NEO-7
u-blox 7 GNSS modules
Data Sheet
Highlights:
•
GNSS engine for GPS/QZSS, GLONASS
•
Product variants to meet performance and cost requirements
•
Combines low power consumption and high sensitivity
•
Backward compatible with NEO-6 and NEO-5 families
www.u-blox.com
UBX-13003830 - R07
NEO-7 - Data Sheet
Document Information
Title
NEO-7
Subtitle
u-blox 7 GNSS modules
Document type
Data Sheet
Document number
UBX-13003830
Revision, date
R07
Document status
Production Information
11-Nov-2014
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:
Name
Type number
ROM/FLASH version
PCN reference
NEO-7M-0
NEO-7M-0-000
ROM1.00
N/A
NEO-7N-0
NEO-7N-0-002
FW1.00
N/A
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.
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NEO-7 - Data Sheet
Contents
Contents.............................................................................................................................. 3
1
Functional description.................................................................................................. 5
1.1
Overview .............................................................................................................................................. 5
1.2
1.3
Product features ................................................................................................................................... 5
GNSS performance ............................................................................................................................... 6
1.3.1
GPS performance .......................................................................................................................... 6
1.3.2
GLONASS performance ................................................................................................................. 7
1.4
Block diagram....................................................................................................................................... 8
1.5
GNSS .................................................................................................................................................... 8
1.5.1
1.5.2
GPS ............................................................................................................................................... 8
GLONASS ...................................................................................................................................... 8
1.5.3
Galileo ........................................................................................................................................... 8
1.5.4
QZSS ............................................................................................................................................. 8
1.6
Augmented GNSS................................................................................................................................. 9
1.6.1
Assisted GNSS (A-GPS) .................................................................................................................. 9
1.6.2
1.6.3
AssistNow Autonomous ................................................................................................................ 9
Satellite-Based Augmentation System (SBAS) ................................................................................. 9
1.7
Data logging (NEO-7N) ......................................................................................................................... 9
1.8
EXTINT: External interrupt ................................................................................................................... 10
1.8.1
Pin Control .................................................................................................................................. 10
1.8.2
Aiding ......................................................................................................................................... 10
1.9
1.10
TIMEPULSE ......................................................................................................................................... 10
Protocols and interfaces .................................................................................................................. 10
1.11
Interfaces ........................................................................................................................................ 11
1.11.1
1.11.2
UART ........................................................................................................................................... 11
USB ............................................................................................................................................. 11
1.11.3
SPI ............................................................................................................................................... 11
1.11.4 Display Data Channel (DDC) ........................................................................................................ 11
1.12
Clock generation ............................................................................................................................ 11
1.12.1
Oscillators.................................................................................................................................... 11
1.12.2 Real-Time Clock (RTC) ................................................................................................................. 11
1.13
Power management ........................................................................................................................ 12
1.13.1
DC/DC converter ......................................................................................................................... 12
1.13.2 Operating modes ........................................................................................................................ 12
1.14
Antenna.......................................................................................................................................... 12
2
Pin Definition .............................................................................................................. 13
2.1
3
Pin assignment ................................................................................................................................... 13
Configuration management ...................................................................................... 14
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NEO-7 - Data Sheet
3.1
4
Interface Selection (D_SEL) .................................................................................................................. 14
Electrical specification ................................................................................................ 15
4.1
Absolute maximum rating .................................................................................................................. 15
4.2
4.3
Operating conditions .......................................................................................................................... 16
Indicative current requirements ........................................................................................................... 17
4.4
SPI timing diagrams ............................................................................................................................ 18
4.4.1
Timing recommendations ............................................................................................................ 18
4.5
DDC timing diagrams ......................................................................................................................... 18
5
Mechanical specifications .......................................................................................... 19
6
Reliability tests and approvals .................................................................................. 20
7
6.1
Reliability tests .................................................................................................................................... 20
6.2
Approvals ........................................................................................................................................... 20
Product handling & soldering .................................................................................... 21
7.1
Packaging ........................................................................................................................................... 21
7.1.1
7.1.2
7.2
Reels ........................................................................................................................................... 21
Tapes .......................................................................................................................................... 21
Shipment, storage and handling ......................................................................................................... 22
7.2.1
7.2.2
Moisture Sensitivity Levels ........................................................................................................... 22
Reflow soldering ......................................................................................................................... 22
7.2.3
ESD handling precautions ............................................................................................................ 22
8
Default messages ....................................................................................................... 23
9
Labeling and ordering information........................................................................... 24
9.1
Product labeling.................................................................................................................................. 24
9.2
9.3
Explanation of codes........................................................................................................................... 24
Ordering codes ................................................................................................................................... 24
Related documents........................................................................................................... 25
Revision history ................................................................................................................ 25
Contact .............................................................................................................................. 26
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NEO-7 - Data Sheet
1 Functional description
1.1 Overview
The NEO-7 series of standalone GNSS modules benefit from the exceptional performance of the u-blox 7 GNSS
(GPS, GLONASS, QZSS and SBAS) engine. The NEO-7 series delivers high sensitivity and minimal acquisition times
in the industry-proven NEO form factor.
The NEO-7 series provides maximum sensitivity while maintaining low system power. The NEO-7M is optimized
for cost sensitive applications, while NEO-7N provides best performance and easy RF integration. The NEO form
factor allows easy migration from previous NEO generations. Sophisticated RF-architecture and interference
suppression ensure maximum performance even in GNSS-hostile environments.
The NEO-7 series combines a high level of integration capability with flexible connectivity options in a miniature
2
package. This makes it perfectly suited for industrial applications with strict size and cost requirements. The I C
compatible DDC interface provides connectivity and enables synergies with u-blox SARA, LEON and LISA cellular
modules.
u-blox 7 modules use GNSS chips qualified according to AEC-Q100 and are manufactured in ISO/TS 16949
certified sites. Qualification tests are performed as stipulated in the ISO16750 standard: “Road vehicles –
Environmental conditions and testing for electrical and electronic equipment”.
1.2 Product features
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NEO-7 - Data Sheet
1.3 GNSS performance
1.3.1 GPS performance
Parameter
Specification
Receiver type
56 Channels
GPS L1C/A
SBAS L1C/A
QZSS L1C/A
Galileo E1B/C 1
Time-To-First-Fix
2
Cold Start
NEO-7N
29 s
NEO-7M
30 s
Warm Start
Hot Start
28 s
1s
28 s
1s
5s
5s
Aided Starts
3
4
NEO-7N
NEO-7M
Tracking & Navigation
-162 dBm
-161 dBm
Reacquisition
Cold Start
-160 dBm
-148 dBm
-160 dBm
-147 dBm
Warm Start
Hot Start
-148 dBm
-156 dBm
-148 dBm
-155 dBm
Autonomous
SBAS
2.5 m
2.0 m
RMS
99%
Frequency of time pulse signal
30 ns
60 ns
0.25 Hz … 10 MHz (configurable)
Max navigation update rate
Velocity accuracy 6
10 Hz
0.1 m/s
Sensitivity
Horizontal position accuracy
5
Accuracy of time pulse signal
Heading accuracy6
Operational limits 7
0.5 degrees
≤4g
50,000 m
500 m/s
Dynamics
Altitude
Velocity
Table 1: GPS performance
1
Ready to support Galileo E1B/C when available (NEO-7N)
All satellites at -130 dBm
3
Dependent on aiding data connection speed and latency
4
Demonstrated with a good external LNA
5
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs
6
50% @ 30 m/s
7
Assuming Airborne < 4 g platform
2
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1.3.2 GLONASS performance
Parameter
Specification
Receiver type
56 Channels
GLONASS L1OF
Time-To-First-Fix
Sensitivity
8
NEO-7N
NEO-7M
Cold Start
30 s
32 s
Warm Start
25 s
25 s
Hot Start
1s
NEO-7N
1s
NEO-7M
Tracking & Navigation
Reacquisition
-158 dBm
-156 dBm
-158 dBm
-156 dBm
Cold Start
Warm Start
-140 dBm
-145 dBm
-139 dBm
-145 dBm
-156 dBm
-155 dBm
9
Hot Start
Horizontal position accuracy
10
Accuracy of time pulse signal
4.0 m
RMS
99%
Frequency of time pulse signal
50 ns
100 ns
0.25 Hz … 10 MHz (configurable)
Max navigation update rate
Velocity accuracy 11
1 Hz
0.1 m/s
Heading accuracy11
Operational limits 12
0.5 degrees
≤4g
50,000 m
500 m/s
Dynamics
Altitude
Velocity
Table 2: GLONASS performance
8
All satellites at -130 dBm
Demonstrated with a good external LNA
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs
11
50% @ 30 m/s
12
Assuming Airborne < 4 g platform
9
10
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1.4 Block diagram
Figure 1: NEO-7 block diagram
1.5 GNSS
u-blox 7 positioning modules are GNSS receivers and can singly receive and track GPS, GLONASS, or Galileo
signals. QZSS signals may be received concurrently with GPS signals.
1.5.1 GPS
u-blox 7 receivers are designed to receive and track the L1C/A signals provided at 1575.42 MHz by the Global
Positioning System (GPS).
1.5.2 GLONASS
The Russian GLONASS satellite system is an alternative system to the US-based Global Positioning System (GPS).
The u-blox 7 module is capable of receiving and processing GLONASS signals using the same hardware and
provides the lowest power GLONASS functionality in the industry at low cost and with minimal integration
effort. In order to take advantage of GPS and GLONASS, dedicated hardware preparation must be taken during
the design-in phase, see the MAX-7 / NEO-7 Hardware Integration Manual [1] for u-blox design
recommendations.
The ability to receive and track GLONASS L1OF satellite signals with the same hardware results in an optimized
hardware BOM and allows design of GLONASS ready receivers where required by regulations.
Note: GLONASS and GPS signals cannot be received and tracked simultaneously by u-blox 7 modules.
1.5.3 Galileo
When Galileo-L1 signals become available, u-blox 7 flash-based receivers will be capable of receiving and
processing them via a firmware upgrade. The ability to receive and track Galileo satellite signals will result in
higher coverage, improved reliability and better accuracy.
1.5.4 QZSS
The Quasi-Zenith Satellite System (QZSS) is a navigation satellite overlay system for the Pacific region covering
Japan and Australia which transmits additional GPS L1C/A signals. u-blox 7 positioning modules are able to
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Functional description
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NEO-7 - Data Sheet
receive and to track these signals simultaneously with GPS, resulting in better availability, especially under bad
signal conditions e.g. in urban canyons.
1.6 Augmented GNSS
For more details about augmented GNSS, see the u-blox 7 Receiver Description Including Protocol
Specification [2].
1.6.1 Assisted GNSS (A-GPS)
A-GPS improves GNSS performance by delivering aiding data to the GNSS receiver via wireless networks or the
Internet. Supplying information such as ephemeris, almanac, approximate last position, time and satellite status
and an optional time synchronization signal significantly reduces Time to First Fix (TTFF) and improves acquisition
sensitivity.
AssistNow Online and AssistNow Offline are u-blox’ end-to-end A-GPS services for devices with or without
network connectivity. AssistNow Online and AssistNow Offline can either be used alone or in combination. They
are very easy to implement, require no additional hardware, and generate virtually no CPU load. All u-blox 7
modules support u-blox’ AssistNow Online, AssistNow Offline and AssistNow Autonomous A-GPS services, and
are OMA SUPL compliant.
AssistNow Online
With AssistNow Online, an internet-connected GNSS device downloads assistance data from u-blox’ AssistNow
Online Service at system start-up. AssistNow Online is network operator independent and globally available.
u-blox only sends ephemeris data for those satellites currently visible to the device requesting the data, thus
minimizing the amount of data transferred.
AssistNow Offline
With AssistNow Offline, users download u-blox’ Differential Almanac Correction Data from the Internet at their
convenience. The correction data can either be stored in the GNSS receiver’s Flash memory (available on NEO-7N
only) or in the memory of the application processor. Therefore, the service requires no connectivity at system
start-up and enables a position fix within seconds, even when no network is available.
1.6.2 AssistNow Autonomous
AssistNow Autonomous provides functionality similar to Assisted-GNSS without the need for a host or external
network connection. It is an embedded feature available free-of-charge that accelerates GNSS positioning by
capitalizing on the periodic nature of GNSS satellite orbits. GNSS orbit predictions are directly calculated by the
GNSS receiver and no external aiding data or connectivity is required. AssistNow Autonomous can be used
alone, or together with AssistNow Online or AssistNow Offline for increased positioning speed and accuracy.
1.6.3 Satellite-Based Augmentation System (SBAS)
u-blox 7 positioning modules support SBAS. These systems supplement GNSS data with additional regional or
wide area GNSS augmentation data. The system broadcasts augmentation data via satellite which can be used
by GNSS receivers to improve the resulting GNSS precision. SBAS satellites can be used as additional satellites for
ranging (navigation), further enhancing precision. The following SBAS are supported with u-blox 7: WAAS,
EGNOS and MSAS.
1.7 Data logging (NEO-7N)
New with u-blox 7 is the data logging feature, which enables continuous storage of position, velocity and time
information to an internal 16Mbit SQI FLASH memory. The information can be downloaded from the receiver
later for further analysis or for conversion to a mapping tool. For more information see the u-blox 7 Receiver
Description Including Protocol Specification [2].
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1.8 EXTINT: External interrupt
EXTINT is an external interrupt pin with fixed input voltage thresholds with respect to VCC. It can be used for
control of the receiver or for aiding.
For more information about how to implement and configure these features see the u-blox 7 Receiver
Description including Protocol Specification [2] and the MAX-7 / NEO-7 Hardware Integration Manual [1].
1.8.1 Pin Control
The pin control feature allows overriding the automatic active/inactive cycle of Power Save Mode. The state of
the receiver can be controlled through the EXTINT pin.
The receiver can also be forced OFF using EXTINT when Power Save Mode is not active.
1.8.2 Aiding
The EXTINT pin can be used to supply time or frequency aiding data to the receiver.
For time aiding, hardware time synchronization can be achieved by connecting an accurate time pulse to the
EXTINT pin.
Frequency aiding can be implemented by connecting a periodic rectangular signal with a frequency up to 500
kHz and arbitrary duty cycle (low/high phase duration must not be shorter than 50 ns) to the EXTINT pin. Provide
the applied frequency value to the receiver using UBX messages.
1.9 TIMEPULSE
A configurable time pulse signal is available with all u-blox 7 modules.
The TIMEPULSE output generates pulse trains synchronized with GNSS or UTC time grid with intervals
configurable over a wide frequency range. Thus it may be used as a low frequency time synchronization pulse or
as a high frequency reference signal.
By default the time pulse signal is configured to 1 pulse per second. For more information see the u-blox 7
Receiver Description including Protocol Specification [2].
1.10 Protocols and interfaces
Protocol
Type
NMEA
Input/output, ASCII, 0183, 2.3 (compatible to 3.0)
UBX
RTCM
Input/output, binary, u-blox proprietary
Input, 2.3
Table 3: Available Protocols
2
All protocols are available on UART, USB, DDC (I C compliant) and SPI. For specification of the various protocols
see the u-blox 7 Receiver Description Including Protocol Specification [2].
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1.11 Interfaces
A number of interfaces are provided either for data communication or memory access. The embedded firmware
uses these interfaces according to their respective protocol specifications.
1.11.1 UART
NEO-7 modules include one UART interface, which can be used for communication to a host. It supports
configurable baud rates. For supported baud rates see the u-blox 7 Receiver Description Including Protocol
Specification [2].
1.11.2 USB
A USB version 2.0 FS compatible interface can be used for communication as an alternative to the UART. The
pull-up resistor on pin USB_DP is integrated to signal a full-speed device to the host. The VDD_USB pin supplies
the USB interface.
®
u-blox provides a Microsoft certified USB driver for Windows XP, Windows Vista and Windows 7 operating
systems.
1.11.3 SPI
The SPI interface is designed to allow communication to a host CPU. The interface can be operated in slave
mode only. The maximum transfer rate using SPI is 1 Mb/s and the maximum SPI clock frequency is 5.5 MHz.
Note that SPI is not available in the default configuration, because its pins are shared with the UART and DDC
interfaces. The SPI interface can be enabled by connecting D_SEL (Pin 2) to ground (see section 3.1).
1.11.4 Display Data Channel (DDC)
2
An I C compliant DDC interface is available for communication with an external host CPU or u-blox cellular
modules. The interface can be operated in slave mode only. The DDC protocol and electrical interface are fully
2
compatible with Fast-Mode of the I C industry standard. Since the maximum SCL clock frequency is 400 kHz, the
maximum transfer rate is400 kb/s.
1.12 Clock generation
1.12.1 Oscillators
NEO-7 GNSS modules are available in Crystal and TCXO versions. The TCXO allows accelerated weak signal
acquisition, enabling faster start and reacquisition times.
1.12.2 Real-Time Clock (RTC)
The RTC is driven by a 32 kHz oscillator, which makes use of an RTC crystal. If the main supply voltage fails, and
a battery is connected to V_BCKP, parts of the receiver switch off, but the RTC still runs providing a timing
reference for the receiver. This operating mode is called Hardware Backup Mode, which enables all relevant data
to be saved in the backup RAM to later allow a hot or warm start.
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1.13 Power management
u-blox 7 technology offers a power-optimized architecture with built-in autonomous power saving functions to
minimize power consumption at any given time. An integrated high efficiency DC/DC converter allows low
power consumption even for higher main supply voltages. The receiver can be operated in two operating modes:
Continuous Mode or Power Save Mode.
For more information about power management strategies, see the u-blox 7 Receiver Description Including
Protocol Specification [2].
1.13.1 DC/DC converter
NEO-7 Modules integrate a DC/DC converter, allowing reduced power consumption especially when using a
main supply voltage above 2.5 V.
For more information see the MAX-7 / NEO-7 Hardware Integration Manual [1]
1.13.2 Operating modes
u-blox 7 modules have two operating modes:
•
Continuous Mode for best GNSS performance
•
Power Save Mode to optimize power consumption
1.13.2.1 Continuous Mode
Continuous Mode uses the acquisition engine at full performance resulting in the shortest possible TTFF and the
highest sensitivity. It searches for all possible satellites until the Almanac is completely downloaded. The receiver
then switches to the tracking engine to lower power consumption.
Thus, a lower tracking current consumption level will be achieved when:
•
A valid GNSS position is obtained
•
The entire Almanac has been downloaded
•
The Ephemeris for each satellite in view is valid
1.13.2.2 Power Save Mode
For power sensitive applications, u-blox 7 receivers provide a Power Save Mode for reduced power consumption.
Power Save Mode uses two dedicated operations called ON/OFF and Cyclic tracking, that reduce average current
consumption in different ways to match the needs of the specific application. These operations can be set by
using a specific ubx message.
Power Save Mode is not available in GLONASS mode.
1.14 Antenna
13
14
NEO-7 modules are designed for use with passive and active antennas.
Parameter
Specification
Antenna Type
Active Antenna Recommendations
Minimum gain
Maximum gain
Maximum noise figure
Passive and active antenna
15 dB (to compensate signal loss in RF cable)
50 15 dB / 30 16 dB
1.5 dB
Table 4: Antenna Specifications for all NEO-7 modules
13
For integration NEO-7 modules with Cellular products, see the MAX-7 / NEO-7 Hardware Integration Manual [1].
For information on using active antennas with NEO-7 modules, see the MAX-7 / NEO-7 Hardware Integration Manual [1].
15
NEO-7M
16
NEO-7N
14
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2 Pin Definition
2.1 Pin assignment
Figure 2: Pin Assignment
No
Module
Name
I/O
Description
1
All
Reserved
I
Reserved
2
All
D_SEL
I
Interface select
3
4
All
All
TIMEPULSE
EXTINT
O
I
Time pulse (1PPS)
External Interrupt Pin
5
6
All
All
USB_DM
USB_DP
I/O
I/O
USB Data
USB Data
7
8
All
All
VDD_USB
RESET_N
I
I
USB Supply
RESET_N
9
All
VCC_RF
O
Output Voltage RF section
10
11
All
All
GND
RF_IN
I
I
Ground
GNSS signal input
12
All
GND
I
Ground
13
All
GND
I
Ground
14
NEO-7N
NEO-7M
ANT_ON
Reserved
O
-
Antenna control
Reserved
15
All
Reserved
-
Reserved
16
17
All
All
Reserved
Reserved
-
Reserved
Reserved
18
All
19
All
20
All
21
All
22
23
24
SDA
SPI CS_N
SCL
SPI CLK
TxD
SPI MISO
I/O
I/O
O
DDC Data if D_SEL =1 (or open)
SPI Chip Select if D_SEL = 0
DDC Clock if D_SEL =1(or open)
SPI Clock if D_SEL = 0
Serial Port if D_SEL =1(or open)
SPI MISO if D_SEL = 0
All
All
RxD
SPI MOSI
V_BCKP
VCC
I
I
Serial Port if D_SEL =1(or open)
SPI MOSI if D_SEL = 0
Backup voltage supply
Supply voltage
All
GND
I
Ground
I
Table 5: Pinout
Pins designated Reserved should not be used. For more information about Pinouts see the MAX-7 / NEO-7
Hardware Integration Manual [1].
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NEO-7 - Data Sheet
3 Configuration management
Configuration settings can be modified with UBX configuration messages. The modified settings remain effective
until power-down or reset. If these settings have been stored in battery-backup RAM, then the modified
configuration will be retained, as long as the backup battery supply is not interrupted.
With the NEO-7N, configuration settings modified with UBX configuration messages can be saved permanently.
In this case, the modified settings remain effective even after power-down and do not require backup battery
supply.
3.1 Interface Selection (D_SEL)
At startup the Pin 2 (D_SEL) determines which data interfaces are used for communication. If D_SEL is set high or
left open, UART and DDC become available. If D_SEL is set low, i.e. connected to ground, the NEO Module can
communicate to a host via SPI.
20
D_SEL=”1”
(left open)
UART TX
D_SEL =”0”
(connected to GND)
SPI MISO
21
19
UART RX
DDC SCL
SPI MOSI
SPI CLK
18
DDC SDA
SPI CS_N
PIN #
Table 6: Data interface selection by D_SEL
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NEO-7 - Data Sheet
4 Electrical specification
The limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress
above one or more of the limiting values may cause permanent damage to the device. These are stress
ratings only and operation of the device at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied. Exposure to these limits for extended periods may
affect device reliability.
Where application information is given, it is advisory only and does not form part of the specification. For
more information see the MAX-7 / NEO-7 Hardware Integration Manual [1].
4.1 Absolute maximum rating
Parameter
Symbol
Module
Power supply voltage
Backup battery voltage
VCC
V_BCKP
USB supply voltage
Input pin voltage
DC current trough any digital I/O pin (except supplies)
VCC_RF output current
Ipin
ICC_RF
All
Input power at RF_IN
Prfin
All
Storage temperature
Tstg
All
Condition
Min
Max
Units
All
All
-0.5
-0.5
3.6
3.6
V
V
VDD_USB
Vin
All
All
-0.5
-0.5
3.6
3.6
V
V
Vin_usb
All
-0.5
source impedance
= 50 Ω,
continuous wave
-40
VDD_USB
V
10
100
mA
mA
13
dBm
85
°C
Table 7: Absolute maximum ratings
Stressing the device beyond the “Absolute Maximum Ratings” may cause permanent damage.
These are stress ratings only. The product is not protected against overvoltage or reversed
voltages. If necessary, voltage spikes exceeding the power supply voltage specification, given in
table above, must be limited to values within the specified boundaries by using appropriate
protection diodes.
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4.2 Operating conditions
All specifications are at an ambient temperature of 25°C. Extreme operating temperatures can significantly
impact specification values. Applications operating near the temperature limits should be tested to ensure
the specification.
Parameter
Symbol
Power supply voltage
VCC
Module
Min
Typical
Max
Units
NEO-7M
1.65
3.6
V
NEO-7N
2.7
3.0
3.6
V
3.0
1.4
3.3
3.6
3.6
V
V
Supply voltage USB
Backup battery voltage
VDDUSB
V_BCKP
All
All
Backup battery current
I_BCKP
All
15
SW backup current
I_SWBCKP
NEO-7M
20
35
Input pin voltage range
Vin
NEO-7N
All
0
VCC
V
Digital IO Pin Low level input voltage
Digital IO Pin High level input voltage
Vil
Vih
All
All
0
0.7*VCC
0.2*VCC
VCC
V
V
Digital IO Pin Low level output voltage
Vol
All
0.4
V
Digital IO Pin High level output voltage
USB_DM, USB_DP
Voh
VinU
All
All
VCC_RF voltage
VCC_RF output current
VCC_RF
ICC_RF
All
All
VCC-0.1
Receiver Chain Noise Figure
NFtot
NEO-7M
NEO-7N
3.5
2.0
Operating temperature
Topr
All
µA
Condition
µA
V_BCKP = 1.8 V,
VCC = 0 V
VCC = 3 V
µA
VCC = 3 V
Iol = 4 mA
VCC -0.4
V
Ioh = 4 mA
Compatible with USB with 22 Ω series resistance
50
-40
V
mA
dB
dB
85
°C
Table 8: Operating conditions
Operation beyond the specified operating conditions can affect device reliability.
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Page 16 of 26
NEO-7 - Data Sheet
4.3 Indicative current requirements
Table 9 lists examples of the total system supply current for a possible application.
Values in Table 9 are provided for customer information only as an example of typical power requirements.
Values are characterized on samples, actual power requirements can vary depending on FW version used,
external circuitry, number of SVs tracked, signal strength, type of start as well as time, duration and
conditions of test.
Parameter
Max. supply current
Symbol
17
Iccp
Min
Typ
Max
Units
67
All
NEO-7N
32
mA
mA
Icc Tracking
NEO-7M
NEO-7N
22
26
mA
mA
(Continuous mode,)
NEO-7M
17
mA
Icc Tracking
NEO-7N
11
mA
(Power Save mode / 1 Hz)
NEO-7M
5
mA
Icc Acquisition
Average supply current 18, 19
Module
20
Condition
Estimated at 3V
Estimated at 3V
Estimated at 3V
Table 9: Indicative power requirements at 3.0 V
For more information about power requirements, see the MAX-7 / NEO-7 Hardware Integration Manual [1]
17
Use this figure to dimension maximum current capability of power supply. Measurement of this parameter with 1 Hz bandwidth.
Use this figure to determine required battery capacity.
19
Simulated constellation of 8 satellites is used. All signals are at -130 dBm.
20
Average current from start-up until the first fix.
18
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NEO-7 - Data Sheet
4.4 SPI timing diagrams
In order to avoid incorrect operation of the SPI, the user needs to comply with certain timing conditions. The
following signals need to be considered for timing constraints:
Symbol
Description
SPI CS_N (SS_N)
Slave select signal
SPI CLK (SCK)
Slave clock signal
Table 10: Symbol description
Figure 3: SPI timing diagram
4.4.1 Timing recommendations
The recommendations below are based on a firmware running from Flash memory.
Parameter
Description
Recommendation
tINIT
Initialization Time
500 µs
tDES
Deselect Time
1 ms.
Bit rate
1 Mb/s
Table 11: SPI timing recommendations
The values in the above table result from the requirement of an error-free transmission. By allowing just a
few errors and disabling the glitch filter, the bit rate can be increased considerably.
4.5 DDC timing diagrams
2
2
The DDC interface is I C Fast Mode compliant. For timing parameters consult the I C standard.
The maximum bit rate is 400 kb/s. The interface stretches the clock when slowed down when serving
interrupts, so real bit rates may be slightly lower.
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NEO-7 - Data Sheet
5 Mechanical specifications
Figure 4: Dimensions
For information regarding the Paste Mask and Footprint see the MAX-7 / NEO-7 Hardware Integration
Manual [1].
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Mechanical specifications
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NEO-7 - Data Sheet
6 Reliability tests and approvals
6.1 Reliability tests
All NEO-7 modules are based on AEC-Q100 qualified GNSS chips.
Tests for product family qualifications are according to ISO 16750 “Road vehicles – Environmental conditions
and testing for electrical and electronic equipment”, and appropriate standards.
6.2 Approvals
Products marked with this lead-free symbol on the product label comply with the
“Directive 2002/95/EC of the European Parliament and the Council on the Restriction of
Use of certain Hazardous Substances in Electrical and Electronic Equipment” (RoHS).
All u-blox 7 GNSS modules are RoHS compliant.
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Reliability tests and approvals
Page 20 of 26
NEO-7 - Data Sheet
7 Product handling & soldering
7.1 Packaging
NEO-7 modules are delivered as hermetically sealed, reeled tapes in order to enable efficient production,
production lot set-up and tear-down. For more information see the u-blox Package Information Guide [3].
7.1.1 Reels
NEO-7 GNSS modules are deliverable in quantities of 250pcs on a reel. NEO-7 modules are shipped on Reel Type
B, as specified in the u-blox Package Information Guide [3].
7.1.2 Tapes
The dimensions and orientations of the tapes for NEO-7 modules are specified in Figure 5.
Figure 5: Dimensions and orientation for NEO-7 modules on tape
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Page 21 of 26
NEO-7 - Data Sheet
7.2 Shipment, storage and handling
For important information regarding shipment, storage and handling see the u-blox Package Information Guide
[3].
7.2.1 Moisture Sensitivity Levels
The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required. NEO-7 modules
are rated at MSL level 4.
For MSL standard see IPC/JEDEC J-STD-020, which can be downloaded from www.jedec.org.
7.2.2 Reflow soldering
Reflow profiles are to be selected according u-blox recommendations (see the MAX-7 / NEO-7 Hardware
Integration Manual [1]).
7.2.3 ESD handling precautions
NEO-7 modules are Electrostatic Sensitive Devices (ESD). Observe precautions for handling!
Failure to observe these precautions can result in severe damage to the GNSS receiver!
GNSS receivers are Electrostatic Sensitive Devices (ESD) and require special precautions when handling. Particular
care must be exercised when handling patch antennas, due to the risk of electrostatic charges. In addition to
standard ESD safety practices, the following measures should be taken into account whenever handling the
receiver:
•
Unless there is a galvanic coupling between the
local GND (i.e. the work table) and the PCB GND,
then the first point of contact when handling the
PCB must always be between the local GND and
PCB GND.
•
Before mounting an antenna patch, connect
ground of the device
•
When handling the RF pin, do not come into
contact with any charged capacitors and be
careful when contacting materials that can
develop charges (e.g. patch antenna ~10 pF, coax
cable ~50-80 pF/m, soldering iron, …)
•
To prevent electrostatic discharge through the RF
input, do not touch any exposed antenna area. If
there is any risk that such exposed antenna area is
touched in non ESD protected work area,
implement proper ESD protection measures in the
design.
•
When soldering RF connectors and patch
antennas to the receiver’s RF pin, make sure to
use an ESD safe soldering iron (tip).
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NEO-7 - Data Sheet
8 Default messages
Interface
Settings
UART Output
9600 Baud, 8 bits, no parity bit, 1 stop bit
Configured to transmit both NMEA and UBX protocols, but only the following NMEA (and no UBX)
messages have been activated at start-up:
GGA, GLL, GSA, GSV, RMC, VTG, TXT
Configured to transmit both NMEA and UBX protocols, but only the following NMEA (and no UBX)
messages have been activated at start-up:
GGA, GLL, GSA, GSV, RMC, VTG, TXT
USB Power Mode: Bus Powered
9600 Baud, 8 bits, no parity bit, 1 stop bit, Autobauding disabled
Automatically accepts following protocols without need of explicit configuration:
UBX, NMEA
The GNSS receiver supports interleaved UBX and NMEA messages.
Automatically accepts following protocols without need of explicit configuration:
UBX, NMEA
The GNSS receiver supports interleaved UBX and NMEA messages.
USB Power Mode: Bus Powered
1 pulse per second, synchronized at rising edge, pulse length 100ms
USB Output
UART Input
USB Input
TIMEPULSE
(1 Hz Nav)
Table 12: Default messages
Refer to the u-blox 7 Receiver Description Including Protocol Specification [2] for information about further
settings.
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Default messages
Page 23 of 26
NEO-7 - Data Sheet
9 Labeling and ordering information
9.1 Product labeling
The labeling of u-blox 7 GNSS modules includes important product information. The location of the product type
number is shown in Figure 6.
Figure 6: Location of product type number on u-blox 7 module label
9.2 Explanation of codes
3 different product code formats are used. The Product Name is used in documentation such as this data sheet
and identifies all u-blox 7 products, independent of packaging and quality grade. The Ordering Code includes
options and quality, while the Type Number includes the hardware and firmware versions. Table 13 below
details these 3 different formats:
Format
Structure
Product Name
Ordering Code
PPP-GV
PPP-GV-T
Type Number
PPP-GV-T-XXX
Table 13: Product Code Formats
The parts of the product code are explained in Table 14.
Code
Meaning
Example
PPP
Product Family
NEO
G
V
Product Generation
Variant
7 = u-blox7
T = Timing, R = DR, etc.
T
Option / Quality Grade
XXX
Product Detail
Describes standardized functional element or quality grade such
as Flash size, automotive grade etc.
Describes product details or options such as hard- and software
revision, cable length, etc.
Table 14: part identification code
9.3 Ordering codes
Ordering No.
Product
NEO-7M-0
NEO-7N-0
u-blox 7 GNSS Module, ROM, Crystal, 12.2x16 mm, 250 pcs/reel
u-blox 7 GNSS Module, Flash, TCXO, SAW, LNA, 12.2x16 mm, 250 pcs/reel
Table 15: Product ordering codes for professional grade modules
Product changes affecting form, fit or function are documented by u-blox. For a list of Product Change
Notifications (PCNs) see our website.
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Page 24 of 26
NEO-7 - Data Sheet
Related documents
[1]
MAX-7 / NEO-7 Hardware Integration Manual, Docu. No. UBX-13003704
[2]
[3]
u-blox 7 Receiver Description including Protocol Specification, Docu. No GPS.G7-SW-12001
u-blox Package Information Guide, Docu. No. UBX-14001652
Revision history
Revision
Date
Name
Status / Comments
1
28-Aug-2012
18-Feb-2013
dhur/cbib
dhur/cbib
R03
R04
30-Jan-2014
06-Feb-2014
dhur
smos
Initial release
Updated section 1.5. Corrected table 6.
Last revision with document number GPS.G7-HW-11004
Changed status to Early Production Information
Corrected product type table on page 2.
R05
12-May-2014
julu
R06
19-May-2014
julu
Aligned product selector table in section 1.2; updated Figure 1(removed
I/O supply from the Block Diagram); added recommendation for using
passive antenna in Table 4; added SW backup current figures in Table 8.
Changed status to Production Information
R07
11-Nov-2014
julu
Updated section 1.2 (added product grade information to selector table)
UBX-13003830 - R07
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Related documents
Page 25 of 26
NEO-7 - Data Sheet
Contact
For complete contact information visit us at www.u-blox.com
u-blox Offices
North, Central and South America
u-blox America, Inc.
Phone:
E-mail:
+1 703 483 3180
info_us@u-blox.com
Regional Office West Coast:
Phone:
+1 408 573 3640
E-mail:
info_us@u-blox.com
Headquarters
Europe, Middle East, Africa
Asia, Australia, Pacific
u-blox AG
Phone:
E-mail:
Support:
Phone:
E-mail:
Support:
+41 44 722 74 44
info@u-blox.com
support@u-blox.com
Technical Support:
Phone:
E-mail:
+1 703 483 3185
support_us@u-blox.com
u-blox Singapore Pte. Ltd.
+65 6734 3811
info_ap@u-blox.com
support_ap@u-blox.com
Regional Office Australia:
Phone:
+61 2 8448 2016
E-mail:
info_anz@u-blox.com
Support: support_ap@u-blox.com
Regional Office China (Beijing):
Phone:
+86 10 68 133 545
E-mail:
info_cn@u-blox.com
Support: support_cn@u-blox.com
Regional Office China (Shenzhen):
Phone:
+86 755 8627 1083
E-mail:
info_cn@u-blox.com
Support: support_cn@u-blox.com
Regional Office India:
Phone:
+91 959 1302 450
E-mail:
info_in@u-blox.com
Support: support_in@u-blox.com
Regional Office Japan:
Phone:
+81 3 5775 3850
E-mail:
info_jp@u-blox.com
Support: support_jp@u-blox.com
Regional Office Korea:
Phone:
+82 2 542 0861
E-mail:
info_kr@u-blox.com
Support: support_kr@u-blox.com
Regional Office Taiwan:
Phone:
+886 2 2657 1090
E-mail:
info_tw@u-blox.com
Support: support_tw@u-blox.com
UBX-13003830 - R07
Production Information
Contact
Page 26 of 26
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