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Quectel SC20-AD Manual

Quectel SC20-AD Manual

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SC20-AD
Manual
LTE Module Series
Rev: SC20-AD_Manual_R1.0
Date: 2021-12-14
www.quectel.com

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  • Page 1 SC20-AD Manual LTE Module Series Rev: SC20-AD_Manual_R1.0 Date: 2021-12-14 www.quectel.com...
  • Page 2 QUECTEL OFFERS THE 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.

  • Page 3: About The Document

    About the Document History Revision Date Author Description 2021-12-14 Winston SC20-AD_Manual_R1.0 SC20-A_Manual_R1.0 Confidential / Released 2 / 57...

  • Page 4: Table Of Contents

    Contents About the Document ........................... 2 Contents ............................... 3 Introduction ............................5 1.1. Safety Information........................7 Product Concept ..........................9 2.1. General Description ........................9 2.2. Key Features ........................... 10 2.3. Functional Diagram ......................... 12 2.4. Evaluation Board ........................13 Application Interfaces ........................
  • Page 5 8.1. Mechanical Dimensions of the Module..................37 8.2. Recommended Footprint ......................39 8.3. Top and Bottom View of the Module ..................40 Storage, Manufacturing and Packaging ..................41 9.1. Storage ............................ 41 9.2. Manufacturing and Welding ..................... 41 9.3. Packaging ..........................43 10 Appendix A GPRS Coding Schemes ....................

  • Page 6: Introduction

    Introduction This document defines the SC20 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 SC20 module. Associated with application notes and user guide, you can use SC20 module to design and set up mobile applications easily.
  • Page 7 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).

  • Page 8: Safety Information

    If not so, Quectel assumes no liability for the customer’s failure to comply with these precautions.
  • Page 9 Switch off your wireless device when in hospitals or clinics or other health care facilities. These requests are desinged to prevent possible interference with sentitive 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 SIM card.

  • Page 10: Product Concept

    GPIO interfaces. The following table shows the supported network types and frequency bands of SC20. Including a series of product such as:SC20-CE,SC20-A,SC20-AU,SC20-E,SC20-J. Table 1: SC20-AD/SC20-ALD Frequency Bands Type Frequency LTE-FDD...

  • Page 11: Key Features

    QDSP6 v5 core up to 691.2 MHz Modem DSP 768KB L2 cache Memory 8GB EMMC+8Gb LPDDR3 Operating System Android OS 7.1.2(SC20-AD)/Linux YOCTO(SC20-ALD) Supply voltage: 3.5V~4.2V Power Supply Typical supply voltage: 3.8V Class 4 (33dBm± 2dB) for EGSM900 Class 1 (30dBm± 2dB) for DCS1800 Class E2 (27dBm±...
  • Page 12 Text and PDU mode Point to point MO and MT SMS cell broadcast SMS storage: ME by default Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT AT Commands commands 4 lanes MIPI_DSI, up to 1.5Gbps each LCM Interface...

  • Page 13: Functional Diagram

    I2C Interface 3 groups I2C, used for TP, camera, sensor peripherals, etc. Support 3 ADC interfaces,used for input voltage sense, battery ADC Interface temperature detection and general purpose ADC Real Time Clock Implemented Antenna Interface MAIN antenna, DRX antenna, GNSS antenna and Wi-Fi/BT antenna Size: 40.5±...

  • Page 14: Evaluation Board

    Figure 1: Functional Diagram 2.4. Evaluation Board In order to help you to develop applications with SC20, Quectel supplies an evaluation board (SMART-EVB), RS-232 to USB cable, USB data cable, power adapter, earphone, antenna and other peripherals to control or test the module. For details, please refer to document [1].

  • Page 15: Application Interfaces

    Application Interfaces 3.1. General Description SC20 is equipped with 146-pin 1.0mm pitch SMT pads plus 64-pin ground pads and reserved pads that can be embedded into cellular application platform. The following chapters provide the detailed description of pins/interfaces listed below. ⚫...

  • Page 16: Pin Assignment

    3.2. Pin Assignment The following figure shows the pin assignment of SC20 module. VBAT_BB GPIO_96 VBAT_BB GPIO_65 GPIO_36 GPIO_94 MIC1P GPIO_98 MIC_GND GPIO_0 MIC2P GPIO_110 GPIO_97 EARP EARN GPIO_68 SPKP GPIO_69 GPIO_89 SPKN GPIO_88 USB_DM GPIO_92 USB_DP GPIO_31 KEY_VOL_DOWN USB_ID KEY_VOL_UP USIM2_DETECT UART2_TXD...

  • Page 17: Wi-Fi And Bt

    Wi-Fi and BT SC20 module provides a shared antenna interface ANT_WIFI/BT for Wi-Fi and Bluetooth (BT) functions. The interface impedance is 50Ω. External antennas such as PCB antenna, sucker antenna and ceramic antenna can be connected to the module via the interface, so as to achieve Wi-Fi and BT functions. 4.1.

  • Page 18: Bt Overview

    IEEE Std 802.11b, IEEE Std 802.11d, IEEE Std 802.11e, IEEE Std 802.11g, IEEE Std 802.11i: IEEE 802.11-2007 WLAN MAC and PHY, June 2007 4.2. BT Overview SC20 module supports BT4.1 (BR/EDR+BLE) specification, as well as GFSK, 8-DPSK, π/4-DQPSK modulation modes. ⚫...
  • Page 19 Packet Types 2-DH5 3-DH5 Transmitting Power 10dBm 8dBm 8dBm Receiver Performance Packet Types 2-DH5 3-DH5 Receiving Sensitivity -92dBm -91dBm -86dBm SC20-A_Manual_R1.0 Confidential / Released 18 / 57...

  • Page 20: Gnss

    GNSS SC20 module integrates a Qualcomm IZat™ GNSS engine (GEN 8C) which supports multiple positioning and navigation systems including GPS, GLONASS and BeiDou. With an embedded LNA, the module provides greatly improved positioning accuracy. 5.1. GNSS Performance The following table lists the GNSS performance of SC20 module in conduction mode. Table 5: GNSS Performance Parameter Description...

  • Page 21: Antenna Interface

    Antenna Interface SC20 antenna interface includes a main antenna, an Rx-diversity/MIMO antenna, a GNSS antenna and a Wi-Fi/BT antenna. The antenna interface has an impedance of 50Ω. 6.1. Main/Rx-diversity Antenna Interface 6.1.1. Pin Definition The main antenna and Rx-diversity antenna pins’ definition are shown below. Table 6: Pin Definition of the Main/Rx-diversity Antenna Pin Name Pin No.
  • Page 22 WCDMA Band 4 2110-2155 1710-1755 WCDMA Band 5 869-894 824-849 WCDMA Band 6 875-885 830-840 WCDMA Band 8 925-960 880-915 WCDAM Band 19 875-890 830-845 CDMA BC0 869-894 824-849 TD-SCDMA Band 34 2010-2025 2010-2025 TD-SCDMA Band 39 1880-1920 1880-1920 LTE-FDD Band 1 2110-2170 1920-1980 LTE-FDD Band 2...

  • Page 23: Wi-Fi/Bt Antenna Interface

    LTE-TDD Band 41 2555-2655 2555-2655 NOTE The bandwidth of LTE-TDD Band 41 for SC20 module is 100MHz (2555 MHz - 2655 MHz), and the corresponding channel range is from 40240 up to 41240. 6.2. Wi-Fi/BT Antenna Interface The following tables show the Wi-Fi/BT antenna pin’s definition and frequency specification. Table 8: Pin Definition of Wi-Fi/BT Antenna Pin Name Pin No.

  • Page 24: Antenna Installation

    Table 11: GNSS Frequency Type Frequency Unit 1575.42 ± 1.023 GLONASS 1597.5 - 1605.8 BeiDou 1561.098 ± 2.046 6.4. Antenna Installation 6.4.1. Antenna Requirement The following table shows the requirement on main antenna, RX-diversity antenna, Wi-Fi/BT antenna and GNSS antenna. Table 12: Antenna Requirements Type Requirements...
  • Page 25 Active Antenna Embedded LNA Gain: 20dB (Typ.) Active Antenna Total Gain: > 18dBi (Typ.) SC20-A_Manual_R1.0 Confidential / Released 24 / 57...

  • Page 26: Electrical, Reliability And Radio Characteristics

    Electrical, Reliability and Radio Characteristics 7.1. Absolute Maximum Ratings Absolute maximum ratings for power supply and voltage on digital and analog pins of the module are listed in the following table. Table 13: Absolute Maximum Ratings Parameter Min. Max. Unit VBAT -0.5 USB_VBUS...

  • Page 27: Charging Performance Specifications

    Parameter Description Conditions Min. Typ. Max. Unit USB_VBUS USB detection 4.35 Power supply voltage VRTC 3.25 of backup battery. 7.3. Charging Performance Specifications Table 15: Charging Performance Specifications Parameter Min. Typ. Max. Unit Trickle charging current Trickle charging threshold voltage range 2.796 2.984 (15.62mV steps)

  • Page 28: Current Consumption

    NOTES Operating temperature range ---- 3GPP compliant. 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 P might reduce in their value and exceed the specified tolerances.
  • Page 29 Parameter Description Conditions Typ. Unit Sleep 5.49 @DRX=5 Sleep 3.87 @DRX=6 LTE-TDD supply current Sleep 3.05 @DRX=7 Sleep 2.67 @DRX=8 GSM900 PCL=5@31.84dBm 253.6 GSM900 PCL=12@18.49dBm 142.9 GSM900 PCL=19@4.95dBm 117.8 GSM voice call DCS1800 PCL=0@28.91dBm 200.9 DCS1800 PCL=7@15.35dBm DCS1800 PCL=15@-0.21dBm 138.1 BC0(max power) 619.8 @23.91dBm...
  • Page 30 Parameter Description Conditions Typ. Unit DCS1800 (3UL/2DL) 355.9 @24.54dBm DCS1800 (4UL/1DL) 440.3 @24.44dBm BC0(max power) CDMA data transfer 602.5 @23.68dBm Band 1(HSDPA) @21.64dBm 461.5 Band 8(HSDPA) @21.61dBm 423.8 WCDMA data transfer Band 1(HSUPA) @21.36dBm 452.5 Band 8(HSUPA) @21.56dBm LTE-FDD Band1 @22.96dBm 631.2 LTE-FDD Band3@22.95dBm 639.6...
  • Page 31 Parameter Description Conditions Typ. Unit Sleep 2.17 @DRX=7 Sleep 1.90 @DRX=8 Sleep 1.72 @DRX=9 Sleep 5.49 @DRX=5 Sleep 3.06 @DRX=6 LTE-FDD supply current Sleep 2.37 @DRX=7 Sleep 1.91 @DRX=8 Sleep 5.51 @DRX=5 Sleep 3.45 @DRX=6 LTE-TDD supply current Sleep 2.40 @DRX=7 Sleep 1.85...
  • Page 32 Parameter Description Conditions Typ. Unit PCS1900 PCL=0@29.78dBm PCS1900 PCL=7@16.73dBm PCS1900 PCL=15@0.66dBm Band 1(max power) @23.10dBm Band 5(max power) WCDMA voice call @23.32dBm Band 8(max power) @23.26dBm GPRS850 (1UL/4DL) @32.83dBm GPRS850 (2UL/3DL) @32.72dBm GPRS850 (3UL/2DL) @30.71dBm GPRS850 (4UL/1DL) @29.59dBM GPRS900 (1UL/4DL) @33.02dBm GPRS900 (2UL/3DL) @32.87dBm...
  • Page 33 Parameter Description Conditions Typ. Unit PCS1900 (3UL/2DL) @29.48dBm PCS1900 (4UL/1DL) @29.30dBm EDGE850 (1UL/4DL) @26.71dBm EDGE850 (2UL/3DL) @26.73dBm EDGE850 (3UL/2DL) @26.62dBm EDGE850 (4UL/1DL) @26.54dBm EDGE900 (1UL/4DL) @27.05dBm EDGE900 (2UL/3DL) @26.99dBm EDGE900 (3UL/2DL) @27.07dBm EDGE900 (4UL/1DL) @26.84dBm EDGE data transfer DCS1800 (1UL/4DL) @25.56dBm DCS1800 (2UL/3DL) @25.69dBm...
  • Page 34 Parameter Description Conditions Typ. Unit Band 8(HSDPA) @22.34dBm Band 1(HSUPA) @21.62dBm Band 5(HSUPA) @22.12dBm Band 8(HSUPA) @21.82dBm LTE-FDD Band1 @22.71dBm LTE-FDD Band3@23.42dBm LTE-FDD Band5@23.64dBm LTE-FDD Band7 @22.98dBm LTE-FDD Band8 LTE data transfer @23.59dBm LTE-FDD Band20 @23.48dBm LTE-TDD Band38 @23.21dBm LTE-TDD Band40 @23.28dBm LTE-TDD Band41 @23.00dBm...
  • Page 35 Parameter Description Conditions Typ. Unit Sleep @DRX=8 NULL Sleep @DRX=9 NULL GSM850PCL=5@32.48dBm NULL GSM850PCL=12@19.35dBm NULL GSM850PCL=19@5.47dBm NULL GSM voice call PCS1900 NULL PC=L0@30.08dBm PCS1900 NULL PCL=7@16.86dBm PCS1900 NULL PCL=15@1.13dBm Band 1(max power) NULL @23.69dBm Band 2(max power) NULL @23.90dBm Band 4(max power) WCDMA voice call NULL @23.65dBm...
  • Page 36 Parameter Description Conditions Typ. Unit EDGE850 (1UL/4DL) NULL @26.80dBm EDGE850 (2UL/3DL) NULL @26.69dBm EDGE850 (3UL/2DL) NULL @26.52dBm EDGE850 (4UL/1DL) NULL @26.41dBm EDGE data transfer PCS1900 (1UL/4DL) NULL @25.96dBm PCS1900 (2UL/3DL) NULL @25.80dBm PCS1900 (3UL/2DL) NULL @25.56dBm PCS1900 (4UL/1DL) NULL @25.40dBm Band 1(HSDPA) @22.7dBm NULL Band 2(HSDPA) @22.90dBm...

  • Page 37: Electrostatic Discharge

    Parameter Description Conditions Typ. Unit LTE-FDD Band13 @23.3dBm 674.84 LTE-FDD Band25 @23.1dBm 760 LTE-FDD Band26 @23.2dBm 731 7.6. Electrostatic Discharge The module is not protected against electrostatic discharge (ESD) in general. Consequently, it should be subject to ESD handling precautions that are typically applied to ESD sensitive components. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any application that incorporates the module.

  • Page 38: Technical Dimensions

    Technical Dimensions This chapter describes the mechanical dimensions of the module. All dimensions are measured in mm. 8.1. Mechanical Dimensions of the Module Figure 3: Module Top and Side Dimensions SC20-A_Manual_R1.0 Confidential / Released 37 / 57...
  • Page 39 Figure 4: Module Bottom Dimensions (Top View) SC20-A_Manual_R1.0 Confidential / Released 38 / 57...

  • Page 40: Recommended Footprint

    8.2. Recommended Footprint Figure 5: Recommended Footprint (Top View) NOTES For easy maintenance of the module, keep about 3mm between the module and other components in the host PCB. All RESERVED pins must not be connected to GND. SC20-A_Manual_R1.0 Confidential / Released 39 / 57...

  • Page 41: Top And Bottom View Of The Module

    Figure 6: Top View of the Module Figure 7: Bottom View of the Module NOTE These are design effect drawings of SC20 module. For more accurate pictures, please refer to the module that you get from Quectel. SC20-A_Manual_R1.0 Confidential / Released 40 / 57...

  • Page 42: Storage, Manufacturing And Packaging

    Storage, Manufacturing and Packaging 9.1. Storage SC20 is stored in a vacuum-sealed bag. The restrictions of storage condition are shown as below. Shelf life in sealed bag is 12 months at < 40º C/90%RH. After this bag is opened, devices that will be subjected to reflow soldering or other high temperature process must be: Mounted within 72 hours at factory conditions of ≤...
  • Page 43 Figure 8: Recommended Stencil Design for LGA Pads It is suggested that the peak reflow temperature is from 235 to 245º C (for SnAg3.0Cu0.5 alloy). The absolute maximum reflow temperature is 260º C. To avoid damage to the module caused by repeated heating, it is suggested that the module should be mounted after reflow soldering for the other side of PCB has been completed.

  • Page 44: Packaging

    9.3. Packaging SC20 is packaged in tape and reel carriers. One reel is 12.32 meters long and contains 200pcs modules. The following figures show the package details, measured in mm. Figure 10: Tape Dimensions Figure 11: Reel Dimensions SC20-A_Manual_R1.0 Confidential / Released 43 / 57...
  • Page 45 Table 21: Reel Packaging Model MOQ for MP Minimum Package: 200pcs Minimum Package×4=800pcs Name Size: 370mm*350mm*85mm Size: 380mm*365mm*365mm SC20 N.W: 1.92kg N.W:7.68 kg G.W: 3.17kg G.W:13.63 kg Packing information: SC20-A_Manual_R1.0 Confidential / Released 44 / 57...

  • Page 46: Appendix A Gprs Coding Schemes

    Appendix A GPRS Coding Schemes Table 22: Description of Different Coding Schemes Scheme CS-1 CS-2 CS-3 C4-4 Code Rate Pre-coded USF Radio Block excl.USF and BCS Tail Coded Bits Punctured Bits Data Rate Kb/s 9.05 13.4 15.6 21.4 SC20-A_Manual_R1.0 Confidential / Released 45 / 57...

  • Page 47: Appendix B Gprs Multi-Slot Classes

    Appendix B GPRS Multi-slot Classes Twenty-nine classes of GPRS multi-slot modes are defined for MS in GPRS specification. Multi-slot classes are product dependent, and determine the maximum achievable data rates in both the uplink and downlink directions. Written as 3+1 or 2+2, the first number indicates the amount of downlink timeslots, while the second number indicates the amount of uplink timeslots.

  • Page 48: Appendix C Edge Modulation And Coding Schemes

    Appendix C EDGE Modulation and Coding Schemes Table 24: EDGE Modulation and Coding Schemes Coding Scheme Modulation Coding Family 1 Timeslot 2 Timeslot 4 Timeslot CS-1 GMSK 9.05kbps 18.1kbps 36.2kbps CS-2 GMSK 13.4kbps 26.8kbps 53.6kbps CS-3 GMSK 15.6kbps 31.2kbps 62.4kbps CS-4 GMSK 21.4kbps...

  • Page 49: Fcc Requirement

    FCC Requirement FCC Regulations: 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.

  • Page 50: Users Manual Of The End Product

    1.4 USERS MANUAL OF THE END PRODUCT: In the user manual of the end product, the end user has to be informed to keep at least 20cm separation with the antenna while this end product is installed and operated. The end user has to be informed that the FCC radio-frequency exposure guidelines for an uncontrolled environment can be satisfied.

  • Page 51: Ce Requirement

    The minimum distance between the user and/or any bystander and the radiating structure of the transmitter is 20cm. Hereby, Quectel Wireless Solutions Co., Ltd. declares that the radio equipment type SC20-E is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233...

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