Telit Wireless Solutions NE310L2 Guide

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

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

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 3 of 64 2021-06-22
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 .................................. 9
Target Market .......................................................................... 9
Main features ........................................................................... 9
TX Output Power .................................................................... 10
NE310L2-W1 .......................................................................... 10
RX Sensitivity.......................................................................... 10
NE310L2-W1 .......................................................................... 10
Mechanical Specifications ..................................................... 11
Dimensions ............................................................................ 11
Weight .................................................................................... 11
Temperature Range ............................................................... 11
PINS ALLOCATION ............................................................... 13
Pin-out ................................................................................... 13
LGA Pads Layout .................................................................... 18
POWER SUPPLY ................................................................... 19
Power Supply Requirements ................................................. 19
Power Consumption .............................................................. 20

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 4 of 64 2021-06-22
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. Battery Source Power Supply Design Guidelines ................. 24
Thermal Design Guidelines ................................................... 25
Power Supply PCB layout Guidelines .................................... 25
RTC Supply ............................................................................. 26
PWRMON Power-on monitor................................................. 26
DIGITAL SECTION................................................................. 28
Logic Levels ........................................................................... 28
Power On ................................................................................ 29
Power Off ............................................................................... 29
Unconditional shutdown ........................................................ 29
Wake up from deep sleep mode ............................................ 29
Fast shut down ....................................................................... 29
Communication ports ............................................................ 30
SPI .......................................................................................... 30
Serial Ports ............................................................................ 30
5.7.2.1. Asynchronous Serial Port (USIF0) ......................................... 31
5.7.2.2. Asynchronous Serial Port (USIF1) ......................................... 32
5.7.2.3. Auxiliary Serial Port ............................................................... 33
General purpose I/O .............................................................. 33
Using a GPIO as INPUT .......................................................... 34
Using a GPIO as OUTPUT ....................................................... 34
External SIM Holder .............................................................. 34
ADC Converter ....................................................................... 35

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 5 of 64 2021-06-22
Using ADC Converter ............................................................. 35
DAC Converter ....................................................................... 35
Enabling DAC ......................................................................... 36
RF SECTION ......................................................................... 37
Antenna requirements........................................................... 37
PCB Design guidelines .......................................................... 37
MECHANICAL DESIGN ......................................................... 39
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 ........................................................................................ 46
NE310L2-W1 .......................................................................... 46
Reel ........................................................................................ 48
NE310L2-W1 .......................................................................... 48
CONFORMITY ASSESSMENT ISSUES ................................... 49
Approvals summary ............................................................... 49
RED approval ......................................................................... 49
RED Declaration of Conformity ............................................. 49
RED Antennas ........................................................................ 49
FCC and ISED approval / FCC et ISDE approbation .............. 50

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 6 of 64 2021-06-22
FCC certificates ..................................................................... 50
ISED Certificate / ISDE certificates ....................................... 50
Applicable FCC and ISED rules / Liste des règles FCC et
ISDE applicables .................................................................... 50
FCC and ISED Regulatory notices / Avis réglementaires de
FCC et ISDE ............................................................................ 51
FCC/ISED Antennas / FCC/ISDE Antennes ........................... 52
FCC label and compliance information ................................. 54
ISED label and compliance information/ Étiquette et
informations de conformité ISDE .......................................... 54
Information on test modes and additional testing
requirements / Informations sur les modes de test et les
exigences de test supplémentaires ...................................... 55
FCC Additional testing, Part 15 Subpart B disclaimer .......... 56
PRODUCT AND SAFETY INFORMATION ............................... 57
Copyrights and Other Notices ............................................... 57
Copyrights .............................................................................. 57
Computer Software Copyrights ............................................. 57
Usage and Disclosure Restrictions ....................................... 58
License Agreements .............................................................. 58
Copyrighted Materials ........................................................... 58
High Risk Materials ............................................................... 58
Trademarks ........................................................................... 59
3rd Party Rights ..................................................................... 59
Waiver of Liability .................................................................. 59
Safety Recommendations ...................................................... 60
GLOSSARY............................................................................ 61
DOCUMENT HISTORY ........................................................... 63

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 7 of 64 2021-06-22
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.
This document cannot include every hardware solution or every product that can be
designed. Where the suggested hardware configurations are not to be considered
mandatory, the information provided should be used as a guide and starting point for the
proper development of the product with the Telit module.
Audience
This document is intended for Telit customers, in particular system integrators, who are
going to implement their applications using our NE310L2 modules.
Contact Information, Support
For general contact, technical support services, technical questions and report of
documentation errors contact Telit Technical Support at:

TS-EM[email protected]

TS-AM[email protected]

[email protected]
Alternatively, use:
http://www.telit.com/support
For detailed information about where you can buy the Telit modules or for
recommendations on accessories and components visit:
http://www.telit.com
Our aim is to make this guide as helpful as possible. Keep us informed with your
comments and suggestions for improvements.
Telit appreciates the user feedback on our information.

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 8 of 64 2021-06-22
Symbol Conventions
Danger: This information MUST be followed or catastrophic
equipment failure or personal injury may occur.
Warning: Alerts the user on important steps about the module
integration.
Note/Tip: Provides advice and suggestions that may be useful when
integrating the module.
Electro-static Discharge: Notifies the user to take proper
grounding precautions before handling the product.
Table 1: Symbol Conventions
All dates are in ISO 8601 format, that is YYYY-MM-DD.
Related documents
80668ST11067A NE310L2 AT Commands Reference Guide

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 9 of 64 2021-06-22
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.
Product Variants and Frequency Bands
Product 2G Band (MHz) LTE CATM1 NBIoT CS Voice
VoLTE Region
NE310L2-W1 - -
B1, B2, B3, B4,
B5, B8, B12, B13,
B18, B19, B20,
B25, B26, B28,
B66, B85
N Worldwide
Table 2: Product Variants and their Frequency Bands
Refer to “RF Section” for details information about frequencies.
Note: Cellular technologies and frequency bands may vary based on
firmware version and firmware configuration used.
Target Market
NE310L2 can be used for Global IoT applications such as smart metering, healthcare
monitoring, home automation, industrial sensors, smart agriculture, asset tracking,
point of sale, portable devices and many others benefitting from low-power and low-data
rate capabilities.
Main features
Function Features
Modem

NBIoT technology

SMS support (text and PDU)

Real Time Clock

NE310L2 Hardware Design Guide
1VV0301711 Rev. 2 Page 10 of 64 2021-06-22
Interfaces

USIF0 Main UART (AT command* and Log)

AUX UART (AT Command*, FW Uograde, LOg)

SPI**

6 GPIOs

Antenna port
Table 3: Functional Features
* Functionality depending on ports configuration
** Functionality not available on MKT samples
TX Output Power
NE310L2-W1
Band Mode Class RF power (dBm)
Nominal*
B1, B2, B3, B4, B5, B8, B12, B13, B18,
B19, B20, B25, B26, B28, B66, B85 (LTE) CAT-NB1 3 23
Table 4: Transmission Output Power
* Max output power tolerance range according to 3GPP TS 36.521-1 and 3GPP TS 51.010-1 or better
RX Sensitivity
NE310L2-W1
Band REFsens (dBm)
Typical
REFsens (dBm)*
3GPP Limit
CAT NB2 / Band1 -114.6 -108.2
CAT NB2 / Band2 -114.3 -108.2
CAT NB2 / Band3 -114.9 -108.2
CAT NB2 / Band4 -114.5 -108.2
CAT NB2 / Band5 -114.6 -108.2
CAT NB2 / Band8 -114.8 -108.2
CAT NB2 / Band12 -114.4 -108.2
CAT NB2 / Band13 -114.8 -108.2
CAT NB2 / Band18 -114.7 -108.2
CAT NB2 / Band19 -114.8 -108.2
CAT NB2 / Band20 -114.2 -108.2