FC20 Series Hardware Design Wi-Fi&BT Module Series Rev. FC20_Series_Hardware_Design_V1.0 Date: 2016-11-02 www.quectel.
Wi-Fi&BT Module Series FC20 Series Hardware Design Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters: Quectel Wireless Solutions Co., Ltd. Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233 Tel: +86 21 5108 6236 Email: info@quectel.com Or our local office. For more information, please visit: http://www.quectel.com/support/salesupport.
Wi-Fi&BT Module Series FC20 Series Hardware Design About the Document History Revision Date Author Description 1.
Wi-Fi&BT Module Series FC20 Series Hardware Design Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 Table Index ...........................................................................................................................
Wi-Fi&BT Module Series FC20 Series Hardware Design 4.5. 4.6. RF Performance .................................................................................................................... 35 Electrostatic Discharge.......................................................................................................... 37 5 Mechanical Dimensions .................................................................................................................... 38 5.1.
Wi-Fi&BT Module Series FC20 Series Hardware Design Table Index TABLE 1: FC20 SERIES PRODUCTS ................................................................................................................ 7 TABLE 2: KEY FEATURES ................................................................................................................................ 11 TABLE 3: I/O PARAMETERS DEFINITION .......................................................................................................
Wi-Fi&BT Module Series FC20 Series Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM OF FC20 SERIES MODULE ................................................................. 12 FIGURE 2: PIN ASSIGNMENT OF FC20 SERIES MODULE ........................................................................... 15 FIGURE 3: REFERENCE CIRCUIT FOR VDD_3V3 ........................................................................................ 20 FIGURE 4: TIMING OF POWER ON/OFF THE FC20 SERIES MODULE .............
Wi-Fi&BT Module Series FC20 Series Hardware Design 1 Introduction This document defines the FC20 series module and describes its hardware interface which is connected with the customer’s application as well as its air interface. The document can help customers quickly understand module interface specifications, as well as the electrical and mechanical details. Associated with application note and user guide, customers can use FC20 series module to design and set up mobile applications easily.
Wi-Fi&BT Module Series FC20 Series Hardware Design Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is switched off. The operation of wireless appliances in an aircraft is forbidden, so as to prevent interference with communication systems. Consult the airline staff about the use of wireless devices on boarding the aircraft, if your device offers an Airplane Mode which must be enabled prior to boarding an aircraft.
Wi-Fi&BT Module Series FC20 Series Hardware Design 2 Product Concept 2.1. General Description FC20 module is a low-power and low-cost wireless module based on QCA9377-3. FC20 module supports 1×1 IEEE 802.11 a/b/g/n/ac WLAN standards and BT 4.1, enabling seamless integration of WLAN/BT and low-energy technology. FC20 supports a low-power SDIO 3.0 interface for WLAN and a UART/PCM interface for BT, and also supports LTE-WLAN coexistence and LTE-BT coexistence. The BT function of FC20 is under development.
Wi-Fi&BT Module Series FC20 Series Hardware Design Note: 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. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Wi-Fi&BT Module Series FC20 Series Hardware Design The following table describes the detailed features of FC20 module. Table 2: Key Features Features Implementation Power Supply Main supply voltage: 3.3V, 500mA IO supply voltage: 1.8V FC20: Transmission Data 802.11b: 1, 2, 5.5, 11Mbps 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps 802.11n: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65Mbps 802.11a: 6, 9, 12, 18, 24, 36, 48, 54Mbps 802.11ac: VHT20 (MCS0-8), VHT40 (MCS0-9), VHT80 (MCS0-9) FC20: 802.
Wi-Fi&BT Module Series FC20 Series Hardware Design 1. 2. 1) Within operation temperature range, the module is IEEE compliant. Within extended temperature range, the module remains the ability for data transmission. 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.
Wi-Fi&BT Module Series FC20 Series Hardware Design The functions in dotted line are only supported by FC20. 2.5. Evaluation Board In order to help customers to develop applications with FC20 series module, Quectel supplies an evaluation board (EVB), a RS-232 to USB cable, a USB data cable, a power adapter, 4 antennas and other peripherals to control or test the module. For details, please refer to document [1].
Wi-Fi&BT Module Series FC20 Series Hardware Design 3 Application Interfaces 3.1. General Description FC20 module is equipped with 38 LCC pads and 14 LGA pads that can be connected to the cellular application platform.
Wi-Fi&BT Module Series FC20 Series Hardware Design GND RESERVED GND RESERVED RESERVED RESERVED WAKE_ON_WIRELESS 38 37 36 35 34 33 32 3.2.
Wi-Fi&BT Module Series FC20 Series Hardware Design 3.3. Pin Description The following tables show the pin definition of FC20. Table 3: I/O Parameters Definition Type Description IO Bidirectional input/output DI Digital input DO Digital output PI Power input Table 4: Pin Description Power Supply Pin Name VDD_3V3 Pin No. 21 VIO 11 GND 1, 12, 20, 28, 29, 31, 36, 38~40, 43~45, 48~52 I/O Description DC Characteristics Comment PI Main power supply for module Vmax=3.46V Vmin=3.
Wi-Fi&BT Module Series FC20 Series Hardware Design VIHmin=1.26V VIHmax=2.0V SDIO_D3 SDIO_D2 SDIO_D1 SDIO_D0 SDIO_CLK SDIO_CMD 22 23 24 25 26 IO IO IO IO DI SDIO data pin bit 3 VOLmax=0.18V VOHmin=1.62V VILmin=-0.3V VILmax=0.54V VIHmin=1.26V VIHmax=2.0V 1.8V power domain SDIO data pin bit 2 VOLmax=0.18V VOHmin=1.62V VILmin=-0.3V VILmax=0.54V VIHmin=1.26V VIHmax=2.0V 1.8V power domain. Require external pull-up to 1.8V. SDIO data pin bit 1 VOLmax=0.18V VOHmin=1.62V VILmin=-0.
Wi-Fi&BT Module Series FC20 Series Hardware Design PCM_IN PCM_SYNC PCM_CLK PCM_OUT BT_UART_ RTS BT_UART_ CTS BT_UART_ TXD BT_UART_ RXD 13 14 15 16 7 8 17 18 Bluetooth PCM data input VILmin=-0.3V VILmax=0.54V VIHmin=1.26V VIHmax=2.0V 1.8V power domain. If unused, keep this pin open. Bluetooth PCM data frame sync signal VILmin=-0.3V VILmax=0.54V VIHmin=1.26V VIHmax=2.0V 1.8V power domain. If unused, keep this pin open. DI Bluetooth PCM clock VILmin=-0.3V VILmax=0.54V VIHmin=1.
Wi-Fi&BT Module Series FC20 Series Hardware Design RF_ANT 30 IO WLAN and BT antenna 50Ω impedance. Pin No. I/O Description DC Characteristics Comment DO Software debugging VOLmax=0.18V VOHmin=1.62V 1.8V power domain. If unused, keep this pin open. DI Low power. External 32.768KHz clock input is required in sleep mode. VILmin=-0.3V VILmax=0.54V VIHmin=1.26V VIHmax=2.0V 1.8V power domain. If unused, keep this pin open.
Wi-Fi&BT Module Series FC20 Series Hardware Design 28, 29, 31, 36, 38~40, 43~45, 48~52 FC20 series is powered by VDD_3V3, and it is recommended to use power supply chip whose maximum output current is more than 1.2A. The following figure shows a reference design for VDD_3V3, which is controlled by PM_ENABLE. And PM_ENABLE should be connected to pin 127 of EC20 R2.0/EC21/EC25. For more details, please refer to document [2], [3] or [4].
Wi-Fi&BT Module Series FC20 Series Hardware Design The following figure shows the recommended power on/off sequences for FC20 series. VIO >0 >0 PM_ENABLE VDD_3V3 TBD ≥ 5us WLAN_EN BT_EN Module Status Power up Power down Runnig Figure 4: Timing of Power ON/OFF the FC20 Series Module Execute AT command AT+QWIFI=1 to open VDD_3V3 and WLAN. 3.5. WLAN Interface The following figure shows the WLAN interface connection between FC20 series and EC20 R2.0/EC21/EC25.
Wi-Fi&BT Module Series FC20 Series Hardware Design 3.5.1. WAKE_ON_WIRELESS Interface WAKE_ON_WIRELESS interface is used to wake up the EC20 R2.0/EC21/EC25. When WAKE_ON_WIRELESS is pulled down, EC20 R2.0/EC21/EC25 can be woken up. Table 6: Pin Definition of WAKE_ON_WIRELESS Pin Name Pin No. WAKE_ON_WIRELESS 32 I/O DO Description Comment Wake up host Active low. If unused, keep this pin open. 3.5.2. WLAN_EN WLAN_EN is used to control the WLAN function of FC20 series.
Wi-Fi&BT Module Series FC20 Series Hardware Design 1.8V. SDIO_D1 24 IO SDIO data pin bit 1 1.8V power domain SDIO_D0 25 IO SDIO data pin bit 0 1.8V power domain SDIO_CLK 26 DI SDIO clock 1.8V power domain SDIO_CMD 27 IO SDIO command 1.8V power domain The following figure shows the SDIO interface connection between FC20 series and EC20 R2.0/EC21/EC25.
Wi-Fi&BT Module Series FC20 Series Hardware Design 3.6. BT Interface BT function is only supported by FC20. Please keep these pins open in FC20-N. The following figure shows the block diagram of BT interface connection between FC20 and EC20 R2.0/EC21/EC25. If BT interface of FC20 module is used, the UART and PCM interfaces of EC20 R2.0/EC21/EC25 must be used. UART UART PCM PCM FC20 EC20 R2.0/ EC21/EC25 BT_EN BT_EN Figure 7: Block Diagram of BT Interface Connection 3.6.1.
Wi-Fi&BT Module Series FC20 Series Hardware Design Table 10: Pin Definition of PCM Interface Pin Name Pin No. I/O Description Comment PCM_IN 13 DI PCM data input 1.8V power domain PCM_SYNC 14 IO PCM data frame sync signal 1.8V power domain PCM_CLK 15 IO PCM data bit clock 1.8V power domain PCM_OUT 16 DO PCM data output 1.8V power domain The following figure shows the reference design for PCM interface. PCM_CLK PCM_CLK PCM_SYNC PCM_SYNC FC20 EC20 R2.
Wi-Fi&BT Module Series FC20 Series Hardware Design The following figure shows the reference design for UART interface connection between FC20 and EC20 R2.0/EC21/EC25. TXD RXD RXD TXD RTS RTS CTS CTS FC20 EC20 R2.0/ EC21/EC25 Figure 9: Reference Design for UART Interface Connection 3.7. Coexistence Interface Coexistence function is only supported by FC20. Please keep these pins open in FC20-N. The following table shows the pin definition of FC20’s coexistence interface.
Wi-Fi&BT Module Series FC20 Series Hardware Design NOTE LTE-BT coexistence function is under development. 3.8. Other Interfaces 3.8.1. DBG_TXD Interface DBG_TXD interface can be used for log output. Table 13: Pin Definition of DBG_TXD Interface Pin Name Pin No. I/O Description Comment DBG_TXD 4 DO Software debugging If unused, keep this pin open. 3.8.2. 32KHz_IN Interface The 32KHz clock is used in low power mode such as IEEE power saving mode and sleep mode.
Wi-Fi&BT Module Series FC20 Series Hardware Design 3.9. Antenna Interface The pin 30 is the RF antenna pad. And the RF interface has an impedance of 50Ω. 3.9.1. Pin Definition of the RF Antenna Table 15: Pin Definition of the RF Antenna Pin Name Pin No. I/O GND 28 Ground GND 29 Ground RF_ANT 30 GND 31 IO Description Comment 50Ω impedance RF antenna pad Ground 3.9.2. Operating Frequency Table 16: Operating Frequency of the Module Feature Frequency Unit WLAN-2.4GHz 2.412~2.
Wi-Fi&BT Module Series FC20 Series Hardware Design R1 RF_ANT 0R FC20 Series C1 NM C2 NM Figure 11: Reference Circuit for RF Antenna Interface 3.9.4. Antenna Requirements The following table shows the requirements on RF antenna. Table 17: Antenna Cable Requirements Type Requirements 2.412~2.462GHz Cable insertion loss <1dB 5.18~5.825GHz Cable insertion loss <1dB Table 18: Antenna Requirements Type Requirements Frequency Range 2.412~2.462GHz 5.18~5.
Wi-Fi&BT Module Series FC20 Series Hardware Design 3.9.5. Install the Antenna with RF Connector The following figure is the antenna installation with RF connector provided by HIROSE. The recommended RF connector is UF.L-R-SMT. Figure 12: Dimensions of the UF.L-R-SMT Connector (Unit: mm) Customers can use U.FL-LP serial connector listed in the following figure to match the UF.L-R-SMT. Figure 13: Mechanicals of UF.
Wi-Fi&BT Module Series FC20 Series Hardware Design The following figure describes the space factor of mated connector Figure 14: Space Factor of Mated Connector (Unit: mm) For more details, please visit http://www.hirose.com.
Wi-Fi&BT Module Series FC20 Series Hardware Design 4 Electrical, Reliability and Radio Characteristics 4.1. General Description This chapter mainly introduces the electrical and the radio frequency characteristics of FC20 series module, which are listed in detail in the following chapters: Electrical characteristics I/O interface characteristics Current consumption RF performance Electrostatic discharge 4.2. Electrical Characteristics The following table shows the absolute maximum ratings.
Wi-Fi&BT Module Series FC20 Series Hardware Design The following table shows the recommended operating conditions for FC20 series module. Table 20: Recommended Operating Conditions Parameter Min. Typ. Max. Unit VDD_3V3 3.14 3.3 3.46 V VIO 1.71 1.8 1.89 V 4.3. I/O Interface Characteristics The following table shows the general DC electrical characteristics over recommended operating conditions (unless otherwise specified).
Wi-Fi&BT Module Series FC20 Series Hardware Design Description Conditions IWLAN_3V3 IVIO Unit Idle AT+QWIFI=1 66 6.5 mA Table 23: Current Consumption of the Module Description Conditions IWLAN_3V3 Unit TX 1Mbps @17.5dBm 370 mA TX 11Mbps @17.2dBm 357 mA RX 1Mbps 48 mA RX 11Mbps 49 mA TX 6Mbps @16dBm 328 mA TX 54Mbps @14.8dBm 245 mA RX 6Mbps 49 mA RX 54Mbps 50 mA TX HT20-MCS0 @15.8dBm 322 mA TX HT20-MCS7 @13.5dBm 234 mA TX HT40-MCS0 @14.
Wi-Fi&BT Module Series FC20 Series Hardware Design Description 802.11ac Conditions IWLAN_3V3 Unit TX VHT20 MCS0 @13.2dBm 378 mA TX VHT20 MCS8 @12.5dBm 289 mA TX VHT40 MCS0 @13.5dBm 372 mA TX VHT40 MCS9 @10.5dBm 244 mA TX VHT80 MCS0 @13dBm 355 mA TX VHT80 MCS9 @10dBm 220 mA RX VHT20 MCS0 78 mA RX VHT20 MCS8 78 mA RX VHT40 MCS0 85 mA RX VHT40 MCS9 84 mA RX VHT80 MCS8 92 mA RX VHT80 MCS9 91 mA NOTE OFF state: Execute AT+QWIFI=0 to bring the module to this state.
Wi-Fi&BT Module Series FC20 Series Hardware Design 802.11g @6Mbps 15 15.5 dBm 802.11g @54Mbps 14.5 15 dBm 802.11n, HT20 @MCS0 15 15.5 dBm 802.11n, HT20 @MCS7 13.5 14 dBm Table 25: Conducted RF Output Power at 5GHz Frequency Min. Typ. Unit 802.11a @6Mbps 13 13.5 dBm 802.11a @54Mbps 12.5 13 dBm 802.11ac, HT20 @MCS0 13 13.5 dBm 802.11ac, HT20 @MCS7 12.5 13 dBm 802.11ac, HT40 @MCS0 13 13.5 dBm 802.11ac, HT40 @MCS7 10.5 11 dBm 802.11ac, HT80 @MCS0 13 13.5 dBm 802.
Wi-Fi&BT Module Series FC20 Series Hardware Design 802.11n, HT40, MCS7 -68 Table 27: Conducted RF Receiving Sensitivity at 5GHz Frequency Receive Sensitivity (Typ.) 802.11a, 6Mbps TBD 802.11a, 54Mbps -68 802.11ac,VHT20, MCS0 TBD 802.11ac,VHT20, MCS8 -68 802.11ac, VHT40, MCS0 TBD 802.11ac, VHT40, MCS9 -62 802.11ac, VHT80, MCS0 TBD 802.11ac, VHT80, MCS9 -57 4.6. Electrostatic Discharge The module is not protected against Electrostatic Discharge (ESD) in general.
Wi-Fi&BT Module Series FC20 Series Hardware Design 5 Mechanical Dimensions This chapter describes the mechanical dimensions of FC20 series module. 5.1.
Wi-Fi&BT Module Series FC20 Series Hardware Design Figure 16: FC20 Bottom Dimensions (Unit: mm) FC20_Series_Hardware_Design Confidential / Released 39 / 47
Wi-Fi&BT Module Series FC20 Series Hardware Design 5.2.
Wi-Fi&BT Module Series FC20 Series Hardware Design The recommended stencil design for FC20 series is shown as below. To ensure the module soldering quality, the thickness of stencil for the module is recommended to be 0.18mm. Figure 18: Recommended Stencil (Unit: mm) NOTES 1. For easy maintenance of the module, please keep about 3mm between the module and other components in host PCB. 2. Keep the RESERVED pins unconnected.
Wi-Fi&BT Module Series FC20 Series Hardware Design 5.3. Top and Bottom View of the Module Figure 19: Top View of the Module Figure 20: Bottom View of the Module NOTE These are design effect drawings of FC20 series module. For more accurate pictures, please refer to the module that you get from Quectel.
Wi-Fi&BT Module Series FC20 Series Hardware Design 6 Storage, Manufacturing and Packaging 6.1. Storage FC20 series module is stored in a vacuum-sealed bag. The storage restrictions are shown as below. 1. Shelf life in the vacuum-sealed bag: 12 months at <40ºC and <90% RH. 2. After the vacuum-sealed bag is opened, devices that need to be mounted directly must be: Mounted within 72 hours at the factory environment of ≤30ºC and <60%RH. Stored at <10% RH. 3.
Wi-Fi&BT Module Series FC20 Series Hardware Design 6.2. 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. For more details, please refer to document [5].
Wi-Fi&BT Module Series FC20 Series Hardware Design 6.3. Packaging FC20 module is packaged in a vacuum-sealed bag which is ESD protected. The bag should not be opened until the devices are ready to be soldered onto the application. 6.3.1. Tape and Reel Packaging FC20 is packaged in tape and reel carriers. The figures below show the packaging details.
Wi-Fi&BT Module Series FC20 Series Hardware Design Figure 23: Reel Dimensions (Unit: mm) Table 28: Reel Packaging Model Name FC20 MOQ for MP Minimum Package: 250pcs Minimum Package × 4=1000pcs 250pcs Size: 370mm × 350mm × 56mm N.W: 0.203kg G.W: 0.945kg Size: 380mm × 250mm × 365mm N.W: 0.81kg G.W: 4.
Wi-Fi&BT Module Series FC20 Series Hardware Design 7 Appendix A References Table 29: Related Documents SN Document Name Remark [1] Quectel_FC20_EVB_User_Guide FC20 EVB user guide [2] Quectel_EC25_Reference_Design EC25 reference design [3] Quectel_EC21_Reference_Design EC21 reference design [4] Quectel_EC20_R2.0_Reference_Design EC20 R2.
Wi-Fi&BT Module Series FC20 Series Hardware Design LTE Long Term Evolution Mbps Million Bits Per Second MCS Modulation and Coding Scheme MOQ Minimum Order Quantity MP Manufacture Product PCB Printed Circuit Board PCM Pulse Code Modulation QAM Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying RF Radio Frequency RH Relative Humidity RoHS Restriction of Hazardous Substances RTS Request To Send RX Receive Direction SDIO Secure Digital Input and Output Card TBD To
Wi-Fi&BT Module Series FC20 Series Hardware Design VIO Voltage for Input/Output Port VOLmax Maximum Output Low Level Voltage Value VOHmin Minimum Output High Level Voltage Value VSWR Voltage Standing Wave Ratio Wi-Fi Wireless-Fidelity WLAN Wireless Local Area Networks FC20_Series_Hardware_Design Confidential / Released 49 / 47
