Home
Sierra Wireless
Control Unit
WISMO228
Sierra Wireless WISMO228 Product Technical Specification & Customer Design Guidelines
116 pages
Manual
Specs
Ask a question
To Next Page
To Next Page
Loading...
WA_DEV_W228_PTS_00
2
001
August 26, 2009
WISMO228 WIreless Standard MOdem
Product Technical Specification &
Customer Design Guidelines
2
Table of Contents
Default Chapter
5
Table of Contents
5
List of Figures
9
2 General Description
19
General Information
19
Overall Dimensions
19
Environment and Mechanics
19
Complete Shielding
19
Rohs Directive Compliant
19
GSM/GPRS Features
19
Interfaces
20
Firmware
20
Connection Interfaces
20
Functional Description
21
RF Functionalities
21
Frequency Range for Tx and Rx
21
Baseband Functionalities
22
3 Interfaces
23
General Interfaces
23
Power Supply
27
Power Supply Description
27
Input Power Supply Voltage
27
Application
28
Electrical Characteristics
28
Pin Description
28
Power Supply Pin Description
28
Power Consumption
30
Various Operating Modes
30
Power Consumption Values
31
WISMO228 Power Consumption
32
Connected Mode Current Waveform
34
Consumption Waveform Samples
34
Idle Mode Page 2 Current Waveform
35
Transfer Mode Class 10 Current Waveform
35
Idle Mode Page 9 Current Waveform
36
Recommendations for Less Consumption
36
Consumption/Software Driver Recommendations
36
Electrical Information for Digital I/O
37
Electrical Characteristics of Digital I/Os
37
SPI Bus for Debug Trace ONLY
38
Pin Description
38
SPI Waveforms
38
Main Serial Link Pin Description
41
5-Wire Serial Interface Hardware Design
42
Application
45
V24/CMOS Possible Design
46
Pin Description
41
Example of V24/CMOS Serial Link Implementation for a 2-Wire UART
46
Example of V24/CMOS Serial Link Implementation for a 4-Wire UART
46
Example of V24/CMOS Serial Link Implementation for a 5-Wire UART
47
SIM Interface
48
Electrical Characteristics
48
Electrical Characteristics of the SIM Interface
48
Pin Description
49
Application
50
SIM Socket Connection
50
General Purpose Input/Output
52
Pin Description
52
Analog to Digital Converter
53
Electrical Characteristics
53
Pin Description
53
Analog to Digital Converter Pin Description
53
Analog Audio Interface
54
Electrical Characteristics of the ADC Interface
53
Microphone Features
54
Electrical Characteristics
55
Electrical Characteristics of MIC
55
Electrical Characteristics
56
Speaker Features
56
Electrical Characteristics of SPK
56
Application
57
Microphone
57
Pin Description
57
Analog Audio Interface Pin Description
57
Example of a Differential MIC Connection with an LC Filter
58
Example of a Differential MIC Connection Without an LC Filter
58
Example of a Single-Ended MIC Connection with an LC Filter
59
Speaker SPKP Ad SPKN
60
Example of a Single-Ended MIC Connection Without an LC Filter
60
Design Recommendations
61
General
61
Example of a Differential Speaker Connection
61
Example of a Single-Ended Speaker Connection
61
Recommended Filtering Components
62
Recommended Microphone Characteristics
62
Recommended Speaker Characteristics
62
Audio Track and PCB Layout Recommendation
63
Differential Audio Connection
64
Pulse-Width Modulators (Pwms)
66
Electrical Characteristics
66
Electrical Characteristics of the PWM Interface
66
Application
67
Pin Description
66
Example of an LED Driven by the PWM0 or PWM1 Output
67
BUZZER Output
68
Electrical Characteristics
68
Electrical Characteristics of the BUZZER Signal
68
Application
69
Pin Description
69
Low Filter Calculations
70
Recommended Characteristics
70
Example of an LED Driven by the BUZZER Output
71
ON/~OFF Signal
72
Electrical Characteristics
72
Electrical Characteristics of the ON/~OFF Signal
72
Application
73
Power on
73
Pin Description
72
Power-ON Sequence
73
Power off
74
WISMO_READY Indication
76
Electrical Characteristics
76
Electrical Characteristics of the WISMO_READY Indication
76
Pin Description
76
WISMO_READY Indication Pin Description
76
Application
77
Electrical Characteristics
77
Pin Description
77
BAT-RTC (Backup Battery)
78
Application
78
Electrical Characteristics
78
Electrical Characteristics of the BAT-RTC Signal
78
Non-Rechargeable Battery
79
Super Capacitor
79
Pin Description
78
RTC Supplied by a Gold Capacitor
79
RTC Supplied by a Non Rechargeable Battery
79
Rechargeable Battery Cell
80
RTC Supplied by a Rechargeable Battery Cell
80
TX_CTRL Signal for TX Burst Indication
81
Electrical Characteristics
81
TX_CTRL Status
81
Application
82
Pin Description
82
Reset
83
Electrical Characteristics
83
Electrical Characteristics of the Reset Signal
83
Application
84
Pin Description
84
Reset Timing
83
Example of ~RESET Pin Connection with a Push Button Configuration
84
Example of ~RESET Pin Connection with a Transistor Configuration
84
Reset Commands
85
RF Interface
86
RF Connection
86
RF Performances
87
Antenna Specifications
87
4 Consumption Measurement Procedure
89
Hardware Configuration
89
Equipments
89
WISMO218 Development Kit
91
Socket-Up Board
92
SIM Cards
92
Software Configuration
92
WISMO228 Configuration
92
Equipment Configuration
93
Template
94
Castellation Pins
97
Pin Configuration
97
Pin Description
98
Recommended Connection When Not Used
99
5 Technical Specifications
97
PCB Specifications for the Application Board
104
Environmental Specifications
104
Function Status Classification
104
Class a
104
Operating Class Temperature Range
104
Class B
105
Mechanical Specifications
106
Physical Characteristics
106
Recommended PCB Landing Pattern
106
WISMO228 Dimensions
106
6 Recommended Peripheral Devices
107
General Purpose Connector
107
SIM Card Reader
107
Microphone
107
Speaker
107
Antenna Cable
108
GSM Antenna
108
7 Noises and Design
109
EMC Recommendations
109
Power Supply
109
Overvoltage
109
8 Appendix
110
Standards and Recommendations
110
Safety Recommendations (for Information Only)
113
RF Safety
113
General Safety
114
Other manuals for Sierra Wireless WISMO228
At Command Manual
215 pages
Need help?
Do you have a question about the Sierra Wireless WISMO228 and is the answer not in the manual?
Ask a question
Sierra Wireless WISMO228 Specifications
General
Type
GSM/GPRS Module
Technology
GSM/GPRS
Frequency Bands / Frequencies
GSM 850/900/1800/1900 MHz
Data Transfer
GPRS Class 10
Interface
UART, GPIO
Related product manuals
AirPrime WS Series
215 pages
Sierra Wireless AirPrime SL6087
30 pages
Sierra Wireless AirPrime EM7690
23 pages
Sierra Wireless AirPrime AR7584
29 pages
Sierra Wireless AirPrime EM7511
19 pages