u-blox M8 Series Hardware Integration Manual
  1. Manuals
  2. Brands
  3. u-blox Manuals
  4. Control Unit
  5. M8 Series
  6. Hardware integration manual

u-blox M8 Series Hardware Integration Manual

Automotive dead reckoning modules including 3d sensors
Hide thumbs Also See for M8 Series:
Table of Contents

Advertisement

Quick Links

NEO-M8L
u-blox M8 automotive dead reckoning modules
including 3D sensors
Hardware integration manual
Abstract
This document describes the features and specifications of NEO-M8L, a high-performance
automotive dead reckoning (ADR) module with 3D sensors. The module includes the u-blox M8
concurrent GNSS engine with reception of GPS, GLONASS, BeiDou, Galileo and QZSS signals.
www.u-blox.com
UBX-16010549 - R08

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the M8 Series and is the answer not in the manual?

Questions and answers

Related Manuals for u-blox M8 Series

Summary of Contents for u-blox M8 Series

  • Page 1 Abstract This document describes the features and specifications of NEO-M8L, a high-performance automotive dead reckoning (ADR) module with 3D sensors. The module includes the u-blox M8 concurrent GNSS engine with reception of GPS, GLONASS, BeiDou, Galileo and QZSS signals. www.u-blox.com...

  • Page 2: Document Information

    The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information.

  • Page 3: Table Of Contents

    000000 NEO-M8L - Hardware integration manual Contents Document information ..........................2 Contents ................................3 Hardware description ........................... 5 1.1 Overview ................................ 5 1.2 Configuration ............................... 5 1.3 Connecting power ............................5 1.3.1 VCC: Main supply voltage ......................... 5 1.3.2 V_BCKP: Backup supply voltage ...................... 5 1.3.3 VDD_USB: USB interface power supply ..................
  • Page 4 000000 NEO-M8L - Hardware integration manual 4.5 Applications with cellular modules ......................22 Appendix ............................... 24 Recommended parts ......................... 24 Recommended antennas ......................... 25 Related documents ........................... 26 Revision history ............................27 Contact ................................28 UBX-16010549 - R08 Contents Page 4 of 28 C1-Public...

  • Page 5: Hardware Description

    For more information about the product features, see the corresponding product data sheet [1], [2], or [3] in the Related documents section. ☞ To determine which u-blox product best meets your needs, see the product selector tables on the u-blox website www.u-blox.com. 1.2 Configuration The configuration settings can be modified using UBX protocol configuration messages (see the u- blox 8 / u-blox M8 Receiver Description Including Protocol Specification [4]).

  • Page 6: Vdd_Usb: Usb Interface Power Supply

    UART. The USB_DP integrates a pull-up resistor to signal a full-speed device to the host. The VDD_USB pin supplies the USB interface. u-blox provides Microsoft® certified USB drivers for Windows Vista, Windows 7, Windows 8 and Windows 10. These drivers are available at our website, www.u-blox.com.

  • Page 7: Display Data Channel (Ddc)

    I2C industry standard. DDC pins SDA and SCL have internal pull-up resistors. For more information about the DDC implementation, see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [4]. For timing, parameters consult the I2C-bus specification [9].

  • Page 8: Tx Ready Signal

    The TX Ready signal can be mapped to UART TXD (PIO 06). The TX Ready function is disabled by default. ☞ The TX Ready functionality can be enabled and configured by AT commands sent to the u-blox cellular module supporting the feature. For more information, see the GPS Implementation and Aiding Features in u-blox wireless modules [10].

  • Page 9: D_Sel: Interface Select

    A configurable time pulse signal is available with the NEO-M8L modules. It generates pulse trains synchronized with GPS or UTC time grid with intervals configurable over a wide frequency range. For more information, see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [4].

  • Page 10: Design

    Table 2: Pinout of NEO-M8L modules 2.1.1 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.

  • Page 11: Minimal Design

    000000 NEO-M8L - Hardware integration manual 2.2 Minimal design This is a minimal design for a NEO-M8L GNSS receiver. Figure 4: NEO-M8L passive antenna design 2.3 Layout: Footprint and paste mask Figure 5 describes the footprint and provides recommendations for the paste mask for NEO-M8L modules.

  • Page 12: Antenna

    000000 NEO-M8L - Hardware integration manual 2.4 Antenna 2.4.1 Antenna design with passive antenna A design using a passive antenna requires more attention to the layout of the RF section. Typically, a passive antenna is located near electronic components; therefore, care should be taken to reduce electrical noise that may interfere with the antenna performance.

  • Page 13: Active Antenna Design

    Active antenna design powered from an external supply Figure 9: Active antenna design, direct external supply ☞ The circuit shown in Figure 9 works with all u-blox M8 modules, also with modules without VCC_RF output. UBX-16010549 - R08 Design...

  • Page 14: Automotive Dead Reckoning

    UBX message from the processor. Figure 10 shows the orientation of the IMU frame. Figure 10: NEO-M8L with IMU sensor frame ☞ More information about the ADR functionality can be found in the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [4]. 3.2 Sensor calibration The availability of “Sensor Fusion Mode”...

  • Page 15: Product Handling

    For information pertaining to reels and tapes, Moisture Sensitivity levels (MSL), shipment and storage information, as well as drying for preconditioning, see the corresponding product data sheet [1], [2], or [3] or the u-blox Package Information guide [5] in the Related documents section. Population of modules ☞...
  • Page 16 000000 NEO-M8L - Hardware integration manual  For the professional grade NEO-M8L, limit time above 217 °C liquidus temperature to 40 - 60 s. For the NEO-M8L-01A (automotive grade), the time above 217 °C should be limited to 60-150 seconds. ...
  • Page 17 000000 NEO-M8L - Hardware integration manual ☞ NEO-M8L modules must not be soldered with a damp heat process. Optical inspection After soldering the NEO-M8L modules, consider an optical inspection step to check whether:  The module is properly aligned and centered over the pads ...
  • Page 18 EMI covers. Use of ultrasonic processes Some components on the u-blox M8 module are sensitive to ultrasonic waves. Use of any ultrasonic processes (cleaning, welding etc.) may cause damage to the GNSS receiver.

  • Page 19: Eos/Esd/Emi Precautions

    000000 NEO-M8L - Hardware integration manual 4.3 EOS/ESD/EMI precautions When integrating GNSS positioning modules into wireless systems, careful consideration must be given to electromagnetic and voltage susceptibility issues. Wireless systems include components that can produce Electrical Overstress (EOS) and Electro-Magnetic Interference (EMI). CMOS devices are more sensitive to such influences because their failure mechanism is defined by the applied voltage, whereas bipolar semiconductors are more susceptible to thermal overstress.
  • Page 20 000000 NEO-M8L - Hardware integration manual  When soldering RF connectors and patch antennas to the receiver’s RF pin, be sure to use an ESD-safe soldering iron (tip). ⚠ Failure to observe these precautions can result in severe damage to the GNSS module! ESD protection measures ⚠...

  • Page 21: Safety Precautions

    000000 NEO-M8L - Hardware integration manual Small passive antennas (<2 dBic Passive antennas (>2 dBic or Active antennas (without internal filter which and performance critical) performance sufficient) need the module antenna supervisor circuits) Bandpass Bandpass Filtler Filtler LNA with appropriate ESD rating GNSS Band pass Filter: SAW or and maximum input power Ceramic with low insertion loss...

  • Page 22: Applications With Cellular Modules

    Consult the data sheet for the absolute maximum power input at the GNSS receiver. ☞ See the GPS Implementation and Aiding Features in u-blox wireless modules [10]. Isolation between GNSS and cellular antennas In multi-antenna designs, an isolation of approximately 20 dB can be reached with careful placement of the antennas.
  • Page 23 Figure 18: Measures against out-band interference ☞ For design-in recommendations in combination to Cellular operation see the Appendix. ☞ See the GPS Implementation and Aiding Features in u-blox wireless modules [10]. UBX-16010549 - R08 Product handling Page 23 of 28...

  • Page 24: Appendix

    000000 NEO-M8L - Hardware integration manual Appendix A Recommended parts Recommended parts are selected on data sheet basis only. Other components may also be used. Part Manufacturer Part ID Remarks Parameters to consider Diode ESD9R3.3ST5G Standoff voltage>3.3 V Low capacitance < 0.5 pF semiconductor ESD9L3.3ST5G Standoff voltage>3.3 V...

  • Page 25: B Recommended Antennas

    000000 NEO-M8L - Hardware integration manual B Recommended antennas Manufacturer Order no. Comments Hirschmann (www.hirschmann-car.com) GLONASS 9 M GPS+GLONASS active Taoglas (www.taoglas.com AA.160.301111 36 x 36 x 4 mm, 3-5 V 30 mA active Taoglas (www.taoglas.com AA.161.301111 36 x 36 x 3 mm, 1.8 to 5.5 V / 10 mA at 3 V active INPAQ (www.inpaq.com.tw) B3G02G-S3-01-A 2.7 to 3.9 V / 10 mA active...

  • Page 26: Related Documents

    NEO-M8L-0 (ADR4) Data sheet, UBX-15028320 NEO-M8L-01A (ADR4) Data sheet, UBX-16030843 NEO-M8L-04B (ADR4) Data sheet, UBX-18052988 u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification (NDA version), UBX- 13002887 u-blox Package Information reference guide, UBX-14001652 GPS Antenna Application Note, GPS-X-08014...

  • Page 27: Revision History

    000000 NEO-M8L - Hardware integration manual Revision history Revision Date Name Comments 13-May-2016 ghun/mpel Advance Information 28-Jun-2016 mpel Early production Information 09-Nov-2016 njaf Production Information, added NEO-M8L-01A Data Sheet reference. 28-Feb-2017 njaf Firmware update for NEO-M8L-01A-10 automotive grade variant. 09-Sep-2017 njaf Firmware version update for NEO-M8L-0-12, new PCN added.

  • Page 28: Ubx-16010549 - R08

    000000 NEO-M8L - Hardware integration manual Contact For complete contact information, visit us at www.u-blox.com. u-blox Offices North, Central and South America Headquarters Asia, Australia, Pacific Europe, Middle East, Africa u-blox America, Inc. u-blox Singapore Pte. Ltd. u-blox AG Phone:...

This manual is also suitable for:

Neo-m8lNeo-m8l-04bNeo-m8l-0-12Neo-m8l-01a-10Neo-m8l-04b-00Neo-m8l-05b-00

Table of Contents