Ublox LEA-M8T Hardware Integration Manual

Ublox LEA-M8T Hardware Integration Manual

U-blox m8 concurrent gnss modules

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LEA-M8S / LEA-M8T
u-blox M8 concurrent GNSS modules
Hardware integration manual
Abstract
This document describes the features and specifications of u-blox LEA-M8S and LEA-M8T modules.
www.u-blox.com
UBX-15030060 - R06

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Table of Contents
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Summarization of Contents

Hardware Description
Overview
Introduces the LEA-M8S and LEA-M8T modules and their capabilities.
Configuration
Explains how to modify configuration settings using UBX protocol messages.
Connecting Power
Details power supply pins (VCC, V_BCKP, VDD_USB) and their requirements.
Interfaces
Describes communication interfaces: UART, USB, DDC, and SPI.
I/O Pins
Explains the functionality of various input/output pins like RESET_N and EXTINT.
Electromagnetic Interference on I/O Lines
Discusses EMI issues on I/O lines and mitigation methods.
Design
Pin Description
Details the function, pin number, I/O type, and remarks for each module pin.
Minimal Design
Presents a basic setup for a GNSS receiver using a passive antenna and UART.
Footprint and Paste Mask
Provides recommendations for the module's footprint and paste mask geometry.
Antenna Design
Covers passive and active antenna designs, LNA integration, and supervisor circuits.
Layout Design-in: Thermal Management
Provides guidance on thermal management for module placement to ensure stable tracking.
Migration to u-blox M8 Modules
Migrating u-blox 6 Designs to u-blox M8 Module
Discusses backward compatibility and considerations for migrating from u-blox 6.
Hardware Migration LEA-6N -> LEA-M8S
Compares pin assignments and provides remarks for migrating from LEA-6N to LEA-M8S.
Hardware Migration LEA-6T -> LEA-M8T
Compares pin assignments and provides remarks for migrating from LEA-6T to LEA-M8T.
Software Migration
References guides for overall module software operation and migration.
Product Handling
Packaging, Shipping, Storage and Moisture Preconditioning
Covers guidelines for module packaging, shipping, storage, and preconditioning.
Soldering
Provides detailed recommendations for soldering processes, including paste, reflow, and rework.
EOS/ESD/EMI Precautions
Addresses electrical overstress, ESD, and EMI precautions for robust system design.
Applications with Cellular Modules
Discusses integration with cellular modules, isolation, and interference immunity.
Appendix
Glossary
Provides definitions for abbreviations and terms used throughout the document.
Recommended Parts
Lists recommended diodes, SAW filters, LNAs, inductors, capacitors, resistors, and antennas.
Related Documents
Lists references to related datasheets, application notes, and guides.
Revision History
Details the document revisions, dates, authors, and changes made in each version.
Contact
Provides contact information for u-blox offices worldwide for sales and support.

Table of Contents