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LE920-EU
User Manuals: Telit Wireless Solutions LE920-EU Module
Manuals and User Guides for Telit Wireless Solutions LE920-EU Module. We have
1
Telit Wireless Solutions LE920-EU Module manual available for free PDF download: Hardware User's Manual
Telit Wireless Solutions LE920-EU Hardware User's Manual (76 pages)
Rugged LGA Automotive Smart Module
Brand:
Telit Wireless Solutions
| Category:
GPS
| Size: 1 MB
Table of Contents
Table of Contents
5
1 Introduction
9
Scope
9
Audience
9
Contact Information, Support
9
Document Organization
10
Text Conventions
11
Related Documents
11
2 General Product Description
12
Overview
12
LE920 Mechanical Dimensions
13
Weight
13
Environmental Requirements
14
Temperature Range
14
Rohs Compliance
14
Operating Frequency
15
Wcdma1700 - B4
15
LE920-NA Only)
15
Tx: 1312 ~ 1513
15
Rx: 9662 ~ 9938
15
400 Mhz
15
3 LE920 Module Connections
17
Pin-Out
17
LGA Pads Layout
24
4 Hardware Commands
25
Turning on the LE920
25
Initialization and Activation State
25
Turning off the LE920
27
Shutdown by Software Command
28
Hardware Shutdown
29
Hardware Unconditional Restart
30
Hardware Unconditional Shutdown
31
Summary of Turning on and off the Module
32
5 Power Supply
33
Power Supply Requirements
33
General Design Rules
35
Electrical Design Guidelines
35
Input Source Power Supply Design Guidelines
35
Input Source Power Supply Design Guidelines
36
Battery Source Power Supply Design Guidelines
38
Thermal Design Guidelines
39
Power Supply PCB Layout Guidelines
40
6 Antenna(S)
42
GSM/WCDMA/LTE Antenna Requirements
42
GSM/WCDMA/LTE Antenna - PCB Line Guidelines
43
GSM/WCDMA/LTE Antenna - Installation Guidelines
44
Antenna Diversity Requirements
44
GPS/GNSS Antenna Requirements
45
Combined GPS/GNSS Antenna
45
Linear and Patch GPS/GNSS Antenna
46
Front End Design Considerations
46
GPS/GNSS Antenna - PCB Line Guidelines
46
GPS/GNSS Antenna - Installation Guidelines
47
7 Logic Level Specifications
48
8 USB Port
49
9 Serial Ports
50
Modem Serial Port 1
51
Modem Serial Port 2
52
RS232 Level Translation
52
10 Audio Section Overview
54
Digital Audio
54
11 General Purpose I/O
56
Logic Level Specifications
57
Using a GPIO Pad as Input
57
Using a GPIO Pad as Output
58
Using the Temperature Monitor Function
59
Short Description
59
Indication of Network Service Availability
59
RTC Bypass out
60
VAUX Power Output
60
12 ADC Section
61
ADC Converter
61
Description
61
Using ADC Converter
61
13 Mounting the Module on Your Board
62
General
62
Finishing & Dimensions
62
Recommended Foot Print for the Application
63
Stencil
64
PCB Pad Design
64
Recommendations for PCB Pad Dimensions (MM)
64
Solder Paste
66
Solder Reflow
66
14 Application Guide
68
Debug of the LE920 in Production
68
Bypass Capacitor on Power Supplies
69
SIM Interface
69
EMC Recommendations (TBD)
70
Download and Debug Port
71
15 Packing System
72
Tray Drawing
73
Moisture Sensibility
74
16 Safety Recommendations
75
17 Document History
76
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