Telit Wireless Solutions NE310L2 Guide

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

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APPLICABILITY TABLE
PRODUCTS
NE310L2-W1

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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

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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

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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

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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

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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.

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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

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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

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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

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Band REFsens (dBm)
Typical
REFsens (dBm)*
3GPP Limit
CAT NB2 / Band25 -114.2 -108.2
CAT NB2 / Band26 -114.6 -108.2
CAT NB2 / Band28 -114.5 -108.2
CAT NB2 / Band66 -114.4 -108.2
CAT NB2 / Band85 -114.3 -108.2
Table 5: RX Sensitivity NE310L2-W1 * 3GPP TS 36.521-1 Release 15 Minimum performance requirement
Mechanical Specifications
Dimensions
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
Normal Operating Temperature Range –30°C to +70°C
The module is fully functional and
compliant according to regulatory
standards.
Extended Operating Temperature
Range -40°C to +85°C The module is fully functional (*)
Storage Temperature Range –40°C to +105°C The module is not powered and not
connected to power supply
Table 6: Temperature Range

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Note: (*) Functional: if applicable, the module is able to make and
receive data calls, send and receive SMS and data traffic.

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PINS ALLOCATION
Pin-out
Pin Signal I/O Function Type Comment
Asynchronous Serial Port (USIF0) – Prog. / Data + HW Flow Control
Y16 C103/TXD0 I Serial data input
(TXD) from DTE CMOS 1.8V Internal PU (TBD)
AA15 C104/RXD0 O Serial data output
(RXD) to DTE CMOS 1.8V
Y18 C105/RTS0 I
Input for Request
to send signal
(RTS) from DTE
CMOS 1.8V Internal PU
(TBD)
AA17 C106/CTS0 O
Output for Clear to
send signal (CTS)
to DTE
CMOS 1.8V
Auxiliary Serial Port
Y10 TX_AUX O Auxiliary UART (TX
Data to DTE) CMOS 1.8V
AA9 RX_AUX I Auxiliary UART (RX
Data to DTE) CMOS 1.8V Internal PU (TBD)
SIM card interface
L1 SIM_CLK O External SIM
signal – Clock CMOS 1.8V
M2 SIM_RST O External SIM
signal – Reset CMOS 1.8V
N1 SIM_DAT I/O External SIM
signal – Data I/O CMOS 1.8V
P2 SIM_VCC - Power supply for
the SIM 1.8V Only 1.8V simcard are supported
- SIMIN I Presence SIM
input CMOS 1.8V See par.5.8
SPI
AA5 SPI_MOSI I/O SPI MOSI CMOS 1.8V
Y8 SPI_MISO I/O SPI MISO CMOS 1.8V
AA7 SPI_CLK I/O SPI Clock CMOS 1.8V
Y6 SPI_CS I/O SPI Chip Select CMOS 1.8V
DIGITAL IO

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Pin Signal I/O Function Type Comment
V11 IO1 I/O
Configurable
GPIO01/
CMOS 1.8V
Internal PU
V13 IO2 I/O
Configurable
GPIO02/ CMOS 1.8V
Internal PU
D7 IO3 I/O Configurable
GPIO03 CMOS 1.8V
Internal PD
(TBD)
D9 IO4 I/O Configurable
GPIO04 CMOS 1.8V
Internal PU
(TBD)
D11 IO5 I/O Configurable
GPIO05 CMOS 1.8V
Internal PU
(TBD)
D13 IO6 I/O Configurable
GPIO06 CMOS 1.8V
Internal PD
(TBD)
ADC and DAC
B18 ADC I Analog To Digital
converter Input A/D
R16 DAC O Digital To Analog
converter Output D/A PWM signal
RF Section
A5 CELL_MAIN ANTENNA I/O Main Antenna (50
ohm) RF
Miscellaneous Functions
B2 S_LED O Status LED CMOS 1.8V
N16 ON_OFF*/WAKE* I
Input Command
for Power ON/OFF
and to wake from
deep sleep mode
Internal
Power
Supply
(MAX 1.6V
low power
mode)
Active Low,
Internal PU (620K)
R19 HW_SHUTDOWN* I HW Unconditional
Shutdown
Internal
Power
Supply
(MAX 1.6V
low power
mode)
Active Low,
Internal PU (620K)
1 PWRMON O Power ON Monitor CMOS 1.8V
Power Supply

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Pin Signal I/O Function Type Comment
W1 VBATT_PA - Main power supply
(Radio PA) Power
AA3 VBATT - Main power supply
(Baseband) Power
N4 CTANK -
Internal supply
domain pin for
external tank
capacitor
1.8V
A3 GND - RF Ground Power
A7 GND - RF Ground Power
A9 GND - RF Ground Power
A13 GND - RF Ground Power
A17 GND - RF Ground Power
B4 GND - RF Ground Power
B6 GND - RF Ground Power
B10 GND - RF Ground Power
B12 GND - RF Ground Power
B14 GND - RF Ground Power
B16 GND - RF Ground Power
C19 GND - RF Ground Power
D18 GND - RF Ground Power
F8 GND - Thermal Ground Power
F12 GND - Thermal Ground Power
F18 GND - Thermal Ground Power
G19 GND - Thermal Ground Power
H6 GND - Thermal Ground Power
H14 GND - Thermal Ground Power
J19 GND - Thermal Ground Power
K18 GND - Thermal Ground Power
M18 GND - Thermal Ground Power
N19 GND - Thermal Ground Power
P6 GND - Thermal Ground Power
P14 GND - Thermal Ground Power
T8 GND - Thermal Ground Power

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Pin Signal I/O Function Type Comment
T12 GND - Thermal Ground Power
U1 GND - Power Ground Power
V2 GND - Power Ground Power
W19 GND - Power Ground Power
Y2 GND - Power Ground Power
Y4 GND - Power Ground Power
RESERVED
G1 RESERVED - RESERVED
H2 RESERVED - RESERVED
J1 RESERVED - RESERVED
K2 RESERVED - RESERVED
J4 RESERVED - RESERVED
G4 RESERVED - RESERVED
L19 RESERVED - RESERVED
A11 RESERVED - RESERVED
R4 RESERVED - RESERVED
L4 RESERVED - RESERVED
V7 RESERVED - RESERVED
V9 RESERVED - RESERVED
L16 RESERVED - RESERVED
P18 RESERVED - RESERVED
J16 RESERVED - RESERVED
B8 RESERVED - RESERVED
A15 RESERVED - RESERVED
U19 RESERVED - RESERVED
V18 RESERVED - RESERVED
T18 RESERVED - RESERVED
Y12 RESERVED - RESERVED
AA11 RESERVED - RESERVED
AA13 RESERVED - RESERVED
Y14 RESERVED - RESERVED

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Pin Signal I/O Function Type Comment
E19 RESERVED - RESERVED
H18 RESERVED - RESERVED
G16 RESERVED - RESERVED
T2 RESERVED - RESERVED
C1 RESERVED - RESERVED
D2 RESERVED - RESERVED
E1 RESERVED - RESERVED
F2 RESERVED - RESERVED
Table 7: Pin-out Information
Warning: Reserved pins must not be connected.
Warning: C104/RXD1 cannot have any PU or HIGH state during
BOOTING UP phase.

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LGA Pads Layout
TOP VIEW
Figure 1: LGA Pads Layout
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
A GND CELL
MAIN GND GND RES GND RES GND A
B S_LED GND GND RES GND GND GND GND ADC B
C RES GND C
D RES IO3 IO4 IO5 IO6 GND D
E RES RES E
F RES GND GND GND F
G RES RES RES GND G
H RES GND GND RES H
J RES RES RES GND J
K RES GND K
LSIM_C
LK RES RES RES L
MSIM_R
ST GND M
NSIM_D
AT CTANK
ON_OFF*
/WAKE*
GND N
PSIM_V
CC GND GND RES P
RPWRM
ON RES DAC
HW_SHU
TDOWN*
R
T RES GND GND RES T
U GND RES U
V GND RES RES IO1 IO2 RES V
WVBATT
_PA GND W
Y GND GND SPI_C
S
SPI_MI
SO
TX_AU
XRES RES C103/T XD0
C105/R
TS0 Y
AA VBATT SPI_M
OSI
SPI_C
LK
RX_AU
XRES RES C104/R XD0
C106/C
TS0 AA
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
SUPPLY AND CONTROL
SIM CARD
ANALOG FUNCTIONALITY
GROUND
DIGITAL FUNCTIONALITY
DIGITAL COMMUNICATION
RF SIGNALS
RESERVED/NOT ASSIGNED/ RESERVED FOR FUTURE USE
GNSS

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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.
Power Supply Requirements
The external power supply must be connected to VBATT & VBATT_PA signals and must
fulfil the following requirements:
Power Supply Value
Nominal Supply Voltage 3.8V
Operating Voltage Range 3.2 V - 4.2 V
Extended Voltange Range 3.0 V - 4.5 V
VBATTmin 2.2V
Table 8: Power Supply Requirements
Warning: The supply voltage of the modem must never exceed the
Extended Operating Voltage Range.
Wrong implementation of power supply guidelines described in this
document may result in module fault.
Note: For PTCRB approval on the final products the power supply is
required to be within the “Normal Operating Voltage Range”.

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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.
Note: When turning on the modem, the voltage must be at least
VBATTmin.
Note: HW User Guide specifications shall be fully acknowledged and
correctly implemented in order to use the module in its “Extended
Operating Voltage Range”.
Power Consumption
Idle mode
Mode Mode
Description
IDLE mode NBIoT
(mA)
2G
(mA)
AT+CFUN=1 TBD - Normal mode: full functionality of the module
AT+CFUN=4 Disabled TX and RX; module is not registered on
the network
AT+CFUN=5
TBD - Paging cycle #256 frames (2.56s DRx cycle)
TBD - 81.92s eDRx cycle length (PTW=2.56s, DRX=1.28s)
TBD - 327.68s eDRx cycle length (PTW=2.56s,
DRX=1.28s)
TBD - 655.36s eDRx cycle length (PTW=2.56s,
DRX=1.28s)
TBD - 1310.72s eDRx cycle length (PTW=2.56s,
DRX=1.28s)
TBD - 2621.44s eDRx cycle length (PTW=2.56s,
DRX=1.28s)
- - Paging Multiframe 9
PSM mode
AT+CPSMS=1 No current source or sink by any connected pin