EC25-V
User Manual
LTE Module Series
Rev. EC25-V_User_Manual_V1.0
Date: 2016-03-28
www.quectel.com
LTE Module Series
EC25-V User Manual
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
Mail: info@quectel.com
Or our local office, for more information, please visit:
http://www.quectel.com/support/salesupport.aspx
For technical support, to report documentation errors, please visit: http://www.quectel.com/support/techsupport.aspx
Or Email: Support@quectel.com
GENERAL NOTES
QUECTEL OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION. THE INFORMATION SUPPLIED HEREIN IS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
COPYRIGHT
THIS INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF QUECTEL CO., LTD. TRANSMITTABLE, REPRODUCTION, DISSEMINATION AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THIS CONTENTS ARE FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF DAMAGES. ALL RIGHTS ARE RESERVED IN THE EVENT OF A PATENT GRANT OR REGISTRATION OF A UTILITY MODEL OR DESIGN.
Copyright © Quectel Wireless Solutions Co., Ltd. 2016. All rights reserved.
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About the Document
History
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V1.0 |
2016-03-28 |
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Woody WU |
Initial |
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Contents
About the Document................................................................................................................................... |
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Contents |
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3 |
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Table Index................................................................................................................................................... |
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5 |
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Figure Index ................................................................................................................................................. |
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6 |
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1 |
Introduction .......................................................................................................................................... |
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7 |
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1.1. ...................................................................................................................... |
Safety Information |
7 |
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2 |
Product ..................................................................................................................................Concept |
9 |
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2.1. ................................................................................................................... |
General Description |
9 |
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2.2. ........................................................................................................ |
Directives and Standards |
10 |
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2.2.1. .............................................................................................................. |
FCC Statement |
10 |
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2.3. ........................................................................................................................... |
Key Features |
10 |
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2.4. ................................................................................................................. |
Functional Diagram |
12 |
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2.5. ..................................................................................................................... |
Evaluation Board |
13 |
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3 |
Application .........................................................................................................................Interface |
14 |
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3.1. ................................................................................................................. |
General Description |
14 |
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3.2. ........................................................................................................................ |
Pin Assignment |
14 |
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3.3. ......................................................................................................................... |
Pin Description |
16 |
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3.4. ..................................................................................................................... |
Operating Modes |
21 |
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3.5. ........................................................................................................................... |
Power Saving |
22 |
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3.5.1. .................................................................................................................... |
Sleep Mode |
22 |
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3.5.1.1. UART Application |
22 |
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........................................ |
3.5.1.2. USB Application with USB Remote Wakeup Function |
23 |
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.......................... |
3.5.1.3. USB Application with USB Suspend/Resume and RI Function |
23 |
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3.5.1.4. USB Application without USB Suspend Function |
24 |
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3.5.2. ................................................................................................................ |
Airplane Mode |
25 |
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3.6. ........................................................................................................................... |
Power Supply |
25 |
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3.6.1. ......................................................................................................... |
Power Supply Pins |
25 |
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3.6.2. .................................................................................................. |
Decrease Voltage Drop |
26 |
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3.6.3. ..............................................................................Reference Design for Power Supply |
27 |
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3.6.4. ..............................................................................................Monitor the Power Supply |
28 |
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3.7. ....................................................................................................... |
Turn on and off Scenarios |
28 |
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3.7.1. .............................................................................Turn on Module Using the PWRKEY |
28 |
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3.7.2. .............................................................................................................. |
Turn off Module |
30 |
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3.7.2.1. Turn off Module Using the PWRKEY Pin |
30 |
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3.7.2.2. Turn off Module Using AT Command |
30 |
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3.8. ..................................................................................................................... |
Reset the Module |
30 |
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3.9. ................................................................................................................ |
USIM Card Interface |
32 |
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3.10. .......................................................................................................................... |
USB Interface |
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3.11. |
UART Interface ........................................................................................................................ |
36 |
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3.12. |
PCM and I2C Interface ............................................................................................................ |
38 |
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3.13. |
ADC Function .......................................................................................................................... |
41 |
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3.14. |
Network Status Indication........................................................................................................ |
41 |
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3.15. |
STATUS ................................................................................................................................... |
42 |
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3.16. |
Behavior of the RI.................................................................................................................... |
43 |
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4 |
GNSS Receiver................................................................................................................................... |
45 |
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4.1. |
General Description................................................................................................................. |
45 |
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4.2. |
GNSS Performance................................................................................................................. |
45 |
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4.3. |
Layout Guideline...................................................................................................................... |
46 |
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5 |
Antenna Interface............................................................................................................................... |
47 |
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5.1. |
Main/Rx-diversity Antenna Interface........................................................................................ |
47 |
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5.1.1. |
Pin Definition .................................................................................................................. |
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5.1.2. |
Operating Frequency ..................................................................................................... |
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5.1.3. |
Reference Design .......................................................................................................... |
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5.2. |
GNSS Antenna Interface ......................................................................................................... |
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5.3. |
Antenna Installation ................................................................................................................. |
49 |
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5.3.1. |
Antenna Requirement .................................................................................................... |
49 |
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5.3.2. Install the Antenna with RF Connector .......................................................................... |
50 |
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6 Electrical, Reliability and Radio Characteristics ............................................................................ |
53 |
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6.1. |
Absolute Maximum Ratings..................................................................................................... |
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6.2. |
Power Supply Ratings ............................................................................................................. |
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6.3. |
Operating Temperature............................................................................................................ |
54 |
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6.4. |
Current Consumption .............................................................................................................. |
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6.5. |
RF Output Power..................................................................................................................... |
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6.6. |
RF Receiving Sensitivity.......................................................................................................... |
55 |
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6.7. |
Electrostatic Discharge............................................................................................................ |
55 |
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7 |
Mechanical Dimensions .................................................................................................................... |
56 |
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7.1. |
Mechanical Dimensions of the Module.................................................................................... |
56 |
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7.2. |
Footprint of Recommendation ................................................................................................. |
58 |
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7.3. |
Top View of the Module ........................................................................................................... |
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7.4. |
Bottom View of the Module...................................................................................................... |
59 |
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8 |
Storage and Manufacturing .............................................................................................................. |
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8.1. |
Storage .................................................................................................................................... |
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8.2. |
Manufacturing and Welding..................................................................................................... |
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8.3. |
Packaging ................................................................................................................................ |
61 |
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9 |
Appendix A Reference....................................................................................................................... |
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Table Index |
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TABLE 1: EC25 SERIES FREQUENCY BANDS ................................................................................................ |
9 |
TABLE 2: EC25 KEY FEATURES ..................................................................................................................... |
10 |
TABLE 3: IO PARAMETERS DEFINITION........................................................................................................ |
16 |
TABLE 4: PIN DESCRIPTION........................................................................................................................... |
16 |
TABLE 5: OVERVIEW OF OPERATING MODES............................................................................................. |
21 |
TABLE 6: VBAT AND GND PINS....................................................................................................................... |
26 |
TABLE 7: PWRKEY PIN DESCRIPTION .......................................................................................................... |
28 |
TABLE 8: RESET_N PIN DESCRIPTION ......................................................................................................... |
31 |
TABLE 9: PIN DEFINITION OF THE USIM INTERFACE ................................................................................. |
32 |
TABLE 10: USB PIN DESCRIPTION ................................................................................................................ |
34 |
TABLE 11: PIN DEFINITION OF THE MAIN UART INTERFACE ..................................................................... |
36 |
TABLE 12: PIN DEFINITION OF THE DEBUG UART INTERFACE................................................................. |
36 |
TABLE 13: LOGIC LEVELS OF DIGITAL I/O .................................................................................................... |
37 |
TABLE 14: PIN DEFINITION OF PCM AND I2C INTERFACE.......................................................................... |
39 |
TABLE 15: PIN DEFINITION OF THE ADC ...................................................................................................... |
41 |
TABLE 16: CHARACTERISTIC OF THE ADC .................................................................................................. |
41 |
TABLE 17: PIN DEFINITION OF NETWORK INDICATOR............................................................................... |
41 |
TABLE 18: WORKING STATE OF THE NETWORK INDICATOR..................................................................... |
42 |
TABLE 19: PIN DEFINITION OF STATUS ........................................................................................................ |
43 |
TABLE 20: BEHAVIOR OF THE RI ................................................................................................................... |
44 |
TABLE 21: GNSS PERFORMANCE ................................................................................................................. |
45 |
TABLE 22: PIN DEFINITION OF THE RF ANTENNA ....................................................................................... |
47 |
TABLE 23: THE MODULE OPERATING FREQUENCIES................................................................................ |
47 |
TABLE 24: PIN DEFINITION OF GNSS ANTENNA.......................................................................................... |
48 |
TABLE 25: GNSS FREQUENCY....................................................................................................................... |
49 |
TABLE 26: ANTENNA REQUIREMENTS.......................................................................................................... |
49 |
TABLE 27: ABSOLUTE MAXIMUM RATINGS .................................................................................................. |
53 |
TABLE 28: THE MODULE POWER SUPPLY RATINGS .................................................................................. |
53 |
TABLE 29: OPERATING TEMPERATURE........................................................................................................ |
54 |
TABLE 30: CONDUCTED RF OUTPUT POWER ............................................................................................. |
55 |
TABLE 31: ELECTROSTATICS DISCHARGE CHARACTERISTICS ............................................................... |
55 |
TABLE 32: RELATED DOCUMENTS................................................................................................................ |
63 |
TABLE 33: TERMS AND ABBREVIATIONS...................................................................................................... |
63 |
TABLE 34: DESCRIPTION OF DIFFERENT CODING SCHEMES .................................................................. |
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Figure Index |
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FIGURE 1: FUNCTIONAL DIAGRAM........................................................................................................ |
12 |
FIGURE 2: PIN ASSIGNMENT (TOP VIEW)............................................................................................. |
15 |
FIGURE 3: UART SLEEP APPLICATION.................................................................................................. |
22 |
FIGURE 4: SLEEP APPLICATION WITH USB REMOTE WAKEUP ........................................................ |
23 |
FIGURE 5: SLEEP APPLICATION WITH RI ............................................................................................. |
24 |
FIGURE 6: SLEEP APPLICATION WITHOUT SUSPEND FUNCTION .................................................... |
24 |
FIGURE 7: POWER SUPPLY LIMITS DURING TRANSMIT BURST ....................................................... |
26 |
FIGURE 8: STAR STRUCTURE OF THE POWER SUPPLY.................................................................... |
27 |
FIGURE 9: REFERENCE CIRCUIT OF POWER SUPPLY....................................................................... |
27 |
FIGURE 10: TURN ON THE MODULE USING DRIVING CIRCUIT......................................................... |
28 |
FIGURE 11: TURN ON THE MODULE USING KEYSTROKE.................................................................. |
29 |
FIGURE 12: TIMING OF TURNING ON MODULE ................................................................................... |
29 |
FIGURE 13: TIMING OF TURNING OFF MODULE.................................................................................. |
30 |
FIGURE 14: REFERENCE CIRCUIT OF RESET_N BY USING DRIVING CIRCUIT .............................. |
31 |
FIGURE 15: REFERENCE CIRCUIT OF RESET_N BY USING BUTTON .............................................. |
31 |
FIGURE 16: TIMING OF RESETTING MODULE...................................................................................... |
32 |
FIGURE 17: REFERENCE CIRCUIT OF 8-PIN USIM CONNECTOR...................................................... |
33 |
FIGURE 18: REFERENCE CIRCUIT OF 6-PIN USIM CONNECTOR...................................................... |
33 |
FIGURE 19: REFERENCE CIRCUIT OF USB APPLICATION ................................................................. |
35 |
FIGURE 20: REFERENCE CIRCUIT WITH TRANSLATOR CHIP............................................................ |
37 |
FIGURE 21: REFERENCE CIRCUIT WITH TRANSISTOR CIRCUIT ...................................................... |
38 |
FIGURE 22: PRIMARY MODE TIMING..................................................................................................... |
39 |
FIGURE 23: AUXILIARY MODE TIMING................................................................................................... |
39 |
FIGURE 24: REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC ............................ |
40 |
FIGURE 25: REFERENCE CIRCUIT OF THE NETWORK INDICATOR.................................................. |
42 |
FIGURE 26: REFERENCE CIRCUIT OF THE STATUS............................................................................ |
43 |
FIGURE 27: REFERENCE CIRCUIT OF ANTENNA INTERFACE ........................................................... |
48 |
FIGURE 28: REFERENCE CIRCUIT OF GNSS ANTENNA ..................................................................... |
49 |
FIGURE 29: DIMENSIONS OF THE UF.L-R-SMT CONNECTOR (UNIT: MM) ........................................ |
50 |
FIGURE 30: MECHANICALS OF UF.L-LP CONNECTORS ..................................................................... |
51 |
FIGURE 31: SPACE FACTOR OF MATED CONNECTOR (UNIT: MM) ................................................... |
52 |
FIGURE 32: MODULE TOP AND SIDE DIMENSIONS............................................................................. |
56 |
FIGURE 33: MODULE BOTTOM DIMENSIONS (BOTTOM VIEW) ......................................................... |
57 |
FIGURE 34: RECOMMENDED FOOTPRINT (TOP VIEW) ...................................................................... |
58 |
FIGURE 35: TOP VIEW OF THE MODULE .............................................................................................. |
59 |
FIGURE 36: BOTTOM VIEW OF THE MODULE ...................................................................................... |
59 |
FIGURE 37: LIQUIDS TEMPERATURE .................................................................................................... |
61 |
FIGURE 38: CARRIER TAPE .................................................................................................................... |
62 |
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EC25-V User Manual
1 Introduction
This document defines the EC25 module and describes its air interface and hardware interface which are connected with your application.
This document can help you quickly understand module interface specifications, electrical and mechanical details, as well as other related information of EC25 module. Associated with application notes and user guide, you can use EC25 module to design and set up mobile applications easily.
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 module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel and to incorporate these guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for the customer’s 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 a 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 sentitive medical equipment.
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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 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 potencially explosive atmospheres, obey all posted signs to turn off wireless devices such as your phone or other cellular terminals. Areas with potencially 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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2 Product Concept
2.1. General Description
EC25 contains four variants: EC25-E, EC25-A, EC25-V and EC25-AUT. You can choose the dedicated type based on the region or operator. The following table shows the frequency bands of EC25 series modules.
Table 1: EC25 Series Frequency Bands
EC25-V
FDD-LTE |
B4/B13 |
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(with Rx-diversity) |
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TDD-LTE |
Not supported |
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(with Rx-diversity) |
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WCDMA |
Not supported |
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(with Rx-diversity) |
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GSM |
Not supported |
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GNSS |
GPS,GLONASS, |
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BeiDou/Compass,Galileo,QZSS |
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NOTES
1. 1) GNSS function is optional.
2. 2) EC25-V includes Data-only and Telematics versions. Data-only version does not support voice function, while Telematics version supports it.
With a tiny profile of 32.0mm × 29.0mm × 2.4mm, EC25 can meet almost all requirements for M2M applications such as automotive, metering, tracking system, security, router, wireless POS, mobile computing device, PDA phone and tablet PC, etc.
EC25 is an SMD type module which can be embedded in applications through its 144-pin pads, including 80 LCC signal pads and 64 other pads.
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2.2. Directives and Standards
2.2.1. FCC Statement
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
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.
2.3. Key Features
The following table describes the detailed features of EC25 module.
Table 2: EC25 Key Features
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Feature |
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Details |
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Power Supply |
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Supply voltage: 3.3V~4.3V |
Typical supply voltage: 3.8V |
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Support up to non-CA CAT4 |
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Transmitting Power |
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Support 1.4 to 20MHz RF bandwidth |
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FDD: Max 50Mbps (UL), 150Mbps (DL) |
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TDD: Max 35Mbps (UL), 130Mbps (DL) |
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Support 16-QAM, 64-QAM and QPSK modulation |
Text and PDU mode
Internet Protocol Features Point to point MO and MT
SMS cell broadcast
SMS storage: ME by default
SMS |
Support USIM/SIM card: 1.8V, 3.0V |
Used for audio function with external codec
USIM Interface Support 8-bit A-law, μ-law and 16-bit linear data formats Support long frame sync and short frame sync
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Support master and slave mode, but must be the master in long frame sync
Compliant with USB 2.0 specification (slave only); the data transfer rate
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can reach up to 480Mbps |
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Audio Features |
Used for AT command communication, data transmission, GNSS NMEA |
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output, software debug and firmware upgrade |
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USB Driver: Windows XP, Windows Vista, Windows 7, Windows 8/8.1, |
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Window CE 5.0/6.0/7.0, Linux 2.6 or later, Android 2.3/4.0/4.2/4.4/5.0 |
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Main UART: |
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Used for AT command and data transmission |
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Baud rate reach up to 921600bps, 115200bps by default |
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PCM Interface |
Support RTS and CTS hardware flow control |
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Debug UART: |
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Used for Linux console, log output |
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115200bps baud rate |
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USB Interface |
Support LTE Rx-diversity |
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UART Interface |
Gen8C-Lite of Qualcomm |
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Protocol: NMEA 0183 |
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GNSS Features |
Two pins including NET_MODE and NET_STATUS to indicate network |
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connectivity status |
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AT Commands |
Including main antenna (ANT_MAIN), Rx-diversity antenna (ANT_DIV) and |
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GNSS antenna (ANT_GNSS) |
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Network Indication |
Size: 32.0±0.15 × 29.0±0.15 × 2.4±0.2mm |
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Weight: approx. 4.9g |
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Normal operation: -35°C ~ +75°C |
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Antenna Interface |
Restricted operation: -40°C ~ -35°C and +75°C ~ +85°C |
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Storage temperature: -45°C ~ +90°C |
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Physical Characteristics |
USB interface |
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Temperature Range |
All hardware components are fully compliant with EU RoHS directive |
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Firmware Upgrade |
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RoHS |
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EC25-V User Manual
2.4. Functional Diagram
The following figure shows a block diagram of EC25 and illustrates the major functional parts.
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Power management |
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Baseband |
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DDR+NAND flash |
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Radio frequency |
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Peripheral interface |
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ANT_MAIN |
ANT_GNSS |
ANT_DIV |
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Switch |
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SAW |
Switch |
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Duplex |
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LNA |
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VBAT_RF |
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SAW |
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PA |
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APT |
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PRx |
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DRx |
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Tx |
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Transceiver |
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NAND |
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DDR2 |
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SDRAM |
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IQ |
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Control |
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VBAT_BB |
PMIC |
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Control |
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PWRKEY |
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Baseband |
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RESET_N |
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ADCs |
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STATUS |
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19.2M |
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XO |
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VDD_EXT |
USB |
USIM |
PCM |
I2C |
UART |
GPIOs |
Figure 1: Functional Diagram
EC25-V_User_Manual |
Confidential / Released |
12 / |
69 |
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LTE Module Series
EC25-V User Manual
2.5. Evaluation Board
In order to help you to develop applications with EC25, Quectel supplies an evaluation board (EVB), USB data cable, earphone, antenna and other peripherals to control or test the module.
EC25-V_User_Manual |
Confidential / Released |
13 / |
69 |
|
|
LTE Module Series
EC25-V User Manual
3 Application Interface
3.1. General Description
EC25 is equipped with an 80-pin SMT pad plus 64-pin ground pads and reserved pads that can be connected to cellular application platform. Sub-interfaces included in these pads are described in detail in the following chapters:
Power supply
USIM interface
USB interface
UART interface
PCM interface
ADC interface
Status indication
3.2. Pin Assignment
The following figure shows the pin assignment of the EC25 module.
EC25-V_User_Manual |
Confidential / Released |
14 / |
69 |
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LTE Module Series
EC25-V User Manual
WAKEUP_IN 1
AP_READY 2
RESERVED 3 W_DISABLE# 4
NET_MODE 5
NET_STATUS 6 VDD_EXT 7
RESERVED 141
RESERVED 142
GND 8
GND 9
USIM_GND 10
DBG_RXD 11
DBG_TXD 12
USIM_PRESENCE 13
USIM_VDD 14
USIM_DATA 15
USIM_CLK 16
USIM_RST 17
RESERVED 18
RESERVED |
RESERVED |
GND |
VBUS USB |
DM USB |
DP USB |
RXD |
TXD |
DTR |
RTS |
CTS |
DCD |
RI |
STATUS |
BB VBAT |
BB VBAT |
RF VBAT |
RF VBAT |
GND |
RESERVED |
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114 |
113 |
72 |
71 |
70 |
69 |
68 |
67 |
66 |
65 |
64 |
63 |
62 |
61 |
60 |
59 |
58 |
57 |
56 |
55 |
GND |
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54 |
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129 |
117 |
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53 |
GND |
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52 |
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108 |
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103 |
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99 |
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95 |
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90 |
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85 |
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GND |
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130 |
118 |
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51 |
GND |
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131 |
119 |
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50 |
GND |
132 |
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49 |
ANT_MAIN |
120 |
109 |
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104 |
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100 |
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96 |
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91 |
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86 |
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48 |
GND |
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133 |
121 |
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144 |
RESERVED |
134 |
122 |
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82 |
79 |
76 |
73 |
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143 |
RESERVED |
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110 |
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105 |
83 |
80 |
77 |
74 |
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92 |
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87 |
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47 |
ANT_GNSS |
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135 |
123 |
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84 |
81 |
78 |
75 |
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46 |
GND |
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136 |
124 |
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45 |
ADC0 |
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44 |
ADC1 |
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111 |
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106 |
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101 |
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97 |
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93 |
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88 |
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137 |
125 |
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43 |
RESERVED |
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I2C_SDA |
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138 |
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126 |
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I2C_SCL |
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98 |
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94 |
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89 |
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139 |
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127 |
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112 |
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107 |
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102 |
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40 |
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RESERVED |
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RESERVED |
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39 |
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140 |
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128 |
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RESERVED |
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RESERVED |
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116 |
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115 |
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
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25 |
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26 |
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27 |
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28 |
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29 |
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30 |
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31 |
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32 |
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33 |
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34 |
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35 |
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36 |
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RESERVED |
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RESERVED |
GND |
N RESET |
PWRKEY |
GND |
RESERVED |
IN PCM |
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OUT PCM |
SYNC PCM |
CLK PCM |
RESERVED |
RESERVED |
RESERVED |
RESERVED |
RESERVED |
RESERVED |
RESERVED |
DIV ANT |
GND |
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Power Pins |
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GND Pins |
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Signal Pins |
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RESERVED Pins |
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Figure 2: Pin Assignment (Top View)
NOTES
1.Keep all RESERVED pins and unused pins unconnected.
2.GND pads 85~112 should be connected to ground in the design, and RESERVED pads 73~84 should not be designed in schematic and PCB decal.
3.“ ” means these interface functions are only supported on Telematics version.
EC25-V_User_Manual |
Confidential / Released |
15 / |
69 |
|
|
LTE Module Series
EC25-V User Manual
3.3. Pin Description
The following tables show the EC25’s pin definition.
Table 3: IO Parameters Definition
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Type |
Description |
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IO |
Bidirectional input/output |
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DI |
Digital input |
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DO |
Digital output |
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PI |
Power input |
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PO |
Power output |
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AI |
Analog input |
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AO |
Analog output |
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OD |
Open drain |
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Table 4: Pin Description
Power Supply
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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Power supply for |
Vmax=4.3V |
It must be able to |
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VBAT_BB |
59, 60 |
PI |
module baseband |
Vmin=3.3V |
provide sufficient |
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part. |
Vnorm=3.8V |
current up to 0.8A. |
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Vmax=4.3V |
It must be able to |
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Power supply for |
provide sufficient |
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VBAT_RF |
57, 58 |
PI |
Vmin=3.3V |
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module RF part. |
current up to 1.8A in a |
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Vnorm=3.8V |
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transmitting burst. |
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Provide 1.8V for |
Vnorm=1.8V |
Power supply for |
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VDD_EXT |
7 |
PO |
external GPIO’s pull up |
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external circuit. |
IOmax=50mA |
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circuits. |
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8, 9, 19, |
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GND |
22, 36, 46, |
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Ground. |
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48, 50~54, |
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56, 72, |
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EC25-V_User_Manual |
|
Confidential / Released |
16 / |
|
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69 |
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LTE Module Series |
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EC25-V User Manual |
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85~112 |
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Turn on/off |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
||
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Turn on/off the |
VIHmax=2.1V |
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PWRKEY |
21 |
DI |
VIHmin=1.3V |
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module. |
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VILmax=0.5V |
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VIHmax=2.1V |
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RESET_N |
20 |
DI |
Reset the module. |
VIHmin=1.3V |
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VILmax=0.5V |
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Status Indication |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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Indicate the module |
The drive current |
Require external |
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STATUS |
61 |
OD |
should be less than |
pull-up. If unused, |
|||
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operating status. |
|||||||
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0.9mA. |
keep it open. |
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Indicate the module |
VOHmin=1.35V |
1.8V power domain. |
|
|
NET_MODE |
5 |
DO |
network registration |
If unused, keep it |
|||
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VOLmax=0.45V |
|||||||
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mode. |
open. |
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|||
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NET_ |
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Indicate the module |
VOHmin=1.35V |
1.8V power domain. |
||
|
6 |
DO |
network activity |
If unused, keep it |
||||
|
STATUS |
VOLmax=0.45V |
||||||
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status. |
open. |
||||
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USB Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
||
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USB_VBUS |
71 |
PI |
USB detection. |
Vnorm=5.0V |
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USB differential data |
Compliant with USB |
Require differential |
|
|
USB_DP |
69 |
IO |
2.0 standard |
||||
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|
bus. |
specification. |
impedance of 90ohm. |
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USB differential data |
Compliant with USB |
Require differential |
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USB_DM |
70 |
IO |
2.0 standard |
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bus. |
specification. |
impedance of 90ohm. |
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USIM Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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USIM_GND |
10 |
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Specified ground for |
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USIM card. |
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Power supply for |
For 1.8V USIM: |
Either 1.8V or 3V is |
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USIM_VDD |
14 |
PO |
Vmax=1.9V |
supported by the |
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USIM card. |
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Vmin=1.7V |
module automatically. |
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EC25-V_User_Manual |
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Confidential / Released |
17 / |
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69 |
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LTE Module Series
EC25-V User Manual
For 3.0V USIM:
Vmax=3.05V
Vmin=2.7V
IOmax=50mA
For 1.8V USIM:
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VILmax=0.6V |
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VIHmin=1.2V |
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VOLmax=0.45V |
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Data signal of USIM |
VOHmin=1.35V |
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USIM_DATA |
15 |
IO |
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card. |
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For 3.0V USIM: |
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VILmax=1.0V |
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VIHmin=1.95V |
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VOLmax=0.45V |
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VOHmin=2.55V |
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For 1.8V USIM: |
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VOLmax=0.45V |
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USIM_CLK |
16 |
DO |
Clock signal of USIM |
VOHmin=1.35V |
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card. |
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For 3.0V USIM: |
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VOLmax=0.45V |
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VOHmin=2.55V |
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For 1.8V USIM: |
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VOLmax=0.45V |
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Reset signal of |
VOHmin=1.35V |
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USIM_RST |
17 |
DO |
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USIM card. |
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For 3.0V USIM: |
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VOLmax=0.45V |
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VOHmin=2.55V |
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VILmin=-0.3V |
1.8V power domain. |
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USIM_ |
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USIM card insertion |
VILmax=0.6V |
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13 |
DI |
If unused, keep it |
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PRESENCE |
detection. |
VIHmin=1.2V |
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open. |
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VIHmax=2.0V |
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UART Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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VOLmax=0.45V |
1.8V power domain. |
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RI |
62 |
DO |
Ring indicator |
If unused, keep it |
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VOHmin=1.35V |
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open. |
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Data carrier |
VOLmax=0.45V |
1.8V power domain. |
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DCD |
63 |
DO |
If unused, keep it |
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detection. |
VOHmin=1.35V |
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open. |
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EC25-V_User_Manual |
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Confidential / Released |
18 / |
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69 |
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LTE Module Series |
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EC25-V User Manual |
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VOLmax=0.45V |
1.8V power domain. |
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CTS |
64 |
DO |
Clear to send. |
If unused, keep it |
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VOHmin=1.35V |
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open. |
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VILmin=-0.3V |
1.8V power domain. |
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VILmax=0.6V |
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RTS |
65 |
DI |
Request to send. |
If unused, keep it |
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VIHmin=1.2V |
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open. |
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VIHmax=2.0V |
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1.8V power domain. |
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VILmin=-0.3V |
Pull-up by default. |
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DTR |
66 |
DI |
Data terminal ready, |
VILmax=0.6V |
Low level wakes up |
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sleep mode control. |
VIHmin=1.2V |
the module. |
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VIHmax=2.0V |
If unused, keep it |
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open. |
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VOLmax=0.45V |
1.8V power domain. |
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TXD |
67 |
DO |
Transmit data. |
If unused, keep it |
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VOHmin=1.35V |
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open. |
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VILmin=-0.3V |
1.8V power domain. |
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VILmax=0.6V |
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RXD |
68 |
DI |
Receive data. |
If unused, keep it |
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VIHmin=1.2V |
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open. |
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VIHmax=2.0V |
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Debug UART Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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VOLmax=0.45V |
1.8V power domain. |
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DBG_TXD |
12 |
DO |
Transmit data. |
If unused, keep it |
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VOHmin=1.35V |
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open. |
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VILmin=-0.3V |
1.8V power domain. |
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VILmax=0.6V |
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DBG_RXD |
11 |
DI |
Receive data. |
If unused, keep it |
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VIHmin=1.2V |
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open. |
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VIHmax=2.0V |
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ADC Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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General purpose |
Voltage range: |
If unused, keep it |
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ADC0 |
45 |
AI |
analog to digital |
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0.3V to VBAT_BB |
open. |
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converter. |
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General purpose |
Voltage range: |
If unused, keep it |
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ADC1 |
44 |
AI |
analog to digital |
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0.3V to VBAT_BB |
open. |
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converter. |
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PCM Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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EC25-V_User_Manual |
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Confidential / Released |
19 / |
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69 |
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LTE Module Series |
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EC25-V User Manual |
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VILmin=-0.3V |
1.8V power domain. |
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VILmax=0.6V |
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PCM_IN |
24 |
DI |
PCM data input. |
If unused, keep it |
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VIHmin=1.2V |
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open. |
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VIHmax=2.0V |
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VOLmax=0.45V |
1.8V power domain. |
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PCM_OUT |
25 |
DO |
PCM data output. |
If unused, keep it |
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VOHmin=1.35V |
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open. |
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VOLmax=0.45V |
1.8V power domain. |
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VOHmin=1.35V |
In master mode, it is |
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PCM data frame |
VILmin=-0.3V |
an output signal. In |
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PCM_SYNC |
26 |
IO |
slave mode, it is an |
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sync signal. |
VILmax=0.6V |
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input signal. |
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VIHmin=1.2V |
If unused, keep it |
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VIHmax=2.0V |
open. |
VOLmax=0.45V
VOHmin=1.35V
PCM_CLK 27 IO PCM clock. VILmin=-0.3V VILmax=0.6V
VIHmin=1.2V
VIHmax=2.0V
1.8V power domain. In master mode, it is an output signal. In slave mode, it is an input signal.
If unused, keep it open.
I2C Interface
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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I2C serial clock. |
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External pull-up |
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resistor is required. |
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I2C_SCL |
41 |
OD |
Used for external |
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1.8V only. If unused, |
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codec. |
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keep it open. |
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I2C serial data. |
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External pull-up |
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resistor is required. |
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I2C_SDA |
42 |
OD |
Used for external |
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1.8V only. If unused, |
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codec. |
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keep it open. |
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RF Interface |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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ANT_DIV |
35 |
AI |
Diversity antenna. |
50ohm impedance. |
If unused, keep it |
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open. |
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ANT_MAIN |
49 |
IO |
Main antenna. |
50ohm impedance. |
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ANT_GNSS |
47 |
AI |
GNSS antenna. |
50ohm impedance. |
If unused, keep it |
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open. |
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GPIO Pins |
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Pin Name |
Pin No. |
I/O |
Description |
DC Characteristics |
Comment |
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EC25-V_User_Manual |
|
Confidential / Released |
20 / |
|
|||
69 |
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