EVA-M8M u-blox M8 concurrent GNSS modules Data Sheet

EVA-M8M
u-blox M8 concurrent GNSS modules
Data Sheet
Highlights:
·
Industry’s smallest GNSS module
·
Concurrent reception of up to 3 GNSS (GPS, Galileo, GLONASS, BeiDou)
·
Security and integrity protection
·
Support all satellite augmentation systems
·
Advanced jamming and spoofing detection
·
Backward compatible with EVA-7M
www.u-blox.com
UBX-160007405 - R02
This datasheet has been downloaded from http://www.digchip.com at this page
EVA-M8M - Data Sheet
Document Information
Title
EVA-M8M
Subtitle
u-blox M8 concurrent GNSS modules
Document type
Data Sheet
Document number
UBX-160007405
Revision and date
R02
Document status
Production Information
21-Jul-2016
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:
Product name
Type number
ROM/FLASH version
EVA-M8M
EVA-M8M-0-10
ROM SPG 3.01 / Flash FW SPG 3.01
PCN reference
UBX-16012546
EVA-M8M
EVA-M8M-1-10
ROM SPG 3.01 / Flash FW SPG 3.01
UBX-16012546
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 © 2016, 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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Contents
Contents.............................................................................................................................. 3
1
Functional description.................................................................................................. 6
1.1
Overview .............................................................................................................................................. 6
1.2
1.3
Product features ................................................................................................................................... 6
Performance ......................................................................................................................................... 7
1.4
Block diagram....................................................................................................................................... 8
1.5
Supported GNSS Constellations ............................................................................................................ 8
1.5.1
GPS ............................................................................................................................................... 9
1.5.2
GLONASS ...................................................................................................................................... 9
1.5.3
1.5.4
BeiDou .......................................................................................................................................... 9
Galileo ........................................................................................................................................... 9
1.6
Assisted GNSS (A-GNSS) ....................................................................................................................... 9
1.6.1
1.6.2
AssistNow™ Online ....................................................................................................................... 9
AssistNow™ Offline .................................................................................................................... 10
1.6.3
AssistNow™ Autonomous ........................................................................................................... 10
1.7
Augmentation Systems ....................................................................................................................... 10
1.7.1
Satellite-Based Augmentation System (SBAS) ............................................................................... 10
1.7.2
QZSS ........................................................................................................................................... 10
1.7.3
1.7.4
IMES............................................................................................................................................ 10
Differential GPS (D-GPS) .............................................................................................................. 11
1.8
Broadcast navigation data and satellite signal measurement ............................................................... 11
1.9
1.10
Odometer ........................................................................................................................................... 11
Data logging ................................................................................................................................... 11
1.11
Geofenceing ................................................................................................................................... 11
1.12
1.13
Message Integrity Protection ........................................................................................................... 11
Spoofing Detection ......................................................................................................................... 12
1.14
EXTINT: External interrupt ............................................................................................................... 12
1.14.1
1.14.2
Pin Control .................................................................................................................................. 12
Aiding ......................................................................................................................................... 12
1.15
TIMEPULSE ...................................................................................................................................... 12
1.16
1.17
Protocols and interfaces .................................................................................................................. 12
Interfaces ........................................................................................................................................ 13
1.17.1
UART ........................................................................................................................................... 13
1.17.2
1.17.3
USB ............................................................................................................................................. 13
SPI ............................................................................................................................................... 13
1.17.4
Display Data Channel (DDC) ........................................................................................................ 13
1.17.5
1.17.6
Serial Quad Interface (SQI) ........................................................................................................... 13
Interface selection (D_SEL) ........................................................................................................... 13
1.18
Configurable Input Output pins ...................................................................................................... 14
1.19
Safe Boot Mode .............................................................................................................................. 14
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1.20
1.21
System reset.................................................................................................................................... 14
Clock generation ............................................................................................................................ 14
1.21.1
Oscillator ..................................................................................................................................... 14
1.21.2 Real-Time Clock (RTC) ................................................................................................................. 14
1.22
Power Management ....................................................................................................................... 15
1.22.1
DC/DC converter ......................................................................................................................... 15
1.22.2
1.22.3
Power Mode Setup ...................................................................................................................... 15
Continuous Mode ....................................................................................................................... 15
1.22.4
Power Save Mode ....................................................................................................................... 15
1.23
Antenna .......................................................................................................................................... 16
1.23.1 Active antenna control (ANT_OFF) ............................................................................................... 16
1.23.2
2
3
Active Antenna supervisor and short circuit detection.................................................................. 16
Pin definition .............................................................................................................. 17
2.1
Pin assignment ................................................................................................................................... 17
2.2
Pin name changes............................................................................................................................... 19
Electrical specification ................................................................................................ 20
3.1
Absolute maximum rating .................................................................................................................. 20
3.2
Operating conditions .......................................................................................................................... 21
3.2.1
DC electrical characteristic ........................................................................................................... 21
3.2.2
3.3
3.4
Indicative power requirements ............................................................................................................ 22
SPI timing diagrams ............................................................................................................................ 23
3.4.1
3.5
Baseband parameters .................................................................................................................. 22
Timing recommendations ............................................................................................................ 24
DCC timing diagrams ......................................................................................................................... 24
4
Mechanical specification ............................................................................................ 25
5
Reliability tests and approvals .................................................................................. 26
5.1
5.2
6
Reliability tests .................................................................................................................................... 26
Approvals ........................................................................................................................................... 26
Product handling ........................................................................................................ 27
6.1
Packaging ........................................................................................................................................... 27
6.1.1
Reels ........................................................................................................................................... 27
6.1.2
6.2
6.3
Tapes .......................................................................................................................................... 27
Moisture Sensitivity Levels ................................................................................................................... 28
ESD handling precautions ................................................................................................................... 28
7
Default messages ....................................................................................................... 29
8
Labeling and ordering information........................................................................... 30
8.1
Product labeling.................................................................................................................................. 30
8.2
8.3
Explanation of product codes ............................................................................................................. 30
Ordering codes ................................................................................................................................... 30
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Related documents........................................................................................................... 31
Revision history ................................................................................................................ 31
Contact .............................................................................................................................. 32
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1 Functional description
1.1
Overview
The EVA-M8M GNSS modules feature the exceptional performance of the u-blox M8 concurrent positioning
engine (receiving GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS signals). The EVA-M8M series modules deliver
high sensitivity and minimal acquisition times in the ultra compact EVA form factor. The EVA-M8M series
modules comes in two variants: EVA-M8M-0 defaults to GPS/QZSS/GLONASS whereas EVA-M8M-1 defaults to
GPS/QZSS/BeiDou.
The EVA-M8M series is an ideal solution for cost and space-sensitive applications. It is easy to design in, only
requiring an external GNSS antenna in most applications. The layout of the EVA-M8M series is especially
designed to ease the customer’s design and limit near-field interferences, since RF and digital domains are kept
separate.
The EVA-M8M series uses a crystal oscillator for lower system costs. Like other u-blox GNSS modules, the
EVA-M8M modules use components selected for functioning reliably in the field over the full operating
temperature range. In addition, EVA-M8M provides an SQI interface for optional external FLASH, for future
firmware upgrades and improved A-GNSS performance. EVA-M8M supports message integrity protection, geofencing, and spoofing detection.
With a dual-frequency RF front-end, the u-blox M8 concurrent GNSS engine is able to intelligently use the
highest number of visible satellites from three GNSS (GPS and Galileo, together with GLONASS or BeiDou)
systems for reliable positioning.
The EVA-M8M can be easily integrated in manufacturing, thanks to the QFN-like package. The modules are
available in 500 pieces/reel, ideal for small production batches. The modules combine a high level of integration
capability with flexible connectivity options in a miniature package. This makes the EVA-M8M modules perfectly
suited for small size and cost-sensitive industrial and wearable devices. The DDC (I2C compliant) interface
provides connectivity and enables synergies with u-blox cellular modules.
The EVA-M8M modules are manufactured in ISO/TS 16949 certified sites and qualified as stipulated in the
JESD47 standard.
1.2
Product features
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1.3
Performance
Parameter
Specification
Receiver type
72-channel u-blox M8 engine
GPS/QZSS L1C/A, GLONASS L1OF, BeiDou B1l, Galileo E1B/C, SBAS L1C/A: WAAS, EGNOS, MSAS, GAGAN
Accuracy of time
pulse signal
RMS
99%
Frequency of time
pulse signal
0.25 Hz…10 MHz
(configurable)
Operational limits 1
Dynamics
£4g
Altitude
50,000 m
Velocity
500 m/s
Velocity accuracy 2
Heading accuracy
30 ns
60 ns
0.05m/s
2
0.3 degrees
GNSS
GPS & GLONASS
GPS
GLONASS
BeiDou
Galileo
Horizontal position
accuracy 3
2.5 m
2.5 m
4.0 m
3.0 m
TBD
18 Hz
18 Hz
18 Hz
Max navigation
update rate
ROM
10 Hz
18 Hz
FLASH
5 Hz
10 Hz
10 Hz
10 Hz
10 Hz
Time-To-First-Fix 4
Cold start
26 s
30 s
31 s
39 s
57 s
Hot start
1s
1s
1s
1s
1s
Aided starts 5
3s
3s
3s
7s
7s
Tracking &
Navigation
–164 dBm
–164 dBm
-163 dBm
-160 dBm
-154 dBm
6
Sensitivity
Reacquisition
–160 dBm
–159 dBm
-156 dBm
-155 dBm
-152 dBM
Cold start
–148 dBm
–147 dBm
-145 dBm
–143 dBm
-133 dBm
Hot start
–157 dBm
–156 dBm
-155 dBm
-155 dBm
-151 dBm
Table 1: EVA-M8M performance in different GNSS modes
1
2
3
4
5
6
Assuming Airborne < 4 g platform
50% @ 30m/s
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs
All satellites at -130 dBm, except Galileo at -127 dBm
Dependent on aiding data connection speed and latency
Demonstrated with a good external LNA
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1.4
Block diagram
Figure 1: EVA-M8M block diagram
1.5
Supported GNSS Constellations
The EVA-M8M modules are concurrent GNSS receivers and can receive and track multiple GNSS systems (GPS,
GLONASS, Galileo, BeiDou and QZSS signals). Owing to the dual-frequency RF front-end architecture, either
GLONASS or BeiDou can be processed concurrently with GPS and Galileo signals, providing reception of three
GNSS systems. The EVA-M8M series has two variants: EVA-M8M-0 (default: concurrent GPS/QZSS/SBAS and
GLONASS) and EVA-M8M-1 (default: concurrent GPS/QZSS/SBAS and BeiDou). If power consumption is a key
factor, then the EVA-M8M should be configured for single GNSS operation using GPS or GLONASS or BeiDou
and disabling QZSS and SBAS. The module can be configured to receive any single GNSS constellation or any of
the set of permissible combinations shown below.
GPS
Galileo
GLONASS
BeiDou
•
•
–
–
•
•
•
–
•
•
–
•
•
–
•
–
EVA-M8M-0 default
•
–
–
•
EVA-M8M-1 default
–
•
•
–
–
–
•
–
–
•
•
•
Table 2: Permissible GNSS combinations (• = enabled)
The augmentation systems: SBAS and QZSS can be enabled only if GPS operation is configured.
Galileo is not enabled as the default configuration.
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When the EVA-M8M-1 variant is attached with an external SQI flash without running flash firmware, the
default concurrent reception of GPS/QZSS/SBAS and BeiDou remains unchanged. If the flash is also used for
execution of firmware update, the default reception will be reset to GPS/QZSS/SBAS and GLONASS. See the
EVA-8M / EVA-M8 Hardware Integration Manual [1] for more information on how to preset default
concurrent reception of GPS/QZSS/SBAS and BeiDou.
1.5.1 GPS
The EVA-M8M positioning modules 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 EVA-M8M modules can receive and process the GLONASS satellite system as an alternative to the US-based
Global Positioning System (GPS). The u-blox EVA-M8M series is designed to receive and track the L1OF signals
GLONASS provided at 1602 MHz + k*562.5 kHz, where k is the satellite’s frequency channel number (k = –7,...,
5, 6). The ability to receive and track GLONASS L1OF satellite signals allows design of GLONASS receivers where
required by regulations.
To take advantage of GPS and GLONASS, dedicated hardware preparation must be made during the design-in
phase. See the EVA-8M / EVA-M8 Hardware Integration Manual [1] for u-blox design recommendations.
1.5.3 BeiDou
The EVA-M8M modules can receive and process the B1I signals broadcast at 1561.098 MHz from the BeiDou
Navigation Satellite System. The ability to receive and track BeiDou B1 satellite signals in conjunction with
another constellation results in higher coverage, improved reliability and better accuracy. Currently, BeiDou is not
fully operational globally and provides Chinese regional coverage only. Global coverage is scheduled for 2020.
1.5.4 Galileo
The EVA-M8M positioning modules can receive and track the E1-B/C signals centered on the GPS L1 frequency
band. GPS and Galileo signals can be processed concurrently together with BeiDou or GLONASS signals,
enhancing coverage, reliability and accuracy. The SAR return link message (RLM) parameters for both short and
long versions are decoded by the receiver and made available to users via UBX proprietary messages.
Galileo has been implemented according to ICD release 1.2 (November 2015) and verified with live signals
from the Galileo in-orbit validation campaign. Since the Galileo satellite system has not yet reached Initial
(IOC) nor Full Operational Capability (FOC), changes to the Galileo signal specification (OS SIS ICD) remain
theoretically possible. u-blox therefore recommends to use Flash memory in designs utilizing Galileo signals
in order to allow for a FW update in the unlikely event of a change to the Galileo signal specification (OS SIS
ICD).
Galileo reception is by default disabled, but can be enabled by sending a configuration message (UBX-CFGGNSS) to the receiver. See the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2]
for more information.
1.6
Assisted GNSS (A-GNSS)
Supply of GNSS receiver assistance information, such as ephemeris, almanac, rough user position and time, will
reduce the time to first fix significantly and improve acquisition sensitivity. All u-blox M8030 based products
support the u-blox AssistNow Online and AssistNow Offline A-GNSS services, support AssistNow Autonomous,
and are OMA SUPL compliant.
1.6.1 AssistNow™ Online
With AssistNow Online, an Internet connected host downloads assistance data from the u-blox AssistNow Online
service to the receiver at system start-up. The Multi-GNSS Assistance (MGA) service is an HTTP protocol based
network operator independent service.
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Supplying assistance information, such as ephemeris, almanac, a rough last position and time, can reduce the
time to first fix significantly and improve acquisition sensitivity.
The AssistNow Online service provides data for GPS, GLONASS, BeiDou, Galileo and QZSS.
1.6.2 AssistNow™ Offline
With the AssistNow Offline service, users can download long-term orbit data over the Internet at their
convenience. The orbit data can be stored in the GNSS receiver’s SQI flash memory or alternatively within the
memory of the application processor. The function requires no connectivity at system start-up, enabling a
position fix within seconds, even when no network is available. AssistNow Offline offers augmentation for up to
35 days.
AssistNow Offline service provides data for GPS and GLONASS only, BeiDou and Galileo are not currently
supported
1.6.3 AssistNow™ Autonomous
AssistNow Autonomous provides aiding information without the need for a host or external network
connection. Based on previous broadcast satellite ephemeris data downloaded to and stored by the GNSS
receiver, AssistNow Autonomous automatically generates accurate predictions of satellite orbital data
(“AssistNow Autonomous data”) that is usable for future GNSS position fixes. The concept capitalizes on the
periodic nature of GNSS satellites; by capturing strategic ephemeris data at specific times of the day, the receiver
can predict accurate satellite ephemeris for up to six days after initial reception.
u-blox’s AssistNow Autonomous benefits are:
·
·
·
·
Faster fix in situations where GNSS satellite signals are weak
No connectivity required
Compatible with AssistNow Online and Offline (can work stand-alone, or in tandem with these services)
No integration effort; calculations are done in the background, transparent to the user.
For best AssistNow Autonomous performance and data storage, the use of an SQI flash memory is
recommended for EVA-M8M modules, otherwise only GPS satellites are used and the prediction time
decreases to three days.
1.7
Augmentation Systems
1.7.1 Satellite-Based Augmentation System (SBAS)
u-blox EVA-M8M positioning modules support SBAS. These systems supplement GNSS data with additional
regional or wide area GPS augmentation data. The system broadcasts range correction and integrity information
via satellite which can be used by GNSS receivers to improve resulting precision. SBAS satellites can be used as
additional satellites for ranging (navigation), further enhancing availability. The following SBAS types are
supported: GAGAN, WAAS, EGNOS and MSAS.
For more details see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2].
1.7.2 QZSS
The Quasi-Zenith Satellite System (QZSS) is a regional navigation satellite system that transmits additional GPS L1
C/A signals for the Pacific region covering Japan and Australia. EVA-M8M positioning module is able to receive
and track these signals concurrently with GPS signals, resulting in better availability especially under challenging
signal conditions, e.g. in urban canyons. The L1- SAIF signal provided by QZSS can be enabled for reception via a
GNSS configuration message
1.7.3 IMES
The Japanese Indoor MEssaging System (IMES) system is used for indoor position reporting using low-power
transmitters which broadcast a GPS–like signal. EVA-M8M module can be configured to receive and demodulate
the signal to provide an in-door location estimate.
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This service is authorized and available only in Japan.
IMES reception is disabled by default
1.7.4 Differential GPS (D-GPS)
u-blox EVA-M8M modules support Differential-GPS data according to RTCM 10402.3 [4]. The use of DifferentialGPS data improves GPS position accuracy. The RTCM implementation supports the following RTCM 2.3
messages:
Message Type
Description
1
Differential GPS Corrections
2
3
Delta Differential GPS Corrections
GPS Reference Station Parameters
9
GPS Partial Correction Set
Table 3: Supported RTCM 2.3 messages
RTCM correction cannot be used together with SBAS.
For more information see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2].
1.8
Broadcast navigation data and satellite signal measurement
The EVA-M8M can output all the GNSS broadcast data upon reception from tracked satellites. This includes all
the supported GNSS signals plus the augmentation services SBAS, QZSS and IMES. The receiver also makes
available the tracked satellite signal information, i.e. raw code phase and Doppler measurements in a form
aligned to the ETSI mobile cellular location services protocol (RRLP).
For more information see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2].
1.9
Odometer
The odometer function provides information on travelled ground distance (in meters) based on the position and
Doppler-based velocity output from the navigation solution. For each computed distance since the last odometer
reset, the odometer estimates a 1-sigma accuracy value. The total cumulative ground distance is maintained and
saved in the BBR memory.
The odometer feature is disabled by default. For more information see the u-blox 8 / u-blox M8 Receiver
Description Including Protocol Specification [2].
1.10 Data logging
The EVA-M8M modules can be used in data logging applications if external flash is use. The data logging feature
enables continuous storage of position, velocity and time information to an onboard SQI flash memory (at least
16 Mbit).It can also log the distance from the odometer. 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 8 / u-blox M8 Receiver Description Including Protocol Specification [2].
1.11 Geofenceing
The u-blox EVA-M8M modules support up to four circular Geofenceing areas defined on the Earth’s surface
using a 2D model. Geofencing is active when at least one Geo-fence is defined, the current status can be found
by polling the receiver. A GPIO pin can be nominated to indicate status to e.g. wake up a host on activation.
1.12 Message Integrity Protection
The EVA-M8M modules provide a function to detect third party interference with the UBX message steam sent
from receiver to host. The security mechanism ‘signs’ nominated messages via a subsequent UBX message. This
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message signature is then compared with one generated by the host to determine if the message data has been
altered. The signature algorithm seed can use one fixed secret ID-key set by eFuse in production and a dynamic
ID-key set by the host, enabling users to detect ‘man-in-the-middle’ style attacks.
1.13 Spoofing Detection
Spoofing is a process whereby a malicious third party tries to control the reported position via a ‘fake’ GNSS
broadcast signal. This may result in the form of reporting incorrect position, velocity or time. To combat against
this, the EVA-M8M modules include spoofing detection measures to alert the host when signals appear to be
suspicious. The receiver combines a number of checks on the received signals looking for inconsistencies across
several parameters.
This feature does not guarantee to detect all spoofing attacks.
1.14 EXTINT: External interrupt
EXTINT is an external interrupt pin with fixed input voltage thresholds with respect to VCC_IO. 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 8 / u-blox M8
Receiver Description including Protocol Specification [2] and the EVA-8M / EVA-M8 Hardware Integration
Manual [1].
1.14.1 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.
1.14.2 Aiding
The EXTINT pin can be used to supply time or frequency aiding data to the receiver.
For time aiding, the time can be supplied using hardware time synchronization where an accurate time pulse is
connected 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, and
providing the applied frequency value to the receiver using UBX messages.
1.15 TIMEPULSE
A configurable time pulse signal is available with u-blox EVA-M8M series modules.
The TIMEPULSE output generates pulse trains synchronized with GPS 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 8 /
u-blox M8 Receiver Description including Protocol Specification [2].
1.16 Protocols and interfaces
Protocol
Type
NMEA 0183, version 4.0 (V2.3 or V4.1 configurable )
Input/output, ASCII,
UBX
Input/output, binary, u-blox proprietary
RTCM
Input, messages 1, 2, 3, 9
Table 4: Available Protocols
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2
All protocols are available on UART, USB, DDC (I C compliant) and SPI. For specification of the various protocols
see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2].
1.17 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.
1.17.1 UART
The EVA-M8M modules make use of a UART interface, which can be used for communication to a host. It
supports configurable baud rates. For supported transfer rates see the u-blox 8 / u-blox M8 Receiver Description
Including Protocol Specification [2].
Designs must allow access to the UART and the SAFEBOOT_N pin for future service, updates and
reconfiguration.
1.17.2 USB
A USB interface, which is compatible to USB version 2.0 FS (Full Speed, 12 Mbit/s), can be used for
communication as an alternative to the UART. The pull-up resistor on pin USB_DP is integrated to signal a fullspeed device to the host. The VDD_USB pin supplies the USB interface. The u-blox USB (CDC-ACM) driver
supports Windows Vista plus Windows 7 and 8 operating systems. A separate driver (CDC-ACM) is not required
for Windows 10 which has a built-in USB-serial driver. However, plugging initially into an internet connected
Windows 10 PC, will down-load the u-blox combined sensor and VCP driver package.
USB drivers can be down-loaded from the u-blox web site, www.u-blox.com.
1.17.3 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 125 kB/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 to ground (see section 1.17.6). In this case the
DDC interface for data communication is no longer available.
1.17.4 Display Data Channel (DDC)
2
An I C compliant DDC interface is available for communication with an external host CPU. The interface can be
operated in slave mode only. The DDC protocol and electrical interface are fully compatible with Fast-Mode of
2
the I C industry standard. Since the maximum SCL clock frequency is 400 kHz, thus the maximum transfer rate is
400 kbit/s.
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 while serving
interrupts, so real bit rates may be slightly lower.
1.17.5 Serial Quad Interface (SQI)
An SQI is available in EVA-M8M series for connecting the modules with an optional external flash memory. The
flash memory is required for firmware updates and for data logging. In addition, it can be used to store
configurations and to save AssistNow Offline and AssistNow Autonomous data.
For more information see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
1.17.6 Interface selection (D_SEL)
At startup the D_SEL pin determines which data interfaces are used for communication. If D_SEL is set to logical
“1” or is not connected, UART and DDC become available. If D_SEL is set to logical “0”, i.e. connected to GND,
the EVA-M8M modules can communicate to a host via SPI.
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16
(D_SEL)=”1”
(left open)
UART TXD
(D_SEL)=”0”
(connected to GND)
SPI MISO
15
29
UART RXD
DDC SCL
SPI MOSI
SPI CLK
30
DDC SDA
SPI CS_N
Pin #
Table 5: Data interface selection by D_SEL
1.18 Configurable Input Output pins
Configuration settings can be modified for several Input/Output pins with either UBX configuration messages or
pin selection. This flexible configuration options allow the receivers to be optimally configured for specific
applications requirements. The modified settings remain either permanent or effective until power-down or reset
depending on the case. Customer can activate or remap the following pins on EVA-M8M series:
1. Selection of either DDC or UART TXD/RXD pins interface using D_SEL pin. See section 1.17.6.
2. Selection of antenna supervision pins. See section 1.23.
3. Selection of external interrupt pins. See section 1.14.
4. Configuration of Timepulse. See section 1.15.
For more information see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
1.19 Safe Boot Mode
If Pin33 (SAFEBOOT_N) is set to logical “0” at startup, the EVA-M8M receivers enter Safe Boot Mode. In this
mode the receiver does not calculate positioning data, but is in a defined state that allows such actions as
programming the flash memory in production, or recovering a corrupted flash memory.
For more information about Safe Boot Mode see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
1.20 System reset
The EVA-M8M series provides a RESET_N pin to reset the system and Real-Time Clock (RTC). The RESET_N pin
should be only used in critical situations to recover the system.
1.21 Clock generation
1.21.1 Oscillator
The EVA-M8M modules use a 26 MHz crystal oscillator for lower system costs. Like other u-blox GNSS modules,
the EVA-M8M modules use components selected for functioning reliably in the field over the full operating
temperature range.
1.21.2 Real-Time Clock (RTC)
The use of the RTC Clock may be optionally used to maintain time in the event of power failure at VCC_IO. The
RTC is required for hot start, warm start, AssistNow Autonomous, AssistNow Offline and some Power Save
Mode operations.
The use of the RTC is optional. The time information can be generated in one of these ways:
·
by connecting to an external RTC crystal (for lower battery current – default mode)
·
by sharing from another RTC oscillator used within the application (for lowest system costs and smallest size)
·
from deriving RTC time from the onboard 26 MHz crystal oscillator (for low system costs and small size)
If the main supply voltage fails and a battery is connected to V_BCKP, parts of the baseband section 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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For more information about crystal operation and configuration, see the EVA-8M / EVA-M8 Hardware
Integration Manual [1].
If neither backup RAM nor RTC are used, the backup battery is not needed and V_BCKP should be
connected to VCC_IO.
1.22 Power Management
u-blox M8 technology offers a power-optimized architecture with built-in autonomous power saving functions
to minimize power consumption at any given time. Furthermore, the receiver can be used in two operating
modes: Continuous mode for best performance or Power Save Mode for optimized power consumption. In
addition, a high efficiency DC/DC converter is integrated to allow low power consumption even for higher main
supply voltages.
1.22.1 DC/DC converter
EVA-M8M modules integrate a DC/DC converter, allowing reduced power consumption by up to 50%,
especially when using a main supply voltage above 2.5 V.
For more information, see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
1.22.2 Power Mode Setup
The EVA-M8M modules can be configured to run in either continuous or a choice of Power Save mode
configurations. A template of power mode settings can be used to easily select typical power mode setups to
cover the majority of users’ requirements.
For specific power saving applications, the user has the option to fully configure via the power save mode
configuration. More information, see section 1.22.4.
The EVA-M8M module’s power mode setup offers a choice of continuous operation and preset Power Save
Mode Configurations.
·
Continuous (default) mode for best GNSS performance vs power consumption
·
Continuous with no compromise in power consumption
·
A 1 Hz cyclic tracking mode for aggressive power reduction
·
Choice of 2 or 4 Hz cyclic tracking modes for typical wearable applications
·
ON/OFF interval mode
7
1.22.3 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 of each satellite in view is valid
1.22.4 Power Save Mode
For specific power saving applications outside the typical preset power mode setups, users can configure a
tailored Power Save Mode.
7
Single GNSS constellation configuration only
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Power Save Mode provides two dedicated methods, 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.
For more information about power management strategies, see the u-blox 8 / u-blox M8 Receiver
Description Including Protocol Specification [2].
1.23 Antenna
8
9
The EVA-M8M modules are designed for use with passive and active antennas.
Parameter
Specification
Antenna Type
Passive and active antenna
Active Antenna Recommendations
Minimum gain
Maximum gain
Maximum noise figure
For Passive antenna, an external LNA is mandatory to achieve
the performance specified in this document
15 dB (to compensate signal loss in RF cable)
50 dB
2 dB
Table 6: Antenna recommendations and specifications for EVA-M8M modules
1.23.1 Active antenna control (ANT_OFF)
The ANT_OFF Pin can be used to turn on and off an external LNA or an active antenna. This reduces power
consumption in Power Save Mode (Backup mode). This pin is available in EVA-M8M modules.
ANT_OFF pin polarity can be changed. For more information about active antenna control, see the EVA-8M
/ EVA-M8 Hardware Integration Manual [1].
1.23.2 Active Antenna supervisor and short circuit detection
An antenna supervisor is available with the EVA-M8M modules and requires external components. The antenna
supervisor enables the receiver to detect short circuits at the active antenna using the ANT_OFF and ANT_OK
pins (activated per default) and to shut down the voltage bias immediately. The antenna supervisor can be
extended to also detect condition of open circuit by activating the ANT_DET pin and including external
components for antenna open circuit detection. UBX and NMEA messages are provided to report the condition
of the antenna supply. Open circuit detection can also be supported.
For more information see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
8
9
For integration EVA-M8M modules with Cellular products, see the EVA-M8M Hardware Integration Manual [1].
For information on using active antennas with EVA-M8M modules, see the EVA-M8M Hardware Integration Manual [1].
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2 Pin definition
2.1
Pin assignment
This section shows the pin assignments. Most PIOs are configurable and have shared functions. Use special care
when designing with these pins since the overall function of the device can be affected.
The default configuration of the PIOs is listed in Table 7 below.
For more information see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
Figure 2: Pin assignment of EVA-M8M
For multiple function PIOs, select the specific signal by sending the specific configuration message or by
e-fusing.
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Pin #
Name
I/O
Description
Remark
35
34
ANT_OFF
ANT_OK
O
I
Antenna control
Antenna status
Leave open if not used.
Leave open if not used.
32
D_SEL
I
Interface selector
See section1.17.6.
2
18
GND
GND
I
I
Ground
Ground
37
38
GND
GND
I
I
Ground
Ground
Inner ground pins
Inner ground pins
39
40
GND
GND
I
I
Ground
Ground
Inner ground pins
Inner ground pins
41
42
GND
GND
I
I
Ground
Ground
Inner ground pins
Inner ground pins
43
GND
I
Ground
Inner ground pins
13
12
PIO13 / EXTINT
PIO14 / ANT_DET
I
I
External interrupt
Antenna detection
Leave open if not used.
Leave open if not used.
3
4
Reserved
Reserved
I/O
I/O
Reserved
Reserved
Do not connect. Must be left open!
Do not connect. Must be left open!
10
11
Reserved
Reserved
I/O
I/O
Reserved
Reserved
Do not connect. Must be left open!
Do not connect. Must be left open!
17
Reserved
I/O
22
SQI_D0
I/O
23
SQI_CLK
I/O
24
SQI_D2
I/O
25
SQI_D1
I/O
26
SQI_CS_N
I/O
27
SQI_D3
I/O
28
Reserved
I/O
Reserved
Data line 0 to external SQI flash memory
or reserved configuration pin.
Clock for external SQI flash memory or
configuration pin.
Data line 2 to external SQI flash memory
or reserved configuration pin.
Data line 1 to external SQI flash memory
or reserved configuration pin.
Chip select for external SQI flash memory
or configuration enable pin.
Data line 3 to external SQI flash memory
or reserved configuration pin.
Reserved
33
SAFEBOOT_N
I
36
Reserved
14
1
RESET_N
RF_IN
8
9
15
Do not connect. Must be left open!
Leave open if not used.
Leave open if not used.
Leave open if not used.
Leave open if not used.
Leave open if not used.
Leave open if not used.
Do not connect. Must be left open!
I/O
Used for programming the SQI flash
memory and testing purposes.
Reserved
Leave open if not used.
Do not connect. Must be left open!
I
I
System reset
RF Input
See section 1.19.
Add external LNA and SAW if no active antenna used.
RTC_O
O
RTC Output
Leave open if no RTC Crystal attached.
RTC_I
RXD / SPI MOSI
I
I
RTC Input
Serial interface
Connect to GND if no RTC Crystal attached.
See section 1.17.6.
29
30
SCL / SPI CLK
SDA / SPI CS_N
I
I/O
Serial interface
Serial interface
See section 1.17.6.
See section 1.17.6.
31
16
TIMEPULSE
TXD / SPI MISO
O
O
Time pulse output
Serial interface
Leave open if not used.
See section 1.17.6.
5
USB_DM
I/O
USB data
Leave open if not used.
6
21
USB_DP
V_BCKP
I/O
I
USB data
Backup supply
Leave open if not used.
19
20
VCC
VCC_IO
I
I
Main supply
I/O Supply
7
VDD_USB
I
USB Interface power
Connect to GND if not used.
Table 7: EVA-M8M pinout
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2.2
Pin name changes
Selected pin names have been updated to agree with a common naming convention across u-blox modules. The
pins have not changed their operation and are the same physical hardware but with updated names. The table
below lists the pins that have changed name along with their old and new names.
No
Previous Name
New name
7
V_USB
VDD_USB
15
RX / MOSI
RXD / SPI MOSI
16
TX / MISO
TXD / SPI MISO
26
SQI_CS
SQI_CS_N
29
SCL / SCK
SCL / SPI CLK
30
SDA / CS_N
SDA / SPI CS_N
Table 8: Pin name changes
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3 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 limiting values 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 regarding power management see the EVA-8M / EVA-M8 Hardware Integration Manual
[1].
3.1
Absolute maximum rating
Symbol
Parameter
Min
Max
Unit
VCC
VCC_IO
Supply voltage
Supply voltage I/O ring
–0.5
–0.5
3.6
3.6
V
V
VDD_USB
V_BCKP
Supply voltage USB
Supply voltage baseband backup core
–0.5
–0.5
3.6
3.6
V
V
Vi RTC
Vi DIG
Input voltage on RTC_I
Input voltage on Configurable Inputs , RESET_N
–0.5
–0.5
1.6
VCC_IO+0.5
V
V
Prfin
RF Input power on RF_IN
+15
dBm
Ptot
Ts
Total power dissipation
Storage temperature
500
+105
mW
°C
–40
Table 9: 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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3.2
Operating conditions
The test conditions specified in Table 10 apply to all characteristics defined in this section.
Symbol
Parameter
Min
Typical
Max
Unit
Tamb
GND
Ambient temperature
Ground
-40
+25
0
+85
°C
V
VCC
V_BCKP
Core supply voltage
Backup battery supply voltage
3.3
3.3
V
V
VCC_IO
VDD_USB
Supply voltage I/O ring
Supply voltage USB
3.3
3.3
V
V
NFtot
Receiver Chain Noise Figure
5.0
dB
Remarks
Table 10: Test 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.
3.2.1 DC electrical characteristic
For Power Management Unit (PMU) block diagrams, see the EVA-8M / EVA-M8 Hardware Integration
Manual [1].
Symbol
Parameter
Min
Typical
Max
Unit
VCC_IO
VDD_USB
Supply voltage for PIOs and input voltage for LDO_B and LDO_X
Supply voltage USB
1.65
3.0
3.3
3.3
3.6
3.6
V
V
V_BCKP
VCC
Input voltage for LDO_B and LDO_X (backup mode)
Input voltage
1.4
1.65
3.6
3.6
V
V
Max
Unit
0
0.2*VCC_IO
nA
V
0.7*VCC_IO
VCC_IO+0.5
0.4
V
V
Table 11: Power supply pins
Symbol
Parameter
Ileak
Vil
Leakage current input pins
Low level input voltage
Vih
Vol
High level input voltage
Low level output voltage
for TXD/SPI MISO, RXD/SPI MOSI ,
SDA/SPI CS_N, SCL/SPI CLK,
D_SEL, TIMEPULSE, PIO13/EXTINT,
PIO14/ANT_DET, ANT_OK,
ANT_OFF
High level output voltage
for TXD/SPI MISO, RXD/SPI MOSI ,
SDA/SPI CS_N, SCL/SPI CLK,
D_SEL, TIMEPULSE, PIO13/EXTINT,
PIO14/ANT_DET, ANT_OK,
ANT_OFF
Pull-up resistor for SDA/SPI CS_N,
SCL/SPI CLK, TIMEPULSE,
PIO13/EXTINT, PIO14/ANT_DET,
RESET_N
Pull-up resistor for TXD/SPI MISO,
RXD/SPI MOSI, D_SEL, ANT_OK,
ANT_OFF
Voh
Rpu
Rpu
Condition
Min
Typical
<1
Iol = 4 mA
Ioh = 4 mA
VCC_IO-0.4
V
11
kW
115
kW
Table 12: Digital IO pins
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Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
Ileak
Leakage current input pins
Vil
Low level input voltage
VDD_USB >= 3.0 V
0
1
µA
0.8
V
Vih
High level input voltage
VDD_USB >= 3.0 V
2.0
Vol
Low level output voltage
RL = 1.425 kW to VDD_USB,
VDD_USB >= 3.0 V, 27 W
external series resistor
Voh
High level output voltage
RL = 14.25 kW to GND,
VDD_USB >= 3.0, 27 W external
series resistor
Rpui
Pull-up resistor, Idle State
870
900
950
W
Rpuo
Pull-up resistor, Operational State
1400
1490
1600
W
Min.
Typ.
Max.
Unit
0.35
0.9
sec
350
mVpp
100
kW
12
pF
VDD_USB
V
0.3
V
2.8
V
Table 13: USB pins
3.2.2
Baseband parameters
Symbol
Parameter
Condition
RTC_Fxtal
RTC crystal resonant frequency
RTC_T_start
RTC startup time
0.2
RTC_Amp
32768 Hz OSC oscillation
amplitude
50
RTC_ESR
32768 Hz Xtal equivalent series
resistance
RTC_CL
RTC integrated load capacitance
32768
4
ESR = 80 kW
7
Hz
Table 14: Baseband parameters
3.3
Indicative power requirements
Table 15 lists examples of the total system supply current for a possible application.
The values in Table 15 are provided for customer information only as an example of typical current
requirements. The 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
10
Conditions
Backup battery current 12
Typ
GPS / QZSS /SBAS
Iccp
12
Average supply current 11
Typ
GPS & GLONASS
Icc Acquisition
VCC_IO = VCC = 3 V
25
19
Icc Tracking
(Continuous mode)
VCC_IO = VCC = 3 V
22
17
Icc Tracking
(Power Save mode
/ 1 Hz)
VCC_IO = VCC = 3 V
5.3
4.7
I_BCKP
using the RTC
crystal
HW Backup mode,
VCC_IO = VCC = 0 V
15
Max
Units
67
mA
mA
mA
mA
µA
10
Use this figure to dimension maximum current capability of power supply. Measurement of this parameter with 1 Hz bandwidth.
Simulated constellation of 8 satellites is used. All signals are at -130 dBm. VCC= 3 V
Average current from start-up until the first fix.
12
Use this figure to determine required battery capacity.
11
12
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Parameter
SW Backup current
Typ
Typ
GPS & GLONASS
GPS / QZSS /SBAS
Symbol
Conditions
Max
Units
I_BCKP
using the 26 MHz
XTO in “single
crystal” operation
I_SWBCKP
using the RTC
crystal
I_SWBCKP
using the 26 MHz
XTO in “single
crystal” operation
HW Backup mode,
VCC_IO = VCC = 0 V
100
µA
SW Backup mode,
VCC_IO = VCC = 3 V
20
µA
SW Backup mode,
VCC_IO = VCC = 3 V
105
µA
Table 15: Currents to calculate the indicative power requirements
For more information about power requirements, see the EVA-8M / EVA-M8 Hardware Integration Manual [1].
All values in Table 15 are measured at 25°C ambient temperature.
For more information on how to noticeably reduce current consumption, see the Power Management
Application Note [5].
3.4
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 16: Symbol description
Figure 3: SPI timing diagram
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3.4.1 Timing recommendations
The SPI timing recommendations are given below.
Parameter
Description
Recommendation
tINIT
Initialization Time
tDES
Deselect Time
10 ms
1 ms.
tbit
tbyte
Minimum bit time
Minimum byte period
180 ns (5.5 MHz max bit frequency)
8 ms (125 kHz max byte frequency)
Table 17: 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.
3.5
DCC 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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4 Mechanical specification
Figure 4: Mechanical drawing for EVA-M8M (LGA43)
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5 Reliability tests and approvals
5.1
Reliability tests
Qualification requirements according JEDEC standards JESD47 "Stress-Test-Driven Qualification of Integrated
Circuits".
5.2
Approvals
Products marked with this lead-free symbol on the product label comply with the
"Directive 2002/95/EC and Directive 2011/65/EU of the European Parliament and the
Council on the Restriction of Use of certain Hazardous Substances in Electrical and
Electronic Equipment" (RoHS).
EVA-M8M modules are RoHS compliant and green (no halogens).
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6 Product handling
6.1
Packaging
EVA-M8M series modules are delivered as hermetically sealed, reeled tapes in order to enable efficient
production, production lot set-up and tear-down. For more information about packaging, see the u-blox
Package Information Guide [3].
6.1.1 Reels
EVA-M8M series modules are deliverable in quantities of 500 pcs on a reel. The EVA-M8M modules are shipped
on Reel Type D, as described in the u-blox Package Information Guide [3].
6.1.2 Tapes
Figure 5 shows the feed direction and the orientation of the EVA-M8M positioning modules on the tape. The
positioning modules are placed such that the pin 1 is at the upper right for the LGA43. The dimensions of the
tapes are specified in Figure 6.
Figure 5: Orientation of EVA-M8M modules on the tape
Figure 6: EVA-M8M tape dimensions
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6.2
Moisture Sensitivity Levels
The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required. EVA-M8M
modules are rated at MSL level 3.
For MSL standard see IPC/JEDEC J-STD-020, which can be downloaded from www.jedec.org.
For more information regarding MSL see the u-blox Package Information Guide [3].
6.3
ESD handling precautions
EVA-M8M positioning modules contain highly sensitive electronic circuitry and 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,
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 ~10pF, 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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7 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 (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 (no UBX) messages
have been activated at start-up:
GGA, GLL, GSA, GSV, RMC, VTG, TXT
USB Power Mode: Bus Powered
USB Output
UART Input
USB Input
DDC
SPI
TIMEPULSE
( 1 Hz Nav)
9600 Baud, 8 bits, no parity bit, 1 stop bit, Autobauding disabled
Automatically accepts following protocols without need of explicit configuration:
UBX, NMEA, RTCM
The GNSS receiver supports interleaved UBX and NMEA messages.
Automatically accepts following protocols without need of explicit configuration:
UBX, NMEA, RTCM
The GNSS receiver supports interleaved UBX and NMEA messages.
USB Power Mode: Bus Powered
Fully compatible with the I2C industry standard, available for communication with an external host CPU or
u-blox cellular modules, operated in slave mode only. Default messages activated.
NMEA and UBX are enabled as input messages, only NMEA as output messages.
Maximum bit rate 400 kb/s.
Allow communication to a host CPU, operated in slave mode only. Default messages activated. SPI is not
available in the default configuration
1 pulse per second, synchronized at rising edge, pulse length 100 ms
Table 18: Default messages
Please refer to the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2] for
information about further settings.
UBX-160007405 - R02
Production Information
Default messages
Page 29 of 32
EVA-M8M - Data Sheet
8 Labeling and ordering information
8.1
Product labeling
The labeling of u-blox EVA form factor GNSS modules includes important product information. The location of
the EVA-M8M product type number is shown in Figure 7.
Pin 1 Marking
U-BLOX
EVAM8Mx10 = Product identification
EVAM8M010 stands for product type number: EVA-M8M-0-10
EVAM8M110 stands for product type number: EVA-M8M-1-10
T-Rff00SS
LLLLLLL
YYWWZZX
= Revision
= Lot number
= Production date code
Figure 7: Description of EVA-M8M product label
8.2
Explanation of product codes
Three different product code formats are used. The Product Name is used in documentation such as this data
sheet and identifies all u-blox M8 products, independent of packaging and quality grade. The Ordering Code
includes packaging and quality, while the Type Number includes the hardware and firmware versions. Table 19
below details these three different formats:
Format
Structure
Product Name
Ordering Code
PPP-TGV-N
PPP-TGV-N
Type Number
PPP-TGV-N-XX
Table 19: Product code formats
The parts of the product code are explained in Table 20.
Code
Meaning
Example
PPP
TG
Product Family
Technology & Generation
EVA
M8 = u-blox M8
V
N
Variant
Option/ Quality Grade
XX
Product Detail
Function set (A-Z)
Describes standardized functional element or quality grade
0 = Default variant, A = Automotive
Describes product details or options such as hardware and software revision, cable length, etc.
Table 20: Part identification code
8.3
Ordering codes
Ordering No.
Product
EVA-M8M-0
EVA-M8M-1
u-blox M8 GNSS LGA Module, crystal, ROM, green, 7.0x7.0 mm, 500 pcs/reel (Default: GPS + GLONASS)
u-blox M8 GNSS LGA Module, crystal, ROM, green, 7.0x7.0 mm, 500 pcs/reel (Default: GPS + BeiDou)
Table 21: Product ordering codes for professional grade positioning modules
Product changes affecting form, fit or function are documented by u-blox. For a list of Product Change
Notifications (PCNs) see our website.
UBX-160007405 - R02
Production Information
Labeling and ordering information
Page 30 of 32
EVA-M8M - Data Sheet
Related documents
[1]
EVA-8M / EVA-M8 Hardware Integration Manual, Docu. No. UBX-16010593
[2]
u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification (Public version), Docu. No.
UBX-13003221
[3]
u-blox Package Information Guide, Docu. No. UBX-14001652
[4]
[5]
RTCM 10402.3 Recommended Standards for Differential GNSS, Ver. 2.3, RTCM AUG. 20, 2001
Power Management Application Note, Docu. No. UBX-13005162
[6]
Radio Resource LCS Protocol (RRLP), (3GPP TS 44.031 version 11.0.0 Release 11)
For regular updates to u-blox documentation and to receive product change notifications please register on
our homepage.
Revision history
Revision
Date
Name
Status / Comments
R01
09-Jun-2016
njaf
Advance Information status
R02
21-Jul-2016
julu
Production Information status
UBX-160007405 - R02
Production Information
Related documents
Page 31 of 32
EVA-M8M - 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 (Chongqing):
Phone:
E-mail:
Support:
+86 23 6815 1588
info_cn@u-blox.com
support_cn@u-blox.com
Regional Office China (Shanghai):
Phone:
E-mail:
Support:
+86 21 6090 4832
info_cn@u-blox.com
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 80 4050 9200
E-mail:
info_in@u-blox.com
Support: support_in@u-blox.com
Regional Office Japan (Osaka):
Phone:
E-mail:
Support:
+81 6 6941 3660
info_jp@u-blox.com
support_jp@u-blox.com
Regional Office Japan(Tokyo):
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-160007405 - R02
Production Information
Contact
Page 32 of 32
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