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Skywire® LTE LE910 Datasheet

NimbeLink, LLC

Download PDF Datasheet

Datasheet

Skywire® 4G LTE Cat 3
Embedded Cellular Modem
Datasheet
NimbeLink Corp
Updated: April 2018
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 1
Table of Contents
Table of Contents 2
Introduction 4
Orderable Part Numbers 4
Additional Resources 4
Product Overview 4
Block Diagram 5
Technical Specifications 6
Electrical Specifications 6
Absolute Maximum Ratings 6
Recommended Ratings & Module Pin out 6
Connectors J1 and J2 6
Connectors J3, X1, X2, X3 7
Mechanical Specifications 8
Mechanical Characteristics 8
Mating Connectors 8
Device Placement 8
Environmental Specifications 8
Important Design Considerations 9
ON_OFF Signal 9
Power Supply Requirements 9
Serial Communications 9
FOTA 10
Mounting Guidelines 11
Board to Board connectors approach 11
Solder to Board connection approach 13
Antenna Considerations 14
Primary Antenna Requirements 14
Diversity Antenna Requirements 15
GPS/GLONASS Antenna Requirements 15
Recommended Antennas 16
Certifications 16
Carrier Specific 16
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 2
Geography Specific 17
Federal Regulatory Licensing 17
End Product Labeling Requirements 17
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 3
1. Introduction
1.1 Orderable Part Numbers
Orderable Device
Firmware
Revision
Operating
Temperature
LTE Bands
Fallback?
Network Type
NL-SW-LTE-TSVG
17.01.571
-40 to +85˚C
B4, B13
No
Verizon
NL-SW-LTE-TSVG-B
17.01.573
-40 to +85˚C
B4, B13
No
Verizon
NL-SW-LTE-TEUG
17.00.523
-40 to +85˚C
B3, B7, B20
HSPA: B1, B5, B8
Europe
NL-SW-LTE-TNAG
17.00.503
-40 to +85˚C
B2, B5, B4, B17
HSPA: B2, B5
AT&T/T-Mobile
NL-SW-LTE-TNAG-B
17.01.502
-40 to +85˚C
B2, B5, B4, B17
HSPA: B2, B5
AT&T/T-Mobile
NL-SIM-COM
-35˚C to +85˚C
Verizon
NL-SIM-IND
-40˚C to +105˚C
Verizon
NL-SIM-ATT
-25˚C to +85˚C
AT&T
NL-SIM-TMO
-25˚C to +85˚C
T-Mobile
NL-SIM-VOD
-25˚C to +85˚C
Vodafone
1.2 Additional Resources
The following documents or documentation resources are referenced within this document.
Telit’s LE910 Hardware User Guide
1.3 Product Overview
Add robust cellular connectivity to your M2M devices with scalable radio technology with
Nimbelink's 4G LTE Cat 3 Skywire® cellular modem family. Nimbelink's extensive experience in
designing and building embedded solutions has made the NimbeLink Skywire embedded cellular
modem family the smallest on the market while allowing for easy integration of cellular
connectivity into new and existing products. Skywire modems end-device certification eliminates
the considerable cost, time and risk of the certification process, driving your products to market
faster. The Skywire's small footprint and standard 20 pin interface simplies migration to other
cellular technologies, ensuring long product life while allowing for easy product integration. The
modem is designed for volume production and is intended for OEMs to embed into end
equipment designs.
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 4
1.4 Block Diagram
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2. Technical Specifications
2.1 Electrical Specifications
2.1.1 Absolute Maximum Ratings
Parameter
Signal
Maximum Rating
Main Power Supply
VCC
4.3V
I/O Voltage Reference
VREF
5.5V
2.1.2 Recommended Ratings & Module Pin out
2.1.2.1 Connectors J1 and J2
Pin
Direction
Description
Min
Typical
Max
If not used
1
Input
Main Power supply
3.5V
3.9V
4.3V
Must be implemented
2
Output
UART data out, I/O level tied to VREF
VOL:
GND to
0.55V
VOH:
VREF x
0.67 to
VREF
Must be implemented
if USB not used,
No connection
3
Input
UART data in, I/O level tied to VREF
VIL:
GND to
0.15V
VIH:
VREF-0.4
V
to VREF
Must be implemented
if USB not used,
No connection
4
Input
Ground Pin
0
Must be implemented
5
Input
Controls HW_SHUTDOWN input on
Telit LE910, tie low for 200mS and
released to activate. Internally
pulled up to 1.8V. Drive with open
collector output only. Do not drive
high. Assert only in an emergency as
the module will not gracefully exit
the cellular network when asserted.
0
1.8V
No connection
6
Input
Supply for USB interface
3.0V
5V
5.25V
No connection
7
I/O
USB differential Data + signal
No connection
8
I/O
USB differential Data - signal
No connection
9
Input
Modem Data Terminal Ready input
VIL:
GND to
0.15V
VIH:
VREF-0.4
V
to VREF
Tie to GND
10
Input
Ground Pin
0
Must be implemented
11
Input
Ground Pin
0
Must be implemented
12
Output
Modem Clear to Send hardware flow
control output
VOL:
GND to
0.55V
VOH:
VREF x
0.67 to
VREF
No connection
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 6
13
Output
Signal drives the onboard LED
indicating network status. OFF =
Device OFF, Permanently ON =
Searching for Network & Not
Registered, Slow Blink = Registered
with full service, Permanently on =
call is active. See TelitLE910 manual
for additional information.
0
1.8V
No connection
14
Input
Voltage reference for offboard I/O
signals. This signal drives the input
voltage side of an onboard buffer
which converts all external I/O
voltage from VREF range to 1.8V
range to drive the onboard
TelitLE910 modem module.
1.65V
1.8V or
3.3V
5.5V
Must be implemented
15
Input
Ground Pin
0
Must be implemented
16
Input
Modem Request to Send hardware
flow control input
VIL:
GND to
0.15V
VIH:
VREF-0.4
V
to VREF
Tie to GND
17
I/O
Programmable GPIO_03 on
TelitLE910 module
0
1.8V
No connection
18
I/O
Programmable GPIO_02 on
TelitLE910 module
0
1.8V
No connection
19
Input
ADC_IN1 input on Telit LE910
module (8bit resolution, <6.6mV)
0
1.7V
No connection
20
Input
Modem On/Off signal. Assert low
for 1 to 2 seconds and then release
to activate start sequence. Drive
with open collector output.
Internally pulled up to internal I/O
rail with pull up. Do not use any
external pull ups. Note: If you want
modem to turn on automatically
when power is applied, permanently
tie this signal to GND.
0
1.8V
Must be implemented.
2.1.2.2 Connectors J3, X1, X2, X3
Connector
Designator
Description
Connector Location
J3
Micro SIM Connector
Bottom Side of Module
X1
Primary Antenna Connection
Topside of Module
X2
Diversity Antenna Connection
Topside of Module
X3
GPS/GNSS Satellite Receiver
Bottom Side of Module
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 7
2.2 Mechanical Specifications
2.2.1 Mechanical Characteristics
Parameter
Typical
Unit
Dimensions (excluding pin height, for solder to board
applications)
29.0 x 33.60 x 6.63
mm
Dimensions (including pin height, for board to board
connector applications)
29.0 x 33.60 x 10.73
mm
Weight
8
Grams
Connector Insertion/Removal
hundreds
Cycles
2.2.2 Mating Connectors
Connector
Designator
Manufacture
Populated on
Module
Recommended Mate
Mate Manufacture
J1, J2
3M
951110-2530-AR-PR
950510-6102-AR
3M
Acceptable alternate:
NPPN101BFCN-RC
Sullins Connector
Solutions
J3
Molex
786463001
Micro SIM Card
Micro SIM Card
X1, X2, X3
Hirose
U.FL-R-SMT(10)
CAB.011
Taoglas
2.2.3 Device Placement
Make sure the Skywire is installed in the correct orientation; failure to
do so will damage the device and void the warranty.
2.3 Environmental Specifications
Parameter
Min
Typical
Max
Unit
Note
Operating
Temperature
-40
25
+85
˚C
Storage
Temperature
-40
25
+85
˚C
Operating Humidity
20
90
%
Non-condensing
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 8
3. Important Design Considerations
3.1 ON_OFF Signal
To conserve power, the Telit LE910 does not automatically startup when power
is applied. The baseboard design must supply a means to assert the ON_OFF
signal for the specified time (between 1 to 2 seconds) and then released to
startup the module. After asserting the ON_OFF signal, software must wait for
15 seconds before attempting to communicate with the LE910. To make module
automatically start when power is applied, tie ON/OFF signal to GND
permanently. See Telit Hardware User Guide for additional details regarding the
ON_OFF signal.
3.2 Power Supply Requirements
The module will regularly consume high amounts of current on the Main Power
Supply (VCC), up to 1.5A during active transmits and receives. The baseboard
power supply should be designed to support peak currents up to 2 Amps. A
100uF capacitor should be placed near the VCC pin on the module to ensure
ample energy is available, with a low inductance path to the VCC pin. For
example power supply designs, there are multiple references available. See the
NimbeLink Skywire Development Kit schematic for a switching regulator
example, or reference the Telit Hardware User Guide which has an example of
both Linear and Switching regulator designs.
3.3 Serial Communications
The LE910 can communicate over UART and/or USB. Design should implement
one or both serial interfaces to be able to send commands to the modem.
3.4 Network Connection Status LED
The ON/nSLEEP signal on pin 13 drives the on-board LED indicating network
status. By default, the 4G LTE CAT3 module has this setting disabled. Use the
following commands to enable and save this feature.
First, configure the GPIO for alternate function:
AT#GPIO = 1,0,2
The modem should respond with:
OK
Next, set the desired LED behavior with this command:
AT#SLED=2,10,10
The modem should respond with:
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 9
OK
Finally, commit the changes to non-volatile memory so the setting will persist
across power down/power up:
AT#SLEDSAV
The modem should respond with:
OK
LED Status
Network Status Indication
Permanently OFF
Device OFF or setting disabled (see above)
Permanently ON
Searching for Network & Not Registered
Slow Blinking
Registered with full service
Permanently ON
Call is active (Module has been registered)
3.5 FOTA
LTE networks are constantly being updated, improved, and enhanced with new
features. As a result, carriers are making frequent network changes. Most will
not negatively affect devices connected to those networks, but occasionally an
update will prevent an unprepared device from re-connecting to the network
permanently.
To account for these future changes, FOTA (Firmware over the Air) capability is
being added to all cellular modules by each module manufacturer, and
NimbeLink supports this functionality in the Skywire family of embedded
modems. However, there is often a requirement to implement support for this
FOTA functionality in your device firmware.
As a developer using the Skywire modem, it is required that your device firmware
plan to accommodate FOTA updates after deployment. Failure to do so may
result in interruption of your device's cellular connectivity if the carriers implement
a network change. If the device can no longer access the network, FOTA cannot
be used to resolve the situation after the fact. The only way to restore
connectivity will be physical access to the device to perform the updates directly
on the device.
FOTA Instructions are available by contacting Nimbelink's product support team
at product.support@nimbelink.com.
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4. Mounting Guidelines
The Skywire embedded cellular modem supports multiple connection methods,
the two primary methods are board to board connectors and soldering directly to
the baseboard.
4.1 Board to Board connectors approach
The Skywire interface calls for two, 10 pin, 2mm pitch female receptacles spaced
22 mm apart.
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 11
There are many connector manufacturers that can be used; below is one readily
available product:
Manufacturer: Sullins Connector Solutions
Part Number: NPPN101BFCN-RC
Typical part drawing and footprint information for the connector:
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 12
4.2 Solder to Board connection approach
The module can be soldered directly to a PCB. The PCB should be designed
with two rows of ten, 0.8mm plated thru holes spaced 2mm apart. The two rows
should be 22mm apart. See drawing below for recommended footprint.
Measurements are in millimeters. U.FL locations are marked with circles, X1 and
X2 on top side of board, X3 is on the bottom side of the board. J3 is Micro SIM
card slot on bottom side of board.
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 13
5. Antenna Considerations
5.1 Primary Antenna Requirements
These tables are copied from Telit LE910 Hardware User Guide. Designers
should review latest LE910 Hardware User Guide to ensure the information is up
to date.
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 14
5.2 Diversity Antenna Requirements
These tables are copied from Telit LE910 Hardware User Guide. Designers
should review latest LE910 Hardware User Guide to ensure the information is up
to date.
5.3 GPS/GLONASS Antenna Requirements
The Skywire forwards the voltage supplied by the VREF pin to the GPS coax
connection, X3. This is to provide power to active GNSS antennas. When using
a passive antenna installed on the baseboard users must ensure that the coax
cable connection is kept as short as possible between the Skywire and the
mating PCB. Excess loss in long cables will significantly reduce GPS
performance. Users must also ensure that the passive antenna does not behave
like a DC short to ground since the Skywire provides voltage on the coax. When
using such an antenna you must use a DC blocking capacitor, Nimbelink
recommends a Samsung 56pF 0402 CL05C560FB5NNNC.
For GPS/GNSS, circularly polarized antennas are desired over linear and patch
topologies because they typically have 3dB improved sensitivity.
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 15
These tables are copied from Telit LE910 Hardware User Guide. Designers
should review latest LE910 Hardware User Guide to ensure the information is up
to date.
5.4 Recommended Antennas
Type
Manufacturer
Part Number
Primary & Diversity
Taoglas1
TG.30.8113
Primary & GPS
Taoglas1
MA250.A.LBI.001
Note 1: U.FL to SMA adapter required.
For applications not using the recommended antennas, developers must ensure
that the selected antenna(s) meet certain requirements. In order to maintain FCC
and carrier specific certifications the antennas cannot exceed the maximum gain
levels listed here:
Frequency
Max Gain (dBi)
700 MHz Band
9.16 dBi
1700 MHz Band
5.00 dBi
6. Certifications
6.1 Carrier Specific
NL-SW-LTE-TSVG Verizon ODI Certified
NL-SW-LTE-TSVG-B Verizon ODI Certified
NL-SW-LTE-TNAG PTCRB Certified, AT&T Certified, Rogers Certified
NL-SW-LTE-TNAG-B PTCRB Certified, AT&T Certified, Rogers Certified
NL-SW-LTE-TNAG and NL-SW-LTE-TEUG: Each carrier has different
requirements for activating the LE910 modem on their networks. For GSM
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 16
products, many accept the Telit PTCRB & GCF certification to allow device on
the network, however, recent carrier preferences may require the end product to
go through PTCRB & GCF certification in the final enclosure, antenna, and
software configuration.
6.2 Geography Specific
Federal Communications Commission (FCC47) part 22, 24
Complies with FCC47 Part 15 Class B Radiated and Conducted Emissions
7. Federal Regulatory Licensing
7.1 Export Control Classification Number (ECCN)
ECCNs are five character alpha-numeric designations used on the Commerce
Control List (CCL) to identify dual-use items for export control purposes. An
ECCN categorizes items based on the nature of the product, i.e. type of
commodity, software, or technology and its respective technical parameters.
All Skywire Modems: 5A992.c
7.2 Harmonized Tariff Schedule Code
HTS Code: 8517.62.0010
8. End Product Labeling Requirements
Device Uses Approved Radio: NL-SW-LTE-TSVG
Orderable Device
FCC ID
IC ID
NL-SW-LTE-TSVG
RI7LE910SV
5131A-LE910SV
NL-SW-LTE-TSVG-B
RI7LE910SV
5131A-LE910SV
NL-SW-LTE-TEUG
NL-SW-LTE-TNAG
RI7LE910NA
5131A-LE910NA
NL-SW-LTE-TNAG-B
RI7LE910NA
5131A-LE910NA
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interferences,
and (2) this device must accept any interference received, including interference
that may cause undesired operation.
PN 30012 rev 15 © NimbeLink Corp. 2018. All rights reserved. 17

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