Quectel Wireless Solutions 201909EC25AFX Users Manual

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EC25 Mini PCIe

Hardware Design

LTE Module Series

Rev. EC25_Mini_PCIe_Hardware_Design_V1.1

Date: 2017-01-24

www.quectel.com

LTE Module Series

EC25 Mini PCIe Hardware Design

Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters:

Quectel Wireless Solutions Co., Ltd.

Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233

Tel: +86 21 5108 6236

Email: info@quectel.com

Or our local office. For more information, please visit:

http://www.quectel.com/support/salesupport.aspx

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Or email to: Support@quectel.com

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QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION

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TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT

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ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL

OR DESIGN.

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About the Document

History

Revision Date Author Description

1.0 2016-06-07

1.1 2017-01-24

Mountain ZHOU/

Frank WANG

Lyndon LIU/

Frank WANG

Initial

1. Deleted description of EC25-AUT Mini PCIe

in Table 1.

2. Added description of EC25-AU and EC25-J

Mini PCIe in Table 1.

3. Updated key features of EC25 Mini PCIe in

Table 2.

4. Added current consumption in Chapter 4.7.

5. Updated conducted RF receiving sensitivity

of EC25-A Mini PCIe in Table 17.

6. Added conducted RF receiving sensitivity of

EC25-J Mini PCIe in Table 18.

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Contents

About the Document ................................................................................................................................ 2

Contents .................................................................................................................................................... 3

Table Index ............................................................................................................................................... 5

Figure Index .............................................................................................................................................. 6

1 Introduction ....................................................................................................................................... 7

1.1. Safety Information ................................................................................................................... 8

2 Product Concept ............................................................................................................................. 13

2.1. General Description .............................................................................................................. 13

2.2. Description of Product Series ................................................................................................ 14

2.3. Key Features ......................................................................................................................... 15

2.4. Functional Diagram ............................................................................................................... 17

3 Application Interface ....................................................................................................................... 18

3.1. General Description .............................................................................................................. 18

3.2. EC25 Mini PCIe Interface ...................................................................................................... 18

3.2.1. Definition of Interface ................................................................................................... 18

3.2.2. Pin Assignment ............................................................................................................ 21

3.3. Power Supply ........................................................................................................................ 22

3.4. USIM Card Interface ...........................................................................................................

.. 23

3.5. USB Interface ........................................................................................................................ 24

3.6. UART Interface ..................................................................................................................... 25

3.7. PCM and I2C Interfaces ........................................................................................................ 26

3.8. Control Signals ...................................................................................................................... 28

3.8.1. RI Signal ...................................................................................................................... 29

3.8.2. DTR Signal .................................................................................................................. 29

3.8.3. W_DISABLE# Signal ................................................................................................... 29

3.8.4. PERST# Signal ............................................................................................................ 29

3.8.5. LED_WWAN# Signal ................................................................................................... 30

3.8.6. WAKE# Signal ............................................................................................................. 31

3.9. Antenna Interfaces ................................................................................................................ 31

4 Electrical and Radio Characteristics ............................................................................................. 33

4.1. General Description .............................................................................................................. 33

4.2. Power Supply Requirements ................................................................................................. 33

4.3. I/O Requirements .................................................................................................................. 34

4.4. RF Characteristics ................................................................................................................ 34

4.5.

GNSS Receiver ..................................................................................................................... 36

4.6. ESD Characteristics .............................................................................................................. 37

4.7. Current Consumption ............................................................................................................ 37

5 Dimensions and Packaging ............................................................................................................ 42

5.1. General Description .............................................................................................................. 42

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5.2. Mechanical Dimensions of EC25 Mini PCIe .......................................................................... 42

5.3. Standard Dimensions of Mini PCI Express ............................................................................ 43

5.4. Packaging Specification ........................................................................................................ 44

6 Appendix References ..................................................................................................................... 45

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Table Index

TABLE 1: DESCRIPTION OF EC25 MINI PCIE ................................................................................................ 14

TABLE 2: KEY FEATURES OF EC25 MINI PCIE ............................................................................................. 15

TABLE 3: DEFINITION OF I/O PARAMETERS ................................................................................................. 18

TABLE 4: DESCRIPTION OF PINS .................................................................................................................. 19

TABLE 5: DEFINITION OF VCC_3V3 AND GND PINS .................................................................................... 22

TABLE 6: USIM PIN DEFINITION ..................................................................................................................... 23

TABLE 7: PIN DEFINITION OF USB INTERFACE ........................................................................................... 24

TABLE 8: PIN DEFINITION OF THE UART INTERFACE ................................................................................. 25

TABLE 9: PIN DEFINITION OF PCM AND I2C INTERFACES ......................................................................... 26

TABLE 10: PIN DEFINITION OF CONTROL SIGNALS .................................................................................... 28

TABLE 11: RADIO OPERATIONAL STATES ..................................................................................................... 29

TABLE 12: INDICATIONS OF NETWORK STATUS ......................................................................................... 30

TABLE 13: ANTENNA REQUIREMENTS .......................................................................................................... 31

TABLE 14: POWER SUPPLY REQUIREMENTS .............................................................................................. 33

TABLE 15: I/O REQUIREMENTS ...................................................................................................................... 34

TABLE 16: EC25 MINI PCIE CONDUCTED RF OUTPUT POWER ................................................................. 34

TABLE 17: EC25-A MINI PCIE CONDUCTED RF RECEIVING SENSITIVITY ................................................ 35

TABLE 18: EC25-J MINI PCIE CONDUCTED RF RECEIVING SENSITIVITY ................................................ 35

TABLE 19: EC25-E MINI PCIE CONDUCTED RF RECEIVING SENSITIVITY ................................................ 36

TABLE 20: EC25-V MINI PCIE CONDUCTED RF RECEIVING SENSITIVITY ................................................ 36

TABLE 21: ESD CHARACTERISTICS OF EC25 MINI PCIE ............................................................................ 37

TABLE 22: CURRENT CONSUMPTION OF EC25-A MINI PCIE ..................................................................... 37

TABLE 23: CURRENT CONSUMPTION OF EC25-E MINI PCIE ..................................................................... 38

TABLE 24: CURRENT CONSUMPTION OF EC25-V MINI PCIE ..................................................................... 41

TABLE 25: GNSS CURRENT CONSUMPTION OF EC25 MINI PCIE SERIES MODULE ............................... 41

TABLE 26: RELATED DOCUMENTS ................................................................................................................ 45

TABLE 27: TERMS AND ABBREVIATIONS ...................................................................................................... 45

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Figure Index

FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 17

FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 21

FIGURE 3: REFERENCE DESIGN OF POWER SUPPLY ............................................................................... 22

FIGURE 4: REFERENCE CIRCUIT OF USIM CARD INTERFACE WITH A 6-PIN USIM CARD CONNECTOR

........................................................................................................................................................................... 23

FIGURE 5: REFERENCE CIRCUIT OF USB INTERFACE .............................................................................. 24

FIGURE 6: TIMING IN PRIMARY MODE .......................................................................................................... 27

FIGURE 7: TIMING IN AUXILIARY MODE ....................................................................................................... 27

FIGURE 8: REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC ...................................... 28

FIGURE 9: RI BEHAVIOR ................................................................................................................................. 29

FIGURE 10: TIMING OF RESETTING MODULE ............................................................................................. 30

FIGURE 11: LED_WWAN# SIGNAL REFERENCE CIRCUIT DIAGRAM ......................................................... 30

FIGURE 12: WAKE# BEHAVIOR ...................................................................................................................... 31

FIGURE 13: DIMENSIONS OF THE RF CONNECTOR (UNIT: MM) ............................................................... 32

FIGURE 14: MECHANICALS OF U.FL-LP CONNECTORS ............................................................................. 32

FIGURE 15: MECHANICAL DIMENSIONS OF EC25 MINI PCIE (UNIT: MM) ................................................. 42

FIGURE 16: STANDARD DIMENSIONS OF MINI PCI EXPRESS (UNIT: MM) ............................................... 43

FIGURE 17: DIMENSIONS OF THE MINI PCI EXPRESS CONNECTOR (MOLEX 679100002, UNIT: MM) .. 44



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1 Introduction

This document defines EC25 Mini PCIe module, and describes its hardware interfaces which are

connected with your application as well as its air interfaces.

This document can help you to quickly understand the interface specifications, electrical and mechanical

details as well as other related information of EC25 Mini PCIe module. To facilitate its application in

different fields, relevant reference design documents are also provided. Associated with application note

and user guide of EC25 Mini PCIe module, you can use the module to design and set up mobile

applications easily.

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1.1. Safety Information

The following safety precautions must be observed during all phases of the operation, such as usage,

service or repair of any cellular terminal or mobile incorporating EC25 Mini PCIe module. Manufacturers

of the cellular terminal should send the following safety information to users and operating personnel, and

incorporate these guidelines into all manuals supplied with the product. If not so, Quectel assumes no

liability for customers’ failure to comply with these precautions.

Full attention must be given to driving at all times in order to reduce the risk of an

accident. Using a mobile while driving (even with a handsfree kit) causes

distraction and can lead to an accident. You must comply with laws and regulations

restricting the use of wireless devices while driving.

Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is

switched off. The operation of wireless appliances in an aircraft is forbidden, so as

to prevent interference with communication systems. Consult the airline staff about

the use of wireless devices on boarding the aircraft, if your device offers an

Airplane Mode which must be enabled prior to boarding an aircraft.

Switch off your wireless device when in hospitals, clinics or other health care facilities. These requests are desinged to prevent possible interference with sensitive medical equipment.

Cellular terminals or mobiles operating over radio frequency signal and cellular

network cannot be guaranteed to connect in all conditions, for example no mobile

fee or with an invalid USIM/SIM card. While you are in this condition and need

emergent help, please remember using emergency call. In order to make or

receive a call, the cellular terminal or mobile must be switched on and in a service

area with adequate cellular signal strength.

Your cellular terminal or mobile contains a transmitter and receiver. When it is ON,

it receives and transmits radio frequency energy. RF interference can occur if it is

used close to TV set, radio, computer or other electric equipment.

In locations with potentially explosive atmospheres, obey all posted signs to turn

off wireless devices such as your phone or other cellular terminals. Areas with

potentially explosive atmospheres include fuelling areas, below decks on boats,

fuel or chemical transfer or storage facilities, areas where the air contains

chemicals or particles such as grain, dust or metal powders, etc.

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FCC Certification Requirements.

According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a

mobile device.

And the following conditions must be met:

1. 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 source-based time-

averaging duty factor, antenna gain and cable loss must satisfy MPE categorical Exclusion Requirements

of 2.1091.

2. The EUT is a mobile device; maintain at least a 20 cm separation between the EUT and the user’s body

and must not transmit simultaneously with any other antenna or transmitter.

3.A label with the following statements must be attached to the host end product: This device contains

FCC ID: XMR201909EC25AFX.

4.To comply with FCC regulations limiting both maximum RF output power and human exposure to RF

radiation, maximum antenna gain (including cable loss) must not exceed:

❒ WCDMA B2/LTE B2: <8dBi

❒ WCDMA B4LTE B4/B66: <5dBi

❒ WCDMA B5/LTE B5: <9.416dBi

❒ LTE B14: <9.255dBi

❒ LTE B13: <9.173dBi

❒ LTE B12: <8.734dBi

❒ LTE B71: <8.545dBi

5. This module must not transmit simultaneously with any other antenna or transmitter

6. The host end product must include a user manual that clearly defines operating requirements and

conditions that must be observed to ensure compliance with current FCC RF exposure guidelines.

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For portable devices, in addition to the conditions 3 through 6 described above, a separate approval is

required to satisfy the SAR requirements of FCC Part 2.1093

If the device is used for other equipment that separate approval is required for all other operating

configurations, including portable configurations with respect to 2.1093 and different antenna

configurations.

For this device, OEM integrators must be provided with labeling instructions of finished products.

Please refer to KDB784748 D01 v07, section 8. Page 6/7 last two paragraphs:

A certified modular has the option to use a permanently affixed label, or an electronic label. For a

permanently affixed label, the module must be labeled with an FCC ID - Section 2.926 (see 2.2

Certification (labeling requirements) above). The OEM manual must provide clear instructions

explaining to the OEM the labeling requirements, options and OEM user manual instructions that are

required (see next paragraph).

For a host using a certified modular with a standard fixed label, if (1) the module’s FCC ID is not visible

when installed in the host, or (2) if the host is marketed so that end users do not have straightforward

commonly used methods for access to remove the module so that the FCC ID of the module is visible;

then an additional permanent label referring to the enclosed module:“Contains Transmitter Module FCC

ID: XMR201909EC25AFX” or “Contains FCC ID: XMR201909EC25AFX” must be used. The host OEM

user manual must also contain clear instructions on how end users can find and/or access the module

and the FCC ID.

The final host / module combination may also need to be evaluated against the FCC Part 15B criteria

for unintentional radiators in order to be properly authorized for operation as a Part 15 digital device.

The user’s manual or instruction manual for an intentional or unintentional radiator shall caution the

user that changes or modifications not expressly approved by the party responsible for compliance

could void the user's authority to operate the equipment. In cases where the manual is provided only in

a form other than paper, such as on a computer disk or over the Internet, the information required by

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this section may be included in the manual in that alternative form, provided the user can reasonably be

expected to have the capability to access information in that form.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.

Changes or modifications not expressly approved by the manufacturer could void the user’s authority to

operate the equipment.

To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring

compliance with the module(s) installed and fully operational. For example, if a host was previously

authorized as an unintentional radiator under the Declaration of Conformity procedure without a

transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that

the after the module is installed and operational the host continues to be compliant with the Part 15B

unintentional radiator requirements.

IC Statement

IRSS-GEN

"This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following

two conditions: (1) This device may not cause interference; and (2) This device must accept any

interference, including interference that may cause undesired operation of the device." or "Le présent

appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.

L’exploitation est autorisée aux deux conditions suivantes :

1) l’appareil ne doit pas produire de brouillage; 2) l’utilisateur de l’appareil doit accepter tout brouillage

radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement."

Déclaration sur l'exposition aux rayonnements RF

L'autre utilisé pour l'émetteur doit être installé pour fournir une distance de séparation d'au moins 20 cm

de toutes les personnes et ne doit pas être colocalisé ou fonctionner conjointement avec une autre

antenne ou un autre émetteur.

The host product shall be properly labeled to identify the modules within the host product.

The Innovation, Science and Economic Development Canada certification label of a module shall be

clearly visible at all times when installed in the host product; otherwise, the host product must be labeled

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to display the Innovation, Science and Economic Development Canada certification number for the

module, preceded by the word “Contains” or similar wording expressing the same meaning, as follows:

“Contains IC: 10224A-2019EC25AFX” or “where: 10224A-2019EC25AFX is the module’s certification

number”.

Le produit hôte doit être correctement étiqueté pour identifier les modules dans le produit hôte.

L'étiquette de certification d'Innovation, Sciences et Développement économique Canada d'un module

doit être clairement visible en tout temps lorsqu'il est installédans le produit hôte; sinon, le produit hôte

doit porter une étiquette indiquant le numéro de certification d'Innovation, Sciences et Développement

économique Canada pour le module, précédé du mot «Contient» ou d'un libellé semblable exprimant la

même signification, comme suit:

"Contient IC: 10224A-2019EC25AFX" ou "où: 10224A-2019EC25AFX est le numéro de certification du

module"

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2 Product Concept

2.1. General Description

EC25 Mini PCIe module provides data connectivity on LTE-FDD, LTE-TDD, WCDMA and GSM networks

with PCI Express Mini Card 1.2 standard interface. It supports embedded operating systems such as

WinCE, Linux, Android, etc., and also provides audio, high-speed data transmission and GNSS

functionalities for your applications.

EC25 Mini PCIe module can be applied in the following fields:

 PDA and Laptop Computer

 Remote Monitor System

 Vehicle System

 Wireless POS System

 Intelligent Meter Reading System

 Wireless Router and Switch

 Other Wireless Terminal Devices

This chapter generally introduces the following aspects of EC25 Mini PCIe module:

 Product Series

 Key Features

 Functional Diagram



NOTE

EC25 Mini PCIe contains Telematics version and Data-only version. Telematics version supports voice and data functions, while Data-only version only supports data function.

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2.2. Description of Product Series

The following table shows the product series of EC25 Mini PCIe module.

Table 1: Description of EC25 Mini PCIe

Product Series Description

Support WCDMA: B2/B4/B5

Support LTE-FDD: B2/B4/B12

EC25-A Mini PCIe

EC25-AU Mini PCIe3)

Support LTE/WCDMA receive diversity

Support GNSS

Support digital audio

Support GSM: 850/900/1800/1900MHz

Support WCDMA: B1/B2/B5/B8

Support LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B28

Support LTE-TDD: B40

Support LTE/WCDMA receive diversity

Support GNSS

Support digital audio

EC25-J Mini PCIe

EC25-E Mini PCIe

EC25-V Mini PCIe

Support WCDMA: B1/B6/B8/B19

Support LTE-FDD: B1/B3/B8/B18/B19/B26

Support LTE-TDD: B41

Support LTE/WCDMA receive diversity

Support GNSS

Support digital audio

Support GSM: 900/1800MHz

Support WCDMA: B1/B5/B8

Support LTE-FDD: B1/B3/B5/B7/B8/B20

Support LTE-TDD: B38/B40/B41

Support LTE/WCDMA receive diversity

Support GNSS

Support digital audio

Support LTE-FDD: B4/B13

Support LTE receive diversity

Support GNSS

Support digital audio

NOTES

GNSS function is optional.

Digital audio (PCM) function is only supported in Telematics version.

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B2 band on EC25-AU Mini PCIe module does not support receive diversity.

2.3. Key Features

The following table describes the detailed features of EC25 Mini PCIe module.

Table 2: Key Features of EC25 Mini PCIe

Feature Details

Function Interface PCI Express Mini Card 1.2 Standard Interface

Power Supply

Transmitting Power

LTE Features

WCDMA Features

Supply voltage: 3.0~3.6V

Typical supply voltage: 3.3V

Class 4 (33dBm±2dB) for GSM850

Class 4 (33dBm±2dB) for GSM900

Class 1 (30dBm±2dB) for DCS1800

Class 1 (30dBm±2dB) for PCS1900

Class E2 (27dBm±3dB) for GSM850 8-PSK

Class E2 (27dBm±3dB) for GSM900 8-PSK

Class E2 (26dBm±3dB) for DCS1800 8-PSK

Class E2 (26dBm±3dB) for PCS1900 8-PSK

Class 3 (24dBm+1/-3dB) for WCDMA bands

Class 3 (23dBm±2dB) for LTE-FDD bands

Class 3 (23dBm±2dB) for LTE-TDD bands

Support up to non-CA Cat 4

Support 1.4 to 20MHz RF bandwidth

Support MIMO in DL direction

FDD: Max 50Mbps (UL), 150Mbps (DL)

TDD: Max 35Mbps (UL), 130Mbps (DL)

Support 3GPP R8 DC-HSPA+

Support 16-QAM, 64-QAM and QPSK modulation

3GPP R6 Cat 6 HSUPA: Max 5.76Mbps (UL)

3GPP R8 Cat 24 DC-HSPA+: Max 42Mbps (DL)

R99:

CSD: 9.6kbps, 14.4kbps

GPRS:

GSM Features

Support GPRS multi-slot class 12 (12 by default)

Coding scheme: CS-1, CS-2, CS-3 and CS-4

Maximum of four Rx time slots per frame

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Internet Protocol Features

SMS

LTE Module Series

EDGE:

Support EDGE multi-slot class 12 (12 by default)

Support GMSK and 8-PSK for different MCS (Modulation and Coding

Scheme)

Downlink coding schemes: CS 1-4, MCS 1-9

Uplink coding schemes: CS 1-4, MCS 1-9

Support TCP/UDP/PPP/FTP/HTTP/NTP/PING/QMI/HTTPS*/SMTP*/

MMS*/FTPS*/SMTPS*/SSL* protocols

Support the protocols PAP (Password Authentication Protocol) and CHAP

(Challenge Handshake Authentication Protocol) usually used for PPP

connections

Text and PDU mode

Point to point MO and MT

SMS cell broadcast

SMS storage: ME by default

USIM Interface Support USIM/SIM card: 1.8V, 3.0V

UART Interface

Baud rate can reach up to 230400bps, 115200bps by default

Used for AT command communication

Support one digital audio interface: PCM interface

GSM: HR/FR/EFR/AMR/AMR-WB

Audio Feature

WCDMA: AMR/AMR-WB

LTE: AMR/AMR-WB

Support echo cancellation and noise suppression

Support 8-bit A-law*, μ-law* and 16-bit linear data formats

PCM Interface

Support long frame synchronization and short frame synchronization

Support master and slave mode, but must be the master in long frame

synchronization

Compliant with USB 2.0 specification (slave only); the data transfer rate

can reach up to 480Mbps

USB Interface

Used for AT command communication, data transmission, firmware

upgrade, software debugging, GNSS NMEA output and voice over USB*

USB Driver: Windows XP, Windows Vista, Windows 7, Windows 8/8.1,

Windows 10, Linux 2.6 or later, Android 4.0/4.2/4.4/5.0/5.1/6.0

Antenna Interface Include main antenna, diversity antenna and GNSS antenna

Rx-diversity Support LTE/WCDMA Rx-diversity

GNSS Features

AT Commands

Physical Characteristics

Gen8C Lite of Qualcomm

Protocol: NMEA 0183

Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT

commands

Size: (51.0±0.1) × (30.0±0.1) × (4.9±0.2 mm)

Weight: approx. 9.8g

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Temperature Range

Operation temperature range: -35°C ~ +75°C1)

Extended temperature range: -40°C ~ +80°C2)

Firmware Upgrade USB interface and DFOTA*

RoHS All hardware components are fully compliant with EU RoHS directive

NOTES

1. “*” means under development.

2. 1) Within operating temperature range, the module is 3GPP compliant.

3. 2) Within extended temperature range, the module remains the ability to establish and maintain a

voice, SMS, data transmission, emergency call, etc. There is no unrecoverable malfunction; there are

also no effects on radio spectrum and no harm to radio network. Only one or more parameters like

might reduce in their value and exceed the specified tolerances. When the temperature returns

out

to normal operating temperature levels, the module is compliant with 3GPP specification again.

2.4. Functional Diagram

The following figure shows the block diagram of EC25 Mini PCIe.

Figure 1: Functional Diagram

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3 Application Interface

3.1. General Description

The physical connections and signal levels of EC25 Mini PCIe comply with PCI Express Mini CEM

specifications. This chapter mainly describes the following interfaces’ definition and application of EC25

Mini PCIe:

 Power supply

 USIM card interface

 USB interface

 UART interface

 PCM&I2C interfaces

 Control signals

 Antenna interface

3.2. EC25 Mini PCIe Interface

3.2.1. Definition of Interface

The following tables show the pin definition and description of EC25 Mini PCIe on the 52-pin application.

Table 3: Definition of I/O Parameters

Type Description

IO Bidirectional

DI Digital input

DO Digital output

OC Open collector

PI Power input

PO Power output

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Table 4: Description of Pins

LTE Module Series

Pin No.

Mini PCI Express Standard Name

1 WAKE# WAKE# OC

EC25 Mini PCIe Pin Name

I/O Description Comment

Output signal can be used

to wake up the host.

2 3.3Vaux VCC_3V3 PI 3.3V DC supply

3 COEX1 RESERVED Reserved

4 GND GND Mini card ground

5 COEX2 RESERVED Reserved

6 1.5V NC

7 CLKREQ# RESERVED Reserved

8 UIM_PWR USIM_VDD PO

Power source for the USIM

card

9 GND GND Mini card ground

10 UIM_DATA USIM_DATA IO USIM data signal

11 REFCLK- UART_RX DI UART receive data

Connect to

DTE’s TX

12 UIM_CLK USIM_CLK DO USIM clock signal

13 REFCLK+ UART_TX DO UART transmit data

Connect to

DTE’s RX

14 UIM_RESET USIM_RST DO USIM reset signal

15 GND GND Mini card ground

16 UIM_VPP RESERVED Reserved

17 RESERVED RI DO

Output signal can be used

to wake up the host.

18 GND GND Mini card ground

19 RESERVED RESERVED Reserved

Pull-up by default Active low

20 W_DISABLE# W_DISABLE# DI

Disable wireless communications

21 GND GND Mini card ground

22 PERST# PERST# DI Functional reset to the card Active low

23 PERn0 UART_CTS DI UART clear to send

Connect to

DTE’s RTS

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24 3.3Vaux RESERVED Reserved

25 PERp0 UART_RTS DO UART request to send

Connect to

DTE’s CTS

26 GND GND Mini card ground

27 GND GND Mini card ground

28 1.5V NC

29 GND GND Mini card ground

Require

30 SMB_CLK I2C_SCL DO I2C serial clock

external

pull-up to

1.8V.

31 PETn0 DTR DI Sleep mode control

Require

32 SMB_DATA I2C_SDA IO I2C serial data

external

pull-up to

1.8V.

33 PETp0 RESERVED Reserved

34 GND GND Mini card ground

35 GND GND Mini card ground

36 USB_D- USB_DM IO USB differential data (-)

37 GND GND Mini card ground

38 USB_D+ USB_DP IO USB differential data (+)

39 3.3Vaux VCC_3V3 PI 3.3V DC supply

40 GND GND Mini card ground

41 3.3Vaux VCC_3V3 PI 3.3V DC supply

Active-low. LED signal for

42 LED_WWAN# LED_WWAN# OC

indicating the state of the

card.

43 GND GND

Mini card ground

44 LED_WLAN# RESERVED Reserved

45 RESERVED PCM_CLK* IO PCM clock signal

46 LED_WPAN# RESERVED Reserved

47 RESERVED PCM_DOUT* DO PCM data output

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48 1.5V NC

49 RESERVED PCM_DIN* DI PCM data input

50 GND GND Mini card ground

51 RESERVED PCM_SYNC* IO PCM frame synchronization

52 3.3Vaux VCC_3V3 PI 3.3V DC supply

NOTES

1. Keep all NC, reserved and unused pins unconnected.

2. “*” means the digital audio (PCM) function is only supported on Telematics version.

3.2.2. Pin Assignment

The following figure shows the pin assignment of EC25 Mini PCIe module. The top side contains EC25

module and antenna connectors.

PIN1

TOP

PIN51

PIN2

BOT

PIN52

Figure 2: Pin Assignment

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3.3. Power Supply

The following table shows pin definition of VCC_3V3 pins and ground pins.

Table 5: Definition of VCC_3V3 and GND Pins

Pin No. Pin Name I/O Power Domain Description

2, 39, 41, 52 VCC_3V3 PI 3.0~3.6V 3.3V DC supply

4, 9, 15, 18, 21,

26, 27, 29, 34, 35,

37, 40, 43, 50

The typical supply voltage of EC25 Mini PCIe is 3.3V. In the 2G networks, the input peak current may

reach to 2.7A during the transmitting time. Therefore, the power supply must be able to provide enough

current, and a bypass capacitor of no less than 470µF with low ESR should be used to prevent the

voltage from dropping.

The following figure shows a reference design of power supply. The precision of resistor R2 and R3 is 1%,

and the capacitor C3 needs a low ESR.

GND Mini card ground

Figure 3: Reference Design of Power Supply

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3.4. USIM Card Interface

The following table shows the pin definition of USIM card interface.

Table 6: USIM Pin Definition

Pin No. Pin Name I/O Power Domain Description

8 USIM_VDD PO 1.8V/3.0V Power source for the USIM card

10 USIM_DATA IO 1.8V/3.0V USIM data signal

12 USIM_CLK DO 1.8V/3.0V USIM clock signal

14 USIM_RST DO 1.8V/3.0V USIM reset signal

EC25 Mini PCIe supports 1.8V and 3.0V USIM cards. The following figure shows a reference design for a

6-pin USIM card connector.

Figure 4: Reference Circuit of USIM Card Interface with a 6-Pin USIM Card Connector

In order to enhance the reliability and availability of the USIM card in your application, please follow the

criteria below in USIM circuit design:

 Keep layout of USIM card as close to the module as possible. Keep the trace length as less than

200mm as possible.

 Keep USIM card signal away from RF and power supply traces.

 Keep the trace width of ground and USIM_VDD no less than 0.5mm to maintain the same electric

potential. The decouple capacitor of USIM_VDD should be less than 1uF and must near to USIM

card connector.

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 To avoid cross-talk between USIM_DATA and USIM_CLK, keep them away from each other and

shield them with surrounded ground.

 In order to offer good ESD protection, it is recommended to add a TVS whose parasitic capacitance

should not be more than 50pF. The 22 ohm resistors should be added in series between the module

and the USIM card so as to suppress EMI spurious transmission and enhance ESD protection. The

33pF capacitors are used for filtering interference of GSM900. Please note that the USIM peripheral

circuit should be close to the USIM card connector.

 The pull-up resistor on USIM_DATA line can improve anti-jamming capability when long layout trace

and sensitive occasion are applied, and should be placed close to the USIM card connector.

3.5. USB Interface

The following table shows the pin definition of USB interface.

Table 7: Pin Definition of USB Interface

Pin No. Pin Name I/O Description Comment

36 USB_DM IO USB differential data (-) Require differential impedance of 90Ω

38 USB_DP IO USB differential data (+) Require differential impedance of 90Ω

EC25 Mini PCIe is compliant with USB 2.0 specification. It can only be used as a slave device. Meanwhile,

it supports high speed (480Mbps) mode and full speed (12Mbps) mode. The USB interface is used for AT

command communication, data transmission, GNSS NMEA output, software debugging, firmware

upgrade and voice over USB*. The following figure shows a reference circuit of USB interface.

Figure 5: Reference Circuit of USB Interface

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In order to ensure the integrity of USB data line signal, components R1, R2, R3 and R4 must be placed

close to the module, and also these resistors should be placed close to each other. The extra stubs of

trace must be as short as possible.

In order to ensure the USB interface design corresponding with the USB 2.0 specification, please comply

with the following principles:

 It is important to route the USB signal traces as differential pairs with total grounding. The impedance

of USB differential trace is 90 ohm.

 Do not route signal traces under crystals, oscillators, magnetic devices or RF signal traces. It is

important to route the USB differential traces in inner-layer with ground shielding on not only upper

and lower layers but also right and left sides.

 If USB connector is used, please keep the ESD protection components to the USB connector as

close as possible. Pay attention to the influence of junction capacitance of ESD protection

components on USB data lines. Typically, the capacitance value should be less than 2pF.

 Keep traces of USB data test points short to avoid noise coupled on USB data lines. If possible,

reserve a 0R resistor on these two lines.

NOTES

1. There are three preconditions when enabling EC25 Mini PCIe to enter into the sleep mode:

a) Execute AT+QSCLK=1 command to enable the sleep mode. Please refer to document [2] for

details.

b) DTR pin should be kept in high level (pull-up internally).

c) USB interface on Mini PCIe must be connected with the USB interface of the host and please

guarantee the USB of the host is in suspended state.

2. “*” means under development.

3.6. UART Interface

The following table shows the pin definition of the UART interface.

Table 8: Pin Definition of the UART Interface

Pin No. EC25 Mini PCIe Pin Name I/O Power Domain Description

11 UART_RX DI 3.3V UART receive data

13 UART_TX DO 3.3V UART transmit data

23 UART_CTS DI 3.3V UART clear to send

25 UART_RTS DO 3.3V UART request to send

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The UART interface supports 9600, 19200, 38400, 57600, 115200 and 230400bps baud rate. The default

is 115200bps. This interface can be used for AT command communication.

NOTE

AT+IPR command can be used to set the baud rate of the UART, and AT+IFC command can be used to

set the hardware flow control (hardware flow control is disabled by default). Please refer to document [2]

for details.

3.7. PCM and I2C Interfaces

The following table shows the pin definition of PCM and 12C interfaces that can be applied in audio codec

design.

Table 9: Pin Definition of PCM and I2C Interfaces

Pin No. Pin Name I/O Power Domain Description

45 PCM_CLK IO 1.8V PCM clock signal

47 PCM_DOUT DO 1.8V PCM data output

49 PCM_DIN DI 1.8V PCM data input

51 PCM_SYNC IO 1.8V PCM frame synchronization

30 I2C_SCL DO 1.8V

32 I2C_SDA IO 1.8V

EC25 Mini PCIe provides one PCM digital interface, which supports 8-bit A-law* and μ-law*, and also

supports 16-bit linear data formats and the following modes:

 Primary mode (short frame synchronization, works as either master or slave)

 Auxiliary mode (long frame synchronization, works as master only)

I2C serial clock, require external

pull-up to 1.8V.

I2C serial data, require external

pull-up to 1.8V.

NOTE

“*” means under development.

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In primary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising

edge. The PCM_SYNC falling edge represents the MSB. In this mode, PCM_CLK supports 128, 256, 512,

1024 and 2048kHz for different speed codecs. The following figure shows the timing relationship in

primary mode with 8kHz PCM_SYNC and 2048kHz PCM_CLK.

Figure 6: Timing in Primary Mode

In auxiliary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising

edge; while the PCM_SYNC rising edge represents the MSB. In this mode, PCM interface operates with a

128kHz PCM_CLK and an 8kHz, 50% duty cycle PCM_SYNC only. The following figure shows the timing

relationship in auxiliary mode with 8kHz PCM_SYNC and 128kHz PCM_CLK.

Figure 7: Timing in Auxiliary Mode

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Clock and mode can be configured by AT command, and the default configuration is master mode using

short frame synchronization format with 2048kHz PCM_CLK and 8kHz PCM_SYNC. In addition, EC25

Mini PCIe’s firmware has integrated the configuration on some PCM codec’s application with I2C interface.

Please refer to document [2] for details about AT+QDAI command.

The following figure shows a reference design of PCM interface with an external codec IC.

Figure 8: Reference Circuit of PCM Application with Audio Codec

3.8. Control Signals

The following table shows the pin definition of control signals.

Table 10: Pin Definition of Control Signals

Pin No. Pin Name I/O Power Domain Description

17 RI DO 3.3V

31 DTR DI 3.3V Sleep mode control

20 W_DISABLE# DI 3.3V

Output signal can be used to wake up

the host.

Disable wireless communications;

pull-up by default, active low.

22 PERST# DI 3.3V Functional reset to the card; active low.

42 LED_WWAN# OC

1 WAKE# OC

Active-low. LED signal for indicating the

state of the module.

Output signal can be used to wake up

the host.

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3.8.1. RI Signal

The RI signal can be used to wake up the host. When URC returns, there will be the following behavior on

the RI pin after executing AT+QCFG=“risignaltype”,“physical” command.

Figure 9: RI Behavior

3.8.2. DTR Signal

The DTR signal supports sleep control function. Driving it to low level will wake up the module.

3.8.3. W_DISABLE# Signal

EC25 Mini PCIe provides W_DISABLE# signal to disable wireless communications through hardware

operation. The following table shows the radio operational states of the module. Please refer to

document [2] for related AT commands.

Table 11: Radio Operational States

W_DISABLE# AT Commands Radio Operation

High Level

Low Level

AT+CFUN=1 AT+CFUN=0

AT+CFUN=4 AT+CFUN=0

AT+CFUN=1 AT+CFUN=4

Enabled

Disabled

3.8.4. PERST# Signal

The PERST# signal can be used to force a hardware reset on the card. You can reset the module by

driving the PERST# to a low level voltage with the time frame of 150~460ms and then releasing it. The

reset scenario is illustrated in the following figure.

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Figure 10: Timing of Resetting Module

3.8.5. LED_WWAN# Signal

LTE Module Series

The LED_WWAN# signal of EC25 Mini PCIe is used to indicate the network status of the module, which

can absorb the current up to 40mA. According to the following circuit, in order to reduce the current of the

LED, a resistor must be placed in series with the LED. The LED is emitting light when the LED_WWAN#

output signal is active low.

Figure 11: LED_WWAN# Signal Reference Circuit Diagram

The following table shows the network status indications of the LED_WWAN# signal.

Table 12: Indications of Network Status

LED_WWAN# Description

Low Level (Light on) Registered on network

 No network coverage or not registered

High-impedance (Light off)

 W_DISABLE# signal is at low level. (Disable the RF)

 AT+CFUN=0, AT+CFUN=4

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3.8.6. WAKE# Signal

The WAKE# signal is an open collector signal which is similar to RI signal, but a host pull-up resistor and

AT+QCFG=“risignaltype”,“physical” command are required. When URC returns, there will be 120ms

low level pulse output as below.

Figure 12: WAKE# Behavior

3.9. Antenna Interfaces

EC25 Mini PCIe antenna interfaces include a main antenna interface, an Rx-diversity antenna interface

and a GNSS antenna interface. And Rx-diversity function is enabled by default.

The following table shows the requirement on main antenna, Rx-diversity antenna and GNSS antenna.

Table 13: Antenna Requirements

Type Requirements

Frequency range: 1561~1615MHz

GNSS

GSM/WCDMA/LTE

Polarization: RHCP or linear

VSWR: <2 (Typ.)

Passive antenna gain: >0dBi

VSWR: ≤2

Gain (dBi): 1

Max Input Power (W): 50

Input Impedance (ohm): 50

Polarization Type: Vertical

Cable Insertion Loss: <1dB

(GSM900, WCDMA B5/B8, LTE B5/B8/B12/B17/B20)

Cable Insertion Loss: <1.5dB

(GSM1800, WCDMA B1/B2/B3/B4, LTE B1/B2/B3/B4)

Cable insertion loss: <2dB

(LTE B7/B38/B40/B41)

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The following figure shows the overall sizes of RF connector.

Figure 13: Dimensions of the RF Connector (Unit: mm)

U.FL-LP serial connectors listed in the following figure can be used to match the RF connector.

Figure 14: Mechanicals of U.FL-LP Connectors

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4 Electrical and Radio Characteristics

4.1. General Description

This chapter mainly describes the following electrical and radio characteristics of EC25 Mini PCIe:

 Power supply requirements

 I/O requirements

 Current consumption

 RF characteristics

 GNSS receiver

 ESD characteristics

4.2. Power Supply Requirements

The input voltage of EC25 Mini PCIe is 3.3V±9%, as specified by PCI Express Mini CEM Specifications

1.2. The following table shows the power supply requirements of EC25 Mini PCIe.

Table 14: Power Supply Requirements

Parameter Description Min. Typ. Max. Unit

VCC_3V3 Power Supply 3.0 3.3 3.6 V

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4.3. I/O Requirements

The following table shows the I/O requirements of EC25 Mini PCIe.

Table 15: I/O Requirements

Parameter Description Min. Max. Unit

VIH Input High Voltage 0.7 × VCC_3V3 VCC_3V3+0.3 V

VIL Input Low Voltage -0.3 0.3 × VCC_3V3 V

VOH Output High Voltage VCC_3V3-0.5 VCC_3V3 V

VOL Output Low Voltage 0 0.4 V

NOTES

1. The PCM and I2C interfaces belong to 1.8V power domain and other I/O interfaces belong to

VCC_3V3 power domain.

2. The maximum voltage value of V

for PERST# signal and W_DISABLE# signal is 0.5V.

4.4. RF Characteristics

The following tables show the conducted RF output power and receiving sensitivity of EC25 Mini PCIe

module.

Table 16: EC25 Mini PCIe Conducted RF Output Power

Frequency Max. Min.

GSM850/GSM900 33dBm±2dB 5dBm±5dB

DCS1800/PCS1900 30dBm±2dB 0dBm±5dB

GSM850/GSM900 (8-PSK) 27dBm±3dB 5dBm±5dB

DCS1800/PCS1900 (8-PSK) 26dBm±3dB 0dBm±5dB

WCDMA bands 24dBm+1/-3dB <-50dBm

LTE-FDD bands 23dBm±2dB <-44dBm

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LTE-TDD bands 23dBm±2dB <-44dBm

Table 17: EC25-A Mini PCIe Conducted RF Receiving Sensitivity

Frequency Primary Diversity SIMO 3GPP (SIMO)

WCDMA B2 -110.0dBm / / -104.7dBm

WCDMA B4 -110.0dBm / / -106.7dBm

WCDMA B5 -110.5dBm / / -104.7dBm

LTE FDD B2 (10M) -98.0dBm -98.0dBm -101.0dBm -94.3dBm

LTE FDD B4 (10M) -97.5dBm -99.0dBm -101.0dBm -96.3dBm

LTE FDD B12 (10M) -96.5dBm -98.0dBm -101.0dBm -93.3dBm

Table 18: EC25-J Mini PCIe Conducted RF Receiving Sensitivity

Frequency Primary Diversity SIMO 3GPP (SIMO)

WCDMA B1 -110.0dBm / / -106.7dBm

WCDMA B6 -110.5dBm / / -106.7dBm

WCDMA B8 -110.5dBm / / -106.7dBm

WCDMA B19 -110.5dBm / / -106.7dBm

LTE-FDD B1 (10M) -97.5dBm -98.7dBm -100.2dBm -96.3dBm

LTE-FDD B3 (10M) -96.5dBm -97.1dBm -100.5dBm -93.3dBm

LTE-FDD B8 (10M) -98.4dBm -99.0dBm -101.2dBm -93.3dBm

LTE-FDD B18 (10M) -99.5dBm -99.0dBm -101.7dBm -96.3dBm

LTE-FDD B19 (10M) -99.2dBm -99.0dBm -101.4dBm -96.3dBm

LTE-FDD B26 (10M) -99.5dBm -99.0dBm -101.5dBm -93.8dBm

LTE-TDD B41 (10M) -95.0dBm -95.7dBm -99.0dBm -94.3dBm

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Table 19: EC25-E Mini PCIe Conducted RF Receiving Sensitivity

Frequency Primary Diversity SIMO 3GPP (SIMO)

GSM900 -109.0dBm / / -102.0dBm

DCS1800 -109.0dBm / / -102.0dbm

WCDMA B1 -110.5dBm / / -106.7dBm

WCDMA B5 -110.5dBm / / -104.7dBm

WCDMA B8 -110.5dBm / / -103.7dBm

LTE-FDD B1 (10M) -98.0dBm -98.0dBm -101.5dBm -96.3dBm

LTE-FDD B3 (10M) -96.5dBm -98.5dBm -101.5dBm -93.3dBm

LTE-FDD B5 (10M) -98.0dBm -98.5dBm -101.0dBm -94.3dBm

LTE-FDD B7 (10M) -97.0dBm -94.5dBm -99.5dBm -94.3dBm

LTE-FDD B8 (10M) -97.0dBm -97.0dBm -101.0dBm -93.3dBm

LTE-FDD B20 (10M) -97.5dBm -99.0dBm -102.5dBm -93.3dBm

LTE-TDD B38 (10M) -96.7dBm -97.0dBm -100.0dBm -96.3dBm

LTE-TDD B40 (10M) -96.3dBm -98.0dBm -101.0dBm -96.3dBm

LTE-TDD B41 (10M) -95.2dBm -95.7dBm -99.0dBm -94.3dBm

Table 20: EC25-V Mini PCIe Conducted RF Receiving Sensitivity

Frequency Primary Diversity SIMO 3GPP (SIMO)

LTE-FDD B4 (10M) -97.5dBm -99.0dBm -101.0dBm -96.3dBm

LTE-FDD B13 (10M) -95.0dBm -97.0dBm -100.0dBm -93.3dBm

4.5. GNSS Receiver

EC25 Mini PCIe integrates a GNSS receiver that supports IZat Gen 8C Lite of Qualcomm (GPS,

GLONASS, BeiDou, Galileo, QZSS). Meanwhile, it supports Qualcomm gpsOneXTRA technology (one

kind of A-GNSS). This technology will download XTRA file from the internet server to enhance the TTFF.

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XTRA file contains predicted GPS and GLONASS satellites coordinates and clock biases valid for up to 7

days. It is best if XTRA file is downloaded every 1-2 days. Additionally, EC25 Mini PCIe can support

standard NMEA-0183 protocol and output NMEA messages with 1Hz via USB NMEA interface.

EC25 Mini PCIe GNSS engine is switched off by default. You must switch on it by AT command. Please

refer to document [3] for more details about GNSS engine technology and configurations. A passive

antenna should be used for the GNSS engine.

4.6. ESD Characteristics

The following table shows the ESD characteristics of EC25 Mini PCIe.

Table 21: ESD Characteristics of EC25 Mini PCIe

Part Contact Discharge Air Discharge Unit

Power Supply and GND +/-5 +/-10 kV

Antenna Interface +/-4 +/-8 kV

USB Interface +/-4 +/-8 kV

USIM Interface +/-4 +/-8 kV

Others +/-0.5 +/-1 kV

4.7. Current Consumption

The following tables describe the current consumption of EC25 Mini PCIe series module.

Table 22: Current Consumption of EC25-A Mini PCIe

Parameter Description Conditions Typ. Unit

AT+CFUN=0 (USB disconnected)

3.6 mA

WCDMA PF=64 (USB disconnected) 4.4 mA

VBAT

Sleep state

WCDMA PF=128 (USB disconnected) 3.8 mA

LTE-FDD PF=64 (USB disconnected) 5.9 mA

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LTE-FDD PF=128 (USB disconnected) 4.8 mA

WCDMA PF=64 (USB disconnected) 27.0 mA

WCDMA PF=64 (USB connected) 40.0 mA

Idle state

LTE-FDD PF=64 (USB disconnected) 43.0 mA

LTE-FDD PF=64 (USB connected) 59.0 mA

WCDMA B2 HSDPA @22.63dBm 764.0 mA

WCDMA B2 HSUPA @23.19dBm 741.0 mA

WCDMA data

WCDMA B4 HSDPA @22.45dBm 745.0 mA

transfer

(GNSS OFF)

WCDMA B4 HSUPA @22.57dBm 752.0 mA

WCDMA B5 HSDPA @22.49dBm 616.0 mA

WCDMA B5 HSUPA @22.43dBm 637.0 mA

LTE-FDD B2 @22.92dBm 977.0 mA

LTE data

transfer

LTE-FDD B4 @23.42dBm 1094.0 mA

(GNSS OFF)

LTE-FDD B12 @23.39dBm 847.0 mA

WCDMA B2 @23.59dBm 861.0 mA

WCDMA

voice call

WCDMA B4 @23.47dBm 812.0 mA

WCDMA B5 @23.46dBm 683.0 mA

Table 23: Current Consumption of EC25-E Mini PCIe

Parameter Description Conditions Typ. Unit

AT+CFUN=0 (USB disconnected)

3.9 mA

GSM DRX=2 (USB disconnected) 5.1 mA

GSM DRX=9 (USB disconnected) 4.3 mA

VBAT

Sleep state

WCDMA PF=64 (USB disconnected) 5.5 mA

WCDMA PF=128 (USB disconnected) 4.8 mA

LTE-FDD PF=64 (USB disconnected) 5.8 mA

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LTE-FDD PF=128 (USB disconnected) 5.0 mA

LTE-TDD PF=64 (USB disconnected) 5.8 mA

LTE-TDD PF=128 (USB disconnected) 4.9 mA

GSM DRX=5 (USB disconnected) 30.0 mA

GSM DRX=5 (USB connected) 43.0 mA

WCDMA PF=64 (USB disconnected) 31.0 mA

WCDMA PF=64 (USB connected) 45.0 mA

Idle state

LTE-FDD PF=64 (USB disconnected) 31.0 mA

LTE-FDD PF=64 (USB connected) 44.0 mA

GPRS data

transfer

(GNSS OFF)

LTE-TDD PF=64 (USB disconnected) 32.0 mA

LTE-TDD PF=64 (USB connected) 44.0 mA

GSM900 4DL/1UL @33.08dBm 372.0 mA

GSM900 3DL/2UL @31.03dBm 626.0 mA

GSM900 2DL/3UL @29.86dBm 706.0 mA

GSM900 1DL/4UL @29.44dBm 767.0 mA

DCS1800 4DL/1UL @30.39dBm 262.0 mA

DCS1800 3DL/2UL @30.19dBm 417.0 mA

DCS1800 2DL/3UL @30.02dBm 564.0 mA

DCS1800 1DL/4UL @29.86dBm 709.0 mA

GSM900 4DL/1UL @27.59dBm 233.0 mA

GSM900 3DL/2UL @27.45dBm 370.0 mA

EDGE data

GSM900 2DL/3UL @27.31dBm 500.0 mA

transfer

(GNSS OFF)

GSM900 1DL/4UL @27.14dBm 623.0 mA

DCS1800 4DL/1UL @26.24dBm 224.0 mA

DCS1800 3DL/2UL @26.13dBm 334.0 mA

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DCS1800 2DL/3UL @25.97dBm 440.0 mA

DCS1800 1DL/4UL @25.82dBm 553.0 mA

WCDMA B1 HSDPA @22.49dBm 798.0 mA

WCDMA B1 HSUPA @21.87dBm 788.0 mA

WCDMA data

transfer

(GNSS OFF)

LTE data

transfer

(GNSS OFF)

WCDMA B5 HSDPA @22.66dBm 781.0 mA

WCDMA B5 HSUPA @21.99dBm 770.0 mA

WCDMA B8 HSDPA @22.23dBm 655.0 mA

WCDMA B8 HSUPA @21.68dBm 659.0 mA

LTE-FDD B1 @23.12dBm 940.0 mA

LTE-FDD B3 @22.75dBm 989.0 mA

LTE-FDD B5 @22.92dBm 962.0 mA

LTE-FDD B7 @23.42dBm 1188.0 mA

LTE-FDD B8 @22.97dBm 911.0 mA

LTE-FDD B20 @22.51dBm 946.0 mA

LTE-TDD B38 @22.58dBm 686.0 mA

LTE-TDD B40 @22.31dBm 576.0 mA

LTE-TDD B41 @22.03dBm 611.0 mA

GSM

voice call

GSM900 PCL=5 @33.31dBm 367.0 mA

DCS1800 PCL=0 @20.48dBm 248.0 mA

WCDMA B1 @23.18dBm 868.0 mA

WCDMA

voice call

WCDMA B5 @22.62dBm 808.0 mA

WCDMA B8 @23.02dBm 728.0 mA

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Table 24: Current Consumption of EC25-V Mini PCIe

Parameter Description Conditions Typ. Unit

3.4 mA

Sleep state

AT+CFUN=0 (USB disconnected)

LTE-FDD PF=64 (USB disconnected) 4.8 mA

LTE-FDD PF=128 (USB disconnected) 4.3 mA

VBAT

LTE-FDD PF=64 (USB disconnected) 30.0 mA

Idle state

LTE-FDD PF=64 (USB connected) 42.0 mA

LTE data

LTE-FDD B4 @23.3dBm 873.0 mA

transfer

(GNSS OFF)

LTE-FDD B13 @22.13dBm 638.0 mA

Table 25: GNSS Current Consumption of EC25 Mini PCIe Series Module

Parameter Description Conditions Typ. Unit

Searching

(AT+CFUN=0)

Cold start @Passive Antenna 75.0 mA

Lost state @Passive Antenna 74.0 mA

VBAT

(GNSS)

Tracking

(AT+CFUN=0)

Instrument environment 44.0 mA

Open Sky @Passive Antenna 53.0 mA

Open Sky @Active Antenna 58.0 mA

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5 Dimensions and Packaging

5.1. General Description

This chapter mainly describes mechanical dimensions as well as packaging specification of EC25 Mini

PCIe module.

5.2. Mechanical Dimensions of EC25 Mini PCIe

30.00±0.20

8.25±0.10

5.45±0.10

6.38±0.10

6.35±0.10

34.30±0.20

4.00±0.10

Pin1

24.20±0.20

3x3.00

Top View

5.98±0.10

2xΦ2.60

48.05±0.20

10.35±0.10

Pin51

0.61

2.35±0.10

4.90±0.20

50.95±0.20

1.40

9.90±0.10

7.26±0.10

1.00

Side View

Figure 15: Mechanical Dimensions of EC25 Mini PCIe (Unit: mm)

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5.3. Standard Dimensions of Mini PCI Express

The following figure shows the standard dimensions of Mini PCI Express. Please refer to document [1]

for detailed A and B.

Figure 16: Standard Dimensions of Mini PCI Express (Unit: mm)

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EC25 Mini PCIe adopts a standard Mini PCI Express connector which compiles with the directives and

standards listed in the document [1]. The following figure takes the Molex 679100002 as an example.

Figure 17: Dimensions of the Mini PCI Express Connector (Molex 679100002, Unit: mm)

5.4. Packaging Specification

The EC25 Mini PCIe is packaged in a tray. Each tray contains 10pcs of modules. The smallest package of

EC25 Mini PCIe contains 100pcs.

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6 Appendix References

Table 26: Related Documents

SN Document Name Remark

[1]

[2] Quectel_EC25&EC21_AT_Commands_Manual EC25 and EC21 AT Commands Manual

[3]

Table 27: Terms and Abbreviations

Abbreviation Description

AMR Adaptive Multi-rate

bps Bits Per Second

CS Coding Scheme

DC-HSPA+ Dual-carrier High Speed Packet Access

DFOTA Delta Firmware Upgrade Over The Air

PCI Express Mini Card Electromechanical

Specification Revision 1.2

Quectel_EC25&EC21_GNSS_AT_Commands_

Manual

Mini PCI Express Specification

EC25 and EC21 GNSS AT Commands

Manual

DL Down Link

EFR Enhanced Full Rate

ESD Electrostatic Discharge

FDD Frequency Division Duplexing

FR Full Rate

GLONASS

GMSK Gaussian Minimum Shift Keying

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GLObalnaya Navigatsionnaya Sputnikovaya Sistema, the Russian Global

Navigation Satellite System

LTE Module Series

EC25 Mini PCIe Hardware Design

GNSS Global Navigation Satellite System

GPS Global Positioning System

GSM Global System for Mobile Communications

HR Half Rate

kbps Kilo Bits Per Second

LED Light Emitting Diode

LTE Long-Term Evolution

Mbps Million Bits Per Second

ME Mobile Equipment (Module)

MIMO Multiple-Input Multiple-Output

MMS Multimedia Messaging Service

MO Mobile Originated

MT Mobile Terminated

PCM Pulse Code Modulation

PDU Protocol Data Unit

PPP Point-to-Point Protocol

RF Radio Frequency

Rx Receive

USIM Universal Subscriber Identification Module

SIMO Single Input Multiple Output

SMS Short Message Service

UART Universal Asynchronous Receiver & Transmitter

UL Up Link

URC Unsolicited Result Code

WCDMA Wideband Code Division Multiple Access

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FCC Certification Requirements.

According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a

mobile device.

And the following conditions must be met:

1. 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 source-based time-

averaging duty factor, antenna gain and cable loss must satisfy MPE categorical Exclusion Requirements

of 2.1091.

2. The EUT is a mobile device; maintain at least a 20 cm separation between the EUT and the user’s body

and must not transmit simultaneously with any other antenna or transmitter.

3.A label with the following statements must be attached to the host end product: This device contains

FCC ID: 10224A-2019EC25AFX.

4.To comply with FCC regulations limiting both maximum RF output power and human exposure to RF

radiation, maximum antenna gain (including cable loss) must not exceed:

❒ WCDMA B2/LTE B2: <8dBi

❒ WCDMA B4LTE B4/B66: <5dBi

❒ WCDMA B5/LTE B5: <6.1dBi

❒ LTE B5: <9.4dBi

❒ LTE B12: <8.73dBi

❒ LTE B13: <9.17dBi

❒ LTE B14: <9.26dBi

❒ LTE B 71: <8.55dBi

5. This module must not transmit simultaneously with any other antenna or transmitter

6. The host end product must include a user manual that clearly defines operating requirements and

conditions that must be observed to ensure compliance with current FCC RF exposure guidelines.

For portable devices, in addition to the conditions 3 through 6 described above, a separate approval is

required to satisfy the SAR requirements of FCC Part 2.1093

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If the device is used for other equipment that separate approval is required for all other operating

configurations, including portable configurations with respect to 2.1093 and different antenna

configurations.

For this device, OEM integrators must be provided with labeling instructions of finished products.

Please refer to KDB784748 D01 v07, section 8. Page 6/7 last two paragraphs:

A certified modular has the option to use a permanently affixed label, or an electronic label. For a

permanently affixed label, the module must be labeled with an FCC ID - Section 2.926 (see 2.2

Certification (labeling requirements) above). The OEM manual must provide clear instructions

explaining to the OEM the labeling requirements, options and OEM user manual instructions that are

required (see next paragraph).

For a host using a certified modular with a standard fixed label, if (1) the module’s FCC ID is not visible

when installed in the host, or (2) if the host is marketed so that end users do not have straightforward

commonly used methods for access to remove the module so that the FCC ID of the module is visible;

then an additional permanent label referring to the enclosed module:“Contains Transmitter Module FCC

ID: XMR201909EC25AFX_” or “Contains FCC ID: XMR201909EC25AFX_” must be used. The host

OEM user manual must also contain clear instructions on how end users can find and/or access the

module and the FCC ID.