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SC20-AD Manual

LTE Module Series

Rev: SC20-AD_Manual_R1.0

Date: 2021-12-14

www.quectel.com

Summary of content (51 pages)

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SC20-AD Manual LTE Module Series Rev: SC20-AD_Manual_R1.0 Date: 2021-12-14 www.quectel.
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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 For technical support, or to report documentation errors, please visit: http://www.quectel.com/support/techsupport.
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About the Document History Revision Date Author 1.0 2021-12-14 Winston SC20-A_Manual_R1.0 Description SC20-AD_Manual_R1.
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Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 1 Introduction .......................................................................................................................................... 5 1.1. Safety Information.......
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8.1. 8.2. 8.3. 9 Mechanical Dimensions of the Module.................................................................................... 37 Recommended Footprint ......................................................................................................... 39 Top and Bottom View of the Module........................................................................................ 40 Storage, Manufacturing and Packaging .............................................................................
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1 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. FCC Certification Requirements.
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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).
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les personnes et ne doit pas être colocaliséou 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.
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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. While you are in this condition and need emergent help, please remember using emergency call.
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2 Product Concept 2.1. General Description SC20 is a series of 4G smart modules based on Qualcomm platform and Android operating system, with providing industrial grade performance. It supports worldwide LTE-FDD/LTE-TDD/WCDMA/TD-SCDMA/ EVDO/CDMA/GSM coverage, and also supports short-range wireless communication via Wi-Fi 802.11a/b/g/n and BT4.1 LE. Additionally, SC20 integrates GPS/GLONASS/BeiDou satellite positioning systems.
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2.2. Key Features The following table describes the detailed features of SC20 module. Table 2: SC20 Key Features Feature Details Applications Processor ARM Cortex-A7 microprocessor cores (quad-core) up to 1.1 GHz 512KB L2 cache Modem DSP QDSP6 v5 core up to 691.2 MHz 768KB L2 cache Memory 8GB EMMC+8Gb LPDDR3 Operating System Android OS 7.1.2(SC20-AD)/Linux YOCTO(SC20-ALD) Power Supply Supply voltage: 3.5V~4.2V Typical supply voltage: 3.
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EDGE Support EDGE multi-slot class 33 Support GMSK and 8-PSK WLAN Features Support 2.4G and 5G frequency band, (SC20-CE does not support 5G frequency). Support 802.11a/b/g/n, data rate up to 150Mbps Support AP mode; Bluetooth Feature BT4.2 LE GNSS Features GPS/GLONASS/BeiDou SMS Text and PDU mode Point to point MO and MT SMS cell broadcast SMS storage: ME by default AT Commands Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT commands LCM Interface 4 lanes MIPI_DSI, up to 1.
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I2C Interface 3 groups I2C, used for TP, camera, sensor peripherals, etc. ADC Interface Support 3 ADC interfaces,used for input voltage sense, battery temperature detection and general purpose ADC Real Time Clock Implemented Antenna Interface MAIN antenna, DRX antenna, GNSS antenna and Wi-Fi/BT antenna Physical Characteristics Size: 40.5±0.15 × 40.5±0.15 × 2.8±0.2 mm Interface: LCC Weight: approx. 9.
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--CAM (MIPI) interface --AUDIO interface 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]. SC20-A_Manual_R1.
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3 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. ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ Power supply VRTC interface LCM interface TP interface Camera interface Audio interface USB interface USIM interface UART interface SDIO interface I2C interface ADC interface SC20-A_Manual_R1.
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3.2.
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4 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. Wi-Fi Overview SC20 module supports 2.4G and 5G double-band WLAN wireless communication based on IEEE 802.11 a/802.11b/ 802.11g/ 802.11n standard protocols.
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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 2 4.2. BT Overview SC20 module supports BT4.1 (BR/EDR+BLE) specification, as well as GFSK, 8-DPSK, π/4-DQPSK modulation modes. ⚫ ⚫ ⚫ Supports max. 7 wireless connections. Supports max. 3.5 piconets at the same time. Supports one SCO (Synchronous Connection Oriented) or eSCO connection. The BR/EDR channel bandwidth is 1MHz, and can accommodate 79 channels.
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Packet Types DH5 2-DH5 3-DH5 Transmitting Power 10dBm 8dBm 8dBm Packet Types DH5 2-DH5 3-DH5 Receiving Sensitivity -92dBm -91dBm -86dBm Receiver Performance SC20-A_Manual_R1.
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5 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 Sensitivity (GNSS) TTFF (GNSS) Static Drift (GNSS) SC20-A_Manual_R1.0 Description Typ.
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6 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.
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WCDMA Band 4 2110-2155 1710-1755 MHz WCDMA Band 5 869-894 824-849 MHz WCDMA Band 6 875-885 830-840 MHz WCDMA Band 8 925-960 880-915 MHz WCDAM Band 19 875-890 830-845 MHz CDMA BC0 869-894 824-849 MHz TD-SCDMA Band 34 2010-2025 2010-2025 MHz TD-SCDMA Band 39 1880-1920 1880-1920 MHz LTE-FDD Band 1 2110-2170 1920-1980 MHz LTE-FDD Band 2 1930-1990 1850-1910 MHz LTE-FDD Band 3 1805-1880 1710-1785 MHz LTE-FDD Band 4 2110-2155 1710-1755 MHz LTE-FDD Band 5 869-894 82
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LTE-TDD Band 41 2555-2655 2555-2655 MHz 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.
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Table 11: GNSS Frequency Type Frequency Unit GPS 1575.42 ± 1.023 MHz GLONASS 1597.5 - 1605.8 MHz BeiDou 1561.098 ± 2.046 MHz 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.
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Active Antenna Embedded LNA Gain: 20dB (Typ.) Active Antenna Total Gain: > 18dBi (Typ.) SC20-A_Manual_R1.
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7 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 6 V USB_VBUS -0.5 16 V Peak Current of VBAT 0 3 A Voltage on Digital Pins -0.3 2.3 V 7.2.
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Parameter Description USB_VBUS VRTC Conditions Min. Typ. Max. Unit USB detection 4.35 5.0 6.3 V Power supply voltage of backup battery. 2.0 3.0 3.25 V 7.3. Charging Performance Specifications Table 15: Charging Performance Specifications Parameter Min. Typ. Max. Unit Trickle charging current 81 90 99 mA Trickle charging threshold voltage range (15.62mV steps) 2.5 2.796 2.984 V Weak battery threshold voltage range (18.75mV steps) 3.0 3.2 3.
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NOTES 1. 1) Operating temperature range ---- 3GPP compliant. 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 Pout might reduce in their value and exceed the specified tolerances.
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Parameter Description LTE-TDD current supply GSM voice call CDMA voice call WCDMA voice call EDGE data transfer SC20-A_Manual_R1.0 Conditions Typ. Unit Sleep @DRX=5 5.49 mA Sleep @DRX=6 3.87 mA Sleep @DRX=7 3.05 mA Sleep @DRX=8 2.67 mA GSM900 PCL=5@31.84dBm 253.6 mA GSM900 PCL=12@18.49dBm 142.9 mA GSM900 PCL=19@4.95dBm 117.8 mA DCS1800 PCL=0@28.91dBm 200.9 mA DCS1800 PCL=7@15.35dBm 157 mA DCS1800 PCL=15@-0.21dBm 138.1 mA BC0(max power) @23.91dBm 619.
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Parameter Description CDMA data transfer WCDMA transfer data LTE data transfer Conditions Typ. Unit DCS1800 (3UL/2DL) @24.54dBm 355.9 mA DCS1800 (4UL/1DL) @24.44dBm 440.3 mA BC0(max power) @23.68dBm 602.5 mA Band 1(HSDPA) @21.64dBm 461.5 mA Band 8(HSDPA) @21.61dBm 423.8 mA Band 1(HSUPA) @21.36dBm 452.5 mA Band 8(HSUPA) @21.56dBm 436 mA LTE-FDD Band1 @22.96dBm 631.2 mA LTE-FDD Band3@22.95dBm 639.6 mA LTE-FDD Band8 @23.17dBm 542 mA LTE-TDD Band38 @22.02dBm 422.
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Parameter Description LTE-FDD supply current LTE-TDD supply current GSM voice call SC20-A_Manual_R1.0 Conditions Typ. Unit Sleep @DRX=7 2.17 mA Sleep @DRX=8 1.90 mA Sleep @DRX=9 1.72 mA Sleep @DRX=5 5.49 mA Sleep @DRX=6 3.06 mA Sleep @DRX=7 2.37 mA Sleep @DRX=8 1.91 mA Sleep @DRX=5 5.51 mA Sleep @DRX=6 3.45 mA Sleep @DRX=7 2.40 mA Sleep @DRX=8 1.85 mA Sleep PCL=5@32.79dBm 255 mA GSM850 PCL=12@19.04dBm 135 mA GSM850 PCL=19@5.37dBm 108 mA EGSM900 PCL=5@32.
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Parameter Description WCDMA voice call GPRS data transfer SC20-A_Manual_R1.0 Conditions Typ. Unit PCS1900 PCL=0@29.78dBm 192 mA PCS1900 PCL=7@16.73dBm 152 mA PCS1900 PCL=15@0.66dBm 130 mA Band 1(max power) @23.10dBm 521 mA Band 5(max power) @23.32dBm 504 mA Band 8(max power) @23.26dBm 536 mA GPRS850 (1UL/4DL) @32.83dBm 260 mA GPRS850 (2UL/3DL) @32.72dBm 422 mA GPRS850 (3UL/2DL) @30.71dBm 491 mA GPRS850 (4UL/1DL) @29.59dBM 571 mA GPRS900 (1UL/4DL) @33.
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Parameter Description EDGE data transfer WCDMA data transfer SC20-A_Manual_R1.0 Conditions Typ. Unit PCS1900 (3UL/2DL) @29.48dBm 396 mA PCS1900 (4UL/1DL) @29.30dBm 503 mA EDGE850 (1UL/4DL) @26.71dBm 175 mA EDGE850 (2UL/3DL) @26.73dBm 268 mA EDGE850 (3UL/2DL) @26.62dBm 259 mA EDGE850 (4UL/1DL) @26.54dBm 451 mA EDGE900 (1UL/4DL) @27.05dBm 182 mA EDGE900 (2UL/3DL) @26.99dBm 281 mA EDGE900 (3UL/2DL) @27.07dBm 374 mA EDGE900 (4UL/1DL) @26.84dBm 476 mA DCS1800 (1UL/4DL) @25.
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Parameter Description LTE data transfer Conditions Typ. Unit Band 8(HSDPA) @22.34dBm 491 mA Band 1(HSUPA) @21.62dBm 486 mA Band 5(HSUPA) @22.12dBm 467 mA Band 8(HSUPA) @21.82dBm 492 mA LTE-FDD Band1 @22.71dBm 690 mA LTE-FDD Band3@23.42dBm 699 mA LTE-FDD Band5@23.64dBm 684 mA LTE-FDD Band7 @22.98dBm 868 mA LTE-FDD Band8 @23.59dBm 681 mA LTE-FDD Band20 @23.48dBm 692 mA LTE-TDD Band38 @23.21dBm 500 mA LTE-TDD Band40 @23.28dBm 449 mA LTE-TDD Band41 @23.
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Parameter Description GSM voice call WCDMA voice call GPRS data transfer SC20-A_Manual_R1.0 Conditions Typ. Unit Sleep @DRX=8 NULL mA Sleep @DRX=9 NULL mA GSM850PCL=5@32.48dBm NULL mA GSM850PCL=12@19.35dBm NULL mA GSM850PCL=19@5.47dBm NULL mA PCS1900 PC=L0@30.08dBm NULL mA PCS1900 PCL=7@16.86dBm NULL mA PCS1900 PCL=15@1.13dBm NULL mA Band 1(max power) @23.69dBm NULL mA Band 2(max power) @23.90dBm NULL mA Band 4(max power) @23.65dBm NULL mA Band 5(max power) @23.
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Parameter Description EDGE data transfer Conditions Typ. Unit EDGE850 (1UL/4DL) @26.80dBm NULL mA EDGE850 (2UL/3DL) @26.69dBm NULL mA EDGE850 (3UL/2DL) @26.52dBm NULL mA EDGE850 (4UL/1DL) @26.41dBm NULL mA PCS1900 (1UL/4DL) @25.96dBm NULL mA PCS1900 (2UL/3DL) @25.80dBm NULL mA PCS1900 (3UL/2DL) @25.56dBm NULL mA PCS1900 (4UL/1DL) @25.40dBm NULL mA Band 1(HSDPA) @22.7dBm NULL mA Band 2(HSDPA) @22.90dBm NULL mA Band 4(HSDPA) @22.73dBm NULL mA Band 5(HSDPA) @22.
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Parameter Description Conditions Typ. Unit LTE-FDD Band13 @23.3dBm 674.84 mA LTE-FDD Band25 @23.1dBm 760 mA LTE-FDD Band26 @23.2dBm 731 mA 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.
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8 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.
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Figure 4: Module Bottom Dimensions (Top View) SC20-A_Manual_R1.
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8.2. Recommended Footprint Figure 5: Recommended Footprint (Top View) NOTES 1. 2. 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.
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8.3. 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.
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9 Storage, Manufacturing and Packaging 9.1. Storage SC20 is stored in a vacuum-sealed bag. The restrictions of storage condition are shown as below. 1. 2. 3. 4. Shelf life in sealed bag is 12 months at < 40ºC/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 ≤ 30ºC/60%RH. ⚫ Stored at < 10% RH.
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0.55mm 0.55mm 1.5mm 1.5mm Figure 8: Recommended Stencil Design for LGA Pads It is suggested that the peak reflow temperature is from 235 to 245ºC (for SnAg3.0Cu0.5 alloy). The absolute maximum reflow temperature is 260ºC. 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.
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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.
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Table 21: Reel Packaging Model Name MOQ for MP Minimum Package: 200pcs Minimum Package×4=800pcs SC20 200 Size: 370mm*350mm*85mm N.W: 1.92kg G.W: 3.17kg Size: 380mm*365mm*365mm N.W:7.68 kg G.W:13.63 kg Packing information: SC20-A_Manual_R1.
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10 Appendix A GPRS Coding Schemes Table 22: Description of Different Coding Schemes Scheme CS-1 CS-2 CS-3 C4-4 Code Rate 1/2 2/3 3/4 1 USF 3 3 3 3 Pre-coded USF 3 6 6 12 Radio Block excl.USF and BCS 181 268 312 428 BCS 40 16 16 16 Tail 4 4 4 - Coded Bits 456 588 676 456 Punctured Bits 0 132 220 - Data Rate Kb/s 9.05 13.4 15.6 21.4 SC20-A_Manual_R1.
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11 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.
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12 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 42.8kbps 85.6kbps MCS-1 GMSK C 8.80kbps 17.60kbps 35.20kbps MCS-2 GMSK B 11.2kbps 22.4kbps 44.8kbps MCS-3 GMSK A 14.8kbps 29.6kbps 59.2kbps MCS-4 GMSK C 17.
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13 FCC Requirement 1.1 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. This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
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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. The end user has to also be informed that any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment.
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14 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 http://www.quectel.com/support/downloadb/TechnicalDocuments.