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SC20 Hardware Design

Smart LTE Module Series

Rev: SC20_Hardware_Design_V1.0

Date: 2019-12-03

www.quectel.com

Summary of content (128 pages)

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SC20 Hardware Design Smart LTE Module Series Rev: SC20_Hardware_Design_V1.0 Date: 2019-12-03 www.quectel.
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Smart LTE Module Series SC20 Hardware Design Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters: Quectel Wireless Solutions Co., Ltd. Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, 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/sales.
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Smart LTE Module Series SC20 Hardware Design About the Document History Revision Date Author Description 1.
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Smart LTE Module Series SC20 Hardware Design Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 Table Index .................................................................................................................................
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Smart LTE Module Series SC20 Hardware Design 3.20.2. Front Camera Interface .................................................................................................. 61 3.20.3. Design Considerations ................................................................................................... 63 3.21. Sensor Interfaces..................................................................................................................... 64 3.22. Audio Interfaces .................................
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Smart LTE Module Series SC20 Hardware Design 9 Storage, Manufacturing and Packaging ........................................................................................ 114 9.1. Storage .................................................................................................................................. 114 9.2. Manufacturing and Soldering ................................................................................................ 115 9.3. Packaging ....................................
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Smart LTE Module Series SC20 Hardware Design Table Index TABLE 1: SC20-CE R1.1 FREQUENCY BANDS.............................................................................................. 15 TABLE 2: SC20-EL FREQUENCY BANDS ....................................................................................................... 16 TABLE 3: SC20-AL FREQUENCY BANDS ....................................................................................................... 16 TABLE 4: SC20-AUL FREQUENCY BANDS .....
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Smart LTE Module Series SC20 Hardware Design TABLE 44: GNSS FREQUENCY ....................................................................................................................... 82 TABLE 45: ANTENNA REQUIREMENTS .......................................................................................................... 83 TABLE 46: ABSOLUTE MAXIMUM RATINGS ..................................................................................................
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Smart LTE Module Series SC20 Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 22 FIGURE 2: PIN ASSIGNMENT (TOP VIEW)..................................................................................................... 24 FIGURE 3: VOLTAGE DROP SAMPLE .............................................................................................................
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Smart LTE Module Series SC20 Hardware Design FIGURE 38: REFERENCE CIRCUIT DESIGN FOR GNSS ACTIVE ANTENNA ............................................. 83 FIGURE 39: DIMENSIONS OF THE U.FL-R-SMT CONNECTOR (UNIT: MM) ................................................ 84 FIGURE 40: MECHANICALS OF U.FL-LP CONNECTORS ............................................................................. 85 FIGURE 41: SPACE FACTOR OF MATED CONNECTORS (UNIT: MM) .........................................................
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Smart LTE Module Series SC20 Hardware Design OEM/Integrators Installation Manual Important Notice to OEM integrators 1. This module is limited to OEM installation ONLY. 2. This module is limited to installation in mobile or fixed applications, according to Part 2.1091(b). 3. The separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and different antenna configurations 4. For FCC Part 15.
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Smart LTE Module Series SC20 Hardware Design (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 equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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Smart LTE Module Series SC20 Hardware Design L'appareil peut interrompre automatiquement la transmission en cas d'absence d'informations à transmettre ou de panne opérationnelle. Notez que ceci n'est pas destiné à interdire la transmission d'informations de contrôle ou de signalisation ou l'utilisation de codes répétitifs lorsque cela est requis par la technologie.
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Smart LTE Module Series SC20 Hardware Design 1 Introduction This document defines the SC20 module and its air interfaces and hardware interfaces which are connected with customers’ application. This document can help customers quickly understand module interface specifications, electrical and mechanical details as well as other related information of SC20 module. Associated with application note and user guide, customers can use SC20 module to design and set up mobile applications easily. 1.1.
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Smart LTE Module Series SC20 Hardware Design Cellular terminals or mobiles operating over radio signals and cellular network cannot be guaranteed to connect in all possible conditions (for example, with unpaid bills or with an invalid (U)SIM card). When emergent help is needed in such conditions, please remember using emergency call. In order to make or receive a call, the cellular terminal or mobile must be switched on in a service area with adequate cellular signal strength.
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Smart LTE Module Series SC20 Hardware Design 2 Product Concept 2.1. General Description SC20 is a series of Smart LTE module based on Qualcomm platform and Linux operating system, and provides industrial grade performance. Its general features are listed below: ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ Support worldwide LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, TD-SCDMA, EVDO/CDMA, EDGE and GPRS coverage. Support short-range wireless communication via Wi-Fi 802.11a/b/g/n and BT4.2 LE.
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Smart LTE Module Series SC20 Hardware Design BT 2402MHz~2480MHz GNSS GPS: 1575.42MHz±1.023MHz GLONASS: 1597.5MHz~1605.8MHz BeiDou: 1561.098MHz±2.046MHz Table 2: SC20-EL Frequency Bands Type Frequency LTE-FDD B1/B3/B5/B7/B8/B20 LTE-TDD B38/B40/B41 WCDMA B1/B5/B8 GSM 850/900/1800/1900MHz Wi-Fi 802.11a/b/g/n 2400MHz~2482MHz 5180MHz~5825MHz BT4.2 LE 2402MHz~2480MHz GNSS GPS: 1575.42MHz±1.023MHz GLONASS: 1597.5MHz~1605.8MHz BeiDou: 1561.098MHz±2.
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Smart LTE Module Series SC20 Hardware Design Table 4: SC20-AUL Frequency Bands Type Frequency LTE-FDD B1/B3/B5/B7/B8/B28 LTE-TDD B40 WCDMA B1/B2/B5/B8 GSM 850/900/1800/1900MHz Wi-Fi 802.11a/b/g/n 2400MHz~2482MHz 5180MHz~5825MHz BT4.2 LE 2402MHz~2480MHz GNSS GPS: 1575.42MHz±1.023MHz GLONASS: 1597.5MHz~1605.8MHz BeiDou: 1561.098MHz±2.046MHz Table 5: SC20-JL Frequency Bands Type Frequency LTE-FDD B1/B3/B8/B18/B19/B26 LTE-TDD B41 WCDMA B1/B6/B8/B19 Wi-Fi 802.
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Smart LTE Module Series SC20 Hardware Design 2.2. Key Features The following table describes the detailed features of SC20 module. Table 6: SC20 Key Features Feature Details Applications Processor ARM Cortex-A7 microprocessor cores (quad-core) up to 1.1GHz 512KB L2 cache Modem DSP QDSP6 v5 core up to 691.2MHz 768KB L2 cache Memory 8GB eMMC+8Gb LPDDR3 Operating System Linux Power Supply Supply voltage: 3.5V~4.2V Typical supply voltage: 3.
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Smart LTE Module Series SC20 Hardware Design GSM Features R99: CSD: 9.6kbps, 14.4kbps GPRS: Support GPRS multi-slot class 33 (33 by default) Coding scheme: CS-1, CS-2, CS-3 and CS-4 Max 85.6Kbps (UL)/Max 107Kbps (DL) EDGE: Support EDGE multi-slot class 33 (33 by default) Support GMSK and 8-PSK for different MCS (Modulation and Coding Scheme) Downlink coding schemes: CS 1-4 and MCS 1-9 Uplink coding schemes: CS 1-4 and MCS 1-9 Max 236.8Kbps (UL)/Max 296Kbps (DL) WLAN Features Support 2.
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Smart LTE Module Series SC20 Hardware Design Audio output: Class AB stereo headphone output Class AB earpiece differential output Class D speaker differential amplifier output Audio Codec HR, FR, EFR, AMR, AMR-WB USB Interface Compliant with USB 2.
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Smart LTE Module Series SC20 Hardware Design 1. 2. 1) Within operation temperature range, the module is 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 Pout might reduce in their value and exceed the specified tolerances.
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Smart LTE Module Series SC20 Hardware Design ANT_MAIN ANT_GNSS ANT_DRX ANT_WIFI/BT Diplex SAW PAM Switch 2.4G SAW VBAT_RF SAW LNA Duplexs APT SAW GSM PA 5G TX WCN SAW VBAT_BB Transceiver USB_VBUS TRX_CLK LPDDR3+ eMMC VRTC PWRKEY PMIC RESET_N Baseband AUDIO 19.2M XO ADCs LDO Output LCM (MIPI) TP CAM (MIPI) USB (U)SIM UART SD I2C GPIOs Card Figure 1: Functional Diagram 2.4.
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Smart LTE Module Series SC20 Hardware Design 3 Application Interfaces 3.1. General Description SC20 is an SMD type module with 146 LCC pads and 64 LGA pads. The following chapters provide the detailed description of pins/interfaces listed below.
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Smart LTE Module Series SC20 Hardware Design 3.2.
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Smart LTE Module Series SC20 Hardware Design 3.3. Pin Description The following tables show the SC20’s pin definition. Table 7: I/O Parameters Definition Type Description IO Bidirectional DI Digital input DO Digital output PI Power input PO Power output AI Analog input AO Analog output OD Open drain The following tables show the SC20’s pin definition and electrical characteristics. Table 8: Pin Description Power Supply Pin Name VBAT_BB VBAT_RF VRTC LDO5_1V8 Pin No.
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Smart LTE Module Series SC20 Hardware Design shift circuit. LDO6_1V8 125 PO 1.8V output power supply Vnorm=1.8V IOmax=100mA Power supply for peripherals. 2.2uF~4.7uF capacitor is recommended to be applied to the LDO6_1V8 pin. If unused, keep this pin open. Power supply for peripherals. 2.2uF~4.7uF capacitor is recommended to be applied to the LDO17_2V85 pin. If unused, keep this pin open. LDO17_2V85 129 PO 2.85V output power supply Vnorm=2.
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Smart LTE Module Series SC20 Hardware Design 198~200, 201~208, 209 Audio Interfaces Pin Name Pin No.
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Smart LTE Module Series SC20 Hardware Design USB_ID 16 AI USB ID detection I/O Description High level by default. (U)SIM Interfaces Pin Name USIM2_ DETECT USIM2_RST USIM2_CLK USIM2_DATA USIM2_VDD USIM1_ DETECT USIM1_RST Pin No. 17 18 19 20 21 22 23 Comment Active Low. External pull-up resistor is required. If unused, keep this pin open. DI (U)SIM2 card hot-plug detection VILmax=0.63V VIHmin=1.17V DO (U)SIM2 card reset signal VOLmax=0.4V VOHmin= 0.
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Smart LTE Module Series SC20 Hardware Design VIHmin= 0.7×USIM1_VDD VOLmax=0.4V VOHmin= 0.8×USIM1_VDD USIM1_VDD 26 PO (U)SIM1 card power supply For 1.8V (U)SIM: Vmax=1.85V Vmin=1.75V For 2.95V (U)SIM: Vmax=3.1V Vmin=2.8V Either 1.8V or 2.95V (U)SIM card is supported by the module automatically UART Interfaces Pin Name UART1_TX UART1_RX Pin No. 34 35 I/O Description DC Characteristics Comment DO UART1 transmit data VOLmax=0.45V VOHmin=1.35V 1.8V power domain.
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Smart LTE Module Series SC20 Hardware Design 2.95V SD card: VOLmax=0.37V VOHmin=2.2V SD_CMD 40 IO SD_DATA0 41 IO SD_DATA1 42 IO Command signal of SD card High speed bidirectional digital signal lines of SD card 1.8V SD card: VILmax=0.58V VIHmin=1.27V VOLmax=0.45V VOHmin=1.4V 2.95V SD card: VILmax=0.73V VIHmin=1.84V VOLmax=0.37V VOHmin=2.2V 1.8V SD card: VILmax=0.58V VIHmin=1.27V VOLmax=0.45V VOHmin=1.4V 2.95V SD card: VILmax=0.73V VIHmin=1.84V VOLmax=0.37V VOHmin=2.
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Smart LTE Module Series SC20 Hardware Design LCM Interface Pin Name Pin No. I/O Description DC Characteristics VOLmax=0.45V VOHmax=VBAT_B B Comment PWM 29 DO Adjust the backlight brightness. PWM control signal. LCD_RST 49 DO LCD reset signal VOLmax=0.45V VOHmin=1.35V 1.8V power domain. Active low. LCD_TE 50 DI LCD tearing effect signal VILmax=0.63V VIHmin=1.17V 1.8V power domain.
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Smart LTE Module Series SC20 Hardware Design MIPI_CSI0_ CLKP 64 AI MIPI CSI clock signal (positive) MIPI_CSI0_ LN0N 65 AI MIPI CSI data signal (negative) MIPI_CSI0_ LN0P 66 AI MIPI CSI data signal (positive) MIPI_CSI0_ LN1N 67 AI MIPI CSI data signal (negative) MIPI_CSI0_ LN1P 68 AI MIPI CSI data signal (positive) MIPI_CSI1_ CLKN 70 AI MIPI CSI clock signal (negative) MIPI_CSI1_ CLKP 71 AI MIPI CSI clock signal (positive) MIPI_CSI1_ LN0N 72 AI MIPI CSI data signal (negative)
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Smart LTE Module Series SC20 Hardware Design CAM_I2C_ SDA 84 OD I2C data signal of camera 1.8V power domain. Keypad Interfaces Pin Name Pin No I/O Description DC Characteristics Comment PWRKEY 114 DI Turn on/off the module VILmax=0.63V VIHmin=1.17V Pull-up to 1.8V internally, active low. KEY_VOL_ UP 95 DI Volume up VILmax=0.63V VIHmin=1.17V If unused, keep this pin open. KEY_VOL_ DOWN 96 DI Volume down VILmax=0.63V VIHmin=1.17V If unused, keep this pin open.
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Smart LTE Module Series SC20 Hardware Design GPIO Interfaces Pin Name Pin No. I/O Description DC Characteristics Comment GPIO_23 33 IO GPIO 1.8V power domain. GPIO_32 90 IO GPIO 1.8V power domain. GPIO_31 97 IO GPIO 1.8V power domain. GPIO_92 98 IO GPIO 1.8V power domain. GPIO_88 1) 99 IO GPIO 1.8V power domain. GPIO_89 100 IO GPIO 1.8V power domain. GPIO_69 101 IO GPIO 1.8V power domain. GPIO_68 1) 102 IO GPIO 1.8V power domain. GPIO_97 103 IO GPIO 1.
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Smart LTE Module Series SC20 Hardware Design into SPI_MOSI. GPIO_16 123 IO GPIO 1.8V power domain. GPIO_17 124 IO GPIO 1.8V power domain. Other Interfaces Pin Name Pin No. I/O Description DC Characteristics Comment VIB_DRV 28 PO Motor drive Imax=0~175mA Vmax=1.2V~3.1V Connected to the negative terminal of the motor. RESET_N 2) USB_BOOT CHARGE_ SEL 179 46 127 Reset the module Disabled by default and can be enabled through software configuration.
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Smart LTE Module Series SC20 Hardware Design NOTES 1. 2. 1) 2) GPIO_68 and GPIO_88 cannot be pulled up during start-up. RESET_N is disabled by default and can be enabled through software configuration. 3.4. Power Supply 3.4.1. Power Supply Pins SC20 provides two VBAT_RF pins and two VBAT_BB pins for connecting with an external power supply. The VBAT_RF pins are used for the RF part of the module and the VBAT_BB pins are used for the baseband part of the module. 3.4.2.
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Smart LTE Module Series SC20 Hardware Design has to be a single voltage source and can be expanded to two sub paths with star structure. The width of VBAT_BB trace should be no less than 1.5mm, and the width of VBAT_RF trace should be no less than 2mm. In principle, the longer the VBAT trace is, the wider it will be. In addition, in order to get a stable power source, it is suggested to use a 0.
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Smart LTE Module Series SC20 Hardware Design NOTES 1. 2. It is suggested that customers should switch off the power supply for module in abnormal state, and then switch on the power to restart the module. The module supports battery charging function by default. If the above power supply design is adopted, please make sure the charging function is disabled by software or connect VBAT to Schottky diode in series to avoid the reverse current to the power supply chip. 3.5. Turn on and off Scenarios 3.5.1.
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Smart LTE Module Series SC20 Hardware Design S1 PWRKEY TVS Close to S1 Figure 7: Turn on the Module Using Keystroke The turning on scenario is illustrated in the following figure. VBAT (Typ.: 3.8V) PWRKEY ≥1.6s 173ms LDO5_1V8 173.5ms LDO6_1V8 LDO17_2V85 Others 438ms 40s Active Figure 8: Timing of Turning on Module NOTES 1. When the module is powered on for the first time, its timing of turning on will be 45ms longer than that shown above. 2.
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Smart LTE Module Series SC20 Hardware Design 3.5.2. Turn off Module Set the PWRKEY pin low for at least 1s, and then choose to turn off the module when the prompt window comes up. The other way to turn off the module is to drive PWRKEY to a low level for at least 8s. The module will execute forced shutdown. The forced power-down scenario is illustrated in the following figure. VBAT >8s PWRKEY Others Power down Figure 9: Timing of Turning off Module 3.6.
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Smart LTE Module Series SC20 Hardware Design VRTC Large Capacitance Capacitor RTC Core C Module Figure 11: RTC Powered by Capacitor If RTC is ineffective, it can be synchronized through network after the module is powered on. ⚫ ⚫ ⚫ ⚫ 2.0V~3.25V input voltage range and 3.0V typical value for VRTC. When VBAT is disconnected, the average consumption is about 5uA. When powered by VBAT, the RTC error is 50ppm. When powered by VRTC, the RTC error is 200ppm.
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Smart LTE Module Series SC20 Hardware Design 3.8. Battery Charge and Management SC20 module can recharge batteries. The battery charger in SC20 module supports trickle charging, constant current charging and constant voltage charging modes, which optimize the charging procedure for Li-ion batteries. ⚫ ⚫ ⚫ Trickle charging: There are two steps in this mode. When the battery voltage is below 2.8V, a 90mA trickle charging current is applied to the battery.
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Smart LTE Module Series SC20 Hardware Design If thermistor is not available in the battery, or adapter is utilized for powering module, then there is only need for VBAT and GND connection. In this case, the system may mistakenly judge that the battery temperature is abnormal, which will cause battery charging failure. In order to avoid this, VBAT_THERM should be connected to GND via a 47KΩ resistor.
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9 GND 8 GND Smart LTE Module Series SC20 Hardware Design 1 2 3 4 5 USB_VUSB USB_DM USB_DP 100nF ESD D3 ESD ESD 6 Module D2 7 D1 GND GND C1 VUSB USB_DM USB_DP USB_ID GND Figure 13: USB Interface Reference Design (OTG is not Supported) L1 R1 10K C2 6 22uF/ 10V 9 GND 8 GND 2 3 9 U1 VBAT 7 8 GPIO 1 VUSB 2 USB_DM 3 USB_DP 4 USB_ID 5 GND USB_VUSB USB_DM USB_DP USB_ID Module D2 D3 D4 C3 D1 100nF ESD ESD ESD ESD GND GND 1 VOUT VOUT AW3605DNR EN NC 7 C1 10uF SW VIN 6 4 5 1
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Smart LTE Module Series SC20 Hardware Design ⚫ ⚫ ⚫ of USB differential trace is 90Ω. Keep the ESD protection devices as close as possible to the USB connector. Pay attention to the influence of junction capacitance of ESD protection devices on USB data lines. Typically, the capacitance value should be less than 2pF. Do not route signal traces under crystals, oscillators, magnetic devices and RF signal traces.
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Smart LTE Module Series SC20 Hardware Design UART1 provides 1.8V logic level. A level translator should be used if customers’ application is equipped with a 3.3V UART interface. A level translator TXS0104PWR provided by Texas Instruments is recommended. The following figure shows the reference design. LDO5_1V8 C1 100pF VCCA VCCB U1 OE GND C2 100pF VDD_3.3V UART1_CTS A1 B1 CTS_3.3V UART1_RTS A2 B2 RTS_3.3V TXS0104EPWR UART1_TX A3 B3 TXD_3.3V UART1_RX A4 B4 RXD_3.
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Smart LTE Module Series SC20 Hardware Design 3.11. (U)SIM Interfaces SC20 provides 2 (U)SIM interfaces which circuitry meet ETSI and IMT-2000 requirements. Dual SIM Card Dual Standby is supported by default. Both 1.8V and 2.95V (U)SIM cards are supported, and the (U)SIM card interfaces are powered by the internal power supply of SC20 module. Table 13: Pin Definition of (U)SIM Interfaces Pin Name Pin No I/O Description Comment Active Low. External pull-up resistor is required.
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Smart LTE Module Series SC20 Hardware Design LD05_1V8 USIM_ VDD R1 R2 100K 10K C1 USIM_ VDD USIM_ RST Module USIM_ CLK USIM_ DET USIM_ DATA R3 R4 22R 22R R5 22R (U)SIM Card Connector 100nF VCC RST CLK C2 C3 GND VPP IO D1 C4 33pF 33pF 33pF ESD Figure 17: Reference Circuit for (U)SIM Interface with an 8-pin (U)SIM Card Connector If there is no need to use USIM_DETECT, please keep it open. The following is a reference circuit for (U)SIM interface with a 6-pin (U)SIM card connector.
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Smart LTE Module Series SC20 Hardware Design ⚫ ⚫ In order to offer good ESD protection, it is recommended to add a TVS diode array with parasitic capacitance not exceeding 50pF. The 22Ω resistors should be added in series between the module and (U)SIM card so as to suppress EMI spurious transmission and enhance ESD protection. Please note that the (U)SIM peripheral circuit should be close to the (U)SIM card connector.
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Smart LTE Module Series SC20 Hardware Design SD_LDO12 LDO5_1V8 R1 R2 R3 R4 R5 SD_LDO11 R6 120K SD_DATA2 SD_DATA3 SD_CMD R7 R8 R9 33R 33R 33R SD_CLK R10 33R R11 R12 33R 33R 1K SD_DATA0 SD_DATA1 SD_DET R13 Module NM_51K NM_51K NM_10K NM_51K NM_51K 1 2 3 4 5 6 P1-DAT2 P2-CD/DAT3 P3-CMD P4-VDD P5-CLK P6-VSS 7 P7-DAT0 8 P8-DAT1 9 DETECTIVE D1 D2 D3 D4 D5 D6 D7 C1 C2 D8 2.
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Smart LTE Module Series SC20 Hardware Design 43 SD_DATA2 14.53 44 SD_DATA3 14.57 3.13. GPIO Interfaces SC20 has abundant GPIO interfaces with logic level of 1.8V. The pin definition is listed below.
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Smart LTE Module Series SC20 Hardware Design 82 CAM1_PWD GPIO_33 B-PD: nppukp 83 CAM_I2C_SCL GPIO_30 B-PD: nppukp 84 CAM_I2C_SDA GPIO_29 B-PD: nppukp 90 GPIO_32 GPIO_32 B-PD: nppukp 91 SENSOR_I2C_SCL GPIO_7 B-PD: nppukp 92 SENSOR_I2C_SDA GPIO_6 B-PD: nppukp 93 UART2_RX GPIO_5 B-PD: nppukp 94 UART2_TX GPIO_4 B-PD: nppukp 95 KEY_VOL_UP GPIO_90 B-PD: nppukp Wakeup 96 KEY_VOL_DOWN GPIO_91 B-PD: nppukp Wakeup 97 GPIO_31 GPIO_31 B-PD: nppukp Wakeup 98 GPIO_92 GPIO
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Smart LTE Module Series SC20 Hardware Design 113 GPIO_99 GPIO_99 B-PD: nppukp 115 GPIO_95 GPIO_95 B-PD: nppukp Wakeup 116 GPIO_11 GPIO_11 B-PD: nppukp Wakeup 117 GPIO_10 GPIO_10 B-PD: nppukp 118 GPIO_9 GPIO_9 B-PD: nppukp 119 GPIO_8 GPIO_8 B-PD: nppukp 123 GPIO_16 GPIO_16 B-PD: nppukp 124 GPIO_17 GPIO_17 B-PD: nppukp NOTES 1. 2. 3. 1) B: Bidirectional digital with CMOS input. PD: nppukp=default pull-down with programmable options following the colon (:).
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Smart LTE Module Series SC20 Hardware Design 3.15. I2C Interfaces SC20 module provides three I2C interfaces which only support the master mode. As an open drain output, the I2C interfaces need a pull-up resistor on its external circuit, and the recommended logic level is 1.8V.
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Smart LTE Module Series SC20 Hardware Design NOTE When the input voltage exceeds the maximum input voltage of VBAT_SNS pin, resistor divider cannot be used in the circuit design. Instead, general purpose ADC with resistor divider input can be used. 3.17. Motor Drive Interface The pin of motor drive interface is listed below.
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Smart LTE Module Series SC20 Hardware Design 3.18. LCM Interface SC20 module provides an LCM interface meeting MIPI DSI specification. The interface supports high speed differential data transmission, with up to four lanes and a transmission rate up to 1.5Gbps per lane. It supports maximally 720P resolution displays. Table 21: Pin Definition of LCM Interface Pin Name LDO6_1V8 Pin No 125 I/O Description Comment PO 1.8V output power supply for LCM logic circuit and DSI 1.8V normal voltage. Vnorm=1.
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Smart LTE Module Series SC20 Hardware Design Four-lane MIPI DSI is needed for connection with 720P displays. The following is a reference circuit design, by taking the connection with LCM interface on LHR050H41-00 (IC: ILI9881C) from HUARUI Lighting as an example. LDO17_2V85 LDO6_1V8 LCM_LED+ LCM_LEDLCD_TE LCD_RST C1 C2 C3 4.
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Smart LTE Module Series SC20 Hardware Design VBAT PWM Backlight driving circuit 29 LCM_LED+ LCM_LED- C1 2.2uF Module Figure 22: Reference Design for External Backlight Driving Circuit 3.19. Touch Panel Interface SC20 provides a set of I2C interface for connection with Touch Panel (TP), and also provides the corresponding power supply and interrupt pins. The definition of TP interface pins is illustrated below.
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Smart LTE Module Series SC20 Hardware Design LDO17_2V85 LDO6_1V8 R1 R2 2.2K 2.2K 1 2 3 4 5 6 TP_I2C_SDA TP_I2C_SCL TP_RST TP_INT D1 D2 D3 D4 C1 C2 SDA 1.8V SCL 1.8V RESET 1.8V INT 1.8V GND VDD 2.8V D5 4.7uF 100nF Module TP Figure 23: Reference Circuit Design for TP Interface 3.20. Camera Interfaces Based on standard MIPI CSI video input interface, SC20 module supports two cameras, and the maximum pixel of the rear camera can be up to 8MP.
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Smart LTE Module Series SC20 Hardware Design IOmax=100mA LDO17_2V85 129 PO 2.
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Smart LTE Module Series SC20 Hardware Design DVDD_1V2 LDO6_1V8 VDD_AF_2V8 C1 MIPI_CSI0_LN1P 2.2K 1 2 MIPI_CSI0_LN1N C3 100nF FL1 3 6 2.
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Smart LTE Module Series SC20 Hardware Design 2.85V normal voltage. Vnorm=2.85V IOmax=300mA LDO17_2V85 129 PO 2.
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Smart LTE Module Series SC20 Hardware Design 3.20.3. Design Considerations ⚫ ⚫ ⚫ ⚫ Special attention should be paid to the definition of video device interface in schematic design. Different video devices will have varied definitions for their corresponding connectors. Assure the device and the connectors are correctly connected. MIPI are high speed signal lines, supporting maximum data rate up to 1.5Gbps. The differential impedance should be controlled as 100Ω.
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Smart LTE Module Series SC20 Hardware Design 65 12.13 MIPI_CSI0_LN0N 0.40 66 MIPI_CSI0_LN0P 12.53 67 MIPI_CSI0_LN1N 13.73 68 MIPI_CSI0_LN1P 14.49 70 MIPI_CSI1_CLKN 17.32 0.76 0.13 71 MIPI_CSI1_CLKP 17.45 72 MIPI_CSI1_LN0N 18.89 73 MIPI_CSI1_LN0P 19.24 0.35 3.21. Sensor Interfaces SC20 module supports communication with sensors via I2C interfaces, and it supports ALS/PS, compass, G-sensor, and gyroscopic sensors.
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Smart LTE Module Series SC20 Hardware Design 3.22. Audio Interfaces SC20 module provides two analog input channels and three analog output channels. The following table shows the pin definition.
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Smart LTE Module Series SC20 Hardware Design 3.22.1. Reference Circuit Design for Microphone Interfaces F1 MIC1P 0R C1 F2 NC MIC_GND MIC 0R D1 C3 Module 100pF Figure 26: Reference Circuit Design for Microphone Interfaces 3.22.2.
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Smart LTE Module Series SC20 Hardware Design 3.22.3. Reference Circuit Design for Headphone Interface R1 R2 MIC_GND C1 NM 0R 0R C2 NM R3 MIC2P 0R HPH_L F1 0R F2 0R F3 0R 1 5 4 6 3 2 R4 HS_DET 20K HPH_R HPH_GND F4 Module 0R C3 C4 33pF 33pF 33pF C5 D1 D2 D3 D4 ESD Figure 28: Reference Circuit Design for Headphone Interface 3.22.4.
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Smart LTE Module Series SC20 Hardware Design interference when the module is transmitting at EGSM900MHz. Without placing this capacitor, TDD noise could be heard. Moreover, the 10pF capacitor here is used for filtering out 1800MHz RF interference. Please note that the resonant frequency point of a capacitor largely depends on the material and production technique.
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Smart LTE Module Series SC20 Hardware Design 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 series module supports 2.4GHz/5GHz double-band WLAN wireless communication based on IEEE 802.11a/b/g/n standard protocols.
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Smart LTE Module Series SC20 Hardware Design 802.11n HT20 MCS0 -90dBm 802.11n HT20 MCS7 -72dBm 802.11n HT40 MCS0 -87dBm 802.11n HT40 MCS7 -68dBm 802.11a 6Mbps -90dBm 802.11a 54Mbps -71dBm 802.11n HT20 MCS0 -88dBm 802.11n HT20 MCS7 -69dBm 802.11n HT40 MCS0 -86dBm 802.11n HT40 MCS7 -66dBm 5GHz Referenced specifications are listed below: ⚫ ⚫ IEEE 802.11n WLAN MAC and PHY, October 2009 + IEEE 802.11-2007 WLAN MAC and PHY, June 2007 IEEE Std 802.11b, IEEE Std 802.
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Smart LTE Module Series SC20 Hardware Design Table 29: BT Data Rate and Version Version Data rate Maximum Application Throughput 1.2 1 Mbit/s >80 Kbit/s 2.0 + EDR 3 Mbit/s >80 Kbit/s 3.0 + HS 24 Mbit/s Reference 3.0 + HS 4.0 24 Mbit/s Reference 4.0 LE Comment Referenced specifications are listed below: ⚫ ⚫ Bluetooth Radio Frequency TSS and TP Specification 1.2/2.0/2.0 + EDR/2.1/2.1+ EDR/3.0/3.0 + HS, August 6, 2009 Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/4.0.
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Smart LTE Module Series SC20 Hardware Design 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 29: GNSS Performance Parameter Sensitivity (GNSS) TTFF (GNSS) Static Drift (GNSS) Description Typ.
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Smart LTE Module Series SC20 Hardware Design ⚫ ⚫ ⚫ ⚫ ⚫ Maximize the distance between the GNSS RF part and the GPRS RF part (including trace routing and antenna layout) to avoid mutual interference. In user systems, GNSS RF signal lines and RF components should be placed far away from high speed circuits, switched-mode power supplies, power inductors, the clock circuit of single-chip microcomputers, etc.
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Smart LTE Module Series SC20 Hardware Design 6 Antenna Interfaces SC20 provides four antenna interfaces for main antenna, Rx-diversity/MIMO antenna, GNSS antenna and Wi-Fi/BT antenna, respectively. The antenna ports have an impedance of 50Ω. 6.1. Main/Rx-diversity Antenna Interfaces The pin definition of main/Rx-diversity antenna interfaces is shown below. Table 30: Pin Definition of Main/Rx-diversity Antenna Interfaces Pin Name Pin No.
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Smart LTE Module Series SC20 Hardware Design LTE-FDD B1 2110~2170 1920~1980 MHz LTE-FDD B3 1805~1880 1710~1785 MHz LTE-FDD B5 869~894 824~849 MHz LTE-FDD B8 925~960 880~915 MHz LTE-TDD B38 2570~2620 2570~2620 MHz LTE-TDD B39 1880~1920 1880~1920 MHz LTE-TDD B40 2300~2400 2300~2400 MHz LTE-TDD B41 2555~2655 2555~2655 MHz Table 32: SC20-EL Module Operating Frequencies 3GPP Band Receive Transmit Unit GSM850 869~894 824~849 MHz EGSM900 925~960 880~915 MHz DCS1800 180
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Smart LTE Module Series SC20 Hardware Design LTE-TDD B40 2300~2400 2300~2400 MHz LTE-TDD B41 2555~2655 2555~2655 MHz Table 33: SC20-AL Module Operating Frequencies 3GPP Band Receive Transmit Unit GSM850 869~894 824~849 MHz PCS1900 1930~1990 1850~1910 MHz WCDMA B1 2110~2170 1920~1980 MHz WCDMA B2 1930~1990 1850~1910 MHz WCDMA B4 2110~2155 1710~1755 MHz WCDMA B5 869~894 824~849 MHz WCDMA B8 925~960 880~915 MHz LTE-FDD B2 1930~1990 1850~1910 MHz LTE-FDD B4 2110~215
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Smart LTE Module Series SC20 Hardware Design PCS1900 1930~1990 1850~1910 MHz WCDMA B1 2110~2170 1920~1980 MHz WCDMA B2 1930~1990 1850~1910 MHz WCDMA B5 869~894 824~849 MHz WCDMA B8 925~960 880~915 MHz LTE-FDD B1 2110~2170 1920~1980 MHz LTE-FDD B3 1805~1880 1710~1785 MHz LTE-FDD B5 869~894 824~849 MHz LTE-FDD B7 2620~2690 2500~2570 MHz LTE-FDD B8 925~960 880~915 MHz LTE-FDD B28 758~803 703~748 MHz LTE-TDD B40 2300~2400 2300~2400 MHz Table 35: SC20-JL Module Op
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Smart LTE Module Series SC20 Hardware Design NOTE 1) The bandwidth of LTE-TDD B41 for SC20-JL is 110MHz (2545MHz~2655MHz), and the corresponding channel range is 40140~41240. 6.1.2. Main and Rx-diversity Antenna Interfaces Reference Design A reference circuit design for main and Rx-diversity antenna interfaces is shown as below. A π-type matching circuit should be reserved for better RF performance.
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Smart LTE Module Series SC20 Hardware Design Figure 32: Microstrip Design on a 2-layer PCB Figure 33: Coplanar Waveguide Design on a 2-layer PCB Figure 34: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) SC20_Hardware_Design 79 / 130
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Smart LTE Module Series SC20 Hardware Design Figure 35: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) In order to ensure RF performance and reliability, the following principles should be complied with in RF layout design: ⚫ ⚫ ⚫ ⚫ ⚫ Use an impedance simulation tool to accurately control the characteristic impedance of RF traces to 50Ω. The GND pins adjacent to RF pins should not be designed as thermal relief pads, and should be fully connected to ground.
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Smart LTE Module Series SC20 Hardware Design Table 37: Wi-Fi/BT Frequency Type Frequency Unit 802.11a/b/g/n 2400~2482 5180~5825 MHz BT4.2 LE 2402~2480 MHz NOTE The supported Wi-Fi frequencies of SC20-JL are 2400MHz~2496MHz and 5180MHz~5825MHz. A reference circuit design for Wi-Fi/BT antenna interface is shown as below. A π-type matching circuit should be reserved for better RF performance.
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Smart LTE Module Series SC20 Hardware Design Table 39: GNSS Frequency Type Frequency Unit GPS 1575.42±1.023 MHz GLONASS 1597.5~1605.8 MHz BeiDou 1561.098±2.046 MHz 6.3.1. Recommended Circuit for Passive Antenna GNSS antenna interface supports passive ceramic antennas and other types of passive antennas. A reference circuit design is given below.
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Smart LTE Module Series SC20 Hardware Design VCC Active Antenna R1 C3 R2 ANT_GNSS Module C4 0R NM C1 C2 1uF 100pF 10R L1 56nH C5 100pF NM Figure 38: Reference Circuit Design for GNSS Active Antenna 6.4. Antenna Installation 6.4.1. Antenna Requirements The following table shows the requirement on main antenna, RX-diversity antenna, Wi-Fi/BT antenna and GNSS antenna.
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Smart LTE Module Series SC20 Hardware Design Input Impedance (Ω): 50 Polarization Type: Vertical Cable Insertion Loss: < 1dB Frequency range: 1559MHz~1609MHz Polarization: RHCP or linear VSWR: < 2 (Typ.) Passive Antenna Gain: > 0dBi Active Antenna Noise Figure: < 1.5dB Active Antenna Total Gain: < 17dBi (Typ.) GNSS NOTE 1) It is recommended to use a passive GNSS antenna when LTE B13 or B14 is supported, as the use of active antenna may generate harmonics which will affect the GNSS performance. 6.4.2.
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Smart LTE Module Series SC20 Hardware Design Figure 40: Mechanicals of U.FL-LP Connectors The following figure describes the space factor of mated connector. Figure 41: Space Factor of Mated Connectors (Unit: mm) For more details, please visit http://www.hirose.com.
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Smart LTE Module Series SC20 Hardware Design 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 41: 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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Smart LTE Module Series SC20 Hardware Design IVBAT Peak supply current (during transmission slot) USB_VBUS USB detection VRTC Power supply voltage of backup battery. Maximum power control level at EGSM900. 1.8 3.0 A 4.35 5.0 6.3 V 2.0 3.0 3.25 V 7.3. Charging Performance Specifications Table 43: Charging Performance Specifications Parameter Min. Typ. Max. Unit Trickle charging-A current 81 90 99 mA Trickle charging-A threshold voltage range (15.62mV steps) 2.5 2.796 2.
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Smart LTE Module Series SC20 Hardware Design 7.4. Operation and Storage Temperatures The operating temperature is listed in the following table. Table 44: Operation and Storage Temperatures Parameter Min. Typ. Max. Unit Operating temperature range 1) -35 +25 +65 ºC Extended temperature range 2) -40 +75 ºC Storage Temperature Range -40 +90 ºC NOTES 1. 2. 1) Within operation temperature range, the module is 3GPP compliant.
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Smart LTE Module Series SC20 Hardware Design WCDMA supply current LTE-FDD supply current LTE-TDD supply current GSM voice call EVDO/CDMA voice call WCDMA voice call SC20_Hardware_Design Sleep (USB disconnected) @DRX=6 3.30 mA Sleep (USB disconnected) @DRX=7 2.79 mA Sleep (USB disconnected) @DRX=8 2.49 mA Sleep (USB disconnected) @DRX=9 2.33 mA Sleep (USB disconnected) @DRX=5 5.60 mA Sleep (USB disconnected) @DRX=6 3.83 mA Sleep (USB disconnected) @DRX=7 3.
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Smart LTE Module Series SC20 Hardware Design EDGE data transfer EVDO/CDMA data transfer B8 (max power) @22.74dBm 580 mA EGSM900 (1UL/4DL) @26.29dBm 220 mA EGSM900 (2UL/3DL) @26.15dBm 330 mA EGSM900 (3UL/2DL) @26.06dBm 420 mA EGSM900 (4UL/1DL) @25.92dBm 530 mA DCS1800 (1UL/4DL) @24.89dBm 180 mA DCS1800 (2UL/3DL) @24.74dBm 270 mA DCS1800 (3UL/2DL) @24.54dBm 360 mA DCS1800 (4UL/1DL) @24.44dBm 450 mA BC0 (max power) @23.68dBm 560 mA B1 (HSDPA) @21.64dBm 540 mA B8 (HSDPA) @21.
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Smart LTE Module Series SC20 Hardware Design Table 46: SC20-EL Current Consumption Parameter Description Conditions Typ. Unit OFF state Power down 20 uA Sleep (USB disconnected) @DRX=2 3.58 mA Sleep (USB disconnected) @DRX=5 2.46 mA Sleep (USB disconnected) @DRX=9 2.13 mA Sleep (USB disconnected) @DRX=6 2.99 mA Sleep (USB disconnected) @DRX=7 2.35 mA Sleep (USB disconnected) @DRX=8 2.01 mA Sleep (USB disconnected) @DRX=9 1.85 mA Sleep (USB disconnected) @DRX=5 5.
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Smart LTE Module Series SC20 Hardware Design WCDMA voice call GPRS data transfer SC20_Hardware_Design EGSM900 PCL=5 @33.07dBm 271.2 mA EGSM900 PCL=12 @19.53dBm 137.3 mA EGSM900 PCL=19 @5.59dBm 110.6 mA DCS1800 PCL=0 @30.00dBm 203.0 mA DCS1800 PCL=7 @16.45dBm 150.7 mA DCS1800 PCL=15 @0.67dBm 130.8 mA PCS1900 PCL=0 @29.72dBm 195.9 mA PCS1900 PCL=7 @16.72dBm 151.3 mA PCS1900 PCL=15 @0.98dBm 130.0 mA B1 (max power) @23.18dBm 544.1 mA B5 (max power) @23.22dBm 513.
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Smart LTE Module Series SC20 Hardware Design EDGE data transfer SC20_Hardware_Design DCS1800 (2UL/3DL) @29.86dBm 314.3 mA DCS1800 (3UL/2DL) @29.73dBm 420.8 mA DCS1800 (4UL/1DL) @29.63dBm 531.7 mA PCS1900 (1UL/4DL) @29.77dBm 199.3 mA PCS1900 (2UL/3DL) @29.64dBm 307.2 mA PCS1900 (3UL/2DL) @29.54dBm 411.5 mA PCS1900 (4UL/1DL) @29.34dBm 518.7 mA GSM850 (1UL/4DL) @26.75dBm 172.2 mA GSM850 (2UL/3DL) @27.13dBm 266.6 mA GSM850 (3UL/2DL) @26.63dBm 353.1 mA GSM850 (4UL/1DL) @26.
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Smart LTE Module Series SC20 Hardware Design WCDMA data transfer LTE data transfer PCS1900 (3UL/2DL) @26.11dBm 349.6 mA PCS1900 (4UL/1DL) @25.70dBm 442.3 mA B1 (HSDPA) @22.43dBm 503.8 mA B5 (HSDPA) @22.23dBm 471.6 mA B8 (HSDPA) @22.24dBm 481.6 mA B1 (HSUPA) @22.30dBm 504.6 mA B5 (HSUPA) @21.93dBm 460.5 mA B8 (HSUPA) @21.90dBm 464.8 mA LTE-FDD B1 @23.29dBm 737 mA LTE-FDD B3 @23.29dBm 756 mA LTE-FDD B5 @23.44dBm 636 mA LTE-FDD B7 @23.28dBm 842 mA LTE-FDD B8 @23.
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Smart LTE Module Series SC20 Hardware Design WCDMA supply current FDD-LTE supply current GSM voice call WCDMA voice call GPRS data transfer SC20_Hardware_Design Sleep (USB disconnected) DRX=5 3.10 mA Sleep (USB disconnected) DRX=9 2.77 mA Sleep (USB disconnected) DRX=6 3.86 mA Sleep (USB disconnected) DRX=7 2.90 mA Sleep (USB disconnected) DRX=8 2.55 mA Sleep (USB disconnected) DRX=9 2.43 mA Sleep (USB disconnected) DRX=5 6.60 mA Sleep (USB disconnected) DRX=6 4.
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Smart LTE Module Series SC20 Hardware Design EDGE data transfer WCDMA data transfer SC20_Hardware_Design GSM850 (2UL/3DL) @32.00dBm 410.70 mA GSM850 (3UL/2DL) @30.43dBm 496.10 mA GSM850 (4UL/1DL) @29.37dBm 573.90 mA PCS1900 (1UL/4DL) @29.13dBm 198.70 mA PCS1900 (2UL/3DL) @29.19dBm 306.50 mA PCS1900 (3UL/2DL) @29.05dBm 408.90 mA PCS1900 (4UL/1DL) @28.84dBm 514.60 mA GSM850 (1UL/4DL) @26.39dBm 186.00 mA GSM850 (2UL/3DL) @26.30dBm 280.00 mA GSM850 (3UL/2DL) @26.30dBm 368.
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Smart LTE Module Series SC20 Hardware Design LTE data transfer B2 (HSUPA) @22.4dBm 545.60 mA B4 (HSUPA) @21.93dBm 527.93 mA B5 (HSUPA) @22.26dBm 528.94 mA B8 (HSUPA) @22 dBm 507.70 mA LTE-FDD B2 @23.05dBm 710.01 mA LTE-FDD B4 @23.3dBm 736.50 mA LTE-FDD B5 @23.13dBm 626.18 mA LTE-FDD B7 @22.75dBm 733.40 mA LTE-FDD B12 @22.74dBm 606.02 mA LTE-FDD B13 @23.3dBm 674.84 mA LTE-FDD B25 @23.2dBm 665.62 mA LTE-FDD B26 @23.57dBm 718.
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Smart LTE Module Series SC20 Hardware Design DRX=8 LTE-FDD supply current LTE-TDD supply current GSM voice call SC20_Hardware_Design Sleep (USB disconnected) DRX=9 1.75 mA Sleep (USB disconnected) DRX=5 5.29 mA Sleep (USB disconnected) DRX=6 3.59 mA Sleep (USB disconnected) DRX=7 2.76 mA Sleep (USB disconnected) DRX=8 2.24 mA Sleep (USB disconnected) DRX=5 5.52 mA Sleep (USB disconnected) DRX=6 3.71 mA Sleep (USB disconnected) DRX=7 2.76 mA Sleep (USB disconnected) DRX=8 2.
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Smart LTE Module Series SC20 Hardware Design WCDMA voice call GPRS data transfer SC20_Hardware_Design PCS1900 PCL=15 @1.09dBm 130 mA B1 (max power) @23.33dBm 561 mA B2 (max power) @23.51dBm 521 mA B5 (max power) @23.37dBm 551 mA B8 (max power) @23.38dBm 478 mA GSM850 (1UL/4DL) @32.91dBm 267 mA GSM850 (2UL/3DL) @32.26dBm 388 mA GSM850 (3UL/2DL) @30.72dBm 503 mA GSM850 (4UL/1DL) @29.38dBm 574 mA EGSM900 (1UL/4DL) @32.92dBm 266 mA EGSM900 (2UL/3DL) @32.
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Smart LTE Module Series SC20 Hardware Design EDGE data transfer WCDMA data transfer SC20_Hardware_Design GSM850 (1UL/4DL) @26.70dBm 166 mA GSM850 (2UL/3DL) @27.02dBm 300 mA GSM850 (3UL/2DL) @26.60dBm 389 mA GSM850 (4UL/1DL) @26.33dBm 457 mA EGSM900 (1UL/4DL) @26.87dBm 178 mA EGSM900 (2UL/3DL) @27.27dBm 276 mA EGSM900 (3UL/2DL) @26.85dBm 394 mA EGSM900 (4UL/1DL) @26.53dBm 490 mA DCS1800 (1UL/4DL) @25.39dBm 197 mA DCS1800 (2UL/3DL) @25.40dBm 287 mA DCS1800 (3UL/2DL) @25.
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Smart LTE Module Series SC20 Hardware Design LTE data transfer B2 (HSUPA) @23.19dBm 509 mA B5 (HSUPA) @22.44dBm 503 mA B8 (HSUPA) @22.25dBm 474 mA LTE-FDD B1 @23.37dBm 698 mA LTE-FDD B3 @23.06dBm 709 mA LTE-FDD B5 @23.25dBm 643 mA LTE-FDD B7 @22.82dBm 802 mA LTE-FDD B8 @23.47dBm 620 mA LTE-FDD B28 @23.13dBm 756 mA LTE-TDD B40 @23.24dBm 388 mA Table 49: SC20-JL Current Consumption Parameter Description Conditions Typ.
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Smart LTE Module Series SC20 Hardware Design DRX=8 LTE-TDD supply current WCDMA voice call WCDMA data transfer LTE data transfer SC20_Hardware_Design Sleep (USB disconnected) DRX=5 5.40 mA Sleep (USB disconnected) DRX=6 3.53 mA Sleep (USB disconnected) DRX=7 2.62 mA Sleep (USB disconnected) DRX=8 2.17 mA B1 (max power) @22.80dBm 460 mA B6 (max power) @23.09dBm 505 mA B8 (max power) @23.02dBm 504 mA B19 (max power) @23.07dBm 505 mA B1 (HSDPA) @22.13dBm 482 mA B6 (HSDPA) @22.
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Smart LTE Module Series SC20 Hardware Design LTE-FDD B19 @23.42dBm 642 mA LTE-FDD B26 @23.36dBm 645 mA LTE-TDD B41 @23.23dBm 451 mA 7.6. RF Output Power The following table shows the RF output power of SC20 module. Table 50: RF Output Power Frequency Max. Min.
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Smart LTE Module Series SC20 Hardware Design LTE-FDD B1 23dBm±2dB <-39dBm LTE-FDD B2 23dBm±2dB <-39dBm LTE-FDD B3 23dBm±2dB <-39dBm LTE-FDD B4 23dBm±2dB <-39dBm LTE-FDD B5 23dBm±2dB <-39dBm LTE-FDD B7 23dBm±2dB <-39dBm LTE-FDD B8 23dBm±2dB <-39dBm LTE-FDD B12 23dBm±2dB <-39dBm LTE-FDD B13 23dBm±2dB <-39dBm LTE-FDD B18 23dBm±2dB <-39dBm LTE-FDD B19 23dBm±2dB <-39dBm LTE-FDD B20 23dBm±2dB <-39dBm LTE-FDD B25 23dBm±2dB <-39dBm LTE-FDD B26 23dBm±2dB <-39dBm LTE-FDD B28
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Smart LTE Module Series SC20 Hardware Design 7.7. RF Receiving Sensitivity The following table shows the RF receiving sensitivity of SC20 module. Table 51: SC20-CE R1.1 RF Receiving Sensitivity Frequency Receive Sensitivity (Typ.) 3GPP (SIMO) Primary Diversity SIMO EGSM900 -109dBm / / -102dBm DCS1800 -109dBm / / -102dBm WCDMA B1 -110dBm / / -106.7dBm WCDMA B8 -110dBm / / -103.
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Smart LTE Module Series SC20 Hardware Design Table 52: SC20-EL RF Receiving Sensitivity Frequency Receive Sensitivity (Typ.) 3GPP (SIMO) Primary Diversity SIMO GSM850 -109dBm / / -102dBm EGSM900 -109dBm / / -102dBm DCS1800 -109dBm / / -102dBm PCS1900 -109dBm / / -102dBm WCDMA B1 -110dBm / / -106.7dBm WCDMA B5 -110dBm / / -104.7dBm WCDMA B8 -110dBm / / -103.7dBm LTE-FDD B1 (10M) -98dBm -99dBm -102dBm -96.3dBm LTE-FDD B3 (10M) -97dBm -98dBm -101dBm -93.
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Smart LTE Module Series SC20 Hardware Design WCDMA B4 -110dBm -110dBm -113dBm -106.7dBm WCDMA B5 -110dBm -111dBm -113dBm -104.7dBm WCDMA B8 -110dBm / / -103.7dBm LTE-FDD B2 (10M) -98dBm -99dBm -102dBm -94.3dBm LTE-FDD B4 (10M) -97.5dBm -98dBm -101dBm -96.3dBm LTE-FDD B5 (10M) -99.5dBm -99.5dBm -102.5dBm -94.3dBm LTE-FDD B7 (10M) -97dBm -99dBm -100dBm -94.3dBm LTE-FDD B12 (10M) -98.5dBm -98.5dBm -101dBm -93.3dBm LTE-FDD B13 (10M) -96.5dBm -99dBm -101dBm -93.
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Smart LTE Module Series SC20 Hardware Design LTE-FDD B7 (10M) -97dBm -99dBm -100.6dBm -94.3dBm LTE-FDD B8 (10M) -98dBm -100dBm -102dBm -93.3dBm LTE-FDD B28 (10M) -97.5dBm -100dBm -101.8dBm -94.8dBm LTE-TDD B40 (10M) -97dBm -98dBm -100.7dBm -96.3dBm Table 55: SC20-JL RF Receiving Sensitivity Frequency Receive Sensitivity (Typ.) 3GPP (SIMO) Primary Diversity SIMO WCDMA B1 -110dBm -110dBm -113dBm -106.7dBm WCDMA B6 -110dBm -112dBm -113dBm -106.
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Smart LTE Module Series SC20 Hardware Design Table 56: ESD Characteristics ( Temperature: 25ºC, Humidity: 45%) Tested Points Contact Discharge Air Discharge Unit VBAT, GND +/-5 +/-10 KV All Antenna Interfaces +/-5 +/-10 KV USB Interface +/-0.5 +/-1 KV Other Interfaces +/-0.
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Smart LTE Module Series SC20 Hardware Design 8 Mechanical Dimensions This chapter describes the mechanical dimensions of the module. All dimensions are measured in millimeter (mm), and the tolerances for dimensions without tolerance values are ±0.05mm. 8.1.
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Smart LTE Module Series SC20 Hardware Design Figure 43: Module Bottom Dimensions (Top View) SC20_Hardware_Design 111 / 130
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Smart LTE Module Series SC20 Hardware Design 8.2. Recommended Footprint Figure 44: Recommended Footprint (Top View) NOTES 1. 2. For easy maintenance of the module, keep about 3mm between the module and other components on host PCB. All RESERVED pins should be kept open and MUST NOT be connected to ground.
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Smart LTE Module Series SC20 Hardware Design 8.3. Top and Bottom Views of the Module Figure 45: Top View of the Module Figure 46: Bottom View of the Module NOTE These are renderings of SC20 module. For authentic dimension and appearance, please refer to the module that you receive from Quectel.
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Smart LTE Module Series SC20 Hardware Design 9 Storage, Manufacturing and Packaging 9.1. Storage SC20 is stored in a vacuum-sealed bag. It is rated at MSL 3, and its storage restrictions are shown as below. 1. Shelf life in the vacuum-sealed bag: 12 months at <40ºC/90%RH. 2. After the vacuum-sealed bag is opened, devices that will be subjected to reflow soldering or other high temperature processes must be: ⚫ ⚫ 3. Devices require baking before mounting, if any circumstance below occurs. ⚫ ⚫ 4.
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Smart LTE Module Series SC20 Hardware Design 9.2. Manufacturing and Soldering Push the squeegee to apply the solder paste on the surface of stencil, thus making the paste fill the stencil openings and then penetrate to the PCB. The force on the squeegee should be adjusted properly so as to produce a clean stencil surface on a single pass. To ensure the module soldering quality, the thickness of stencil for the module is recommended to be 0.18mm~0.20mm.
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Smart LTE Module Series SC20 Hardware Design Soak time (between A and B: 150°C and 200°C) 60 to 120 sec Reflow Zone Max slope 2 to 3°C/sec Reflow time (D: over 220°C) 40 to 60 sec Max temperature 240°C ~ 245°C Cooling down slope 1 to 4°C/sec Reflow Cycle Max reflow cycle SC20_Hardware_Design 1 116 / 130
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Smart LTE Module Series SC20 Hardware Design 9.3. Packaging SC20 is packaged in tape and reel carriers. Each reel is 12.32m long and contains 200 modules. The following figures show the package details, measured in mm.
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Smart LTE Module Series SC20 Hardware Design Table 58: 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: 7.68kg G.W: 13.
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Smart LTE Module Series SC20 Hardware Design 10 Appendix A References Table 59: Related Documents SN Document Name Remark [1] Quectel_Smart_EVB_User_Guide Smart EVB user guide [2] Quectel_RF_Layout_Application_Note RF layout application note [3] Quectel_Module_Secondary_SMT_User_Guide Module secondary SMT user guide [4] Quectel_SC20_Reference_Design SC20 reference design Table 60: Terms and Abbreviations Abbreviation Description ADC Analog-to-Digital Converter AMR Adaptive Multi-rate A
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Smart LTE Module Series SC20 Hardware Design ESD Electrostatic Discharge FR Full Rate GMSK Gaussian Minimum Shift Keying GPS Global Positioning System GSM Global System for Mobile Communications HR Half Rate HSPA High Speed Packet Access I/O Input/Output LNA Low Noise Amplifier MO Mobile Originated MS Mobile Station (GSM engine) MT Mobile Terminated PCB Printed Circuit Board PDU Protocol Data Unit PSK Phase Shift Keying QAM Quadrature Amplitude Modulation QPSK Quadrature Ph
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Smart LTE Module Series SC20 Hardware Design TP Touch Panel TX Transmit UART Universal Asynchronous Receiver & Transmitter UMTS Universal Mobile Telecommunications System (U)SIM Universal Subscriber Identity Module Vmax Maximum Voltage Value Vnorm Normal Voltage Value Vmin Minimum Voltage Value VIHmin Minimum Input High Level Voltage Value VILmax Maximum Input Low Level Voltage Value VOHmax Maximum Output High Level Voltage Value VOHmin Minimum Output High Level Voltage Value VSWR
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Smart LTE Module Series SC20 Hardware Design 11 Appendix B GPRS Coding Schemes Table 61: 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.
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Smart LTE Module Series SC20 Hardware Design 12 Appendix C 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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Smart LTE Module Series SC20 Hardware Design 15 5 5 NA 16 6 6 NA 17 7 7 NA 18 8 8 NA 19 6 2 NA 20 6 3 NA 21 6 4 NA 22 6 4 NA 23 6 6 NA 24 8 2 NA 25 8 3 NA 26 8 4 NA 27 8 4 NA 28 8 6 NA 29 8 8 NA 30 5 1 6 31 5 2 6 32 5 3 6 33 5 4 6 SC20_Hardware_Design 124 / 130
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Smart LTE Module Series SC20 Hardware Design 13 Appendix D EDGE Modulation and Coding Schemes Table 63: 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.
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Smart LTE Module Series SC20 Hardware Design 2、 the RF trace of the test board which was used in the FCC test is defined as below. 3、 the characteristic impedence depends on the dielectric of PCB, the trace width and the grand plane spacing,Coated Coplanar Line is required.the detail simulation as below.
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Smart LTE Module Series SC20 Hardware Design 4、 the RF trace of the test board which was used in the FCC test is defined as below.