NEO-M8P u-blox M8 High Precision GNSS Modules Data Sheet Highlights Centimeter-level GNSS positioning for the mass market Integrated Real Time Kinematics (RTK) for fast time-to-market Small, light, and energy-efficient RTK module Complete and versatile solution due to base and rover variants World-leading GNSS positioning technology www.u-blox.
NEO-M8P - Data Sheet 3 Configuration management ...................................................................................... 16 3.1 4 Interface selection (D_SEL) .................................................................................................................. 16 Electrical specification ................................................................................................ 17 4.1 Absolute maximum rating ...............................................................
NEO-M8P - Data Sheet 1 Functional description 1.1 Overview The NEO-M8P modules combine the high performance u-blox M8 positioning engine with u-blox’s Real Time Kinematic (RTK) technology. The NEO-M8P provides cm-level GNSS performance designed to meet the needs of unmanned vehicles and other machine control applications requiring accurate guidance.
NEO-M8P - Data Sheet 1.3 Performance Parameter Specification Receiver type 72 channel u-blox M8 engine GPS L1C/A, GLONASS L1OF, BeiDou B1I Accuracy of time pulse signal RMS 99% Frequency of time pulse signal Operational limits 1 Time-To-First-Fix 2 Sensitivity 4 Max navigation update rate 30 ns 60 ns 0.
NEO-M8P - Data Sheet 1.4 Block diagram Figure 1: NEO-M8P block diagram 1.5 GNSS The NEO-M8P positioning modules are concurrent GNSS receivers that can receive and track multiple GNSS systems. NEO-M8P receivers are configured by default for concurrent GPS and GLONASS reception. A combination of GPS and BeiDou can also be used. If RTK update rate is a key factor, the receiver should be configured to use only GPS. 1.5.
NEO-M8P - Data Sheet 1.6 RTK operation Figure 2: The M8P modules work as a pair, where the Base provides a stream of RTCM messages to the Rover Under RTK operation, the M8P modules operate as a pair consisting of a Rover and a Base. The Rover needs access to a stream of RTCM 3 messages before it can enter RTK mode and before centimeter level accuracies can be reached. The various concepts are explained in detail below. 1.6.
NEO-M8P - Data Sheet 1.6.2 Base station modes (NEO-M8P-2) By default the Base station device will begin operation in standard mode without any correction stream output. The NEO-M8P-2 can be set to use previously surveyed coordinates of the Base antenna position or set to surveyin its location. The RTCM correction stream will only be output after these modes are successfully set. 1.6.2.1 Fixed stationary mode The NEO-M8P-2 can be set to use previously surveyed coordinates of the Base antenna position.
NEO-M8P - Data Sheet 1.8 Assisted GNSS (A-GNSS) Supply of aiding information, such as ephemeris, almanac, approximate position and time, will reduce the time to first fix significantly and improve the acquisition sensitivity. The NEO-M8P products support the u-blox AssistNow Online and are OMA SUPL compliant. 1.8.1 AssistNowTM Online With AssistNow Online, an internet-connected GNSS device downloads assistance data from u-blox’s AssistNow Online Service at system start-up.
NEO-M8P - Data Sheet distance from an odometer function. The logged data 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], [3]. 1.11 Host Interface Signature The host interface signature mechanism provides protection against unauthorized tampering of the message data sent from the receiver to its host.
NEO-M8P - Data Sheet 1.14 Protocols and interfaces Protocol Type NMEA 0183 V4.0 (V2.1,V2.3 and V4.1 configurable) Input/output, ASCII UBX RTCM 3.2 Input/output, binary, u-blox proprietary Input , for RTK RTCM 3.2 Output (NEO-M8P-2 only) Table 4: 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 8 / u-blox M8 Receiver Description Including Protocol Specification [2], [3].
NEO-M8P - Data Sheet 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], [3] and the NEO-M8P Hardware Integration Manual [1]. 1.17 Clock generation 1.17.1 Oscillators The NEO-M8P GNSS modules incorporate a TCXO for accelerated weak signal acquisition, faster start and reacquisition.
NEO-M8P - Data Sheet 2 Pin definition 2.
NEO-M8P - Data Sheet 3 Configuration management Configuration settings can be modified with UBX configuration messages. The modified settings remain effective until power-down or reset. Settings can also be saved in battery-backed RAM, Flash or both using the UBX-CFGCFG message. If settings have been stored in battery-backed RAM then the modified configuration will be retained as long as the backup battery supply at V_BCKP is not interrupted.
NEO-M8P - 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.
NEO-M8P - Data Sheet 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 Min Typical Max Units Power supply voltage VCC 2.7 3.0 3.6 V Supply voltage USB VDD_USB 3.0 3.3 3.6 V Backup battery voltage V_BCKP 1.4 3.
NEO-M8P - Data Sheet For more information on how to noticeably reduce current consumption, see the Power Management Application Note [5]. 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 12: Symbol description Figure 5: SPI timing diagram 4.4.
NEO-M8P - Data Sheet 5 Mechanical specifications Figure 6: Dimensions For information about the paste mask and footprint, see the NEO-M8P Hardware Integration Manual [1].
NEO-M8P - Data Sheet 6 Reliability tests and approvals 6.1 Reliability tests The NEO-M8P 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.
NEO-M8P - Data Sheet 7 Product handling & soldering 7.1 Packaging The NEO-M8P GNSS 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 [4]. 7.1.1 Reels The NEO-M8P GNSS modules are deliverable in quantities of 250 pcs on a reel. The NEO-M8P receivers are shipped on Reel Type B, as specified in the u-blox Package Information Guide [4]. 7.1.
NEO-M8P - Data Sheet 7.2 Shipment, storage and handling For important information regarding shipment, storage and handling see the u-blox Package Information Guide [4]. 7.2.1 Moisture Sensitivity Levels The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required. The NEO-M8P modules are rated at MSL level 4. For MSL standard see IPC/JEDEC J-STD-020, which can be downloaded from www.jedec.org.
NEO-M8P - Data Sheet Related documents [1] NEO-M8P Hardware Integration Manual, Docu. No. UBX-15021148 [2] u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification (Public version), Docu. No. UBX-13003221 [3] Protocol Specification Addendum for HPG1.11, Docu. No. UBX-16004304 [4] [5] u-blox Package Information Guide, Docu. No. UBX-14001652 Power Management Application Note, Docu. No. UBX-13005162 [6] MultiGNSS-Assistance UserGuide, Docu. No. UBX-13004360 [7] RTCM 10403.
NEO-M8P - 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: +1 703 483 3180 E-mail: 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 u-blox AG Phone: +41 44 722 74 44 E-mail: info@u-blox.com Support: support @u-blox.com Technical Support: Phone: E-mail: +1 703 483 3185 support @u-blox.
