Sierra Wireless HL7648 Users manual

AirPrime HL7648

Product Technical Specification

4119069

3.1

October 27, 2016

Product Technical Specification

Important Notice

Due to the nature of wireless communications, transmission and reception of data can never be
guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the Sierra Wireless modem are used
in a normal manner with a well-constructed network, the Sierra Wireless modem should not be used
in situations where failure to transmit or receive data could result in damage of any kind to the user or
any other party, including but not limited to personal injury, death, or loss of property. Sierra Wireless
accepts no responsibility for damages of any kind resulting from delays or errors in data transmitted or
received using the Sierra Wireless modem, or for failure of the Sierra Wireless modem to transmit or
receive such data.

Safety and Hazards

Do not operate the Sierra Wireless modem in areas where cellular modems are not advised without
proper device certifications. These areas include environments where cellular radio can interfere such
as explosive atmospheres, medical equipment, or any other equipment which may be susceptible to
any form of radio interference. The Sierra Wireless modem can transmit signals that could interfere
with this equipment. Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is
on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE POWERED OFF. When
operating, the Sierra Wireless modem can transmit signals that could interfere with various onboard
systems.

Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door

is open. Sierra Wireless modems may be used at this time.

The driver or operator of any vehicle should not operate the Sierra Wireless modem while in control of
a vehicle. Doing so will detract from the driver or operator’s control and operation of that vehicle. In
some states and provinces, operating such communications devices while in control of a vehicle is an
offence.

Limitations of Liability

This manual is provided “as is”. Sierra Wireless makes no warranties of any kind, either expressed or

implied, including any implied warranties of merchantability, fitness for a particular purpose, or
noninfringement. The recipient of the manual shall endorse all risks arising from its use.

The information in this manual is subject to change without notice and does not represent a
commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL,
GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING,
BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR
REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY
THIRD PARTY.

Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates aggregate liability
arising under or in connection with the Sierra Wireless product, regardless of the number of events,
occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the
Sierra Wireless product.

4119069 Rev 3.1 October 27, 2016 2

Product Technical Specification

Sales information and technical support,
including warranty and returns

Web: sierrawireless.com/company/contact-us/
Global toll-free number: 1-877-687-7795

6:00 am to 6:00 pm PST

Corporate and product information

Web: sierrawireless.com

Patents

This product may contain technology developed by or for Sierra Wireless Inc.

This product includes technology licensed from QUALCOMM®.

This product is manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more patents
licensed from InterDigital Group and MMP Portfolio Licensing.

Copyright

© 2016 Sierra Wireless. All rights reserved.

Trademarks

Sierra Wireless®, AirPrime®, AirLink®, AirVantage®, WISMO®, ALEOS® and the Sierra Wireless and
Open AT logos are registered trademarks of Sierra Wireless, Inc. or one of its subsidiaries.

Watcher® is a registered trademark of NETGEAR, Inc., used under license.

Windows® and Windows Vista® are registered trademarks of Microsoft Corporation.

Macintosh® and Mac OS X® are registered trademarks of Apple Inc., registered in the U.S. and other
countries.

QUALCOMM® is a registered trademark of QUALCOMM Incorporated. Used under license.

Other trademarks are the property of their respective owners.

Contact Information

4119069 Rev 3.1 October 27, 2016 3

Product Technical Specification

Versi on

Date

Updat es

1.0

May 05, 2016

Creation

2.0

August 05, 2016

Added 5.5 Power Supply Design

Updated:

 3.2 Current Consumption
 Table 39 Ordering Information

3.0

October 25, 2016

Updated:

 PWR_ON_N pull up resistor value from 47kΩ to 100kΩ
 7 FCC Legal Information

3.1

October 27, 2016

Updated 7 FCC Legal Information

Document History

4119069 Rev 3.1 October 27, 2016 4

Contents

INTRODUCTION ................................................................................................ 10

1.

1.1. Common Flexible Form Factor (CF3) .............................................................................. 10

1.2. Physical Dimensions ....................................................................................................... 10

1.3. General Features ............................................................................................................. 11

1.4. Architecture ..................................................................................................................... 12

1.5. Interfaces ......................................................................................................................... 13

1.6. Connection Interface ....................................................................................................... 13

1.7. ESD ................................................................................................................................. 14

1.8. Environmental and Certifications ..................................................................................... 14

1.8.1. Environmental Specifications ................................................................................... 14

1.8.2. Regulatory ................................................................................................................ 15

1.8.3. RoHS Directive Compliant ....................................................................................... 15

1.8.4. Disposing of the Product .......................................................................................... 15

1.9. References ...................................................................................................................... 15

2. PAD DEFINITION ............................................................................................... 16

2.1. Pad Configuration (Top View, Through Module) ............................................................. 20

3. DETAILED INTERFACE SPECIFICATIONS ..................................................... 21

3.1. Power Supply .................................................................................................................. 21

3.2. Current Consumption ...................................................................................................... 21

3.3. VGPIO ............................................................................................................................. 22

3.4. BAT_RTC ........................................................................................................................ 22

3.5. SIM Interface ................................................................................................................... 23

3.5.1. UIM1_DET................................................................................................................ 23

3.6. USB ................................................................................................................................. 24

3.7. Electrical Information for Digital I/O ................................................................................. 24

3.8. General Purpose Input/Output (GPIO) ............................................................................ 25

3.9. Main Serial Link (UART1) ................................................................................................ 25

3.10. POWER-ON Signal (PWR_ON_N) ................................................................................. 26

3.11. Reset Signal (RESET_IN_N) .......................................................................................... 27

3.12. Analog to Digital Converter (ADCs) ................................................................................. 27

3.13. Clock Interface ................................................................................................................. 28

3.14. Digital Audio (PCM) ......................................................................................................... 28

3.15. Debug Interfaces ............................................................................................................. 30

3.15.1. Trace Debug ............................................................................................................ 30

3.15.2. JTAG ........................................................................................................................ 30

4119069 Rev 3.1 October 27, 2016 5

Product Technical Specification

3.16. RF Interface ..................................................................................................................... 31

3.16.1. RF Connection ......................................................................................................... 31

3.16.2. RF Performances ..................................................................................................... 31

3.16.3. TX_ON Indicator (TX_ON) ....................................................................................... 32

4. MECHANICAL DRAWINGS ............................................................................... 33

5. DESIGN GUIDELINES ....................................................................................... 35

5.1. Power-Up Sequence ....................................................................................................... 35

5.2. Module Switch-Off ........................................................................................................... 35

5.3. Emergency Power OFF ................................................................................................... 36

5.4. Sleep Mode Management ............................................................................................... 36

5.4.1. Using UART1 ........................................................................................................... 36

5.4.2. Using USB ................................................................................................................ 36

5.5. Power Supply Design ...................................................................................................... 36

5.6. ESD Guidelines for SIM Card .......................................................................................... 37

5.7. ESD Guidelines for USB.................................................................................................. 38

6. RELIABILITY SPECIFICATION ......................................................................... 39

6.1. Reliability Compliance ..................................................................................................... 39

6.2. Reliability Prediction Model ............................................................................................. 39

6.2.1. Life Stress Test ........................................................................................................ 39

6.2.2. Environmental Resistance Stress Tests .................................................................. 40

6.2.3. Corrosive Resistance Stress Tests .......................................................................... 40

6.2.4. Thermal Resistance Cycle Stress Tests .................................................................. 41

6.2.5. Mechanical Resistance Stress Tests ....................................................................... 42

6.2.6. Handling Resistance Stress Tests ........................................................................... 43

7. FCC LEGAL INFORMATION ............................................................................. 44

8. ORDERING INFORMATION .............................................................................. 46

9. TERMS AND ABBREVIATIONS ........................................................................ 47

4119069 Rev 3.1 October 27, 2016 6

List of Figures

Figure 1.

Figure 2. AirPrime HL7648 Mechanical Overview (Top View and Bottom View) ........................... 13

Figure 3. Pad Configuration ............................................................................................................ 20

Figure 4. PCM Timing Waveform ................................................................................................... 29

Figure 5. TX_ON State During Transmission ................................................................................. 32

Figure 6. AirPrime HL7648 Mechanical Drawing ........................................................................... 33

Figure 7. AirPrime HL7648 Dimensions Drawing ........................................................................... 34

Figure 8. PWR_ON_N Sequence with VGPIO Information ............................................................ 35

Figure 9. Power OFF Sequence for PWR_ON_N, VGPIO ............................................................. 35

Figure 10. Voltage Limiter Example ................................................................................................. 37

Figure 11. EMC and ESD Components Close to the SIM ................................................................ 37

Figure 12. ESD Protection for USB .................................................................................................. 38

AirPrime HL7648 Architecture Overview ......................................................................... 12

4119069 Rev 3.1 October 27, 2016 7

List of Tables

Table 1.

Table 2. AirPrime HL7648 Features .............................................................................................. 11

Table 3. ESD Specifications .......................................................................................................... 14

Table 4. AirPrime HL7648 Environmental Specifications .............................................................. 14

Table 5. Regulation Compliance ................................................................................................... 15

Table 6. Pad Definition .................................................................................................................. 16

Table 7. Power Supply .................................................................................................................. 21

Table 8. Current Consumption ...................................................................................................... 21

Table 9. Current Consumption per Power Supply ......................................................................... 22

Table 10. VGPIO Electrical Characteristics ..................................................................................... 22

Table 11. BAT_RTC Electrical Characteristics................................................................................ 22

Table 12. UIM1 Pad Description ..................................................................................................... 23

Table 13. Electrical Characteristics of UIM1 ................................................................................... 23

Table 14. USB Pad Description ....................................................................................................... 24

Table 15. Digital I/O Electrical Characteristics ................................................................................ 24

Table 16. GPIO Pad Description ..................................................................................................... 25

Table 17. UART1 Pad Description .................................................................................................. 26

Supported Bands/Connectivity ........................................................................................ 10

Table 18. PWR_ON_N Electrical Characteristics ........................................................................... 26

Table 19. RESET_IN_N Electrical Characteristics .......................................................................... 27

Table 20. ADC Interface Pad Description ....................................................................................... 27

Table 21. ADC Electrical Characteristics ........................................................................................ 27

Table 22. Clock Interface Pad Description ...................................................................................... 28

Table 23. PCM Interface Pad Description ....................................................................................... 29

Table 24. PCM Electrical Characteristics ........................................................................................ 29

Table 25. Trace Debug Pad Description ......................................................................................... 30

Table 26. JTAG Pad Description ..................................................................................................... 30

Table 27. RF Main Connection ........................................................................................................ 31

Table 28. RF Diversity Connection .................................................................................................. 31

Table 29. Conducted RX Sensitivity (dBm) ..................................................................................... 31

Table 30. TX_ON Indicator Pad Description ................................................................................... 32

Table 31. TX_ON Characteristics .................................................................................................... 32

Table 32. Standards Conformity ...................................................................................................... 39

Table 33. Life Stress Test................................................................................................................ 39

Table 34. Environmental Resistance Stress Tests ......................................................................... 40

Table 35. Corrosive Resistance Stress Tests ................................................................................. 40

Table 36. Thermal Resistance Cycle Stress Tests ......................................................................... 41

Table 37. Mechanical Resistance Stress Tests .............................................................................. 42

4119069 Rev 3.1 October 27, 2016 8

Product Technical Specification

Table 38. Handling Resistance Stress Tests .................................................................................. 43

Table 39. Ordering Information ....................................................................................................... 46

4119069 Rev 3.1 October 27, 2016 9

1. Introduction

RF Band

Maximum Outpu t Power

LTE B2

1850 to 1910 MHz

1930 to 1990 MHz

23dBm ± 2dBm

LTE B4

1710 to 1755 MHz

2110 to 2155 MHz

23dBm ± 2dBm

LTE B12

699 to 716 MHz

729 to 746 MHz

23dBm ± 2dBm

This document is the Product Technical Specification for the AirPrime HL7648 Embedded Module. It
defines the high level product features and illustrates the interfaces for these features. This document
is intended to cover the hardware aspects of the product, including electrical and mechanical.

The AirPrime HL7648 belongs to the AirPrime HL Series from Essential Connectivity Module family.
These are industrial grade Embedded Wireless Modules that provides LTE category 1 data
connectivity on LTE networks (as listed in Table 1 Supported Bands/Connectivity).

The HL7648 supports a large variety of interfaces such as USB 2.0, UART and GPIOs to provide
customers with the highest level of flexibility in implementing high-end solutions.

Table 1. Supported Bands/Connectivity

Trans mit B and (Tx) Rece ive Band (Rx )

1.1. Common Flexible Form Factor (CF3)

The AirPrime HL7648 belongs to the Common Flexible Form Factor (CF3) family of modules. This
family consists of a series of WWAN modules that share the same mechanical dimensions (same
width and length with varying thicknesses) and footprint. The CF
solution to a series of problems faced commonly in the WWAN module space as it:

 Accommodates LTE radio technology and band groupings

 Supports bit-pipe (Essential Module Series) and value add (Smart Module Series) solutions

 Offers electrical and functional compatibility

 Provides Direct Mount as well as Socketability depending on customer needs

3

form factor provides a unique

1.2. Physical Dimensions

AirPrime HL7648 modules are compact, robust, fully shielded modules with the following dimensions:

 Length: 23 mm

 Width: 22 mm

 Thickness: 2.5 mm

 Weight: 3.5 g

Note: Dimensions specified above are typical values.

4119069 Rev 3.1 October 27, 2016 10

Product Technical Specification

Introduction

Featu re

Descr iption

Physical

 Small form factor (146-pad solderable LGA pad) – 23mm x 22mm x 2.5mm

(nominal)

 Complete body shielding
 RF connection pads (RF main interface)
 Baseband signals connection

Electrical

Single or double supply voltage (VBATT and VBATT_PA) – 3.2V – 4.5V

RF

Triple-band, LTE 1900MHz (B2), 1700MHz (B4), 700 MHz (B12) with MFBI

SIM interface

 Dual SIM Single Standby (DSSS)
 1.8V/3V support
 SIM extraction / hot plug detection
 SIM/USIM support
 Conforms with ETSI UICC Specifications.
 Supports SIM application tool kit with proactive SIM commands

Application interface

 NDIS NIC interface support (Windows 7, Windows 8, Linux)
 MBIM support
 Multiple non-multiplexed USB channel support
 Dial-up networking
 USB selective suspend to maximize power savings
 CMUX multiplexing over UART
 AT command interface – 3GPP 27.007 standard, plus proprietary extended

AT commands

Protocol Stack

Single mode LTE operation:

 LTE FDD, bandwidth 1.4-20 MHz
 System Release: 3GPP Rel. 9
 Category 1 (up to 10 Mbit/s in downlink, 5 Mbit/s in uplink)
 Max modulation 64 QAM DL, 16 QAM UL
 Intra-frequency and inter-frequency mobility
 SON ANR
 Public Warning System PWS

SMS

 SMS over SGs
 SMS MO and MT
 SMS saving to SIM card or ME storage
 SMS reading from SIM card or ME storage
 SMS sorting
 SMS concatenation
 SMS Status Report
 SMS replacement support
 SMS storing rules (support of AT+CNMI, AT+CNMA)

Voice over LTE

 Basic VoLTE call (MO / MT)
 Dialing & DTMF
 Basic Supplementary Services

1.3. General Features

The table below summarizes the AirPrime HL7648 features.

Table 2. AirPrime HL7648 Features

4119069 Rev 3.1 October 27, 2016 11

Product Technical Specification

Introduction

Featu re

Descr iption

Connectivity

 Multiple (up to 20) cellular packet data profiles
 Sleep mode for minimum idle power draw
 Mobile-originated PDP context activation / deactivation
 Support QoS profile

 Release 97 – Precedence Class, Reliability Class, Delay Class, Peak

Throughput, Mean Throughput

 Release 99 QoS negotiation – Background, Interactive, and Streaming

 Static and Dynamic IP address. The network may assign a fixed IP address

or dynamically assign one using DHCP (Dynamic Host Configuration
Protocol).

 Supports PAP and CHAP authentication protocols
 PDP context type (IPv4, IPv6, IPv4v6). IP Packet Data Protocol context
 RFC1144 TCP/IP header compression

Environmental

Operating temperature ranges (industrial grade):

 Class A: -30°C to +70°C
 Class B: -40°C to +85°C

RTC

Real Time Clock (RTC) with calendar

LGA-146

LGA-146

VBATT

GND

VGPIO

BAT_RTC

GPIO x 12

8-pin UART

5-pin Debug

JTAG

26M_CLK

32K_CLK

SIM 1

RESET_IN_N

POWER_ON_N

USB

ADC x 2

PCM

TX_ON

Stack Up MCP

(1G/512)

MCU DSP

PMU RF

Analog Baseband

Peripherals

PA

PA

PA

Dup B2

Dup B4

Dup
B12

ASM

ASM

Filter

Filter

Filter

Baseband

32.768 KHz 26 MHz

RF MAIN

RF DIV

1.4. Architecture

The figure below presents an overview of the AirPrime HL7648 internal architecture and external
interfaces.

Figure 1. AirPrime HL7648 Architecture Overview

4119069 Rev 3.1 October 27, 2016 12

Product Technical Specification

Introduction

1.5. Interfaces

The AirPrime HL7648 module provides the following interfaces and peripheral connectivity:

 1x - VGPIO

 1x - Backup Battery Interface

 1x - 1.8V/3V SIM

 1x - USB 2.0

 12x - GPIOs (2 of which have multiplexes)

 1x - 8-wire UART

 1x - Active Low POWER ON

 1x - Active Low RESET

 2x - ADC

 2x - System Clock Out

 1x - Digital Audio (PCM)

 1x - Debug Interface

 1x - JTAG Interface

 1x - Main Antenna

 1x - RX Diversity

 1x - TX Burst Indicator

1.6. Connection Interface

The AirPrime HL7648 module is an LGA form factor device. All electrical and mechanical connections
are made through the 146 Land Grid Array (LGA) pads on the bottom side of the PCB.

Figure 2. AirPrime HL7648 Mechanical Overview (Top View and Bottom View)

The 146 pads have the following distribution:

 66 inner signal pads, 1x0.5mm, pitch 0.8mm

 1 reserved test point (do not connect), 1.0mm diameter

 7 test point (JTAG), 0.8mm diameter, 1.20mm pitch

 64 inner ground pads, 1.0x1.0mm, pitch 1.825mm/1.475mm

 4 inner corner ground pads, 1x1mm

 4 outer corner ground pads, 1x0.9mm

4119069 Rev 3.1 October 27, 2016 13

Product Technical Specification

Introduction

Categ ory

Conne ctio n

Speci fica tion

Operational

RF ports

IEC-61000-4-2 — Level (Electrostatic Discharge Immunity Test)

Non-operational

Host connector
interface

Unless otherwise specified:

 JESD22-A114 +/- 1kV Human Body Model
 JESD22-A115 +/- 200V Machine Model
 JESD22-C101C +/- 250V Charged Device Model

Signals
SIM connector

Adding ESD protection is highly recommended at the point where
the USIM contacts are exposed, and for any other signals that
would be subjected to ESD by the user.

Other host signals

Condi tions

Range

Operating Class A

-30°C to +70°C

Operating Class B

-40°C to +85°C

Storage

-40°C to +85°C

1.7. ESD

Refer to the following table for ESD Specifications.

Table 3. ESD Specifications

1.8. Environmental and Certifications

1.8.1. Environmental Specifications

The environmental specification for both operating and storage conditions are defined in the table
below.

Table 4. AirPrime HL7648 Environmental Specifications

Class A is defined as the operating temperature ranges that the device:

 Shall exhibit normal function during and after environmental exposure.

 Shall meet the minimum requirements of 3GPP or appropriate wireless standards.

Class B is defined as the operating temperature ranges that the device:

 Shall remain fully functional during and after environmental exposure

 Shall exhibit the ability to establish an SMS or DATA call (emergency call) at all times even

when one or more environmental constraint exceeds the specified tolerance.

 Unless otherwise stated, full performance should return to normal after the excessive

constraint(s) have been removed.

4119069 Rev 3.1 October 27, 2016 14

Product Technical Specification

Introduction

Docum ent

Current Vers ion

Descr iption

NAPRD.03

V5.22 or later

North American Program Reference Document

FCC Part 27

NA

Federal Communications Commission

This electronic product is subject to the EU Directive 2012/19/EU for Waste Electrical
and Electronic Equipment (WEEE). As such, this product must not be disposed of at a
municipal waste collection point. Please refer to local regulations for directions on how
to dispose of this product in an environmental friendly manner.

1.8.2. Regulatory

The AirPrime HL7648 is compliant with FCC regulations.

FCC compliance will be reflected on the AirPrime HL7648 label.

Table 5. Regulation Compliance

1.8.3. RoHS Directive Compliant

The AirPrime HL7648 module is compliant with RoHS Directive 2011/65/EU which sets limits for the

use of certain restricted hazardous substances. This directive states that “from 1st July 2006, new

electrical and electronic equipment put on the market does not contain lead, mercury, cadmium,
hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE)”.

1.8.4. Disposing of the Product

1.9. References

[1] AirPrime HL Series Customer Process Guidelines

Reference Number: 4114330

[2] AirPrime HL76xx AT Commands Interface Guide

Reference Number: 4118395

[3] AirPrime HL Series Development Kit User Guide

Reference Number: 4114877

4119069 Rev 3.1 October 27, 2016 15

2. Pad Definition

Pad #

Signa l Name

Funct ion

I/O

Acti ve
Low/High

Power Supply
Domai n

Recom mend atio n
for Unused Pads

Type

1

GPIO1

General purpose input/output

I/O 1.8V

Left Open

Extension

2

UART1_RI /
TRACE_DATA3

UART1 Ring indicator / Trace data 3

O 1.8V

Connect to test point

Core
3

UART1_RTS

UART1 Request to send

I L 1.8V

Connect to test point

Core

4

UART1_CTS

UART1 Clear to send

O L 1.8V

Connect to test point

Core

5

UART1_TX

UART1 Transmit data

I 1.8V

Connect to test point

Core

6

UART1_RX

UART1 Receive data

O 1.8V

Connect to test point

Core

7

UART1_DTR

UART1 Data terminal ready

I L 1.8V

Connect to test point

Core

8

UART1_DCD /
TRACE_DATA1

UART1 Data carrier detect / Trace data 1

O L 1.8V

Connect to test point

Core

9

UART1_DSR /
TRACE_DATA0

UART1 Data set ready / Trace data 0

O L 1.8V

Connect to test point

Core

10

GPIO2 /
TRACE_DATA2

General purpose input/output / Trace data 2

I/O 1.8V

Connect to test point

Core

AirPrime HL7648 pads are divided into 2 functional categories.

 Core functions and associated pads cover all the mandatory features for M2M connectivity and will be available by default across all CF3 family of

modules. These Core functions are always available and always at the same physical pad locations. A customer platform using only these functions
and associated pads is guaranteed to be forward and/or backward compatible with the next generation of CF3 modules.

 Extension functions and associated pads bring additional capabilities to the customer. Whenever an Extension function is available on a module, it

is always at the same pad location.

Other pads marked as “not connected” or “reserved” should not be used.

Table 6. Pad Definition

4119069 Rev 3.1 October 27, 2016 16

Product Technical Specification

Pad Definition

Pad #

Signa l Name

Funct ion

I/O

Acti ve
Low/High

Power Supply
Domai n

Recom mend atio n
for Unused Pads

Type

11

RESET_IN_N

Input reset signal

I L 1.8V

Left Open

Core

12

USB_D­USB Data Negative (Low / Full Speed)

I/O

3.3V

Connect to test point

Extension
USB Data Negative (High Speed)

0.38V

13

USB_D+
USB Data Positive (Low / Full Speed)

I/O

3.3V

Connect to test point

Extension
USB Data Positive (High Speed)

0.38V

14

NC

Not Connected (Reserved for future use)

Left Open

Not connected

15

NC

Not Connected (Reserved for future use)

Left Open

Not connected

16

USB_VBUS

USB VBUS

I 5V

Connect to test point

Extension

17

NC

Not Connected (Reserved for future use)

Left Open

Not connected

18

NC

Not Connected (Reserved for future use)

Left Open

Not connected

19

NC

Not Connected (Reserved for future use)

Left Open

Not connected

20

NC

Not Connected (Reserved for future use)

Left Open

Not connected

21

BAT_RTC

Power supply for RTC backup

I/O 1.8V

Left Open

Extension

22

26M_CLKOUT

26MHz System Clock Output

O 1.8V

Left Open

Extension

23

32K_CLKOUT

32.768kHz System Clock Output

O 1.8V

Left Open

Extension

24

ADC1

Analog to digital converter

I 1.2V

Left Open

Extension

25

ADC0

Analog to digital converter

I 1.2V

Left Open

Extension

26

UIM1_VCC

1.8V/3V SIM1 Power supply

O 1.8V/3V

Mandatory connection

Core

27

UIM1_CLK

1.8V/3V SIM1 Clock

O 1.8V/3V

Mandatory connection

Core

28

UIM1_DATA

1.8V/3V SIM1 Data

I/O 1.8V/3V

Mandatory connection

Core

29

UIM1_RESET

1.8V/3V SIM1 Reset

O L 1.8V/3V

Mandatory connection

Core

30

GND

Ground

0V 0V

Mandatory connection

Extension

31

RF_DIV

RF Input - Diversity

Mandatory connection

Extension

32

GND

Ground

0V 0V

Mandatory connection

Extension

33

PCM_OUT

PCM data out

O 1.8V

Left Open

Extension

4119069 Rev 3.1 October 27, 2016 17

Product Technical Specification

Pad Definition

Pad #

Signa l Name

Funct ion

I/O

Acti ve
Low/High

Power Supply
Domai n

Recom mend atio n
for Unused Pads

Type

34

PCM_IN

PCM data in

I 1.8V

Left Open

Extension

35

PCM_SYNC

PCM sync out

I/O 1.8V

Left Open

Extension

36

PCM_CLK

PCM clock

I/O 1.8V

Left Open

Extension

37

GND

Ground

0V 0V

Mandatory connection

Core

38

NC

Not Connected (Reserved for future use)

Left Open

Not connected

39

GND

Ground

0V 0V

Mandatory connection

Core

40

GPIO7

General purpose input/output

I/O 1.8V

Left Open

Core

41

GPIO8 / TRACE_CLK

General purpose input/output / Trace clock

I/O 1.8V

Connect to test point

Core

42

NC

Not Connected (Reserved for future use)

Left Open

Not connected

43

NC

Not Connected (Reserved for future use)

Left Open

Not connected

44

GPIO13

General purpose input/output

O 1.8V

Left Open

Extension

45

VGPIO

GPIO voltage output

O 1.8V

Left Open

Core

46

GPIO6

General purpose input/output

I/O 1.8V

Left Open

Core

47

TP1

Not Connected (Reserved for future use)

Left Open

Not connected

48

GND

Ground

0V 0V

Mandatory connection

Core

49

RF_MAIN

RF Input/output

Mandatory connection

Core

50

GND

Ground

0V 0V

Mandatory connection

Core

51

GPIO14

General purpose input/output

I 1.8V

Left Open

Extension

52

GPIO10

General purpose input/output

I/O 1.8V

Left Open

Extension

53

GPIO11

General purpose input/output

I/O 1.8V

Left Open

Extension

54

GPIO15

General purpose input/output

I/O 1.8V

Left Open

Extension

55

NC

Not Connected (Reserved for future use)

Left Open

Not connected

56

NC

Not Connected (Reserved for future use)

Left Open

Not connected

57

NC

Not Connected (Reserved for future use)

Left Open

Not connected

58

NC

Not Connected (Reserved for future use)

Left Open

Not connected

4119069 Rev 3.1 October 27, 2016 18

Product Technical Specification

Pad Definition

Pad #

Signa l Name

Funct ion

I/O

Acti ve
Low/High

Power Supply
Domai n

Recom mend atio n
for Unused Pads

Type

59

PWR_ON_N

Active Low Power On control signal

I L 1.8V

Mandatory connection

Core

60

TX_ON

TX indicator

O 2.3V

Left Open

Extension

61

VBATT_PA

Power supply (refer to section 3.1 Power
Supply for more information)

I

3.2V (min)

3.7V (typ)

4.5V (max)

Mandatory connection

Core

62

VBATT_PA

Power supply (refer to section 3.1 Power
Supply for more information)

I

3.2V (min)

3.7V (typ)

4.5V (max)

Mandatory connection

Core

63

VBATT

Power supply

I

3.2V (min)

3.7V (typ)

4.5V (max)

Mandatory connection

Core
64

UIM1_DET

UIM1 Detection

I/O H 1.8V

Left Open

Core

65

GPIO4

General purpose input/output

I/O H 1.8V

Left Open

Extension

66

GPIO5

General purpose input/output

I/O 1.8V

Left Open

Extension

67-70

GND

Ground

GND

0V Core

71 ­166

Note: These pads are not available on the AirPrime HL7648 module.

167 ­234

GND

Ground

GND

0V Core
236

JTAG_RESET

JTAG RESET

I L 1.8V

Left Open

Extension

237

JTAG_TCK

JTAG Test Clock

I 1.8V

Left Open

Extension

238

JTAG_TDO

JTAG Test Data Output

O 1.8V

Left Open

Extension

239

JTAG_TMS

JTAG Test Mode Select

I 1.8V

Left Open

Extension

240

JTAG_TRST

JTAG Test Reset

I L 1.8V

Left Open

Extension

241

JTAG_TDI

JTAG Test Data Input

I 1.8V

Left Open

Extension

242

JTAG_RTCK

JTAG Returned Test Clock

O 1.8V

Left Open

Extension

4119069 Rev 3.1 October 27, 2016 19

Product Technical Specification

Pad Definition

168

169

167

170

181716151413121110

987

6

432

1

5

66
65
64
63
62
61
60
59

343536

3738383940

41424243434445

46

484950

51

47

47

58

58

57

57

56

56

55

55

53
52

54

70

67

19
20
21
22
23
24
25
26

27
28
29
30

32
33

31

69

68

192 193 194 195 196 197 198 171

191 214 215 216 217 218 199 172

190 213 228 229 230 219 200 173

189 212 227 234 231 220 201 174

188 211 226 233 232 221 202 175

187 210 225 224 223 222 203 176

186 209 208 207 206 205 204 177

185 184 183 182 181 180 179 178

236237238239240241242

GND

GPIO5

GPIO4
UIM1_DET
VBATT
VBATT_PA
VBATT_PA
TX_ON
PWR_ON_N
NC
NC
NC
NC

GPIO15
GPIO11
GPIO10

GND

GND

NC
NC

BAT_RTC

26M_CLKOUT

32K_CLKOUT

ADC1
ADC0

UIM1_VCC

UIM1_CLK

UIM1_DATA

UIM1_RESET

GND

RF_DIV

GND

PCM_OUT

GND

PCM_IN

PCM_SYNC

PCM_CLK

GNDNCGND

GPIO7

GPIO8 / TRACE_CLK

NC

NC

GPIO13

VGPIO

GPIO6

TP1

GND

RF_MAIN

GND

GPIO14

NCNCUSB_VBUSNCNC

USB_D+

USB_D-

RESET_IN_N

GPIO2 / TRACE_DATA2

UART1_DSR / TRACE_DATA0

UART1_DCD / TRACE_DATA1

UART1_DTR

UART1_RX

UART1_TX

UART1_CTS

UART1_RTS

UART1_RI / TRACE_DATA3

GPIO1

JTAG_RTCK

JTAG_TDI

JTAG_TRST

JTAG_TMS

JTAG_TDO

JTAG_TCK

JTAG_RESET

Core pin

Extension pin

236237238239240241242

2.1. Pad Configuration (Top View, Through Module)

Figure 3. Pad Configuration

4119069 Rev 3.1 October 27, 2016 20

3. Detailed Interface Specifications

Suppl y

Minim um

Typical

Maximum

VBATT voltage (V)

3.21

3.7

4.5

VBATT_PA voltage (V) Full Specification

3.21

3.7

4.5

VBATT_PA voltage (V) Extended Range2

2.8

3.7

4.5

Param eter

Minim um

Typical

Maximum

Unit

Off mode

-

160 - µA

Sleep mode – LTE
DRX = 1.28s
USB = suspended

Band 2

-

1.45

-

mA

Band 4

-

1.45

-

mA

Band 12

-

1.45

-

mA

LTE in communication
mode (TX Max)
Band 2

580

630

720

mA

Band 4

610

670

790

mA

Band 12

580

600

620

mA

Note: If not specified, all electrical values are given for VBATT=3.7V and an operating temperature of

25°C.

For standard applications, VBATT and VBATT_PA must be tied externally to the same power
supply. For some specific applications, AirPrime HL7648 module supports separate VBATT and
VBATT_PA connection if requirements below are fulfilled.

3.1. Power Supply

The AirPrime HL7648 module is supplied through the VBATT signal with the following characteristics.

Table 7. Power Supply

1 This value has to be guaranteed during the burst.

2 VBATT_PA of below 3.2V cause degraded RF performance and may deviate 3GPP

Note: Load capacitance for VBATT is around 32µF ± 20% embedded inside the module.

Load capacitance for VBATT_PA is around 10µF ± 20% embedded inside the module.

3.2. Current Consumption

The following table lists the current consumption of the AirPrime HL7648 at different conditions.

Note: Typical values are defined for VBATT/VBATT_PA at 3.7V and 25°C, for 50Ω impedance at all RF

ports. Maximum values are provided for VSWR3:1 with worst conditions among supported ranges
of voltages and temperature.

Table 8. Current Consumption

4119069 Rev 3.1 October 27, 2016 21

Product Technical Specification

Detailed Interface Specifications

Param eter (at no mina l voltag e, 3.7 V)

Typical

Unit

VBATT

LTE in communication mode (TX Max)
USB = disconnected

Band 2

215

mA

Band 4

205

mA

Band 12

210

mA

VBATT_PA

LTE in communication mode (TX Max)
USB = disconnected

Band 2

415

mA

Band 4

465

mA

Band 12

390

mA

Param eter

Minimum

Typical

Maximu m

Remar ks

Voltage level (V)

1.7

1.8

1.9

Both active mode and sleep mode

Current capability
Active Mode (mA)

- - 50

Power management support up to 50mA
output in Active mode

Current capability
Sleep Mode (mA)

- - 3

Power management support up to 3mA
output in Sleep mode

Rise Time (ms)

- - 1.5

Start-Up time from 0V

Param eter

Minim um

Typical

Maximum

Unit

Input voltage

-

1.8 - V

Input current consumption

-

2.5 - µA

Output voltage

-5%

1.8

+5%

V

Max charging current (@VBATT=3.7V)

-

25 - mA

Table 9. Current Consumption per Power Supply

3.3. VGPIO

The VGPIO output can be used to:

 Pull-up signals such as I/Os

 Supply the digital transistors driving LEDs

The VGPIO output is available when the AirPrime HL7648 module is switched ON.

Table 10. VGPIO Electrical Characteristics

3.4. BAT_RTC

The AirPrime HL7648 module provides an input/output to connect a Real Time Clock power supply.

This pad is used as a back-up power supply for the internal Real Time Clock. The RTC is supported
when VBATT is available but a back-up power supply is needed to save date and hour when VBATT
is switched off.

If VBATT is available, the back-up battery can be charged by the internal 1.8V power supply regulator.

Table 11. BAT_RTC Electrical Characteristics

4119069 Rev 3.1 October 27, 2016 22

Product Technical Specification

Detailed Interface Specifications

Pad #

Signa l Name

Descr iption

26

UIM1_VCC

1.8V/3V SIM1 Power supply

27

UIM1_CLK

1.8V/3V SIM1 Clock

28

UIM1_DATA

1.8V/3V SIM1 Data

29

UIM1_RESET

1.8V/3V SIM1 Reset

64

UIM1_DET

UIM1 Detection

Param eter

Minimum

Typical

Maximu m

Remar ks

UIM1 Interface Voltage (V)
(VCC, CLK, IO, RST)

-

2.9

-

The appropriate output voltage is auto
detected and selected by software.

-

1.80

-

UIM1 Detect

-

1.80

-

High active

UIM1_VCC Current (mA)

- - 10

Max output current in sleep mode = 3
mA

UIM1_VCC Line Regulation
(mV/V)

- - 50

At Iout_Max

UIM1_VCC Power-up Setting
Time (µs) from power down

-

10 -

3.5. SIM Interface

The AirPrime HL7648 has one physical SIM interface, UIM1, which has optional support for dual SIM
application with an external SIM switch.

It allows control of a 1.8V/3V SIM and is fully compliant with GSM 11.11 recommendations concerning
SIM functions.

The five signals used by UIM1 are as follows:

 UIM1_VCC: power supply

 UIM1_CLK: clock

 UIM1_DATA: I/O port

 UIM1_RESET: reset

 UIM1_DET: SIM detection

Table 12. UIM1 Pad Description

Table 13. Electrical Characteristics of UIM1

3.5.1. UIM1_DET

UIM1_DET is used to detect and notify the application about the insertion and removal of a SIM
device in the SIM socket connected to the SIM interface. When a SIM is inserted, the state of
UIM1_DET transitions from logic 0 to logic 1. Inversely, when a SIM is removed, the state of
UIM1_DET transitions from logic 1 to logic 0.

4119069 Rev 3.1 October 27, 2016 23

Product Technical Specification

Detailed Interface Specifications

Pad Num ber

Signa l Name

I/O

Funct ion

12

USB_D-

I/O

USB Data Negative

13

USB_D+

I/O

USB Data Positive

16

USB_VBUS

I

USB VBUS

Param eter

Symbol

Minimum

Typical

Maximu m

Remar ks

Input Current-High(µA)

IIH - -

240

Input Current-Low(µA)

IIL - -

240

Group 1
DC Output Current-High (mA)

IOH - - 6

DC Output Current-Low (mA)

IOL

-6 - -

Group 2
DC Output Current-High (mA)

IOH - - 1

DC Output Current-Low (mA)

IOL

-1 - -

Input Voltage-High(V)

VIH

1.19

-

2.10

Input Voltage-Low(V)

VIL

-0.20

-

0.38

Output Voltage-High(V)
VOH

1.35

- - IOH = -6mA

VOH

1.50

- - IOH = -0.1mA

Output Voltage-Low(V)
VOL - -

0.35

IOH = 6mA

VOL - -

0.2

IOH = 0.1mA

3.6. USB

The AirPrime HL7648 has one USB interface.

Table 14. USB Pad Description

Note: When the 5V USB supply is not available, connect USB_VBUS to VBATT to supply the USB

interface.

3.7. Electrical Information for Digital I/O

The AirPrime HL7648 supports two groups of digital interfaces with varying current drain limits. The
following list enumerates these interface groupings and the following table enumerates the electrical
characteristics of each digital interface.

 Group 1 (6mA current drain limit)

 GPIO2, GPIO4, GPIO6, GPIO8, GPIO10, GPIO11, GPIO13, GPIO14, GPIO15

 Group 2 (1mA current drain limit)

 GPIO1, GPIO5, GPIO7

 UART1

 JTAG

Table 15. Digital I/O Electrical Characteristics

4119069 Rev 3.1 October 27, 2016 24

Product Technical Specification

Detailed Interface Specifications

Pad N umbe r

Signa l Name

Multi plex

I/O

Power Supply Domain

1

GPIO1

I/O

1.8V

10

GPIO2

TRACE_DATA2

I/O

1.8V

40

GPIO7

I/O

1.8V

41

GPIO8

TRACE_CLK

I/O

1.8V

44

GPIO13

I/O

1.8V

46

GPIO6

I/O

1.8V

51

GPIO14

I/O

1.8V

52

GPIO10

I/O

1.8V

53

GPIO11

I/O

1.8V

54

GPIO15

I/O

1.8V

65

GPIO4

I/O

1.8V

66

GPIO5

I/O

1.8V

3.8. General Purpose Input/Output (GPIO)

The AirPrime HL7648 modules provide 12 GPIOs, 2 of which have multiplexes.

Table 16. GPIO Pad Description

3.9. Main Serial Link (UART1)

The main serial link (UART1) is used for communication between the AirPrime HL7648 module and a
PC or host processor. It consists of a flexible 8-wire serial interface that complies with RS-232
interface.

The supported baud rates of the UART1 are 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600,
115200, 230400, 460800, 500000, 750000, 921600, 1843200, 3000000 and 3250000 bit/s.

The signals used by UART1 are as follows:

 TX data (UART1_TX)

 RX data (UART1_RX)

 Request To Send (UART1_RTS)

 Clear To Send (UART1_CTS)

 Data Terminal Ready (UART1_DTR)

 Data Set Ready (UART1_DSR)

 Data Carrier Detect (UART1_DCD)

 Ring Indicator (UART1_RI)

Note: Signal names are according to PC view.

UART1 pad description is summarized in the table below.

4119069 Rev 3.1 October 27, 2016 25

Product Technical Specification

Detailed Interface Specifications

Pad #

Signa l Name*

I/O*

Descr iption

2

UART1_RI

O

Signal incoming calls (data only), SMS, etc.

3

UART1_RTS

I

Request to send

4

UART1_CTS

O

AirPrime HL7648 is ready to receive AT commands

5

UART1_TX

I

Transmit data

6

UART1_RX

O

Receive data

7

UART1_DTR

I (active low)

Prevents the AirPrime HL7648 from entering sleep mode,
switches between data mode and command mode, and
wakes the module up.

8

UART1_DCD

O

Signal data connection in progress

9

UART1_DSR

O

Signal UART interface is ON

Param eter

Minimum

Typical

Maximu m

Input Voltage-Low (V)

- 0.51

Input Voltage-High (V)

1.33

-

2.2

Power-up period (ms) from PWR_ON_N falling edge

2000

- - PWR_ON_N assertion time (ms)

25

Table 17. UART1 Pad Description

* According to PC view.

3.10. POWER-ON Signal (PWR_ON_N)

A low level signal has to be provided to switch the AirPrime HL7648 module ON.

It is internally connected to the permanent 1.8 V supply regulator inside the HL7648 via a pull-up
resistor. Once VBAT is supplied to the HL7648 module, this 1.8 V supply regulator will be enabled
and so the PWR_ON_N signal is by default at high level.

The PWR_ON_N signal’s characteristics are listed in the table below.

Table 18. PWR_ON_N Electrical Characteristics

Note: As PWR_ON_N is internally pulled up with 100kΩ, an open collector or open drain transistor must

be used for ignition.

VGPIO is an output from the module that can be used to check if the module is active.

 When VGPIO = 0 V, the module is OFF

 When VGPIO = 1.8 V, the module is ON (it can be in idle, communication or sleep mode)

Note: PWR_ON_N signal cannot be used to power the module off. To power the module off, use AT

command AT+CPWROFF.

4119069 Rev 3.1 October 27, 2016 26

Product Technical Specification

Detailed Interface Specifications

Param eter

Minimum

Typical

Maximu m

Input Voltage-Low (V)

- 0.51

Input Voltage-High (V)

1.33

-

2.2

Reset assertion time (ms)

20 - -

Power-up period (ms) from RESET_IN_N falling edge*

2000

-

-

Pad N umbe r

Signa l Name

I/O

Descr iption

24

ADC1

I

Analog to digital converter

25

ADC0

I

Analog to digital converter

Param eter

Minimum

Typical

Maximu m

Remar ks

ADC Resolution (bits)

-

10 -

Input Voltage Range (V)

0 - 1.2

General purpose input

Update rate per channel (kHz)

- - 125 Integral Nonlinearity (bits)

- - ±2

LSB

Offset Error (bits)

- - ±1

LSB

Gain

849

853

858

3.11. Reset Signal (RESET_IN_N)

To reset the module, a low level pulse must be sent on the RESET_IN_N pad for 20 ms. This action
will immediately restart the AirPrime HL7648 module with the PWR_ON_N signal at low level. (If the
PWR_ON_N signal is at high level, the module will be powered off.) As RESET_IN_N is internally
pulled up, an open collector or open drain transistor has to be used to control this signal.

The RESET_IN_N signal will reset the registers of the CPU and reset the RAM memory as well, for
the next power on.

Note: As RESET_IN_N is referenced to the VRTC (200 kΩ pull-up resistor to VRTC 1.8 V) an open

collector or open drain transistor has to be used to control this signal.

Table 19. RESET_IN_N Electrical Characteristics

* With the PWR_ON_N Signal at low level.

3.12. Analog to Digital Converter (ADCs)

Two Analog to Digital Converter input, ADC0 and ADC1, are provided by the AirPrime HL7648
module. These converter are 10-bit resolution ADCs ranging from 0 to 1.2V.

The following table describes the pad description of the ADC interface.

Table 20. ADC Interface Pad Description

Typically, the ADC input is used to monitor external voltage. This is very useful for monitoring an

application’s voltage and can be used as an indicator to safely power the application OFF in case of

overvoltage.

Table 21. ADC Electrical Characteristics

4119069 Rev 3.1 October 27, 2016 27

Product Technical Specification

Detailed Interface Specifications

Param eter

Minimum

Typical

Maximu m

Remar ks

Input Resistance (MΩ)

1 - - Input Capacitance (pF)

- 1 -

Pad Num ber

Signa l Name

I/O

I/O T ype

Descr iption

22

26M_CLKOUT

O

1.8V

26MHz Digital Clock output

23

32K_CLKOUT

O

1.8V

32.768kHz Digital Clock output

3.13. Clock Interface

The AirPrime HL7648 modules support two digital clock interfaces.

The following table describes the pad description of the clock out interfaces.

Table 22. Clock Interface Pad Description

Enabling or disabling the clock out feature can be done using AT commands. For more information
about AT commands, refer to document [2] AirPrime HL76xx AT Commands Interface Guide.

3.14. Digital Audio (PCM)

The Digital Audio (PCM) Interface allows connectivity with standard audio peripherals. It can be used,
for example, to connect an external audio codec.

The programmability of this interface allows addressing a large range of audio peripherals.

The signals used by the digital audio interface are as follows:

 PCM_SYNC: The frame synchronization signal delivers an 8 kHz frequency pulse that

synchronizes the frame data in and the frame data out.

 PCM_CLK: The frame bit clock signal controls data transfer with the audio peripheral.

 PCM_OUT: The frame “data out” relies on the selected configuration mode.

 PCM_IN: The frame “data in” relies on the selected configuration mode.

The PCM interface is a high speed full duplex interface that can be used to send and receive digital
audio data to external audio ICs. The PCM interface also features the following:

 PCM master or slave

 16 bits data word length, linear mode

 MSB first

 Configurable PCM bit clock rate on 256kHz, 384kHz or 512kHz

 Long frame sync

The following table describes the pad description of the PCM interface.

4119069 Rev 3.1 October 27, 2016 28

Product Technical Specification

Detailed Interface Specifications

Pad N umbe r

Signa l Name

I/O

Descr iption

33

PCM_OUT

O

PCM data out

34

PCM_IN

I

PCM data in

35

PCM_SYNC

I/O

PCM sync out

36

PCM_CLK

I/O

PCM clock

Signa l

Descr iption

Minim um

Typical

Maximum

Unit

Tsync_low +
Tsync_high

PCM-SYNC period

125

µs
Tsync_low

PCM-SYNC low time

62.5

µs

Tsync_high

PCM-SYNC high time

62.5

µs

TCLK-cycle

PCM-CLK period (T)

1.95

2.6

3.9

µs

TIN-setup

PCM-IN setup time

59.6

ns

TIN-hold

PCM-IN hold time

12

ns

TOUT-delay

PCM-OUT delay time

21.6

ns

TSYNC-delay

PCM-SYNC output delay

-24

31.2

ns

Table 23. PCM Interface Pad Description

Refer to the following table for the electrical characteristics of the digital audio interface.

Table 24. PCM Electrical Characteristics

The following figure shows the PCM timing waveform.

Figure 4. PCM Timing Waveform

4119069 Rev 3.1 October 27, 2016 29

Product Technical Specification

Detailed Interface Specifications

Pad Num ber

Signa l Na me

Funct ion

2

TRACE_DATA3

Trace data 3

8

TRACE_DATA1

Trace data 1

9

TRACE_DATA0

Trace data 0

10

TRACE_DATA2

Trace data 2

41

TRACE_CLK

Trace clock

Pad Num ber

Signa l Na me

Funct ion

236

JTAG_RESET

JTAG RESET

237

JTAG_TCK

JTAG Test Clock

238

JTAG_TDO

JTAG Test Data Output

239

JTAG_TMS

JTAG Test Mode Select

240

JTAG_TRST

JTAG Test Reset

241

JTAG_TDI

JTAG Test Data Input

242

JTAG_RTCK

JTAG Returned Test Clock

3.15. Debug Interfaces

The AirPrime HL7648 module provides 2 interfaces for a powerful debug system.

3.15.1. Trace Debug

The AirPrime HL7648 module provides a Trace Debug interface, providing real-time instruction and
data trace of the modem core.

Table 25. Trace Debug Pad Description

Note: It is strongly recommended to provide access to this interface through Test Points.

3.15.2. JTAG

The JTAG interface provides debug access to the core of the HL7648. These JTAG signals are
accessible through solder-able test points.

Table 26. JTAG Pad Description

Note: It is recommended to provide access through Test Points to this interface the JTAG pads (for

Failure Analysis debugging). All signals listed in table above shall be outputs on the customer board
to allow JTAG debugging.

4119069 Rev 3.1 October 27, 2016 30

Product Technical Specification

Detailed Interface Specifications

Pad Num ber

RF Signal

Imped ance

VSWR Rx (max )

VSWR Tx (max)

49

RF_MAIN

50 Ω

1.5:1

1.5:1

Pad Num ber

RF Signal

Imped ance

VSWR Rx (max )

VSWR Tx (max)

31

RF_DIV

50 Ω

1.5:1

---

Frequ ency Ba nd

Prima r y (T yp ical )

Secon dary (T ypic al)

SIMO (Typica l)

LTE B2

Full RB; BW: 20 MHz*

-91

-91

-93

LTE B4

Full RB; BW: 20 MHz*

-93

-93

-95

LTE B12

Full RB; BW: 10 MHz*

-93

-93

-95

3.16. RF Interface

The RF interface of the HL7648 module allows the transmission of RF signals. This interface has a
50Ω nominal impedance.

3.16.1. RF Connection

A 50Ω stripline can be used to connect to standard RF connectors such as SMA, UFL, etc. for
antenna connection.

Table 27. RF Main Connection

Table 28. RF Diversity Connection

3.16.2. RF Performances

RF performances are compliant with 3GPP recommendation TS 36.101.

Table 29. Conducted RX Sensitivity (dBm)

* Sensitivity values scale with bandwidth: x_MHz_Sensitivity = 10 MHz_Sensitivity – 10*log (10 MHz/x_MHz)

4119069 Rev 3.1 October 27, 2016 31

Product Technical Specification

Detailed Interface Specifications

Pad N umbe r

Signa l Na me

Funct ion

I/O T ype

Power Supp ly Dom ain

60

TX_ON

TX indicator

O

2.3V

Param eter

Minim um

Typical

Maximum

T

advance

30µs

T

delay

10µs

TX_ON

VBATT_PA

T

duration

T

advance

T

delay

Voltage drop

3.16.3. TX_ON Indicator (TX_ON)

The AirPrime HL7648 provides a signal, TX_ON, for TX indication. The TX_ON is a 2.3V signal and
its status signal depends on the module transmitter state.

Refer to the following table for the status of the TX_ON signal depending on the embedded module’s

state.

Table 30. TX_ON Indicator Pad Description

Table 31. TX_ON Characteristics

Figure 5. TX_ON State During Transmission

4119069 Rev 3.1 October 27, 2016 32

4. Mechanical Drawings

Figure 6. AirPrime HL7648 Mechanical Drawing

4119069 Rev 3.1 October 27, 2016 33

Product Technical Specification

Mechanical Drawings

Figure 7. AirPrime HL7648 Dimensions Drawing

4119069 Rev 3.1 October 27, 2016 34

5. Design Guidelines

< 25 ms

Module is OFF

VGPIO

2000 ms

Module is ON

PWR_ON_N

Signal level depends on
Hardware Flow Control settings

7 seconds

UART1_CTS

USB Enumeration time

(7 seconds)

USB_D+

Module is ready to receive
AT commands via UART1

Module communicates
with host via USB

2 seconds

AT+CPWROFF

Module is ON

PWR_ON_N

Internal pull-up to

1V8

Module is OFF

VGPIO

5.1. Power-Up Sequence

Apply a LOW level logic to the PWR_ON_N pad (pad 59); within approximately 25 ms, VGPIO will
appear to be at 1.8 V. Either UART1 or the USB interface could be used to send AT commands. The
AT command interface is available in about 7 seconds after PWR_ON_N for either UART or USB.

When using UART, the AT command interface is available after the transition of UART1_CTS from
high to low level.

When using a USB connection, the HL7648 will start communicating with the host after USB
enumeration. The time when AT commands can be sent will depend on the initialization time on the
USB host.

Figure 8. PWR_ON_N Sequence with VGPIO Information

Note: As PWR_ON_N is internally pulled up with 100kΩ, an open collector or open drain transistor must

be used for ignition.

The PWR_ON_N pad has the minimum assertion time requirement of 25 ms, with LOW active. Once
the valid power on trigger is detected, the PWR_ON_N pad status can be left open.

5.2. Module Switch-Off

AT command AT+CPWROFF enables the user to properly switch the AirPrime HL7648 module off.

Figure 9. Power OFF Sequence for PWR_ON_N, VGPIO

Note: PWR_ON_N is internally pulled up by 100kΩ to 1.8 V.

4119069 Rev 3.1 October 27, 2016 35

Product Technical Specification

Design Guidelines

5.3. Emergency Power OFF

If required, the module can be switched off by controlling the RESET_IN_N pad (pad 11). This must
only be used in emergency situations if the system freezes (not responding to AT commands).

To perform an emergency power off, a low level pulse must be sent on the RESET_IN_N pad for 20 ms
while the PWR_ON_N signal is inactive (high level). This action will immediately shut the HL7648
module down and the registers of the CPU and RAM memory will be reset for the next power on.

5.4. Sleep Mode Management

5.4.1. Using UART1

AT command AT+KSLEEP enables sleep mode configuration.

AT+KSLEEP=0:

 The module is active when DTR signal is active (low electrical level).

 When DTR is deactivated (high electrical level), the module enters sleep mode after a while.

 On DTR activation (low electrical level), the module wakes up.

AT+KSLEEP=1:

 The module determines when it enters sleep mode (when no more tasks are running).

 “0x00” character on the serial link wakes the module up.

AT+KSLEEP=2: The module never enters sleep mode.

5.4.2. Using USB

Use AT+KSLEEP=1 to allows the module to automatically enter sleep mode while the USB interface is
in use.

5.5. Power Supply Design

The AirPrime HL7648 module should not be supplied with voltage over 4.5V even temporarily or
however briefly.

If the system’s main board power supply unit is unstable or if the system’s main board is supplied with

over 4.5V, even in the case of transient voltage presence on the circuit, the module’s power amplifier
may be severely damaged.

To avoid such issues, add a voltage limiter to the module’s power supply lines so that VBATT and
VBATT_PA signal pads will never receive a voltage surge over 4.5V. The voltage limiter can be as
simple as a Zener diode with decoupling capacitors as shown in the diagram below.

4119069 Rev 3.1 October 27, 2016 36

Product Technical Specification

Design Guidelines

Power Supply

VBATT/VBATT_PA

D404

0.5 pF

D405

C404

1.5 mF

+

+

C405

150 µF

C407

100 nF

Figure 10. Voltage Limiter Example

5.6. ESD Guidelines for SIM Card

Decoupling capacitors must be added according to the drawings below as close as possible to the
SIM card connectors on UIM1_CLK, UIM1_RST, UIM1_VCC, UIM1_DATA and UIM1_DET signals to
avoid EMC issues and to comply with the requirements of ETSI and 3GPP standards covering the
SIM electrical interface.

A typical schematic including SIM detection is provided below.

Figure 11. EMC and ESD Components Close to the SIM

4119069 Rev 3.1 October 27, 2016 37

Product Technical Specification

Design Guidelines

5.7. ESD Guidelines for USB

When the USB interface is externally accessible, it is required to have ESD protection on the
USB_VBUS, USB_D+ and USB_D- signals.

Figure 12. ESD Protection for USB

Note: It is not recommended to have an ESD diode with feedback path from USB_VBUS to either

USB_D+ or USB_D-.

Sierra Wireless recommends using a 90Ω DLP0NSN900HL2L EMC filter and an RCLAMP0503N or

ESD5V3U2U-03LRH ESD diode.

4119069 Rev 3.1 October 27, 2016 38

6. Reliability Specification

Abbre via tion

Defin ition

IEC

International Electro technical Commission

ISO

International Organization for Standardization

Desig nati on

Condi tion

Performance Test
PT3T & PTRT

Standard: N/A

Special conditions:

 Temperature:

 Class A: -30°C to +70°C
 Class B: -40°C to +85°C

 Rate of temperature change: ± 3°C/min
 Recovery time: 3 hours

Operating conditions: Powered

Duration: 14 days

AirPrime HL7648 modules are tested against the Sierra Wireless Industrial Reliability Specification
defined below.

6.1. Reliability Compliance

AirPrime HL7648 modules connected on a development kit board application are compliant with the
following requirements.

Table 32. Standards Conformity

6.2. Reliability Prediction Model

6.2.1. Life Stress Test

The following tests the AirPrime HL7648 module’s product performance.

Table 33. Life Stress Test

4119069 Rev 3.1 October 27, 2016 39

Product Technical Specification

Reliability Specification

Desig nati on

Condi tion

Cold Test Active
COTA

Standard: IEC 680068-2-1, Test Ad

Special conditions:

 Temperature: -40°C
 Temperature variation: 1°C/min

Operating conditions: : Powered ON with a power cycle of 1 minute ON
and 2 minutes OFF

Duration: 3 days

Resistance to Heat Test
RH

Standard: IEC 680068-2-2, Test Bb

Special conditions:

 Temperature: +85°C
 Temperature variation: 1°C/min

Operating conditions: Powered ON with a power cycle of 15 minutes ON
and 15 minutes OFF

Duration: 50 days

Desig nati on

Condi tion

Humidity Test
HUT

Standard: IEC 60068-2-3, Test Ca

Special conditions:

 Temperature: +65°C
 RH: 95%
 Temperature variation: 3 +/- 0.6°C/min

Operating conditions: Powered on, DUT is powered up for 15 minutes and
OFF for 15 minutes

Duration: 10 days

6.2.2. Environmental Resistance Stress Tests

The following tests the AirPrime HL7648 module’s resistance to extreme temperature.

Table 34. Environmental Resistance Stress Tests

6.2.3. Corrosive Resistance Stress Tests

The following tests the AirPrime HL7648 module’s resistance to corrosive atmosphere.

Table 35. Corrosive Resistance Stress Tests

4119069 Rev 3.1 October 27, 2016 40

Product Technical Specification

Reliability Specification

Desig nati on

Condi tion

Component Solder Wettability
CSW

Standard: JESD22 – B102, Method 1/Condition C, Solderability Test
Method

Special conditions:
Test method: Dip and Look Test with Steam preconditioning 8 h+/-15min.

dip for 5 +0/-0.5 seconds

Operating conditions: Un-powered

Duration: 1 day

Moist Heat Cyclic Test
MHCT

Standard: IEC 60068-2-30, Test Db

Special conditions:

 Upper temperature: +40 ± 2°C
 Lower temperature: +25 ± 5°C
 RH:

 Upper temperature: 93%
 Lower temperature: 95%

 Number of cycles: 21 (1 cycle/24 hours)
 Temperature Variation: 3 +/- 0.6°C/min

Operating conditions: Powered ON for 15 minutes during each 3 hours
ramp up and 3 hours ramp down (in middle) for every cycle

Duration: 21 days

Desig nati on

Condi tion

Thermal Shock Test
TSKT

Standard: IEC 60068-2-14, Test Na

Special conditions:

 Temperature: -30°C to +80°C
 Temperature Variation: less than 30s
 Number of cycles: 600
 Dwell Time: 10 minutes

Operating conditions: Un-powered

Duration: 9 days

Temperature Change
TCH

Standard: IEC 60068-2-14, Test Nb

Special conditions:

 Temperature: -40°C to +90°C
 Temperature Variation: 3 +/- 0.6°C/min
 Number of cycles: 400
 Dwell Time: 10 minutes

Operating conditions: Un-powered

Duration: 29 days

6.2.4. Thermal Resistance Cycle Stress Tests

The following tests the AirPrime HL7648 module’s resistance to extreme temperature cycling.

Table 36. Thermal Resistance Cycle Stress Tests

4119069 Rev 3.1 October 27, 2016 41

Product Technical Specification

Reliability Specification

Desig nati on

Condi tion

Sinusoidal Vibration Test
SVT

Standard: IEC 60068-2-6, Test Fc

Special conditions:

 Frequency range: 16 Hz to 1000 Hz
 Displacement: 0.35mm (peak-peak)
 Acceleration:

 5G from 16 to 62 Hz
 3G from 62 to 200 Hz
 1G from 200 to 1000 Hz

 Sweep rate: 1 octave / cycle
 Number of Sweep: 20 sweeps/axis
 Sweep direction: +/- X,+/- Y, +/- Z

Operating conditions: Un-powered

Duration: 2 days

Random Vibration Test
RVT

Standard: IEC 60068-2-64, Test Fh

Special conditions:

 Frequency range: 10 Hz – 2000 Hz
 Power Spectral Density in [(m/s²)²/Hz]

 0.1 g2/Hz at 10Hz
 0.01 g2/Hz at 250Hz
 0.005 g2/Hz at 1000Hz
 0.005 g2/Hz at 2000Hz

 Peak factor : 3
 Duration per Axis : 1 hr / axis

Operating conditions: Un-powered

Duration: 1 day

Mechanical Shock Test
MST

Standard: IEC 60068-2-27, Test Ea

Special conditions:

 Shock Test 1:

 Wave form: Half sine
 Peak acceleration: 30g
 Duration: 11ms
 Number of shocks: 8
 Direction: ±X, ±Y, ±Z

 Shock Test 2:

 Wave form: Half sine
 Peak acceleration: 100g
 Duration: 6ms
 Number of shocks: 3
 Direction: ±X, ±Y, ±Z

Operating conditions: Un-powered

Duration: 72 hours

6.2.5. Mechanical Resistance Stress Tests

The following tests the AirPrime HL7648 module’s resistance to vibrations and mechanical shocks.

Table 37. Mechanical Resistance Stress Tests

4119069 Rev 3.1 October 27, 2016 42

Product Technical Specification

Reliability Specification

Desig nati on

Condi tion

ESDC Test

Standard: JESD22-A114, JESD22-A115, JESD22-C101

Special conditions:

 HBM (Human Body Model) : 1KV (Class 1C)
 MM (Machine Model) : 200V
 CDM (Charged Device Model) : 250V (Class II)

Operating conditions: Powered

Duration: 3 days

ESD Test

Standard: IEC 61000-4-2

Special conditions:

 Contact Voltage : ±2kV, ±4kV, ±6kV
 Air Voltage: ±2kV, ±4kV, ±8kV

Operating conditions: Powered

Duration: 3 days

Free Fall Test
FFT 1

Standard : IEC 60068-2-32, Test Ed

Special conditions:

 Number of drops: 2 drops per unit
 Height: 1m

Operating conditions: Un-powered

Duration: 6 hours

6.2.6. Handling Resistance Stress Tests

The following tests the AirPrime HL7648 module’s resistance to handling malfunctions and damage.

Table 38. Handling Resistance Stress Tests

4119069 Rev 3.1 October 27, 2016 43

7. FCC Legal Information

The HL7648 module has been granted modular approval for mobile applications. Integrators may use
the HL7648 module in their final products without additional FCC certification if they meet the
following conditions. Otherwise, additional FCC approvals must be obtained.

1. At least 20 cm separation distance between the antenna and the user’s body must be
maintained at all times.

2. To comply with FCC regulations limiting both maximum RF output power and human
exposure to RF radiation, the maximum antenna gain including cable loss in a mobile-only
exposure condition must not exceed:

 8.01 dBi in LTE Band 2

 5.00 dBi in LTE Band 4

 8.70 dBi in LTE Band 12

3. The HL7648 module must not transmit simultaneously with other collocated radio transmitters
within a host device.

4. The RF signal must be routed on the application board using tracks with a 50 Ω characteristic
impedance. Basically, the characteristic impedance depends on the dielectric, the track width
and the ground plane spacing. In order to respect this constraint, Sierra Wireless
recommends using MicroStrip or StripLine structure and computing the Tracks width with a
simulation tool (like AppCad shown in the figure below and that is available free of charge at

http://www.agilent.com).

If a multi-layered PCB is used, the RF path on the board must not cross any signal (digital,
analog or supply).

If necessary, use StripLine structure and route the digital line(s) "outside" the RF structure. An
example of proper routing is shown in the figure below.

4119069 Rev 3.1 October 27, 2016 44

Product Technical Specification

FCC Legal Information

Stripline and Coplanar design requires having a correct ground plane at both sides.
Consequently, it is necessary to add some vias along the RF path. It is recommended to use
Stripline design if the RF path is fairly long (more than 3 cm), since MicroStrip design is not
shielded. Consequently, the RF signal (when transmitting) may interfere with neighbouring
electronics (AF amplifier, etc.). In the same way, the neighbouring electronics (micro­controllers, etc.) may degrade the reception performances. The GSM/GPRS connector is
intended to be directly connected to a 50 Ω antenna and no matching is needed.

5. A label must be affixed to the outside of the end product into which the HL7648 module is
incorporated, with a statement similar to the following:

This device contains FCC ID: N7NHL7648

6. A user manual with the end product must clearly indicate the operating requirements and
conditions that must be observed to ensure compliance with current FCC RF exposure
guidelines.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.

IMPORTANT NOTE – FCC Radiation Exposure Statement:

This Modular Approval is limited to OEM installation for mobile and fixed applications only. The
antenna installation and operating configurations of this transmitter, including any applicable source­based time-averaging duty factor, antenna gain and cable loss must satisfy MPE categorical
Exclusion Requirements of §2.1091.

The antenna(s) used for this transmitter must be installed to provide a separation distance of at least
20 cm from all persons, must not be collocated or operating in conjunction with any other antenna or
transmitter, except in accordance with FCC multi-transmitter product procedures.

The end user has no manual instructions to remove or install the device and a separate approval is
required for all other operating configurations, including portable configurations with respect to 2.1093
and different antenna configurations.

When the module is installed in the host device, the FCC ID label must be visible through a window
on the final device or it must be visible when an access panel, door or cover is easily removed.
Otherwise, a second label must be placed on the outside of the final device that contains the following
text: Contains FCC ID: N7NHL7648.

The end product with an embedded HL7648 module may also need to pass the FCC Part 15
unintentional emission testing requirements and be properly authorized per FCC Part 15.

4119069 Rev 3.1 October 27, 2016 45

8. Ordering Information

Model Name

Descr iption

Part Num ber

HL7648

HL7648 embedded module

Contact Sierra Wireless for the latest SKU

DEV-KIT

HL Series Development Kit

6000620

Table 39. Ordering Information

4119069 Rev 3.1 October 27, 2016 46

9. Terms and Abbreviations

Abbre via tion

Defin ition

ADC

Analog to Digital Converter

AGC

Automatic Gain Control

AT

Attention (prefix for modem commands)

CDMA

Code Division Multiple Access

CF3

Common Flexible Form Factor

CLK

Clock

CODEC

Coder Decoder

CPU

Central Processing Unit

DAC

Digital to Analog Converter

DTR

Data Terminal Ready

EGNOS

European Geostationary Navigation Overlay Service

EMC

Electromagnetic Compatibility

EMI

Electromagnetic Interference

EN

Enable

ESD

Electrostatic Discharges

ETSI

European Telecommunications Standards Institute

FDMA

Frequency-division multiple access

GAGAN

GPS aided geo augmented navigation

GLONASS

Global Navigation Satellite System

GND

Ground

GNSS

Global Navigation Satellite System

GPIO

General Purpose Input Output

GPRS

General Packet Radio Service

GSM

Global System for Mobile communications

Hi Z

High impedance (Z)

IC

Integrated Circuit

IMEI

International Mobile Equipment Identification

I/O

Input / Output

LED

Light Emitting Diode

LNA

Low Noise Amplifier

MAX

Maximum

MIN

Minimum

MSAS

Multi-functional Satellite Augmentation System

N/A

Not Applicable

PA

Power Amplifier

PC

Personal Computer

PCB

Printed Circuit Board

PCL

Power Control Level

PLL

Phase Lock Loop

PWM

Pulse Width Modulation

QZSS

Quasi-Zenith Satellite System

4119069 Rev 3.1 October 27, 2016 47

Product Technical Specification

Terms and Abbreviations

Abbre via tion

Defin ition

RF

Radio Frequency

RFI

Radio Frequency Interference

RMS

Root Mean Square

RST

Reset

RTC

Real Time Clock

RX

Receive

SCL

Serial Clock

SDA

Serial Data

SIM

Subscriber Identification Module

SMD

Surface Mounted Device/Design

SPI

Serial Peripheral Interface

SW

Software

PSRAM

Pseudo Static RAM

TBC

To Be Confirmed

TBD

To Be Defined

TP

Test Point

TX

Transmit

TYP

Typical

UART

Universal Asynchronous Receiver-Transmitter

UICC

Universal Integrated Circuit Card

USB

Universal Serial Bus

UIM

User Identity Module

VBATT

Main Supply Voltage from Battery or DC adapter

VSWR

Voltage Standing Wave Ratio

WAAS

Wide Area Augmentation System

4119069 Rev 3.1 October 27, 2016 48