Neoway G2 Hardware User's Manual
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Neoway G2 Hardware User's Manual

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G2
Hardware User Guide
Issue 2.0
Date2019-02-13
Neoway Product Document

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Summary of Contents for Neoway G2

  • Page 1 Hardware User Guide Issue 2.0 Date2019-02-13 Neoway Product Document...
  • Page 2 THIS GUIDE PROVIDES INSTRUCTIONS FOR CUSTOMERS TO DESIGN THEIR APPLICATIONS. PLEASE FOLLOW THE RULES AND PARAMETERS IN THIS GUIDE TO DESIGN AND COMMISSION. NEOWAY WILL NOT TAKE ANY RESPONSIBILITY OF BODILY HURT OR ASSET LOSS CAUSED BY IMPROPER OPERATIONS. THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE DUE TO PRODUCT VERSION UPDATE OR OTHER REASONS.

  • Page 3: Table Of Contents

    6.3 Packaging ........................... 15 6.3.1 Tape & Reel Packaging ..................... 15 6.3.2 Mositure-Sensitive ......................17 7 Application Design and SMT ..............18 7.1 G2 Foot Print ..........................18 7.2 Recommended Footprint ......................19 7.3 Stencil ............................19 7.4 Solder Paste ..........................19 7.5 Reflow Profile ..........................
  • Page 4 Hardware User Guide Table of Figures Figure 1-1 Block diagram ........................2 Figure 2-1 G2 pin definition (top view) ....................4 Figure 3-1 UART connection ......................9 Figure 3-2 1PPS timing ........................9 Figure 6-1 G2dimensions (Unit: mm) ....................14 Figure 6-2 G2label ...........................
  • Page 5 Table 2-2 Pin definition ........................5 Table 3-1 Power status, clock status, and current in different work modes ........8 Table 4-1 G2 ceramic patch antenna ....................10 Table 5-1 G2 extreme operating voltage ..................12 Table 5-2 G2recommended operating voltage ................. 12 Table 5-3 Temperature feature ......................
  • Page 6 Hardware User Guide About This Document Scope This document is applicable to G2 series. It defines the features, indicators, and test standards of the G2 module and provides reference for the hardware design of each interface. Audience This document is intended for system engineers (SEs), development engineers, and test engineers.
  • Page 7 Hardware User Guide Means note or tips for readers to use the module Related Documents Neoway_G2_Datasheet Neoway_G2_Product_Specifications Neoway_G2/G7A_Receiver_Command_Mannual Neoway_G2_EVK_User_Guide Copyright © Neoway Technology Co., Ltd...

  • Page 8: About G2

    Hardware User Guide 1 About G2 G2 is a GNSS module that supports BDS B1, GPS L1, and GLONASS L1. It adopts a unified chipset integrating baseband and RF and embeds LNA and ceremic patch antenna. This architecture facilitates the application design and reduces the cost. It is an optimal navigation solution to demands for high sensitivity, low power consumption, and low cost in different navigation devices 1.1 Overview...

  • Page 9: Specifications

    Typ. Unit Horizontal <2 Positioning precision (open air) Elevation <4.5 Speed precision <0.1 Capturing Channel quantity Tracking Cold start <32 TTFF Hot start (@-130dBm) Recapture Cold start -148 Sensitivity Hot start -156 Recapture -160 Copyright © Neoway Technology Co., Ltd...
  • Page 10 Hardware User Guide Tracking -162 9600bps Baud rate 4800 9600 2560400 default Update frequency 1Hz by default VBAT Operating voltage VBCKUP 3.3/3.0 Capturing 3.3 V Current Tracking 3.3 V (@instrument) Idle μA 3.3 V Copyright © Neoway Technology Co., Ltd...

  • Page 11: Pad Layout And Pin Definition

    Hardware User Guide 2 Pad Layout and Pin Definition There are 13 pins on G2 and their pads are in LCC package. 2.1 Pad Layout Figure 2-1 shows the pad layout of G2. Figure 2-1 G2 pin definition (top view)

  • Page 12: Pin Definition

    3,8,11,12,13 grounded. GPIO Pulled up by default. 1PPS Pulse per second Leave it floating if not used. UART UART_TXD Data transmitting Used for data transmission. Leave it floating if not used. UART_RXD Data receiving Copyright © Neoway Technology Co., Ltd...
  • Page 13 Hardware User Guide I2C_SDA DI/DO I2C data I2C_SCL I2C clock Others RESERVED Reserved pins Leave it floating if not used. Copyright © Neoway Technology Co., Ltd...

  • Page 14: Application Interfaces

    Hardware User Guide 3 Application Interfaces G2 provides power supply interface, UART interface, I2C interface, and 1PPS interface. This chapter describes how to use each interface and the design precautions. 3.1 Power Supply Signal Function Remarks VBAT Main power supply 2.7V~3.6V(Typ:3.3V)

  • Page 15: Uart

    The default baud rate is 9600bps. Data format: 1 start bit, 8 data bits, 1 stop bit, no checksum bit. For more information, see Neoway_G2/G7A_Receiver_Commands_Manual. Figure 3-1 shows the connection of the UART interface. If the logic level of UART and MCU does not match, add a level shifter. Copyright © Neoway Technology Co., Ltd...

  • Page 16: I2C

    1PPS signal is output several seconds after the module fixes position. Figure 3-2 shows the timing of 1PPS signal. Figure 3-2 1PPS timing Second Boundry 1PPS TX/RX Parity Bit Stop Bit New Start Bit Start bit 40ms D0..D7 Copyright © Neoway Technology Co., Ltd...

  • Page 17: Antenna Interface

    2dBic 4.2 PCB Design GNSS signals are easy to be affected by external factors. To obtain the optimal performance of the G2 module, follow the recommendations below in your application design: Ensure that the ceramic patch antenna is upwards and no conduction material is placed above it.
  • Page 18 Ensure that the module is surrounded by ground and the ground area should not be less than  30mm×30mm. Ensure that the G2 module isat least 10 mm away from other metal components. Otherwise, the  antenna performance will be affected.

  • Page 19: Electrical Feature And Reliability

    5 Electrical Feature and Reliability This chapter describes the electrical features and reliability of G2. 5.1 Electrical Features To ensure that G2 functions properly, operate it in recommended operationg conditions. 5.1.1 Extreme Operating Voltage Table 5-1 G2 extreme operating voltage...

  • Page 20: Temperature

    If the module works in an environment where the temperature exceeds the thresholds of the operating temperature range, some of its RF performance indicators might be worse but it can still work properly. 5.3 ESD Protection Humidity: 45%
Temperature: 25 ° C Table 5-4 G2 ESD feature Testing Point Contact Discharge Air Discharge VBAT ±...

  • Page 21: Mechanical Features

    Hardware User Guide 6 Mechanical Features This chapter describes the mechanical features of G2. 6.1 Dimensions Figure 6-1 G2dimensions (Unit: mm) Copyright © Neoway Technology Co., Ltd...

  • Page 22: Label/Apperance

    Figure 6-2 G2label 6.3 Packaging G2 modules are packed in sealed bags on delivery to guarantee a long shelf life. Follow the same package of the modules again in case of opened for any reasons. 6.3.1 Tape & Reel Packaging G2 in mass production are shipped in the following package.
  • Page 23 Hardware User Guide Tape Copyright © Neoway Technology Co., Ltd...

  • Page 24: Mositure-Sensitive

    Hardware User Guide Reel 6.3.2 Mositure-Sensitive G2 is a level 3 moisture-sensitive electronic elements, in compliance with IPC/JEDEC J-STD-020 standard. If the module is exposed to air for more than 48 hours at conditions not worse than 30° C/60% RH, bake it at a temperature higher than 90 degree for more than 12 hours before SMT.Or, if the indication...

  • Page 25: Application Design And Smt

    Hardware User Guide 7 Application Design and SMT G2 is introduced in LCC package. This chapter provides G2foot print, recommended PCB design and SMT information to guide users how to mount the module onto application PCB board. 7.1 G2 Foot Print Figure 7-1 G2 foot print (bottom view) Copyright ©...

  • Page 26: Recommended Footprint

    Figure 7-2 Recommended PCB footprint (top view) 7.3 Stencil The recommended stencil thickness is at least 0.12 mm to 0.15 mm. 7.4 Solder Paste Do not use a kind of solder paste different from our module technique. Copyright © Neoway Technology Co., Ltd...

  • Page 27: Reflow Profile

    220 ° C for more than 45 seconds and the peak temperature reaches 240 ° C. 7.5 Reflow Profile G2 is compatible with industrial standard reflow profile for lead-free SMT process. The reflow profile is process dependent, so the following recommendation is just a start point guideline: Only one flow is supported.
  • Page 28 Neoway will not provide warranty for heat-responsive element abnormalities caused by improper temperature control. For information about cautions in G2 storage and mounting, refer to Neoway Module Reflow Manufacturing Recommendations. To maintain and manually desolder it, use heat guns with great opening, adjust the temperature to 250 degrees (depending on the type of the solder paste), and heat the module till the solder paste is melt.

  • Page 29: Safety Recommendations

     other electronic equipment. Please follow the requirements below in application design: Do not disassemble the module without permission from Neoway. Otherwise, we are entitled to  refuse to provide further warranty. Please design your application correctly by referring to the HW design guide document and our ...

  • Page 30: A Abbreviation

    Multi-Functional Satellite Augmentation System NMEA National Marine Electronics Association Pulse Per Second Pseudo Random Noise Code QZSS Quasi-Zenith Satellite System RHCP Right Hand Circular Polarization Recommended Minimum Specific GNSS Data SBAS Satellite-based Augmentation System Surface Acoustic Wave Copyright © Neoway Technology Co., Ltd...
  • Page 31 Hardware User Guide TTFF Time To First Fix UART Universal Asynchronous Receiver & Transmitter Copyright © Neoway Technology Co., Ltd...

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