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MAX7-NEO7_HardwareIntegrationManual(MAX7-NEO7_HardwareIntegrationManual).pdf
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Preface
Contents
1 Quick reference
2 Hardware description
2.1 Overview
2.2 Architecture
2.3 Operating modes
2.3.1 Continuous Mode
2.3.2 Power Save Mode
2.4 Configuration
2.4.1 Electrical Programmable Fuse (eFuse)
2.5 Connecting power
2.5.1 VCC: Main supply voltage
2.5.2 VCC_IO: IO supply voltage (MAX-7)
2.5.3 V_BCKP: Backup supply voltage
2.5.3.1 RTC derived from the system clock; “Single Crystal” feature (MAX-7C)
2.5.4 VDD_USB: USB interface power supply (NEO-7)
2.5.5 VCC_RF: Output voltage RF section
2.5.6 V_ANT: Antenna supply (MAX-7W)
2.6 Interfaces
2.6.1 UART
2.6.2 USB
2.6.2.1 USB external components
2.6.3 Display Data Channel (DDC)
2.6.4 SPI (NEO-7)
2.7 I/O pins
2.7.1 RESET_N: Reset input
2.7.2 EXTINT: External interrupt
2.7.3 D_SEL: Interface select (NEO-7)
2.7.4 TX Ready signal
2.7.5 ANT_ON: Antenna ON (LNA enable) (NEO-7N, MAX-7Q, MAX-7C)
2.7.6 Antenna Short circuit detection (MAX-7W)
2.7.7 Antenna open circuit detection
2.7.7.1 Antenna open circuit detection (MAX-7)
2.7.8 Time pulse
3 Design
3.1 Design checklist
3.1.1 Schematic checklist
3.1.2 Layout checklist
3.1.3 Antenna checklist
3.2 Design considerations for minimal designs
3.2.1 Minimal design (NEO-7N)
3.2.2 Minimal design (MAX-7Q)
3.3 Layout
3.3.1 Footprint and paste mask
3.3.2 Placement
3.3.3 Antenna connection and ground plane design
3.3.4 General design recommendations:
3.3.5 Antenna micro strip
3.4 Antenna and Antenna supervision
3.4.1 Antenna design with passive antenna
3.4.1.1 Minimal setup with a good patch antenna
3.4.1.2 Setup for best performance with passive antenna
3.4.2 Active antenna design without antenna supervisor (NEO-7N/7M/7P, MAX-7C/7Q)
3.4.2.1 Active antenna design, VCC_RF used to supply active antenna
3.4.2.2 Active antenna design powered from external supply
3.4.3 Antenna design with active antenna using antenna supervisor (MAX-7W)
3.4.3.1 Status reporting
3.4.3.2 Module design with active antenna, short circuit protection / detection (MAX-7W)
3.4.3.3 Antenna supervision open circuit detection (OCD) (MAX-7W)
3.4.3.4 External active antenna supervisor using customer uP (NEO-7N, MAX-7Q, MAX-7C)
3.4.3.5 External active antenna control (NEO-7N, MAX-7Q, MAX-7C)
3.4.4 Design with GLONASS / GPS active antenna
3.4.5 Design with GLONASS / GPS passive antenna
3.5 Recommended parts
3.5.1 Recommended GPS & GLONASS active antenna (A1)
3.5.2 Recommended GPS & GLONASS passive patch antenna
3.5.3 Recommended GPS & GLONASS passive chip antenna
4 Migration to u-blox-7 modules
4.1 Migrating u-blox 6 designs to a u-blox 7 module
4.2 Hardware migration
4.2.1 Hardware compatibility:
4.2.2 Hardware migration NEO-6 -> NEO-7
4.2.3 Hardware migration MAX-6 -> MAX-7
4.3 Software migration
4.3.1 Software compatibility
4.3.2 Messages no longer supported
5 Product handling
5.1 Packaging, shipping, storage and moisture preconditioning
5.1.1 Population of Modules
5.2 Soldering
5.2.1 Soldering paste
5.2.2 Reflow soldering
5.2.3 Optical inspection
5.2.4 Cleaning
5.2.5 Repeated reflow soldering
5.2.6 Wave soldering
5.2.7 Hand soldering
5.2.8 Rework
5.2.9 Conformal coating
5.2.10 Casting
5.2.11 Grounding metal covers
5.2.12 Use of ultrasonic processes
5.3 EOS/ESD/EMI precautions
5.3.1 /Electrostatic discharge (ESD)
5.3.2 ESD handling precautions
5.3.3 ESD protection measures
5.3.4 Electrical Overstress (EOS)
5.3.5 EOS protection measures
5.3.6 Electromagnetic interference (EMI)
5.3.7 Applications with wireless modules LEON / LISA
5.3.7.1 Isolation between GPS and GSM antenna
5.3.7.2 Increasing jamming immunity
5.3.7.3 In-band jamming
5.3.7.4 Out-band jamming
6 Product testing
6.1 u-blox in-series production test
6.2 Test parameters for OEM manufacturer
6.3 System sensitivity test
6.3.1 Guidelines for sensitivity tests
6.3.2 ‘Go/No go’ tests for integrated devices
7 Appendix
A Abbreviations
Related documents
Revision history
Contact
MAX-7 / NEO-7
u-blox 7 GNSS modules
Hardware Integration Manual
Abstract
This document describes the features and specifications of the cost
effective and high-performance MAX-7 and NEO-7
GPS/GLONASS/QZSS modules featuring the u-blox 7 positioning
engine.
These compact, easy to integrate stand-alone GNSS receiver
modules combine exceptional GNSS performance with highly
flexible power, design, and connectivity options. Their compact
form factors and SMT pads allow fully automated assembly with
standard pick & place and reflow soldering equipment for cost-
efficient, high-volume production enabling short time-to-market.
www.u-blox.com
UBX-13003704 - R07
MAX-7 / NEO-7 - Hardware Integration Manual
Document Information
Title
Subtitle
MAX-7 / NEO-7
u-blox 7 GNSS modules
Document type
Hardware Integration Manual
Document number
UBX-13003704
Revision and date
R07
20-Jan-2014
Document status
Early Production Information
Document status explanation
Objective Specification
Document contains target values. Revised and supplementary data will be published later.
Advance Information
Document contains data based on early testing. Revised and supplementary data will be published later.
Early Production Information
Document contains data from product verification. Revised and supplementary data may be published later.
Production Information
Document contains the final product specification.
This document applies to the following products:
Type number
ROM/FLASH version
PCN reference
All
All
All
All
All
All
ROM1.00
ROM1.00
ROM1.00
FLASH1.00
ROM1.00
FLASH1.01
Name
MAX-7C-0
MAX-7Q-0
MAX-7W-0
NEO-7N-0
NEO-7M-0
NEO-7P-0
u-blox reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein
may in whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this
document or any part thereof without the express permission of u-blox is strictly prohibited.
The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either
express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular
purpose of the information. This document may be revised by u-blox at any time. For most recent documents, visit www.u-blox.com.
Copyright © 2014, u-blox AG.
u-blox® is a registered trademark of u-blox Holding AG in the EU and other countries. ARM® is the registered trademark of ARM Limited in
the EU and other countries.
UBX-13003704 - R07
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MAX-7 / NEO-7 - Hardware Integration Manual
Preface
u-blox Technical Documentation
As part of our commitment to customer support, u-blox maintains an extensive volume of technical
documentation for our products. In addition to our product-specific technical data sheets, the following manuals
are available to assist u-blox customers in product design and development.
• GPS Compendium: This document, also known as the GPS book, provides a wealth of information
regarding generic questions about GPS system functionalities and technology.
• Receiver Description including Protocol Specification: Messages, configuration and functionalities of
the u-blox 7 software releases and positioning modules are explained in this document.
• Hardware Integration Manuals: This manual provides hardware design instructions and information on
how to set up production and final product tests.
• Application Note: These documents provide general design instructions and information that applies to all
u-blox GPS/GNSS positioning modules.
How to use this Manual
The MAX-7 and NEO-7 Hardware Integration Manual provides the necessary information to successfully design-
in and configure these u-blox 7-based positioning modules. This manual has a modular structure. It is not
necessary to read it from beginning to end.
The following symbols are used to highlight important information within the manual:
An index finger points out key information pertaining to module integration and performance.
A warning symbol indicates actions that could negatively influence or damage the module.
Questions
If you have any questions about u-blox 7 Hardware Integration, please:
• Read this manual carefully.
• Contact our information service on the homepage http://www.u-blox.com
• Read the questions and answers on our FAQ database on the homepage http://www.u-blox.com
•
Worldwide Web
Our website (www.u-blox.com) is a rich pool of information. Product information, technical documents and
helpful FAQ are available 24h a day.
Technical Support
By E-mail
If you have technical problems or cannot find the required information in the provided documents, contact the
closest Technical Support office. To ensure that we process your request as soon as possible, use our service pool
email addresses rather than personal staff email addresses. Contact details are at the end of the document.
Helpful Information when Contacting Technical Support
When contacting Technical Support please have the following information ready:
• Receiver type (e.g. NEO-7N-0-000), Datacode (e.g. 172100.0100.000) and firmware version (e.g. ROM1.0)
• Receiver configuration
• Clear description of your question or the problem together with a u-center logfile
• A short description of the application
• Your complete contact details
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Preface
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MAX-7 / NEO-7 - Hardware Integration Manual
Contents
Preface ................................................................................................................................ 3
Contents .............................................................................................................................. 4
1 Quick reference ............................................................................................................ 7
2.3.1
2.3.2
2.4.1
2.4
2.5
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.5.6
2 Hardware description .................................................................................................. 8
2.1 Overview .............................................................................................................................................. 8
2.2
Architecture .......................................................................................................................................... 8
2.3 Operating modes .................................................................................................................................. 8
Continuous Mode ......................................................................................................................... 8
Power Save Mode ......................................................................................................................... 9
Configuration ....................................................................................................................................... 9
Electrical Programmable Fuse (eFuse) ............................................................................................. 9
Connecting power .............................................................................................................................. 10
VCC: Main supply voltage ........................................................................................................... 10
VCC_IO: IO supply voltage (MAX-7) ............................................................................................ 10
V_BCKP: Backup supply voltage .................................................................................................. 10
VDD_USB: USB interface power supply (NEO-7) ........................................................................... 11
VCC_RF: Output voltage RF section ............................................................................................. 11
V_ANT: Antenna supply (MAX-7W) ............................................................................................. 11
Interfaces ............................................................................................................................................ 11
UART ........................................................................................................................................... 11
USB ............................................................................................................................................. 11
Display Data Channel (DDC) ........................................................................................................ 12
SPI (NEO-7) .................................................................................................................................. 13
I/O pins ............................................................................................................................................... 13
RESET_N: Reset input .................................................................................................................. 13
EXTINT: External interrupt ............................................................................................................ 13
D_SEL: Interface select (NEO-7) .................................................................................................... 13
TX Ready signal ........................................................................................................................... 14
ANT_ON: Antenna ON (LNA enable) (NEO-7N, MAX-7Q, MAX-7C) ............................................. 14
Antenna Short circuit detection (MAX-7W) ................................................................................. 14
Antenna open circuit detection ................................................................................................... 14
Time pulse ................................................................................................................................... 14
2.7.1
2.7.2
2.7.3
2.7.4
2.7.5
2.7.6
2.7.7
2.7.8
2.6.1
2.6.2
2.6.3
2.6.4
2.6
2.7
3 Design ......................................................................................................................... 15
Design checklist .................................................................................................................................. 15
Schematic checklist ..................................................................................................................... 15
3.1.1
3.1
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3.2
3.3
3.1.2
3.1.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
Layout checklist ........................................................................................................................... 15
Antenna checklist ........................................................................................................................ 16
Design considerations for minimal designs .......................................................................................... 16
3.2.1 Minimal design (NEO-7N) ............................................................................................................ 17
3.2.2 Minimal design (MAX-7Q) ........................................................................................................... 18
Layout ................................................................................................................................................ 19
Footprint and paste mask ............................................................................................................ 19
Placement ................................................................................................................................... 20
Antenna connection and ground plane design ............................................................................ 20
General design recommendations: .............................................................................................. 21
Antenna micro strip ..................................................................................................................... 22
Antenna and Antenna supervision ...................................................................................................... 23
Antenna design with passive antenna ......................................................................................... 23
Active antenna design without antenna supervisor (NEO-7N/7M/7P, MAX-7C/7Q) ...................... 24
Antenna design with active antenna using antenna supervisor (MAX-7W) .................................. 25
Design with GLONASS / GPS active antenna ................................................................................ 30
Design with GLONASS / GPS passive antenna .............................................................................. 31
Recommended parts ........................................................................................................................... 32
Recommended GPS & GLONASS active antenna (A1) .................................................................. 33
Recommended GPS & GLONASS passive patch antenna .............................................................. 33
Recommended GPS & GLONASS passive chip antenna ................................................................ 33
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.5.1
3.5.2
3.5.3
3.4
3.5
4 Migration to u-blox-7 modules ................................................................................. 34
4.1 Migrating u-blox 6 designs to a u-blox 7 module ................................................................................ 34
Hardware migration............................................................................................................................ 34
4.2
Hardware compatibility: .............................................................................................................. 34
Hardware migration NEO-6 -> NEO-7 .......................................................................................... 35
Hardware migration MAX-6 -> MAX-7 ........................................................................................ 36
Software migration ............................................................................................................................. 37
4.3.1
Software compatibility ................................................................................................................. 37
4.3.2 Messages no longer supported .................................................................................................... 37
4.2.1
4.2.2
4.2.3
4.3
5.1
5.2
5.1.1
5 Product handling ........................................................................................................ 38
Packaging, shipping, storage and moisture preconditioning ............................................................... 38
Population of Modules ................................................................................................................ 38
Soldering ............................................................................................................................................ 38
Soldering paste............................................................................................................................ 38
5.2.1
Reflow soldering ......................................................................................................................... 38
5.2.2
Optical inspection ........................................................................................................................ 39
5.2.3
Cleaning ...................................................................................................................................... 39
5.2.4
5.2.5
Repeated reflow soldering ........................................................................................................... 40
5.2.6 Wave soldering............................................................................................................................ 40
5.2.7
Hand soldering ............................................................................................................................ 40
Rework ........................................................................................................................................ 40
5.2.8
5.2.9
Conformal coating ...................................................................................................................... 40
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5.3
5.2.10 Casting ........................................................................................................................................ 40
5.2.11 Grounding metal covers .............................................................................................................. 41
5.2.12 Use of ultrasonic processes .......................................................................................................... 41
EOS/ESD/EMI precautions ................................................................................................................... 41
Electrostatic discharge (ESD) ........................................................................................................ 41
ESD handling precautions ............................................................................................................ 41
ESD protection measures ............................................................................................................. 42
Electrical Overstress (EOS) ............................................................................................................ 42
EOS protection measures ............................................................................................................. 43
Electromagnetic interference (EMI) .............................................................................................. 43
Applications with wireless modules LEON / LISA .......................................................................... 44
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
6.1
6.2
6.3
6 Product testing ........................................................................................................... 46
u-blox in-series production test ........................................................................................................... 46
Test parameters for OEM manufacturer .............................................................................................. 46
System sensitivity test ......................................................................................................................... 46
Guidelines for sensitivity tests ...................................................................................................... 47
‘Go/No go’ tests for integrated devices ........................................................................................ 47
6.3.1
6.3.2
7 Appendix .................................................................................................................... 48
A Abbreviations ............................................................................................................. 48
Related documents........................................................................................................... 49
Revision history ................................................................................................................ 49
Contact .............................................................................................................................. 50
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1 Quick reference
When using this manual for a design, make sure you also have the data sheet for the specific positioning module
(see Related documents).
For information about migration, see sections 4.2.3 (MAX-7) and 4.2.2 (NEO-7).
Layout
Power
Interfaces
I/Os
Antenna
See section 3.3
See sections 2.3 and 2.4
See section 2.6
See section 2.7
See sections 2.5.6 and 3.4
Table 1: Quick guide to this document
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Quick reference
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MAX-7 / NEO-7 - Hardware Integration Manual
2 Hardware description
2.1 Overview
u-blox 7 modules are standalone GNSS positioning modules featuring the high performance u-blox 7 positioning
engine. Available in industry standard form factors in leadless chip carrier (LCC) packages, they are easy to
integrate and they combine exceptional positioning performance with highly flexible power, design, and
connectivity options. SMT pads allow fully automated assembly with standard pick & place and reflow-soldering
equipment for cost-efficient, high-volume production enabling short time-to-market.
For product features see the module data sheet.
To determine which u-blox product best meets your needs, see the product selector tables on the u-blox
website (www.u-blox.com).
2.2 Architecture
u-blox 7 modules consist of two functional parts - the RF block and the digital block (see Figure 1).
The RF block includes the input matching elements, the SAW band pass filter, the integrated LNA and the
oscillator, while the digital block contains the u-blox 7 GNSS engine, the RTC crystal and additional elements
such as the optional FLASH Memory for enhanced programmability and flexibility.
Figure 1: u-blox-7 block diagram
2.3 Operating modes
u-blox receivers support different power modes. These modes represent strategies of how to control the
acquisition and tracking engines in order to achieve either the best possible performance or good performance
with reduced power consumption.
2.3.1 Continuous Mode
During a cold start, a receiver in Continuous Mode continuously deploys the acquisition engine to search for all
satellites. Once the receiver can calculate a position and track a sufficient number of satellites, the acquisition
engine powers off, resulting in significant power savings. The tracking engine continuously tracks acquired
satellites and acquires other available or emerging satellites. Whenever the receiver can no longer calculate a
position or the number of satellites tracked is below the sufficient number, the acquisition engine powers on
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