Telit Wireless Solutions NE310L2 Hw Design Manual
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Telit Wireless Solutions NE310L2 Hw Design Manual

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NE310L2
HW Design Guide
1VV0301711 Rev. 2 Preliminary – 2021-06-22
Telit Technical Documentation

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Summary of Contents for Telit Wireless Solutions NE310L2

  • Page 1 NE310L2 HW Design Guide 1VV0301711 Rev. 2 Preliminary – 2021-06-22 Telit Technical Documentation...

  • Page 2: Applicability Table

    NE310L2 Hardware Design Guide APPLICABILITY TABLE PRODUCTS NE310L2-W1 1VV0301711 Rev. 2 Page 2 of 64 2021-06-22...

  • Page 3: Table Of Contents

    NE310L2 Hardware Design Guide CONTENTS APPLICABILITY TABLE ................2 CONTENTS ..................... 3 INTRODUCTION ..............7 Scope ..................7 Audience .................. 7 Contact Information, Support ..........7 Symbol Conventions ..............8 Related documents ..............8 GENERAL PRODUCT DESCRIPTION ........9 Overview ................... 9 Product Variants and Frequency Bands ........
  • Page 4 NE310L2 Hardware Design Guide Idle mode ................20 NE310L2-W1 Connected Mode ..........21 General Design Rules ............22 Electrical Design Guidelines ..........22 4.3.1.1. +5V Source Power Supply Design Guidelines ....... 22 4.3.1.2. +12V Source Power Supply Design Guidelines ..... 23 4.3.1.3.
  • Page 5 Drawing .................. 39 NE310L2-W1 ................39 APPLICATION PCB DESIGN ..........40 Footprint ................40 NE310L2-W1 ................40 Recommendations for NE310L2-W1 ........42 PCB pad design ..............43 Stencil ..................44 Solder paste ................44 Solder Reflow ................. 44 PACKAGING ................. 46 Tray ..................
  • Page 6 NE310L2 Hardware Design Guide FCC certificates ..............50 ISDE certificates ISED Certificate / ........50 Liste des règles FCC et Applicable FCC and ISED rules / ISDE applicables ..............50 FCC and ISED Regulatory notices / Avis réglementaires de FCC et ISDE ................51...

  • Page 7: Introduction

    INTRODUCTION Scope This document introduces the NE310L2 module and presents possible and recommended hardware solutions for the development of a product based on this module. All the features and the solutions described in this document are applicable to all the variants listed in the applicability table.

  • Page 8: Symbol Conventions

    Electro-static Discharge: Notifies the user to take proper grounding precautions before handling the product. Table Symbol Conventions All dates are in ISO 8601 format, that is YYYY-MM-DD. Related documents 80668ST11067A NE310L2 AT Commands Reference Guide 1VV0301711 Rev. 2 Page 8 of 64 2021-06-22...

  • Page 9: General Product Description

    NE310L2 Hardware Design Guide GENERAL PRODUCT DESCRIPTION Overview The NE310L2 module is a NBIoT communication product that allows integrators to plan availability for even the longest lifecycle applications, highly recommended for new designs specified for worldwide coverage. The NE310L2 operates with 1.8 V GPIOs, minimizing power consumption and making it even more ideal for application with battery-powered and wearable devices.

  • Page 10: Tx Output Power

    NE310L2 Hardware Design Guide  USIF0 Main UART (AT command* and Log)  AUX UART (AT Command*, FW Uograde, LOg) Interfaces  SPI**  6 GPIOs  Antenna port Table 3: Functional Features * Functionality depending on ports configuration ** Functionality not available on MKT samples...

  • Page 11: Mechanical Specifications

    The overall dimensions of NE310L2-W1 are:  Length: 14.3 mm  Width: 13.1 mm  Thickness: 2.6 mm Weight The nominal weight of the NE310L2-W1 is 1gr. Temperature Range Temperature range Note The module is fully functional and Normal Operating Temperature Range –30°C to +70°C...
  • Page 12 NE310L2 Hardware Design Guide Note: (*) Functional: if applicable, the module is able to make and receive data calls, send and receive SMS and data traffic. 1VV0301711 Rev. 2 Page 12 of 64 2021-06-22...

  • Page 13: Pins Allocation

    NE310L2 Hardware Design Guide PINS ALLOCATION Pin-out Signal Function Type Comment Asynchronous Serial Port (USIF0) – Prog. / Data + HW Flow Control Serial data input Internal PU C103/TXD0 CMOS 1.8V (TXD) from DTE (TBD) Serial data output AA15 C104/RXD0 CMOS 1.8V...
  • Page 14 NE310L2 Hardware Design Guide Signal Function Type Comment Configurable Internal PU GPIO01/ CMOS 1.8V Configurable Internal PU GPIO02/ CMOS 1.8V Internal PD Configurable CMOS 1.8V GPIO03 (TBD) Internal PU Configurable CMOS 1.8V GPIO04 (TBD) Internal PU Configurable CMOS 1.8V GPIO05...
  • Page 15 NE310L2 Hardware Design Guide Signal Function Type Comment Main power supply VBATT_PA Power (Radio PA) Main power supply VBATT Power (Baseband) Internal supply domain CTANK 1.8V external tank capacitor RF Ground Power RF Ground Power RF Ground Power RF Ground...
  • Page 16 NE310L2 Hardware Design Guide Signal Function Type Comment Thermal Ground Power Power Ground Power Power Ground Power Power Ground Power Power Ground Power Power Ground Power RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED...
  • Page 17 NE310L2 Hardware Design Guide Signal Function Type Comment RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED Table Pin-out Information Warning: Reserved pins must not be connected. Warning: C104/RXD1 cannot have any PU or HIGH state during BOOTING UP phase.

  • Page 18: Lga Pads Layout

    NE310L2 Hardware Design Guide LGA Pads Layout TOP VIEW CELL MAIN S_LED SIM_C SIM_R SIM_D ON_OFF* CTANK /WAKE* SIM_V PWRM HW_SHU TDOWN* VBATT SPI_C SPI_MI TX_AU C103/T C105/R SPI_M SPI_C RX_AU C104/R C106/C VBATT Figure 1: LGA Pads Layout SUPPLY AND CONTROL...

  • Page 19: Power Supply

    NE310L2 Hardware Design Guide POWER SUPPLY The power supply circuitry and the board layout are a very important part in the full product design and they strongly reflect on the overall performance of the product so the requirements and the guidelines that will follow should be read carefully for a proper design.

  • Page 20: Power Consumption

    NE310L2 Hardware Design Guide Note: The application’s power supply section must be designed with care to avoid an excessive voltage drop during transmission peak current absorptions. If the voltage drops beyond the limits of the Extended Operating Voltage range, an unintentional module power off can occur.

  • Page 21: Ne310L2-W1 Connected Mode

    NE310L2 Hardware Design Guide Table Idle and PSM mode Note: The reported LTE CAT NB1 idle mode values are an average among all the product variants and bands for each network wireless technology. The support for a specific network wireless technology depends on the product variant configuration.

  • Page 22: General Design Rules

    NE310L2 Hardware Design Guide General Design Rules The main guidelines for the Power Supply Design include three different design steps:  the electrical design  the thermal design  the PCB layout Electrical Design Guidelines The electrical design of the power supply strongly depends on the power source where this power is drained.

  • Page 23: 4.3.1.2. +12V Source Power Supply Design Guidelines

    NE310L2 Hardware Design Guide An example of linear regulator with 5V input is: Figure example of linear regulator with 5V input 4.3.1.2. +12V Source Power Supply Design Guidelines  The desired output for the power supply is 3.8V, so due to the big difference between the input source and the desired output, a linear regulator is not suited and shall not be used.

  • Page 24: 4.3.1.3. Battery Source Power Supply Design Guidelines

    The battery must be rated to supply current peaks up to TBD A. Note: DO NOT USE any type of Ni-Cd, Ni-MH, and Pb battery directly connected to NE310L2. Their use can lead to overvoltage on the NE310L2 and damage it. USE ONLY Li-Ion battery types.

  • Page 25: Thermal Design Guidelines

     The Bypass low ESR capacitor must be placed close to the Telit NE310L2 power input pads or, if the power supply is a switching type, it can be placed close to the inductor to cut the ripple, provided the PCB trace from the capacitor to the NE310L2 is wide enough to ensure a dropless connection even during an TBD current peak.

  • Page 26: Rtc Supply

    The below figure shows the recommended circuit: Figure 4: recommended circuit RTC Supply RTC is functional when NE310L2 is in PSM or OFF state and VBATT pin is supplied. RTC settings are lost when VBATT supply is removed. PWRMON Power-on monitor PWRMON is always active (output high) when the module is powered ON (module powered ON indication) and cannot be set to LOW level by any AT command.
  • Page 27 NE310L2 Hardware Design Guide Output current Table 11: Operating range characteristics of PWRMON signal Note: PWRMON during PSM period is LOW ( PSM has to be previously enabled by AT+CPSMS command) Note: The Output Current MUST never be exceeded; care must be taken when designing the application section to avoid an excessive current consumption.

  • Page 28: Digital Section

     OFF state: Vbatt is applied and only RTC is running. The Baseband is switched OFF and the only possible change is the ON state.  ON state: the baseband is fully switched on and NE310L2 is ready to accept AT commands. NE310L2 can be idle or connected.

  • Page 29: Power On

    NE310L2 Hardware Design Guide Power On Available in a next document revision. Power Off Available in a next document revision. Unconditional shutdown Available in a next document revision. Wake up from deep sleep mode Available in a next document revision.

  • Page 30: Communication Ports

    NE310L2 Hardware Design Guide Communication ports The NE310L2 Module is provided by a standard 3-wire SPI master or slave interface with chip select control. The following table is listing the available signals: Signal Function Type NOTE SPI_MOSI SPI MOSI CMOS 1.8V...

  • Page 31: Asynchronous Serial Port (Usif0)

    NE310L2 Hardware Design Guide 5.7.2.1. Asynchronous Serial Port (USIF0) The serial port 0 on the NE310L2 is a +1.8V UART with 5 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is reversed) and levels. The following table is listing the available signals:...

  • Page 32: Asynchronous Serial Port (Usif1)

    (RESET included). 5.7.2.2. Asynchronous Serial Port (USIF1) The serial port 1 on the NE310L2 is a +1.8V UART with 5 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is reversed) and levels. Warning: C104/RXD1 cannot have any PU or HIGH state during BOOTING UP phase.

  • Page 33: 5.7.2.3. Auxiliary Serial Port

    Pull-up default during ON state Table 16: NE310L2 port signals 5.7.2.3. Auxiliary Serial Port The auxiliary serial port on the NE310L2 is a CMOS 1.8V with only the RX and TX signals. The signals of the NE310L2 serial port are: Signal...

  • Page 34: Using A Gpio As Input

    Note: In order to avoid a back powering, it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the NE310L2 when the module is powered off or during an ON/OFF transition. Using a GPIO as OUTPUT The GPIO pads, when used as outputs, can drive 1.8V CMOS digital devices or compatible...

  • Page 35: Adc Converter

    ADC Converter The NE310L2 is provided by one AD converter. It is able to read a voltage level in the range of 0÷1.8 volts applied on the ADC pin input, store and convert it into 10 bit word.

  • Page 36: Enabling Dac

    NE310L2 Hardware Design Guide Enabling DAC Available in a next document revision. 1VV0301711 Rev. 2 Page 36 of 64 2021-06-22...

  • Page 37: Rf Section

    The antenna and antenna transmission line on PCB for a Telit NE310L2 device shall fulfil the following requirements:...
  • Page 38 EM noisy devices (such as fast switching ICs, LCD and so on) are present on the PCB hosting the NE310L2, take care of the shielding of the antenna line by burying it in an inner layer of PCB and surrounding it with the Ground planes, or shield it with a metal frame cover;...

  • Page 39: Mechanical Design

    NE310L2 Hardware Design Guide MECHANICAL DESIGN Drawing NE310L2-W1 Figure Mechanical Drawing NE310L2-W1 Note: Dimensions in mm. General Tolerance ±0.1, Angular Tolerance ±1°, The tolerance is not cumulative. 1VV0301711 Rev. 2 Page 39 of 64 2021-06-22...

  • Page 40: Application Pcb Design

    NE310L2 Hardware Design Guide APPLICATION PCB DESIGN The NE310L2 modules have been designed in order to be compliant with a standard lead- free SMT process. Footprint NE310L2-W1 COPPER PATTERN (top view) Figure 7: Copper Pattern (top view) 1VV0301711 Rev. 2...
  • Page 41 NE310L2 Hardware Design Guide SOLDER RESIST PATTERN (top view) Figure 8: Solder resist pattern (top view) 1VV0301711 Rev. 2 Page 41 of 64 2021-06-22...

  • Page 42: Recommendations For Ne310L2-W1

    NE310L2 Hardware Design Guide Recommendations for NE310L2-W1 In order to easily rework the NE310L2-W1, it is recommended to consider on the application a 2 mm placement inhibit area around the module. It is also suggested, as a common rule for an SMT component, to avoid having a mechanical part of the application in direct contact with the module.

  • Page 43: Pcb Pad Design

    NE310L2 Hardware Design Guide PCB pad design Non solder mask defined (NSMD) type is recommended for the solder pads on the PCB. Copper Solder Mask NSMD (Soler Mask Defined) (Non Solder Mask Defined) Figure 10: PCB solder pad recommendations The recommendation for the PCB pads dimensions are 1:1 with module pads.

  • Page 44: Stencil

    NE310L2 Hardware Design Guide Stencil The layout of the stencil apertures can be the same as the recommended footprint (1:1), we suggest a thickness of stencil foil ≥ 120 µm. Solder paste Item Lead Free Solder Paste Sn/Ag/Cu Table 23: Solder paste We recommend using only “no clean”...
  • Page 45 Table 24 Profile feature recommendations Note: All temperatures refer to topside of the package, measured on the package body surface Warning: THE NE310L2 MODULES WITHSTANDS ONE REFLOW PROCESS ONLY. Warning: The aforementioned solder reflow profile represents the typical SAC reflow limits and does not guarantee the adequate adherence of the module to the customer application throughout the temperature range.

  • Page 46: Packaging

    NE310L2 Hardware Design Guide PACKAGING Tray NE310L2-W1 Figure 12: NE310L2-W1 tray packaging 1VV0301711 Rev. 2 Page 46 of 64 2021-06-22...
  • Page 47 NE310L2 Hardware Design Guide Figure 13: NE310L2-W1 tray 1VV0301711 Rev. 2 Page 47 of 64 2021-06-22...

  • Page 48: Reel

    NE310L2 Hardware Design Guide Reel NE310L2-W1 1VV0301711 Rev. 2 Page 48 of 64 2021-06-22...

  • Page 49: Conformity Assessment Issues

    Table 25: Type approvals summary RED approval RED Declaration of Conformity Hereby, Telit Communications S.p.A declares that the NE310L2-W1 Module is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet http://www.telit.com/red...

  • Page 50: Fcc And Ised Approval / Fcc Et Isde Approbation

    NE310L2 Hardware Design Guide GPRS/EGPRS 900 GPRS/EGPRS 1800 FDD 1 11.8 FDD 3 11.3 FDD 8 FDD 20 FDD 28 Table 27: Max Gain for RED FCC et ISDE approbation FCC and ISED approval / FCC certificates The FCC Certificate is available here https://www.fcc.gov/oet/ea/fccid...

  • Page 51: Fcc And Ised Regulatory Notices / Avis Réglementaires De Fcc Et Isde

    NE310L2 Hardware Design Guide FCC and ISED Regulatory notices / Avis réglementaires de FCC et ISDE Déclaration de modification Modification statement / Telit does not approve any changes or modifications to this device by the user. Any changes or modifications could void the user’s authority to operate the equipment.

  • Page 52: Fcc/Ised Antennas / Fcc/Isde Antennes

    NE310L2 Hardware Design Guide equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
  • Page 53 NE310L2 Hardware Design Guide Max Gain for FCC (dBi) GPRS/EGPRS 1900 FDD 2 FDD 4 FDD 5 FDD 12 FDD 13 FDD 25 FDD 26 FDD 66 FDD 85 Table 30: Max Gain for FCC (dBi) ISDE ISED / This radio transmitter has been approved by ISED to operate with the antenna types listed below with the maximum allowable gain indicated.

  • Page 54: Fcc Label And Compliance Information

    The external label will read as follows: “Contains Transmitter Module FCC ID: RI7NE310L2W1” or “Contains FCC ID: RI7NE310L2W1” for NE310L2-W1 and : “Contains Transmitter Module FCC ID: RI7NE310L2WW” or “Contains FCC ID: RI7NE310L2WW” for...

  • Page 55: Information On Test Modes And Additional Testing Requirements / Informations Sur Les Modes De Test Et Les Exigences De Test Supplémentaires

    NE310L2 Hardware Design Guide certification number for the module, preceded by the word "contains" or similar wording expressing the same meaning, as follows: Contains IC: XXXXXX-YYYYYYYYYYY In this case, XXXXXX-YYYYYYYYYYY is the module's certification number. Le produit hôte devra être correctement étiqueté, de façon à permettre l'identification des modules qui s'y trouvent.

  • Page 56: Fcc Additional Testing, Part 15 Subpart B Disclaimer

    NE310L2 Hardware Design Guide Si ce module est destiné à être utilisé dans un appareil portable, vous êtes responsable de l'approbation séparée pour satisfaire aux exigences SAR de la FCC Partie 2.1093 et IC RSS-102. FCC Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC...

  • Page 57: Product And Safety Information

    NE310L2 Hardware Design Guide PRODUCT AND SAFETY INFORMATION Copyrights and Other Notices SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE Although reasonable efforts have been made to ensure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from the use of the information contained herein.

  • Page 58: Usage And Disclosure Restrictions

    NE310L2 Hardware Design Guide including – but not limited to - the exclusive right to copy or reproduce in any form the copyrighted products. Accordingly, any copyrighted computer programs contained in Telit’s products described in this instruction manual shall not be copied (reverse engineered) or reproduced in any manner without the express written permission of the copyright owner, being Telit or the 3rd Party software supplier.

  • Page 59: Trademarks

    NE310L2 Hardware Design Guide Trademarks TELIT and the Stylized T-Logo are registered in the Trademark Office. All other product or service names are property of their respective owners. 3rd Party Rights The software may include 3rd Party’s software Rights. In this case the user agrees to comply with all terms and conditions imposed in respect of such separate software rights.

  • Page 60: Safety Recommendations

    NE310L2 Hardware Design Guide Safety Recommendations Make sure the use of this product is allowed in your country and in the environment required. The use of this product may be dangerous and has to be avoided in areas where:  it can interfere with other electronic devices, particularly in environments such as hospitals, airports, aircrafts, etc.

  • Page 61: Glossary

    NE310L2 Hardware Design Guide GLOSSARY Analog – Digital Converter BPSK Modulation used for in OFDM symbols Clock CMOS Complementary Metal – Oxide Semiconductor Chip Select Digital – Analog Converter Data Terminal Equipment Digital Voice Interface Electromagnetic Electromagnetic Compatibility Electromagnetic Interference...
  • Page 62 NE310L2 Hardware Design Guide Resource Block; the smallest unit of resources that can be allocated to a user Radio Frequency Reference Measurement Channel; it refers to a 3GPP standardized setting for the channel. For more details, refer to 3GPP TS 36.521-1 Real Time Clock Resource Unit (NB IoT Only);...

  • Page 63: Document History

    NE310L2 Hardware Design Guide DOCUMENT HISTORY Revision Date Changes 2021-03-31 First issue 2021-06-10 Par 10 Conformoty Assessment Issues updated 2021-06-22 Par 4 Power Supply updated 1VV0301711 Rev. 2 Page 63 of 64 2021-06-22...

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