Telit Wireless Solutions NL865B1 User manual

[01.2017]
Mod.08
18 2017-01 Rev.0
NL865B1
HW Design Guide
1VV0301450 Rev. 1 – 2017-11-20

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTICE
While reasonable efforts have been made to assure the accuracy of this document, Telit
assumes no liability resulting from any inaccuracies or omissions in this document, or from
use of the information obtained herein. The information in this document has been carefully
checked and is believed to be reliable. However, no responsibility is assumed for
inaccuracies or omissions. Telit reserves the right to make changes to any products
described herein and reserves the right to revise this document and to make changes from
time to time in content hereof with no obligation to notify any person of revisions or changes.
Telit does not assume any liability arising out of the application or use of any product,
software, or circuit described herein; neither does it convey license under its patent rights
or the rights of others.
It is possible that this publication may contain references to, or information about Telit
products (machines and programs), programming, or services that are not announced in
your country. Such references or information must not be construed to mean that Telit
intends to announce such Telit products, programming, or services in your country.
COPYRIGHTS
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
Telit and its licensors certain exclusive rights for copyrighted material, including the
exclusive right to copy, reproduce in any form, distribute and make derivative works of the
copyrighted material. Accordingly, any copyrighted material of Telit and its licensors
contained herein or in the Telit products described in this instruction manual may not be
copied, reproduced, distributed, merged or modified in any manner without the express
written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed
to grant either directly or by implication, estoppel, or otherwise, any license under the
copyrights, patents or patent applications of Telit, as arises by operation of law in the sale
of a product.
COMPUTER SOFTWARE COPYRIGHTS
The Telit and 3rd Party supplied Software (SW) products described in this instruction
manual may include copyrighted Telit and other 3rd Party supplied computer programs
stored in semiconductor memories or other media. Laws in the Italy and other countries
preserve for Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted
computer programs, including the exclusive right to copy or reproduce in any form the
copyrighted computer program. Accordingly, any copyrighted Telit or other 3rd Party
supplied SW computer programs contained in the Telit products described in this instruction
manual may not be copied (reverse engineered) or reproduced in any manner without the
express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase
of Telit products shall not be deemed to grant either directly or by implication, estoppel, or
otherwise, any license under the copyrights, patents or patent applications of Telit or other
3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that
arises by operation of law in the sale of a product.

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USAGE AND DISCLOSURE RESTRICTIONS
I. License Agreements
The software described in this document is the property of Telit and its licensors. It is
furnished by express license agreement only and may be used only in accordance with the
terms of such an agreement.
II. Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language or
computer language, in any form or by any means, without prior written permission of Telit
III. High Risk Materials
Components, units, or third-party products used in the product described herein are NOT
fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control
equipment in the following hazardous environments requiring fail-safe controls: the
operation of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air
Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its
supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High
Risk Activities.
IV. Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or
service names are the property of their respective owners.
V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with
all terms and conditions imposed on you in respect of such separate software. In addition
to Third Party Terms, the disclaimer of warranty and limitation of liability provisions in this
License shall apply to the Third Party Right software.
TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED
FROM ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY
MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM
WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE
USE OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE,
INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY
QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.
NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED
AND WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY,
ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE
OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS
LICENSE AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE
PRODUCTS
NL865B1-E1

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Contents
NOTICE 2
COPYRIGHTS................................................................................................ 2
COMPUTER SOFTWARE COPYRIGHTS...................................................... 2
USAGE AND DISCLOSURE RESTRICTIONS............................................... 3
APPLICABILITY TABLE................................................................................ 4
CONTENTS.................................................................................................... 5
1. INTRODUCTION.......................................................................... 8
Scope........................................................................................... 8
Audience....................................................................................... 8
Contact Information, Support........................................................ 8
Text Conventions.......................................................................... 9
Related Documents.................................................................... 10
2. GENERAL PRODUCT DESCRIPTION ...................................... 11
Overview..................................................................................... 11
Product Variants and Frequency Bands...................................... 12
Target market ............................................................................. 12
Main features.............................................................................. 13
TX Output Power........................................................................ 14
RX Sensitivity ............................................................................. 14
Mechanical specifications........................................................... 14
2.7.1. Dimensions................................................................................. 14
2.7.2. Weight ........................................................................................ 14
Temperature range..................................................................... 15
3. PINS ALLOCATION................................................................... 16
Pin-out........................................................................................ 16
LGA Pads Layout........................................................................ 21
4. POWER SUPPLY....................................................................... 22
Power Supply Requirements....................................................... 22
Power Consumption ................................................................... 23
General Design Rules................................................................. 24
4.3.1. Electrical Design Guidelines ....................................................... 24

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4.3.1.1. +5V Source Power Supply Design Guidelines ............................ 24
4.3.1.2. +12V Source Power Supply Design Guidelines .......................... 25
4.3.1.3. Battery Source Power Supply Design Guidelines........................ 26
4.3.2. Thermal Design Guidelines......................................................... 27
4.3.3. Power Supply PCB layout Guidelines ......................................... 28
VAUX/PWRMON Power Output.................................................. 29
3GPP Power Saving Mode (PSM) .............................................. 30
4.5.1. LP_WAKE design guide.............................................................. 31
5. DIGITAL SECTION .................................................................... 32
Logic Levels................................................................................ 32
Power On.................................................................................... 33
Unconditional Restart.................................................................. 35
Power OFF procedure ................................................................ 38
Communication ports.................................................................. 39
5.5.1. Serial Ports................................................................................. 39
5.5.1.1. MODEM SERIAL PORT 1 .......................................................... 39
5.5.1.2. MODEM SERIAL PORT 2 .......................................................... 41
5.5.1.3. RS232 LEVEL TRANSLATION................................................... 42
General purpose I/O ................................................................... 44
5.6.1. Using a GPIO as INPUT............................................................. 45
5.6.2. Using a GPIO as OUTPUT ......................................................... 46
I2C Port ...................................................................................... 46
SIM Interface.............................................................................. 46
5.8.1. SIMIN Detection.......................................................................... 46
ADC Converter ........................................................................... 47
6. RF SECTION.............................................................................. 48
Bands Variants ........................................................................... 48
TX Output power......................................................................... 48
RX Sensitivity ............................................................................. 48
RED requirements...................................................................... 48
Antenna requirements................................................................. 49
6.5.1. Main Antenna ............................................................................. 49
6.5.2. PCB design guidelines................................................................ 50
6.5.3. Antenna installation Guidelines................................................... 51
7. MECHANICAL DESIGN............................................................. 52
Mechanical Dimensions.............................................................. 52

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7.1.1. Mechanical Drawing ................................................................... 52
7.1.2. Top View..................................................................................... 52
7.1.3. Bottom View (as seen from bottom side)..................................... 53
7.1.4. Side View.................................................................................... 54
7.1.5. Module finishing & dimensions.................................................... 54
8. APPLICATION PCB DESIGN .................................................... 55
Recommended footprint for the application................................. 55
PCB pad design.......................................................................... 56
PCB pad dimensions .................................................................. 56
Stencil......................................................................................... 57
Solder paste ............................................................................... 57
NL865B1 Solder reflow............................................................... 58
9. PACKING SYSTEM ................................................................... 59
Tray............................................................................................ 59
Tray Drawing.............................................................................. 61
Tape & Reel................................................................................ 62
Carrier Tape Drawing.................................................................. 63
Moisture sensitivity ..................................................................... 63
10. CONFORMITY ASSESSMENT ISSUES .................................... 64
Declaration of Conformity ........................................................... 64
11. SAFETY RECOMMENDATIONS................................................ 65
READ CAREFULLY.................................................................... 65
12. REFERENCE TABLE OF RF BANDS CHARACTERISTICS..... 66
13. ACRONYMS............................................................................... 69
14. DOCUMENT HISTORY .............................................................. 71

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1. INTRODUCTION
Scope
This document introduces the Telit NL865B1 module and presents possible and
recommended hardware solutions for developing a product based on this module. All the
features and solutions detailed in this document are applicable to all NL865B1 variants,
where NL865B1 refers to the variants listed in the applicability table.
Obviously, this document cannot embrace every hardware solution or every product that
can be designed. Where the suggested hardware configurations need not be considered
mandatory, the information given should beused as a guide and astarting point for properly
developing your product with the Telit module.
Audience
This document is intended for Telit customers, especially system integrators, about to
implement their applications using the Telit module.
Contact Information, Support
For general contact, technical support services, technical questions and report
documentation errors contact Telit Technical Support at:
•[e-mail]
•[e-mail]
•TS-[email protected]
•TS-[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 of your comments
and suggestions for improvements.
Telit appreciates feedback from the users of our information.

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Text Conventions
Danger – This information MUST be
followed or catastrophic
equipment failure or bodily injury may occur.
Caution or Warning –
Alerts the user to important points about
integrating the module, if these points are not followed, the module and
end user equipment may fail or malfunction.
Tip or Information –
Provides advice and suggestions that may be
useful when integrating the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

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Related Documents
•SIM INTEGRATION DESIGN GUIDE 80000NT10001A
•NE866B1_NL865B1_AT_Commands_Reference_Guide 80534ST10817A
•Telit EVB User Guide 1VV0301249
•xL865_IFBD_HW_USER_GUIDE 1VV0301451

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2. GENERAL PRODUCT DESCRIPTION
Overview
The NL865B1 is the Category NB1 - aka Narrowband IoT (NB-IoT) - evolution in the
widely deployed Telit xL865 product family. Specified in the Release 13 of the 3GPP
standard, Cat NB1 devices are specifically tailored for IoT applications, offering optimized
power consumption and enhanced coverage. In addition, with its square 24.4 x 24.4 mm
VQFN footprint, the NL865B1 is designed for size sensitive applications.
This next generation of products supports the new features specified by 3GPP to boost
IoT applications, such as the Power Saving Mode (PSM) and the extended Discontinuous
Reception (eDRX), which allow the devices to wake up periodically to deliver only very
small amounts of data to the network and then go back to sleep for most of the time, thus
allowing longer battery operation. Enhanced coverage, with up to +20dB in maximum
coupling loss (MCL) compared to the other cellular technologies, is also one of the key
benefits of this new LTE flavor. LTE Cat NB1 devices are therefore optimized in cost, size
and power consumption compared to higher UE categories. These advantages make the
NL865B1 the perfect platform to enable a quick implementation of LTE technology in
IoT/M2M where low cost and low power are more relevant than high speed.
The NL865B1 helps increase the addressable market for LTE technology to include a
broad range of new applications and use cases best served with lower maximum data
rate, ultra-low power, reduced complexity and cost. Some examples are smart metering,
smart parking, smart agriculture, waste collection, industrial sensors, healthcare monitors,
home automation, and many more low data rate IoT devices. The NL865B1 is offered in a
dual-band configuration for deployment in the European and Chinese NB-IoT networks,
either in in-band, guard-band or standalone mode; additional regional variants will follow.
It is highly recommended for new designs, but also in particular as a migration path for
existing GPRS devices, both new and updated designs benefit from a significant
extension in life-cycle with LTE Cat NB1.
The NL865B1 supports embedded SIM chip as a mounting option, making it the ideal
solution for durable and rugged designs, and reducing BOM cost and size on the customer’s
application.

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Product Variants and Frequency Bands
NL865B1 bands combinations are listed below:
Product 2G Band
(MHz) 3G Band (MHz) 4G Band (MHz) Region
NL865B1-E1 B20 (800)
B8 (900) Europe
Refer to Chapter 13 for details information about frequencies and bands.
Target market
The NL865B1 can be used for IoT applications, where low power consumption and
enhanced coverage are required rather than high speed data, for example:
•Smart metering
•Smart parking
•Smart agriculture
•Waste collection
•Industrial sensors
•Healthcare monitors
•Home automation

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Main features
Function Features
Modem •NB-IoT cellular modem for low BW data communication
•Real Time Clock
•Internal IP stack
Interfaces •Main UART for AT commands
•Auxiliary UART TX for logging
•I2C
•SPI
•GPIOs
•ADC
•Antenna ports

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TX Output Power
Band Power class
LTE All Bands Class 3 (23dBm)
RX Sensitivity
Product Band Sensitivity (dBm)
NL865-B1-E1 B8, B20 -113
Mechanical specifications
2.7.1. Dimensions
The overall dimensions of NL865 family are:
Length: 24.4 mm
Width: 24.4 mm
Thickness: 2.45 mm
NOTE:
A typical label height of 0.1 mm needs to be considered additionally
to the module heights.
2.7.2. Weight
The nominal weight of the module is 2.5 grams.

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Temperature range
Case Range Note
Operating Temperature
Range
–20°C ÷ +55°C
The module is fully
functional(*) in all the
temperature range, and it
fully meets the 3GPP
specifications.
–40°C ÷ +85°C The module is fully functional (*) in all the
temperature range.
Storage and non-
operating Temperature
Range –40°C ÷ +85°C
(*) Functional: the module is able to make and receive data calls and SMS.

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3. PINS ALLOCATION
Pin-out
Pin Signal I/O Function Type Comment
Asynchronous Serial Port - Prog. / Data
7TXD I Serial data input
from DTE CMOS 1.8V
8RXD O Serial data output
to DTE CMOS 1.8V
Asynchronous Auxiliary Serial Port 2 / I2C
45 TX_AUX O Auxiliary UART
(TX Data to DTE) CMOS 1.8V Primary Logging Port
44 I2C_SCL I/O I2C Clock CMOS 1.8V
6 I2C_SDA I/O I2C Data CMOS 1.8V

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SIM card interface
9SIMVCC -
External SIM
signal – Power
supply for the
SIM
1.8V Only See next
chapters
10 SIMRST O External SIM
signal – Reset CMOS 1.8
11 SIMCLK O External SIM
signal – Clock CMOS 1.8
12 SIMIO I/O External SIM–
Data I/O CMOS 1.8
29 SIMIN/GPIO_0
5(*) I SIM Presence input CMOS 1.8 See next chapters
ADC
13 ADC_IN1 AI Analog/Digital
converter input A/D Accepted
values 0 to
1.8V DC
RF Section
34 ANT I/O LTE Main
Antenna (50 ohm) RF
General Purpose I/O's
42 GPIO01 I/O General purpose
I/O 1 CMOS 1.8
41 GPIO_02 I/O General purpose
I/O 2 CMOS 1.8
40 GPIO_03 I/O General purpose
I/O 3 CMOS 1.8
39 GPIO_04 I/O General purpose
I/O 4 CMOS 1.8

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29 (*)GPIO_05/SI
M_IN I/O
General purpose
I/O 5
SIM Presence
input
CMOS 1.8 Default is
SIMIN
28 GPIO_06 I/O General purpose
I/O 6 CMOS 1.8
27 GPIO_07 I/O General purpose
I/O 7 CMOS 1.8
26 GPIO08 I/O General purpose
I/O 08 CMOS 1.8
Miscellaneous Functions
47 RESET* I Reset Input VBATT Pull up to VBATT
(10KΩ)
48 SLP_IND O Modem Sleep or
PSM Indication CMOS 1.8 Do not
Drive this
pad
43 VAUX/POWE
RMON O 1.8V stabilized output Power
19 LP_WAKE I LPM / PSM
Wake Up Analog Pull up to
VAUX
(1MΩ)
Power Supply
38 VBATT - Main power supply
(Baseband) Power
37 VBATT_PA - Main power
supply (RF) Power
23 GND - Ground Power
32 GND - Ground Power

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33 GND - Ground Power
35 GND - Ground Power
36 GND - Ground Power
46 GND - Ground Power
Reserved pins
1RESERVED - RESERVED
2RESERVED - RESERVED
3RESERVED - RESERVED
4RESERVED - RESERVED
5 RESERVED - RESERVED
14 RESERVED - RESERVED
15 RESERVED - RESERVED
16 RESERVED - RESERVED
17 RESERVED - RESERVED
18 RESERVED - RESERVED
20 RESERVED - RESERVED
21 RESERVED - RESERVED
22 RESERVED - RESERVED
24 RESERVED - RESERVED
25 RESERVED - RESERVED
30 RESERVED - RESERVED
31 RESERVED - RESERVED

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WARNING:
Reserved pins must not be connected
NOTE:
The functions marked with (*) are not avalable on early samples and
will be supported on future release.
For more information, please refer to the related SW documentation