Janus remote communications Lte910cf User manual

LTE910CF CAT1 Embedded

Cellular Modem User Manual

Bulletin

JA03-UM-LTE-Cat1

Revision P01

Date 04 April 2018

LTE910CF Plug-In Hardware User Manual JA03-UM-LTE-Cat1 Page 2 Rev: P01 Date: 04/04/18

TABLE OF CONTENTS

TABLE OF CONTENTS and DISCLAIMER .............................................................................................................................. 2

1 APPLICABILITY TABLE ........................................................................................................................................................ 3

2 REFERENCES ...................................................................................................................................................................... 3

2.1 Janus Document List ............................................................................................................................................... 3

2.2 Telit Document List .................................................................................................................................................. 3

3 OVERVIEW ........................................................................................................................................................................ 4-6

3.1 Introduction ............................................................................................................................................................. 4

3.2 Preview .................................................................................................................................................................... 4

3.3 LTE Features ............................................................................................................................................................ 5

3.4 LTE Block Diagram .................................................................................................................................................. 5

3.5 FOTA Notice ............................................................................................................................................................ 6

4 INTERFACES ................................................................................................................................................................... 6-15

4.1 Inerface Voltage Selection ....................................................................................................................................... 6

4.2 Serial Interface......................................................................................................................................................7-8

4.3 Power Supply .......................................................................................................................................................... 9

4.4 Audio Interface ........................................................................................................................................................ 9

4.5 Plug-In Pin-Out ...................................................................................................................................................... 10

4.6 VRTC Details ......................................................................................................................................................... 11

4.7 GPIO Details ..................................................................................................................................................... 11-14

4.8 Internal Interfaces .................................................................................................................................................. 14

4.9 LED Status Indicators ............................................................................................................................................ 14

4.10 RF Interface ........................................................................................................................................................... 15

4.11 SIM Card Interface ................................................................................................................................................ 15

4.12 Header Interface Mounting Options ...................................................................................................................... 15

4.13 Screw Mounting .................................................................................................................................................... 15

5 LTE910CF TECHNICAL SPECIFICATIONS ...................................................................................................................16-23

5.1 Electrical Speciﬁcations ................................................................................................................................... 15-19

5.2 Mechanical Speciﬁcations..................................................................................................................................... 20

5.3 Setting Up a Terminal Emulator for use with the LTE910CF Modem ...............................................................21-23

6 DESIGN CONSIDERATIONS .............................................................................................................................................. 24

6.1 Minimum Required Module Pin Connects............................................................................................................. 24

6.2 Debug .................................................................................................................................................................... 24

APPENDICES ........................................................................................................................................................................ 25

Approvals .............................................................................................................................................................. 25

Safety .................................................................................................................................................................... 25

Antenna Care and Replacement ........................................................................................................................... 25

Abbreviations ......................................................................................................................................................... 25

Ordering Information ............................................................................................................................................. 26

Revision History..................................................................................................................................................... 26

DISCLAIMER

The information contained in this document is the proprietary information of Connor-Winﬁeld Corporation and its afﬁliates (Janus Remote Communication). The contents are conﬁdential and any disclosure

to persons other than the ofﬁcers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Connor-Winﬁeld, is strictly prohibited. Connor-Winﬁeld

makes every effort to ensure the quality of the information it makes available. Notwithstanding the foregoing, Connor-Winﬁeld does not make any warranty as to the information contained herein, and does

not accept any liability for any injury, loss or damage of any kind incurred by use of or reliance upon the information. Connor-Winﬁeld disclaims any and all responsibility for the application of the devices

characterized in this document, and notes that the application of the device must comply with the safety standards of the applicable country, and where applicable, with the relevant wiring rules. Connor-

Winﬁeld reserves the right to make modiﬁcations, additions and deletions to this document due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and

without notice. Such changes will, nevertheless be incorporated into new editions of this application note.

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1 APPLICABILITY TABLE

Product Part Number

LTE910CF v6.00

LTE910CF v7.00

2 REFERENCES

2.1 Janus Document List

Janus Application Note 117 - FOTA (Firmware Over The Air)

2.2 Telit Document List

LTE910CF

Our modem uses Telit module LE910 V2.

Please refer to Telit’s website at www.telit.com for the latest information on the LE910 Module.

Telit LE910 V2 AT Commands Reference Guide

Telit LE910 V2 Hardware User Guide

Telit HE/UE910, UL865 Digital Voice Interface Application Note

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3 OVERVIEW

3.1 Introduction

The User Manual for the Plug-In Modem devices is intended to illustrate how users can integrate and implement

the features of each communication version of the device. The common factors are explained in detail, as well as

special considerations and diagrams for each module. The module differences are highlighted in this manual for

design considerations for future model placement.

3.2 Preview

The Plug-In Modems are self-contained, multi-band, globally capable, M2M communication devices designed

to provide a comprehensive solution to application problems for our M2M customers. They utilize the proven

technology of Telit’s certiﬁed modules for their core communications engines.

3.2.1 Functional Description

Cellular

• LTE (V6.00)

• LTE/HSPA/UMTS (V7.00)

USB

• HS/FS USB 2.0 Device (480Mb/s)

Physical Dimensions

• Length and width of all Plug-In devices are equal

• Heights of different devices will vary

(TOP VIEW)

.047 DIA (49)

.100 TYP

1.100

.100 TYP

.050

2.400

2.300

PIN 1 PIN 25

PIN 26PIN 49

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LTE910CF v7.00 (AT&T)

• Multi-Band Support

• LTE Band 1900 (B2), 1700 (B4), 850 (B5), 700 (B12/B13)

• UMTS/HSPA+ Band 850 (B5), 1900 (B2)

• Output Power

• Class 3 (0.2W) @ LTE

• Class 3 (0.25W) @ WCDMA

• Data

• LTE: DL: Up to 10Mbps, UL: Up to 5Mbps

• HSPA: DL: Up to 42Mbps, UL: Up to 5.76 Mbps

• UMTS: DL: Up to 384Kbps, UL: Up to 384Kbps

LTE910CF v6.00 (Verizon)

• Tri-Band Support

• LTE Band 1900 (B2), 1700 (B4), 700 (B13))

• Output Power

• Class 3 (0.2W, 23dBm) @ LTE

• Data

• LTE: DL: Up to 10Mbps, UL: Up to 5Mbps

Features for Both v6.00 & v7.00

• Control via standard and extended AT command set

• SIM application Tool Kits 3GPP TS 51.014

• SIM access proﬁle

• IP stack with TCP/UDP protocol support

• SMS Support

• Through hole for screw mount

• Dimensions: 2.5” x 1.4” x 0.325”

• Operational Temperature Range: -40°C to 85°C

• Internal Switching Regulator:

• Input Voltage Range: 4.75 to 5.25Vdc (5Vdc nominal)

• Supply disable via terminal input pin

• Variable logic level (UART/GPIO)

• Adjustable from 1.8 - 5.0Vdc

• Defaults to 2.85v

• SIM Card

• Standard locking SIM card socket

• Cellular, Rx Diversity & MIMO DL 2x2 via Hirose U.FL

miniature RF connector

3.4 Block Diagram

3 OVERVIEW continued

3.3 Features

Figure 1 LTE910CF CAT1 Block Diagram

TELIT

LE910

TELIT

LE910

SIM CARD

Switching Regulator

LTE910CF

GPIO2 : USER LED

USB

VSel UART (AT)

VSel UART (TRACE)

VSel GPIO (3-7)

5 VDC

ENABLE

1.8v PWRMON

RESET

ON/OFF

1.8v VRTC

GPIO1 : Cellular LED

1.8v DVI

LDO

LDO 2.85v

Translator

1.8v UART (AT)

1.8v UART (TRACE)

1.8v PWRMON

VSel PWRMON

1.8v UART (AT)

1.8v UART (TRACE)

1.8v PWRMON Enable

Enable

1.8v GPIO

1.8v GPIO9 / I2C SDA

1.8v GPIO10 / I2C SCL

Reference

VL

2.85v Vo

Select

Vo

Select VSel VAUX

VSel

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3 OVERVIEW continued

3.5 FOTA Notice

The LTE910CF is equipped with a variable voltage interface solution. This allows the user to match the

device to the system’s level without extra hardware. Once a voltage has been injected, the unit will swap

to the chosen voltage immediately for the affected I/O.

This is controlled via the VL IN signal, in which a user may inject a chosen interface voltage to utilize. This

swap is done via a break-before-make mechanism when changing to or from the default voltage level,

allowing for on the ﬂy voltage changes if necessary.

The VL IN signal contains a 7M Ohm pull down resistor, and the operation of the voltage selection can be

referenced as follows:

Truth Table:

VL_IN: Floating Ground 1.5v - 5.5v

I/O level: 2.85v 2.85v 1.5v - 5.5v

Affected I/O:

1. UART (AT, TRACE)

2. GPIO (3-7)

3. VAUX

VAUX Adjustment allows feedback as well as legacy access if previously utilizing a plug in implementation

with VAUX as the reference.

Note to pay attention of these changes so there are no adverse effects on a previous Plug in Modem implementation.

The certiﬁcation of the following devices for use on the Verizon Wireless network REQUIRES that the

end user implement an automated FOTA procedure on their devices that would allow the cellular module

ﬁrmware to be updated if required:

LTE910CF V3.0 LTE910XF V6.0

LTE910CF V6.0 LTE910XF V8.0

Failure to implement an automated FOTA procedure violates the certiﬁcation requirements of the cellular

modem and may result in units becoming unusable on the cellular network in the future. Your end device

must support the ﬁrmware over the air update for the cellular modem

You may use your own FOTA system to update the cellular modem ﬁrmware over the air or use the

Verizon Wireless FOTA system. FOTA services may also be available from other 3rd party vendors.

To obtain Verizon Wireless FOTA system information and technical speciﬁcations, contact VZW.FOTA-

Services@VerizonWireless.com.

4 INTERFACES

4.1 Interface Voltage Selection

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4 INTERFACES

4.2 Serial Interface

4.2.1 UART Serial Port

The serial interface is a CMOS level UART. Default Communications settings for this port are as follows:

• Baud Rate: 115.2 kbps

• Bits: 8

• Stop Bits: 1

• Parity: None

• Hardware Handshaking: Yes

The LTE910CF does not support autobaud, and must be changed via the AT+IPR command. It is defaulted to

115200 bps

Note: If you are not using Hardware Handshaking, please note that RTS must be connected to GROUND for proper communications

where ﬂow control is unused.

4.2.1.1 UART Level Translation

The electrical limits for the UART are listed in the electrical characteristics section. Please be aware of these

limits, as operating outside of them may damage the unit. If the limits must be exceeded, level translation can

be used.

An example of basic translation for RXD/TXD only is found below.

Although an external source for the level translation can be used, VAUX can be used as the reference instead.

However, because some Plug-In Modems require AT commands to control VAUX, PWRMON may be used as

an enable to an external reference. Do not use PWRMON directly as the reference.

Note that the UART Level Translation example remains in this guide for legacy purposes when designing a system for multiple Plug in Modems.

The LTE910CF is equipped with interface voltage adjustment, negating the need for translation.

4.2.2 USB Port

The Plug-In modems that are USB ready include an integrated universal serial bus (USB) transceiver, compliant

with USB 2.0 speciﬁcations. High data rates for the USB enabled modems are only available over the USB

interface, as the UART has a maximum baud rate of <1Mbps. In order for proper power-up of the Plug-In

Modems, the USB_VBUS line MUST be disconnected until the unit is otherwise fully powered and on. If the

USB_VBUS line is attached and powered before the main power is brought up and the module turned on, power

sequencing issues may occur.

Note: You must implement the USB interface in order to locally update radio ﬁrmware for CDMA/EV-DO applications..

Figure 2 UART Level Translation Example

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Figure 3 USB Connection Diagram

4 Interfaces continued

4.2.2 USB Port continued

4.2.2.1 USB Connection Diagram

When VBUS_ENABLE is HIGH the VBUS 5.0v signal will be passed to USB_VBUS, (pin 29) turning the USB ON.

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Figure 4 DVI Block Diagram

4.4 Audio Interface

4.4.1 LTE910CF

The 910CF modules use a DVI audio interface which will not work with the analog audio inerface of the other Plug-

In modems. The LTE910CF supports PCM master mode and can use a CODEC to convert the interface to analog.

Below is a block diagram based on DVI and the max 9867 CODEC with GPIO 9 and 10 being used for I2C control

of the CODEC.

Please refer to the referenced DVI Application Notes for full information and example schematics utilizing the

MAX9867 Audio CODEC.

4 Interfaces continued

4.3 Power Supply

The module’s power supply accepts input voltages from 4.75Vdc to 5.25Vdc and requires a nominal current

sourcing capacity of 5W (maximum 10W).

Power Supply

A good understanding of the load transients is required in order to meet the power requirements of a cellular

radio. Power supply design, thermal management and layout are outside the scope of this document. Please

refer to power supply manufacturers for product documentation and design application notes.

Cellular Load Transients

Cellular radios use a mix of modulation schemes including, but not limited to, TDMA and CDMA. In GSM/

GPRS systems the transmission and reception of data is achieved via Time Division Multiple Access (TDMA).

TDMA transmission is made up of RF bursts that cause 2A current pulses at the supply input of the cellular

radio. These current pulses occur at a frequency of 216 Hz and can persist for 1.2 to 2.4ms.

On Board Regulator

This Plug-In module is designed with a switching regulator to power the cellular radio. The regulator can

receive an input voltage of 4.75 to 5.25VDC.

Note: The regulator input is capable of withstanding 6VDC Maximum. This is outside the recommended operating voltage of

the Plug-In modules but but is helpful to know when designing input transient circuitry.

Plug-In Module Input Supply Requirements

The current values are given in average units due to the pulsed nature of the transmission scheme. It

is recommended that your supply source the full peak current value of the transmission pulse in order

to maintain proper cellular operation. The use of bulk output capacitors on your supply allows for a less

powerful supply.

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4 Interfaces continued

4.5 Plug-In Pin-Out

PIN STANDARD POWER- PULL

PIN NAME DESCRIPTION I/O SIGNAL ON STATE TYPE NOTE

1 SUPPLY Positive Supply Input Power N/A N/A

2 SUPPLY Positive Supply Input Power N/A N/A

3 ENABLE SUPPLY Enable/Disable Supply Input N/A PULL-UP to Vin: 681k 1

4 RXD UART - Transmit Line Output N/A N/A 6

5 DSR UART - Data Set Ready Output N/A N/A 6

6 CTS UART - Clear to Send Output N/A N/A 6

7 RING UART - Ring Indicator Output N/A N/A 6

8 DCD UART - Data Carrier Detect Output N/A N/A 6

9 TXD UART - Receive Line Input N/A N/A 6

10 DTR UART - Data Terminal Ready Input N/A N/A 6

11 RTS UART - Request to Send Input N/A N/A 4

12 GROUND Supply Reference Power N/A N/A

13 TRACE_TX Debug UART - Transmit Line Output N/A N/A 6

14 TRACE_RX Debug UART - Receive Line Input N/A N/A 6

15 USER LED USER LED Output N/A N/A 6

16 CELLULAR LED Cellular Status Output N/A N/A 6

17 SERVICE Unused N/A N/A N/A 5

18 PWRMON Power Monitor Output Output N/A PULL-DOWN:1M 6

19 ON_OFF Toggle Cellular Radio On Off State Input N/A PULL-UP to VTRC: 47k 1

20 RESET Reset Cellular Radio Input N/A PULL-UP: 47k 1

21 DVI WAO DVI Word Alignment WCLK N/A N/A 6

22 DVI RX DVI Received Data SDIN N/A N/A 6

23 DVI TX DVI Transmitted Data SDOUT N/A N/A 6

24 DVI CLK NDVI Data Clock BCLK N/A N/A 6

25 GROUND Supply Reference Power N/A N/A

26 GROUND Supply Reference Power N/A N/A

27 USB_D- USB Differential Data (-) CMOS Bi-Direction N/A N/A

28 USB_D+ USB Differential Data (+) CMOS Bi-Direction N/A N/A

29 USB_VBUS USB Supply Power N/A N/A

30 VL_IN Interface Voltage Reference Analog Input N/A PULL-DOWN: 7M 3

31 GPIO_9 12C Data CMOS Bi-Direction INPUT N/A

32 GPIO_8 12C Clock CMOS Bi-Direction INPUT N/A

33 GPS_RX Unused N/A N/A N/A 5

34 GPS_TX Unused N/A N/A N/A 5

35 GPS_RESET Unused N/A N/A N/A 5

36 GPIO_7 General Purpose I/O Bi-Direction INPUT N/A 6

37 GPIO_6 General Purpose I/O Bi-Direction INPUT N/A 6

38 GPIO_5 General Purpose I/O Bi-Direction INPUT N/A 6

39 GROUND Supply Reference Power N/A N/A

40 GPIO_4 General Purpose I/O Bi-Direction INPUT N/A 6

41 GPIO_3 General Purpose I/O Bi-Direction INPUT N/A 6

42 GPIO_2 Unused N/A N/A N/A 5

43 GPIO_1 Unused N/A N/A N/A 5

44 DAC Unused N/A N/A N/A 5

45 ADC2 Unused N/A N/A N/A 5

46 ADC1 Analog to Digital Converter Analog Input N/A N/A 6

47 VRTC Cellular Radio External RTC Supply Power N/A N/A

48 VAUX Reference Voltage Analog Output N/A N/A

49 GROUND Supply Reference Power N/A N/A

Notes:

1. It is required that this input be controlled by an Open Collector/Drain Output. Do not use an external pull-up resistor; a pull-up is included internal to the module.

2. Not currently implemented

3. VL Input may be ﬂoating or grounded if not being used.

4. RTS must be connected to GROUND if ﬂow control is not used.

5. Not used on the LTE910CF

6. Refer to the electrical speciﬁcations for I/O levels

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4 Interfaces continued

4.6 VRTC Details

The VRTC pin brings out the real time clock supply, which is separate from the rest of the part. This allows only the

RTC to be ON when all other parts of the device are OFF. A backup capacitor can be added to this pin to increase

RTC autonomy while powering the device from a battery. The CDMA910CF cannot take advantage of the VRTC

functionality.

No devices should be powered from this pin.

Equations:

C = 3600 * [(Btime * IRTC)/(VRTC - VRTCmin)]

Btime = [C * (VRTC - VRTCmin)/(IRTC * 3600)]

Where:

VRTC – The Starting voltage of the capacitor (Volt)

VRTCmin – The minimum voltage acceptable for the RTC circuit. (Volt)

IRTC (Ampere) – The current consumption of the RTC circuitry when VBATT = 0

Btime - Backup Time (Hours)

C = Capacitor value (Farads)

Values for the GSM865CF/CDMA864CF/UMTS864CF

VRTC = 2.05v Nominal

VRTC minimum input voltage to function = 1.1v

IRTC = 10uA nominal

Values for the LTE910CF

VRTC = 1.8v Nominal

VRTC minimum input voltage to function = 1.1v

IRTC = 2uA nominal

Values for the EVDO910CF

VRTC = 3.1v Nominal

VRTC minimum input voltage to function = 2.0v

IRTC = 1.1uA nominal

Values for the CDMA910CF

VRTC = N/A

VRTC minimum input voltage to function = N/A

IRTC = N/A

For Example, using the LTE910CF numbers:

Btime = 96 hours (4 days)

C = 1.0F

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4 Interfaces continued

4.7 GPIO Details

GPIO are conﬁgurable as input, output, and alternate function. Conﬁguration is controlled by AT commands.

Alternate functions include cellular status, ALARM pin function, temperature monitor indication and DAC output.

4.7.1 Using a GPIO Pad as INPUT

The GPIO pads, when used as inputs, can be connected to a digital output of another device and report its status,

provided this device has interface levels compatible with the Voltage levels of the GPIO of the module.

4.7.2 Using a GPIO Pad as OUTPUT

The GPIO pads, when used as outputs, can drive CMOS digital devices or compatible hardware. When set as

outputs, the pads have a push-pull output.

4.7.3 Analog to Digital Converter

ADC Description

1 Analog to digital converter input

4.7.4 I2C

The I2C interface is an alternate function of the modem’s GPIO, for the LTE910CF, those two signals are designated for

GPIO 9 (SDA) and GPIO 10 (SCL) and are 1.8V logic level to match the DVI interface for easy usage with a codec. The

signals are not pulled up on the Plug-In module and must be pulled up externally as they may also be used as spare

GPIO.

Please reference the Telit AT Command Guide for details on the I2C commands.

4.7.5 ENABLE Pin

Input Logic State Description

High-Z Active state

0 Shutdown

Notes:

1. It is required that this input be controlled by an open collector/drain output. Do not use an external pull-up resistor, a pull-up to VIN is included

internal to the Modem.

2. The ENABLE pin is offered as a means to turn off the on-board regulator for when a full power cycle is needed or an ultra low power state is required.

The ENABLE pin is not intended to be used as a means of turning the Modem off. use the ON/OFF pin to turn the Modem on or off.

3. Shut down state must be held for 10ms before returning to active state.

4. The regulator is operational 2mS after active state is entered.

Figure 5 Enable Pin

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4 Interfaces continued

4.7 GPIO Details continued

4.7.6 RESET Pin

Input Logic State Description

High-Z Active state

0 Reset state

Notes:

1. It is required that this input be controlled by an open collector/drain output. Do not use an external pull-up resistor, a pull-up is included

internal to the Modem.

2. The RESET pin is offered as a means to reset the Modem when and if the Modem becomes unresponsive. The RESET pin is not

intended to be used as a means of turning the Modem off. Use the ON/OFF pin to turn the Modem on or off.

3. RESET state must be held for at least 200ms before returning to active state.

4.7.7 ON/OFF Pin

Input Logic State Description

High-Z Modem turned ON or OFF after input returns to this state.

0 Toggle Modem ON or OFF

Notes:

1. It is required that this input be controlled by an open collector/drain output. Do not use an external pull-up resistor, a pull-up is included internal to

the Modem.

2. The ON/OFF pin is offered as a means to power-on and power-down the Modem. When the Modem powers-down it informs the cell tower

that it is powering down and will not be communicating with the tower any more. This is considered a controlled power-down.

3. After toggling the power state of the Modem, wait until PWRMON indicates chosen state before toggling the power state again.

4. To turn ON the plug-in module, the ON_OFF input must be tied low for 5 seconds then released.

5. To turn OFF the plug-in module, the ON_OFF input must be tied low for 3 seconds then released.

6. Optionally the Modem may be powered-down with the use of AT commands.

7. It is required to stop driving terminal inputs high when turning ON the Plug-In module by ﬂoating or bringing them low. If this is not done, power

sequencing issues may occur.

Figure 6 Reset Pin Diagram

Figure 7 On / Off Pin Diagram

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4 Interfaces continued

4.7 GPIO Details continued

4.7.8 PWRMON Pin

Output Logic State Description

0 Modem powered-down

1 Modem powered-on

Notes:

1. Used in conjunction with ON/OFF pin to control power-on and power-down state.

2. During a power down, it is required to stop driving terminal inputs high by ﬂoating or bringing them low. If this is not done, the PWRMON output will

not transition low. On the GSM865CF and LTE910CF, this will cause the VAUX output to remain active.

4.7.9 VAUX

A regulator power supply output that is provided in order to supply small devices from the module itself.

When PWRMON is HIGH, VAUX will be ON. When PWRMON is LOW, VAUX will be OFF. On the LTE910CF, the

VAUX signal voltage will match to the VL IN voltage if utilized.

4.8 User LED

This module has GPIO2 connected to the User LED pin of the Modem. The user application can use this to control

an LED or act as an additional GPIO. See ﬁgure 8 for recommended connection of an LED.

4.9 LED Status Indicators

The LED Status output is used to drive an external LED to give feedback on the current operation. See ﬁgure 8 for

recommended connection of an LED. For the LTE910CF, this is an alternate function of GPIO1 and must be set via

the AT#GPIO command. The status is deﬁned below.

4.9.1 Cellular LED Status (LTE910CF)

LED Status Device Status

Permanently Off Cellular radio is off

Permanently On On/Searching

Slow Blinking (0.3 sec on / 2.7 sec off) Registered

Fast Blinking (0.5 sec on / 0.5 sec off) Shutting down

Figure 8 LED Indicators Diagram

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4 Interfaces continued

4.10 RF Interface

There are two RF interfaces on the LTE910CF. A cellular and MIMO/RX diversity connector. The speciﬁcations

and requirements for these are as follows:4.10.1 LTE910CF Antenna Interface

Type: Hirose U.FL - MALE (Part Number: U.FL-R-SMT(10))

Pin Description

Center Pin RF signal

Outer Conductor Signal ground

4.11 SIM Card Interface

The SIM Card Interface allows the Modem to accept the subscriber card provided by the cellular telephone

provider. It can accommodate a 1.8v or 3.0v SIM card.

4.12 Header Interface Mounting Options

The Plug-In Modules’ header pin length has been chosen to allow for direct solder mount to a PCB of standard

thickness. If the user wishes to socket the Plug-In Module, they may do so as well by using the below part

numbers for reference:

Samtec 25 pin header: TSM-125-04-L-SV-A

Samtec 24 pin header: TSM-124-04-L-SV-A

Mating Samtec 25 pin connector: SLW-125-01-G-S

Mating Samtec 24 pin connector: SLW-124-01-G-S

Please note there are no Samtec SMT single row mating connectors. The only mating connector available is the

above listed THT version.

4.13 Screw Mounting

The LTE910CF allows for the use of a #4 machine screw to help keep a socketed module in place where

environmental variables may cause problems otherwise. If the user wishes to have a stand-off underneath

the module to help alleviate possible stress from mounting hardware, below are the Janus part numbers and

associated drawings for an available solution.

4-40 Hex Female Stand-off: MC-0356-G

4-40 3/16” Pan Head Phillips Machine Screw: MC-0357-G

Figure 9 Screw Diagram

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5 LTE910CF TECHNICAL SPECIFICATIONS

5.1 Electrical Speciﬁcation

5.1.1 Absolute Maximum Ratings

Parameter Min Typ Max Unit Note

VIN (DIGITAL INPUTS 2.85V CMOS) -0.5 - 3.35 Volt

VIN (DIGITAL INPUTS 1.8V CMOS) -0.3 - 3.1 Volt

VIN (Digital Inputs VL Selected) -0.3 - 5.5 Volt

Storage Temperature -40 - 85 °C

Supply (+) referenced to Supply (-) 0 - 6 Volt

Operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions is not implied. Exposure to Absolute

Maximum Rating conditions for extended periods of time may affect device reliability.

5.1.2 Recommended Operating Conditions

Parameter Min Typ Max Unit Note

Temperature -40 - 85 °C

Supply (+) referenced to Supply (-) 4.75 5.0 5.25 Volt

VL IN Selection 1.8 - 5.0 Volt

VAUX Output - 2.85 - Volt 1

VAUX Current - - 100 mA 1

Note: 1. When VL IN is utilized, VAUX will match VL.

5.1.3 Power Supply

Mode Average (mA) Mode Description

Switched Off

Terminal Disabled < 15µA Terminal disabled (ENABLE SUPPLY = 0)

Cellular Radio Off 0.4 Cellular module powered but switched off via ON_OFF pin

(PWRMON=0)

IDLE mode

AT+CFUN=1 LTE 13 Normal mode: full functionality of the module

WCDMA 15

AT+CFUN=4 11 Disabled TX and RX; module is not registered on the network

AT+CFUN=5 LTE 2 to 6 Depends on paging cycle

WCDMA 2

Operative mode

LTE Data call 190 Channel BW 5MHz, RB=1, TX=0dBm

LTE Data call Max power 500 Channel BW 5MHz, RB=1, TX=22dBm

WCDMA Voice 140 WCDMA voice call (TX = 9dBm)

WCDMA HSDPA Max power 440 WCDMA data call (RMC, TX = 23dBm)

Note: WCDMA only available on LTE910 V7.00

Note: Values are calculated based on power supply efﬁciency.

LTE910CF Plug-In Hardware User Manual JA03-UM-LTE-Cat1 Page 17 Rev: P01 Date: 04/04/18

5 LTE910CF TECHNICAL SPECIFICATIONS continued

5.1 Electrical Speciﬁcation continued

5.1.4 I/O Levels

5.1.4.1 1.8v Standard Interface Levels (USER LED)

Parameter Min Typ Max Unit Note

Input Voltage High - Vih 1.5 - 1.9 Volt

Input Voltage Low - Vil 0 - 0.35 Volt

Output Voltage High - Voh 1.6 - 1.9 Volt

Output Voltage Low - Vol 0 - 0.2 Volt

Typical Current Source/Sink = 100uA/1uA

5.1.4.2 2.85v Standard Interface Levels (UART, GPIO)

Parameter Min Typ Max Unit Note

Input Voltage High - Vih 1.85 - 2.85 Volt

Input Voltage Low - Vil 0 - 0.99 Volt

Output Voltage High - Voh 2.45 - 2.85 Volt

Output Voltage Low - Vol 0 - 0.4 Volt

Typical Current Source = 100uA/1uA

5.1.4.3 VL IN Selected Interface Levels (UART, GPIO)

Parameter Min Typ Max Unit Note

Input Voltage High - Vih VL*0.65 - VL Volt

Input Voltage Low - Vil 0 - VL*0.35 Volt

Output Voltage High - Voh VL-0.4 - VL Volt

Output Voltage Low - Vol 0 - 0.4 Volt

5.1.4.4 Cellular LED and USER LED Output Levels

Parameter Min Typ Max Unit Note

Output Voltage High - Voh 1.6 - 1.9 Volt

Output Voltage Low - Vol 0 - 0.2 Volt

Typical Current Source = 100uA

5.1.4.5 ADC Input Levels

Parameter Min Typ Max Unit Note

Input Voltage Range 0 - 1.2 Volt

AD Conversion - - 10 Bits

Input Resistance 1M - - Ohm

Input Capacitance - 1 - pF

5.1.4.6 Reset Pin Input Levels

Parameter Min Typ Max Unit Note

Input Voltage High - Vih 1.5 - 1.9 Volt

Input Voltage Low - Vil 0 - 0.35 Volt

It is required that this input be controlled by an Open Collector/Drain Output. Do not use an external pull-up resistor, a pull-up is included internal to the Modem.

LTE910CF Plug-In Hardware User Manual JA03-UM-LTE-Cat1 Page 18 Rev: P01 Date: 04/04/18

5.1.5 LTE Cellular Antenna Speciﬁcations:

5.1.5.1 LTE910CF v7.00 (AT&T)

Parameter Description

Frequency Range Depending on frequency bands provided by the network operator, the customer

should use the most suitable antenna for those frequencies.

Bandwidth WCDMA 1900 (B2): 140Mhz

WCDMA 850 (B5): 70Mhz

LTE 1900 (B2): 140Mhz

LTE 1700 (B4): 445Mhz

LTE 850 (B5): 70Mhz

LTE 700 (B17): 42Mhz

LTE 700 (B12): 47Mhz

Impedance 50Ω

Input Power >24 dBm Average power in WCDMA & LTE

VSWR Absolute Max ≤ 10:1

VSWR Recommended ≤ 2:1

5.1.5.2 LTE910CF v6.00 (Verizon)

Parameter Description

Frequency Range Depending on frequency bands provided by the network operator, the customer

should use the most suitable antenna for those frequencies.

Bandwidth LTE 1900 (B2): 140 MHz

LTE 1700 (B4): 445Mhz

LTE 700 (B13): 41Mhz

Impedance 50Ω

Input Power >24dBm Average Power

VSWR Absolute Max ≤ 10:1

VSWR Recommended ≤ 2:1

5 LTE910CF TECHNICAL SPECIFICATIONS continued

5.1 Electrical Speciﬁcation continued

LTE910CF Plug-In Hardware User Manual JA03-UM-LTE-Cat1 Page 19 Rev: P01 Date: 04/04/18

5 LTE910CF TECHNICAL SPECIFICATIONS continued

5.1 Electrical Speciﬁcation continued

5.1.6 USB Transceiver Speciﬁcations

Parameter Comments Min Typ Max Unit

USB_VBUS

Supply voltage 4.5 5.0 5.25 Volt

Input levels for low-/full speed

Receiver threshold (single-end) 0.8 - 2.0 Volt

Differential input sensitivity |D+ - D-|, Vin = 0.8V to 2.5V 0.2 - - Volt

Differential common-mode range Includes VDI 0.8 - 2.5 Volt

Output levels for low-/full speed

Low RL = 1.5 kΩ to 3.6 V - - 0.3 Volt

High RL – 15 kΩ to GND 2.8 - 3.6 Volt

Output signal crossover voltage 1.3 - 2.0 Volt

Terminations

Internal pull-up resistor VTRM to D+, VTRM to D- 1.425 1.5 1.575 kΩ

Internal pull-down resistor D= to GND, D- to GND 14.3 15 24.8 kΩ

High-Z state output impedance 0 V< VDD< 3.6 V; measured

at D+ and D- pins to GND 300 - - kΩ

Termination voltage An internal supply voltage, VTRM 3.0 3.3 3.6 Volt

Driver characteristics – full speed

Transition time:

Rise time CL = 50 to 125 pF 4 - 20 ns

Fall time CL – 50 to 125 pF 4 - 20 ns

Rise/fall time matching 90 - 111 %

Series output resistance D+, D- 28 33 44 Ω

Driver characteristics – low speed

Transition time:

Rise time CL = 50 to 600 pF 75 - 300 ns

Fall time CL – 50 to 600 F 75 - 30 ns

Rise/fall time matching 80 - 125 %

LTE910CF Plug-In Hardware User Manual JA03-UM-LTE-Cat1 Page 20 Rev: P01 Date: 04/04/18

5 LTE910CF TECHNICAL SPECIFICATIONS continued

5.2 Mechanical Speciﬁcation

Figure 10 LTE910CF Mechanical Dimensions

LTE910CF

Janus Remote Communications LTE910CF User manual

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