMOS 2X
(C1) or
CMOS2X (C1)
High
impedance
General Purpose
I/O or
Data Carrier
Detect (UART1)
Not connected
52 GPIO1
FLASH LED
I/O
O
CMOS/CMOS 2X
(C1) or
CMOS2X (C1)
High
impedance
General Purpose
I/O or
Flash LED
Not connected
53 GPIO4 I/O CMOS/CMOS 2X
(C1)
High
impedance
General Purpose
I/O Not connected
Wireless CPU Q24 Series
Technical Specifications
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Pin
Name I/O I/O type Reset state Description Dealing with
unused pins
54 GPIO2 or
CT125 / RI1
I/O
O
CMOS/CMOS 2X
(C1) or CMOS 2X
(C1)
High
impedance
General Purpose
I/O or
Ring Indicator
(UART1)
Not connected
55 +VBATT I Supply - Battery Input Must be used
56 VCC_RTC I/O Supply 2V8 RTC back-up
supply Not connected
57 +VBATT I Supply - Battery Input Must be used
58 +VBATT I Supply - Battery Input Must be used
59 +VBATT I Supply - Battery Input Must be used
60 +VBATT I Supply - Battery Input Must be used
Figure 14: Wireless CPU pin position (bottom view)
1
2
60
59
Wireless CPU Q24 Series
Technical Specifications
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4.2 I/O Circuit Diagram
The following drawings show the internal interface of the Wireless CPU Q24 Series.
The type indication per interface can be found in the previous chapters.
Type Circuit Type Circuit
(C1)
(C4)
(C2)
(C5)
(C3)
Figure 15: I/O Circuit Diagram
100K
GND
2V8
IN
100K
GND
2V8
IN
GND
2V8
IN
DIR
OUT
100K
GND
2V8
OUT
GND
2V8
IN
DIR
OUT
Wireless CPU Q24 Series
Environmental Specifications
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5 Environmental Specifications
The Wireless CPU Q24 Classic and Q24 Plus are compliant with the following
operating classes:
Condition Temperature range
Operating / Class A -20°C to +55°C for GSM 850 / 900
-10°C to +55°C for GSM 1800/1900
Storage -40°C to +85°C
The Wireless CPU Q24 Automotive and Q24 Extended are compliant with the
following operating classes:
Conditions Temperature range
Operating / Class A -20°C to +55°Cfor GSM 850 / 900
-10°C to +55°C for GSM 1800/1900
Operating / Class B -30°C to +75°C
Operating / Class C -40°C to + 85°C
Storage -40°C to + 85°C
Classification and Wireless CPU Q24 Series:
• Class A:
The Wireless CPU remains fully functional, meeting GSM performance criteria in
accordance with ETSI requirements, across the specified temperature range.
• Class B:
The Wireless CPU remains fully functional, across the specified temperature range.
Some GSM parameters may occasionally deviate from the ETSI specified
requirements and this deviation may not affect the ability of the Wireless CPU to
connect to the cellular network and fully functional, as it does within the Class A
range.
• Class C:
The functional requirements will not be fulfilled during external influence, but will
return to fully functional automatically, after the external influence has been removed.
Wireless CPU Q24 Series
Environmental Specifications
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5.1 Environmental Qualifications
For the Wireless CPU Q24 Classic, Q24 Plus, and Q24 Extended, applied
environmental qualifications are defined in the table below:
ENVIRONMENTAL CLASSES
TYPE OF TEST STANDARDS STORAGE TRANSPORTATION OPERATING (PORT USE)
Class 1.2 Class 2.3 Class 7.3
Cold IEC 68-2.1 -25° C 72 h -40° C 72 h -20° C (GSM900) 16 h
Ab test -10° C (GSM1800/1900) 16h
Dry heat IEC 68-2.2 +70° C 72 h +70° C 72 h +55° C 16 h
Bb test
Change of temperature IEC 68-2.14 -40° / +30° C 5 cycles -20° / +30° C (GSM900) 3 cycles
Na/Nb test t1 = 3 h -10° / +30° C (GSM1800/1900):
3 cycles t1 = 3 h
Damp heat IEC 68-2.30 +30° C 2 cycles +40° C 2 cycles +40° C 2 cycles
cyclic Db test 90% - 100% RH 90% - 100% RH 90% - 100% RH
variant 1 variant 1 variant 1
Damp heat IEC 68-2.56 +30° C 4 days +40° C 4 days +40° C 4 days
Cb test
Sinusoidal vibration IEC 68-2.6 5 - 62 Hz : 5 mm / s
Fc test 62 - 200Hz : 2 m / s2
3 x 5 sweep cycles
5 - 20 Hz : 0.96 m2 / s3 10 -12 Hz : 0.96 m2 / s3
Random vibration IEC 68-3.36 20 - 500Hz : - 3 dB / oct 12 - 150Hz : - 3 dB / oct
wide band Fdb test 3 x 10 min 3 x 30 min
Figure 16: Q24 Classic, Q24 Plus and Q24 Extended Environmental classes
For more details, refer to the document: "Environmental Control Plan" for Wireless
CPU Q24 Series [2]
Electro-Static Discharge (ESD):
According to the EN 61000-4-2 standard, the maximum ESD level supported by the
Wireless CPU series on contact discharges is ±1 kV on the 60-pin connector, ±2 kV
on the antenna connector, and ±4 kV on the SIM Card holder.
Wireless CPU Q24 Series
Environmental Specifications
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For the Wireless CPU Q24 Automotive, environmental qualification applied is defined
in table below:
Test Designation Standards Definition / Severities
Resistance to Heat IEC 60068-2-2 Temperature: +85°C
Duration: 504 h
Resistance to cold
test
IEC 60068-2-30
Db
Storage temperature: -40±2°C
Storage time: 72 h
Cooking Test - Temperature: +70 ±2°C
Duration: 100 days
Damp heat test IEC 60068-2-3
Storage temperature: +40±2°C
Storage humidity: 95±3%
Storage time: 21 days
Damp heat cycle test IEC 60068-2-30
Db
Upper temperature: +55±2°C
Number of cycles: 10
Temperature change IEC 60068-2-14
Nb
Low temperature: -40°±2°C
High temperature: +85±2°C
Total duration: 11 days
Thermal Shock IEC 60068-2-14
Low temperature: -40°±2°C
High temperature: +85±2°C
Total duration: 200 hours
Resistance
to sinusoidal vibration
IEC 60068-2-6 Fc
[10 Hz to 16 Hz]: ±5 mm (peak)
[16 Hz to 62 Hz]: 5 g (peak)
[62 Hz to 200Hz]: 3g (peak)
[200 Hz to 1000 Hz] 1g (peak)
Test duration: 20 cycles
Sweep directions: X / Y / Z
Resistance
to random vibration IEC 60068-2-64
Frequency range: 10 Hz - 2000 Hz
Spectrum level:
0.1 g2/Hz at 10 Hz
0.01 g2/Hz at 250 Hz
0.0005 g2/Hz at 1000 Hz
0.0005 g2/Hz at 2000 Hz
Duration: 16 h
Vibration axis: X / Y / Z
Resistance
to mechanical shock IEC 68-2-27 Peak acceleration: 30g / 100g / 200g
Direction: ±X, ±Y, ±Z
ESD Test IEC 1000-4-2
1 kV contact discharge on 60-pin
connector
2 kV contact discharge on RF connector
4kV contact discharge on SIM interface
Figure 17: Q24 Automotive environmental classes
For more details, refer to the document:
"Automotive Environmental Control Plan" for Wireless CPU Q24 Series [1]
5.1.1 Reflow Soldering:
The Wireless CPU Q24 Series do not support any reflow soldering.
Wireless CPU Q24 Series
Environmental Specifications
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5.2 Mechanical Specifications
5.2.1 Physical Characteristics
The Wireless CPU Q24NG sub-series have a complete self-contained shield.
• Dimensions : 58.4 x 32.2 x 3.9 mm external dimensions
(excluding shielding pins)
• Weight : <11 g (12g for Q24 Automotive)
5.2.2 Mechanical Drawings
The following page gives the mechanical specifications of the Wireless CPU Q24
Series.
Figure 18: Mechanical drawing.
(see following page)
Wireless CPU Q24 Series
Connector and Peripheral Device References
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6 Connector and Peripheral Device References
6.1 General Purpose Connector Data Sheet
The supplier for the GPC connector is KYOCERA/ELCO, available from
http://www.avxcorp.com.
Ref: 14 5087 060 930 861, or 19 5087 060 930 861.
6.2 SIM Card Reader
These SIM Card holder references may be used in customer application with Wireless
CPU Q24 version, not already equipped with a SIM Card holder.
• ITT CANNON CCM03 series (see http://www.ittcannon.com)
• AMPHENOL C707 series (see http://www.amphenol.com )
• JAE (see http://www.jae.com )
Drawer type:
• MOLEX 99228-0002 (connector) / MOLEX 91236-0002 (holder) (see
http://www.molex.com)
6.3 Microphone
Potential suppliers:
• HOSIDEN
• PANASONIC
• PEIKER
6.4 Speaker
Potential suppliers:
• SANYO
• HOSIDEN
• PRIMO
• PHILIPS
6.5 Antenna Cable
The following cable reference has been certified for mounting on the Wireless CPU
Q24 Series:
• RG178
Wireless CPU Q24 Series
Connector and Peripheral Device References
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6.6 RF board-to-board Connector
The supplier for the IMP connector is Radiall (http://www.radiall.com) with the
following references:
• R107 064 900.
• R107 064 920.
The supplier for the MMS connector is Radiall (http://www.radiall.com)
6.7 GSM Antenna
GSM antenna and support for antenna adaptation may be obtained from the
manufacturers such as:
• ALLGON (http://www.allgon.com)
• HIRSCHMANN (http://www.hirschmann.com)
Wireless CPU Q24 Series
Appendix
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7 Appendix
7.1 Standards and Recommendations
GSM ETSI, 3GPP, GCF, and NAPRD03 recommendations for Phase II.
Specification Reference Title
3GPP TS 45.005 v5.5.0
(2002-08) Release 5
Technical Specification Group GSM/EDGE. Radio
Access Network; Radio transmission and reception
GSM 02.07 V8.0.0
(1999-07)
Digital cellular telecommunications system (Phase 2+);
Mobile Stations (MS) features (GSM 02.07 version
8.0.0 Release 1999)
GSM 02.60 V8.1.0
(1999-07)
Digital cellular telecommunications system (Phase 2+);
General Packet Radio Service (GPRS); Service
description, Stage 1 (GSM 02.60 version 8.1.0 Release
1999)
GSM 03.60 V7.9.0
(2002-09)
Technical Specification Group Services and System
Aspects;
Digital cellular telecommunications system (Phase 2+);
General Packet Radio Service (GPRS); Service
description; Stage 2 (Release 1998)
3GPP TS 43.064 V5.0.0
(2002-04)
Technical Specification Group GERAN; Digital cellular
telecommunications system (Phase 2+); General
Packet Radio Service (GPRS); Overall description of the
GPRS radio interface; Stage 2 (Release 5)
3GPP TS 03.22 V8.7.0
(2002-08)
Technical Specification Group GSM/EDGE. Radio
Access Network; Functions related to Mobile Station
(MS) in idle mode and group receive mode; (Release
1999)
3GPP TS 03.40 V7.5.0
(2001-12)
Technical Specification Group Terminals;
Technical realization of the Short Message Service
(SMS)
(Release 1998)
3GPP TS 03.41 V7.4.0
(2000-09)
Technical Specification Group Terminals; Technical
realization of Cell Broadcast Service (CBS) (Release
1998)
ETSI EN 300 903 V8.1.1
(2000-11)
Digital cellular telecommunications system (Phase 2+);
Transmission planning aspects of the speech service in
the GSM
Public Land Mobile Network (PLMN) system (GSM
03.50 version 8.1.1 Release 1999)
3GPP TS 04.06 V8.2.1
(2002-05)
Technical Specification Group GSM/EDGE Radio
Access Network; Mobile Station - Base Station System
(MS - BSS) interface; Data Link (DL) layer specification
(Release 1999)
Wireless CPU Q24 Series
Appendix
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Specification Reference Title
3GPP TS 04.08 V7.18.0
(2002-09)
Technical Specification Group Core Network;
Digital cellular telecommunications system (Phase 2+);
Mobile radio interface layer 3 specification (Release
1998)
3GPP TS 04.10 V7.1.0
(2001-12)
Technical Specification Group Core Networks;
Mobile radio interface layer 3 Supplementary services
specification; General aspects (Release 1998)
3GPP TS 04.11 V7.1.0
(2000-09)
Technical Specification Group Core Network; Digital
cellular telecommunications system (Phase 2+);
Point-to-Point (PP) Short Message Service (SMS)
support on mobile radio interface
(Release 1998)
3GPP TS 45.005 v5.5.0
(2002-08)
Technical Specification Group GSM/EDGE. Radio
Access Network; Radio transmission and reception
(Release 5)
3GPP TS 45.008 V5.8.0
(2002-08)
Technical Specification Group GSM/EDGE
Radio Access Network; Radio subsystem link control
(Release 5)
3GPP TS 45.010 V5.1.0
(2002-08)
Technical Specification Group GSM/EDGE
Radio Access Network; Radio subsystem
synchronization (Release 5)
3GPP TS 46.010 V5.0.0
(2002-06)
Technical Specification Group Services and System
Aspects;
Full rate speech; Transcoding (Release 5)
3GPP TS 46.011 V5.0.0
(2002-06)
Technical Specification Group Services and System
Aspects;
Full rate speech; Substitution and muting of lost
frames for full rate speech channels (Release 5)
3GPP TS 46.012 V5.0.0
(2002-06)
Technical Specification Group Services and System
Aspects;
Full rate speech; Comfort noise aspect for full rate
speech traffic channels (Release 5)
3GPP TS 46.031 V5.0.0
(2002-06)
Technical Specification Group Services and System
Aspects;
Full rate speech; Discontinuous Transmission (DTX) for
full rate speech traffic channels (Release 5)
3GPP TS 46.032 V5.0.0
(2002-06)
Technical Specification Group Services and System
Aspects;
Full rate speech; Voice Activity Detector (VAD) for full
rate speech traffic channels (Release 5)
TS 100 913V8.0.0
(1999-08)
Digital cellular telecommunications system (Phase 2+);
General on Terminal Adaptation Functions (TAF) for
Mobile Stations (MS) (GSM 07.01 version 8.0.0
Release 1999)
Wireless CPU Q24 Series
Appendix
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Specification Reference Title
GSM 09.07 V8.0.0
(1999-08)
Digital cellular telecommunications system (Phase 2+);
General requirements on inter-working between the
Public Land Mobile Network (PLMN) and the
Integrated Services Digital Network (ISDN) or Public
Switched Telephone Network (PSTN) (GSM 09.07
version 8.0.0 Release 1999)
3GPP TS 51.010-1 v7.3.1
(2006-10)
Technical Specification Group GSM/EDGE ; Radio
Access Network ;Digital cellular telecommunications
system (Phase 2+);Mobile Station (MS) conformance
specification; Part 1: Conformance specification
(Release 7)
3GPP TS 51.011 V5.0.0
(2001-12)
Technical Specification Group Terminals; Specification
of the Subscriber Identity Module - Mobile Equipment
(SIM - ME) interface (Release 5)
ETS 300 641
(1998-03)
Digital cellular telecommunications system (Phase 2);
Specification of the 3 Volt Subscriber Identity Module -
Mobile Equipment (SIM-ME) interface
(GSM 11.12 version 4.3.1)
GCF-CC V3.23.1
(2006-07) Global Certification Forum – Certification criteria
NAPRD03 v3.8.1
(2006-08)
North America Permanent
Reference Document for PTCRB tests
The Wireless CPU Quik Q24 series connected to a development kit board application
is certified to be in accordance with the following Rules and Regulations of the
Federal Communications Commission (FCC).
Power listed on the Gant is conducted for Part 22 and conducted for Part 24.
This device contains EGSM/GPRS Class 10 functions in the 900 and 1800MHz Band,
which are not operational in U.S. Territories.
This device can be used only for mobile and fixed applications. The antenna(s) used
for this transmitter must be installed at a distance of minimum 20 cm from all
persons and must not be co-located or operated with any other antenna or
transmitter.
Users and installers must be provided with antenna installation instructions and
transmitter operating conditions for satisfying RF exposure compliance.
Antennas used for this OEM module must not exceed 1.4 dBi gain for GSM 850 MHz
and 7 dBi for GSM 1900 MHz for fixed operating configurations. For mobile
operations the gain must not exceed 1.4 dBi for GSM 850 MHz and 3dBi for GSM
1900 MHz. This device is approved as a module to be installed in other devices.
Installed in portable devices, the RF exposure condition requires a separate
mandatory equipment authorization for the final device.
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The license module will have a FCC ID label on the module itself. The FCC ID label
must be visible through a window or it must be visible when an access panel, door or
cover is easily removed.
If not, a second label must be placed on the outside of the device that contains one of
the following text:
FCC ID: O9EQ24CL001
FCC ID: O9EQ24CL003
FCC ID: O9EQ24PL001
FCC ID: O9EQ24PL003
FCC ID: O9EQ24PL005
FCC ID: O9EQ24PL006
FCC ID: O9EQ24AU001
FCC ID: O9EQ24AU002
FCC ID: O9EQ24EX001
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
o This device may not cause harmful interference.
o This device must accept any interference received, including interference
that may cause undesired operation.
7.2 Safety Recommendations (for Information only)
Caution:
For the efficient and safe operation of your GSM applications based on the Wireless
CPU Q24 Series.
Please read this information carefully.
7.2.1 RF safety
7.2.1.1 General
Your GSM terminal is based on the GSM standard for cellular technology. The GSM
standard is spread all over the world. It covers Europe, Asia and some parts of
America and Africa. This is the most used telecommunication standard.
Your GSM terminal is actually a low power radio transmitter and receiver. It sends
out as well as receives radio frequency energy. When you use your GSM application,
the cellular system which handles your calls controls both the radio frequency and
the power level of your cellular modem.
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prior written agreement.
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7.2.1.2 Exposure to RF Energy
There has been some public concern on possible health effects of using GSM
terminals. Although research on health effects from RF energy has focused on the
current RF technology for many years, scientists have begun research regarding
newer radio technologies, such as GSM. After existing research had been reviewed,
and after compliance to all applicable safety standards had been tested, it has been
concluded that the product was safe to use.
If you are concerned about exposure to RF energy, there are things you can do to
minimize the exposure. Obviously, limiting the duration of your calls will reduce your
exposure to RF energy. In addition, you can reduce RF exposure by operating your
cellular terminal efficiently by following the guidelines given in the sections below.
7.2.1.3 Efficient Terminal Operation
For your GSM terminal to operate at the lowest power level, consistent with
satisfactory call quality:
• If your terminal has an extendable antenna, extend it fully. Some models allow
you to place a call with the antenna retracted. However your GSM terminal
operates more efficiently with the antenna when it is fully extended.
• Do not hold the antenna when the terminal is « IN USE ». Holding the antenna
affects call quality and may cause the modem to operate at a higher power level
than needed.
7.2.1.4 Antenna Care and Replacement
• Do not use the GSM terminal with a damaged antenna. If a damaged antenna
comes into contact with the skin, a minor burn may result. Replace the damaged
antenna immediately. You may repair antenna to yourself by following the
instruction manual provided to you. If so, use only a manufacturer-approved
antenna. Otherwise, have your antenna repaired by a qualified technician.
• Buy or replace the antenna only from the approved suppliers list. Using of
unauthorized antennas, modifications or attachments could damage the terminal
and may violate local RF emission regulations or invalidate type approval.
7.2.2 General safety
7.2.2.1 Driving
Check with the laws and regulations regarding the use of cellular devices in the area
where you have to drive, as you always have to comply with them. When using your
GSM terminal while driving, please:
• give full attention to driving,
• pull-off the road and park before making or answering a call, if driving conditions
so require.
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7.2.2.2 Electronic Devices
Most electronic equipments, for example in hospitals and motor vehicles are shielded
from RF energy. However, RF energy may affect some improperly shielded electronic
equipment.
7.2.2.3 Vehicle Electronic Equipment
Check with your vehicle manufacturer/representative to determine if any on-board
electronic equipment is adequately shielded from RF energy.
7.2.2.4 Medical Electronic Equipment
Consult the manufacturer of any personal medical devices (such as pacemakers,
hearing aids, etc) to determine if they are adequately shielded from external RF
energy.
Turn your terminal OFF in health care facilities when any regulations posted in the
area instruct you to do so. Hospitals or health care facilities may be using RF
monitoring equipment.
7.2.2.5 Aircraft
Turn your terminal OFF before boarding any aircraft.
• Use it on the ground only with crew permission.
• Do not use it in the air.
To prevent possible interference with aircraft systems, Federal Aviation
Administration (FAA) regulations require you should have prior permission from crew
members, to use your terminal while the aircraft is on the ground. In order to prevent
interference with cellular systems, local RF regulations prohibit using your modem
while airborne.
7.2.2.6 Children
Do not allow children to play with your GSM terminal. It is not a toy. Children could
hurt themselves or others (by poking themselves or others in the eye with the
antenna, for example). Children could damage the modem, or make calls that increase
your modem bills.
7.2.2.7 Blasting Areas
To avoid interfering with blasting operations, turn your unit OFF when you are in a
« blasting area » or in areas posted: « turn off two-way radio ». Construction crew
often uses remote control RF devices to set off explosives.
7.2.2.8 Potentially Explosive Atmospheres
Turn your terminal OFF in any area with a potentially explosive atmosphere. Though
it is rare, but your modem or its accessories could generate sparks. Sparks in such
areas could cause an explosion or fire resulting in bodily injuries or even death.
Areas with a potentially explosive atmosphere are often, but not always, clearly
marked. They include fuelling areas such as petrol stations; below decks on boats;
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fuel or chemical transfer or storage facilities; and areas where the air contains
chemicals or particles, such as grain, dust, or metal powders.
Do not transport or store flammable gas, liquid, or explosives, in the compartment of
your vehicle, which contains your terminal or accessories.
Before using your terminal in a vehicle powered by liquefied petroleum gas (such as
propane or butane), ensure that the vehicle complies with the relevant fire and safety
regulations of the country in which the vehicle is used.
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- New Territories, Hong Kong