FC20-N Series Hardware Design Wi-Fi Module Series Rev. FC20-N_Series_Hardware_Design_V1.0 Date: 2016-11-02 www.quectel.
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FC20-N Series Hardware Design About the Document History Revision Date Author Description 1.
FC20-N Series Hardware Design Contents About the Document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 Table Index ................................................................................................................................................
FC20-N Series Hardware Design 4.5. 4.6. RF Performance .................................................................................................................... 32 Electrostatic Discharge.......................................................................................................... 34 5 Mechanical Dimensions .................................................................................................................... 35 5.1. Mechanical Dimensions of the Module ...............
FC20-N Series Hardware Design Table Index TABLE 1: FC20 SERIES PRODUCTS ................................................................................................................ 7 TABLE 2: KEY FEATURES ............................................................................................................................... 10 TABLE 3: I/O PARAMETERS DEFINITION ....................................................................................................... 15 TABLE 4: PIN DESCRIPTION ....
FC20-N Series Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM OF FC20-N MODULE ............................................................................ 11 FIGURE 2: PIN ASSIGNMENT OF FC20 SERIES MODULE ........................................................................... 14 FIGURE 3: REFERENCE CIRCUIT FOR VDD_3V3 ........................................................................................ 19 FIGURE 4: TIMING OF POWER ON/OFF THE FC20 SERIES MODULE ............................
FC20-N 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.
FC20-N 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.
FC20-N Series Hardware Design 2 Product Concept 2.1. General Description FC20-N module is a low-power and low-cost wireless module based on QCA9377-3. FC20-N module only supports 1×1 IEEE 802.11 b/g/n WLAN standards. 2.2. Directives and Standards The FC20-N module is designed to comply with the FCC statements. FCC ID: XMR201703FC20N The Host system using FC20-N should have label “contains FCC ID: XMR201701FC20N 2.2.1.
FC20-N Series Hardware Design interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between theequipment and receiver.
FC20-N Series Hardware Design RoHS All hardware components are fully compliant with EU RoHS directive NOTES 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.
FC20-N Series Hardware Design Please keep these pins open in FC20-N. 2.5. Evaluation Board In order to help customers to develop applications with FC20-N 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].
FC20-N Series Hardware Design 3 Application Interfaces 3.1. General Description FC20-N module is equipped with 38 LCC pads and 14 LGA pads that can be connected to the cellular application platform.
FC20-N Series Hardware Design GND RESERVED GND RESERVED RESERVED RESERVED WAKE_ON_WIRELESS 38 37 36 35 34 33 32 3.2.
FC20-N Series Hardware Design 3.3. Pin Description The following tables show the pin definition of FC20 series. 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=3.14V Vnorm=3.
FC20-N 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=-0.3V VILmax=0.54V VIHmin=1.
FC20-N 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=1.26V VIHmax=2.0V 1.
FC20-N 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.
FC20-N 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].
FC20-N 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.
FC20-N 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.
FC20-N 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.
FC20-N Series Hardware Design 3.6. 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. Table 9: Pin Definition of Coexistence Interface Pin Name Pin No. I/O Description Comment LTE_UART_TXD 5 DO LTE coexistence signal If unused, keep this pin open. LTE_UART_RXD 6 DI LTE coexistence signal If unused, keep this pin open.
FC20-N Series Hardware Design Table 10: 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. 3.7.2. 32KHz_IN Interface The 32KHz clock is used in low power mode such as IEEE power saving mode and sleep mode. It serves as a timer to determine when to wake up FC20 series module to receive beacons in various power saving schemes, and to maintain basic logic operations when in sleep mode.
FC20-N Series Hardware Design RF_ANT 30 GND 31 IO 50Ω impedance RF antenna pad Ground 3.8.2. Operating Frequency Table 13: Operating Frequency of the Module Feature Frequency Unit WLAN-2.4GHz 2.412~2.462 GHz 3.8.3. Reference Design FC20 series module provides an RF antenna pad for antenna connection. The RF trace in host PCB connected to the module’s RF antenna pad should be microstrip line or other types of RF trace, whose characteristic impendence should be close to 50Ω.
FC20-N Series Hardware Design Table 14: Antenna Cable Requirements Type Requirements 2.412~2.462GHz Cable insertion loss <1dB Table 15: Antenna Requirements Type Requirements Frequency Range 2.412~2.462GHz VSWR <2:1 recommended Gain (dBi) 1 typical Max Input Power (W) 50 Input Impedance (Ω) 50 Polarization Type Vertical 3.8.5. 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.
FC20-N Series Hardware Design Customers can use U.FL-LP serial connector listed in the following figure to match the UF.L-R-SMT. Figure 10: Mechanicals of UF.
FC20-N Series Hardware Design For more details, please visit http://www.hirose.com.
FC20-N 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.
FC20-N Series Hardware Design The following table shows the recommended operating conditions for FC20 series module. Table 17: 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). Table 18: General DC Electrical Characteristics Symbol Parameter Min. Max.
FC20-N Series Hardware Design Description Conditions IWLAN_3V3 IVIO Unit Idle AT+QWIFI=1 66 6.5 mA Table 20: 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 @14.5dBm 291 mA TX HT40-MCS7 @12.
FC20-N 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.
FC20-N 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 22: 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.
FC20-N Series Hardware Design 802.11n, HT40, MCS7 -68 Table 24: 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.
FC20-N Series Hardware Design 5 Mechanical Dimensions This chapter describes the mechanical dimensions of FC20 series module. 5.1.
FC20-N Series Hardware Design Figure 13: FC20 Bottom Dimensions (Unit: mm) FC20-N_Series_Hardware_Design 47 Confidential / Released 36 /
FC20-N Series Hardware Design 5.2.
FC20-N 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 15: 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.
FC20-N Series Hardware Design 5.3. Top and Bottom View of the Module Figure 16: Top View of the Module Figure 17: 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.
FC20-N 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.
FC20-N 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].
FC20-N 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.
FC20-N Series Hardware Design Figure 20: Reel Dimensions (Unit: mm) Table 25: Reel Packaging Model Name FC20-N 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.
FC20-N Series Hardware Design 7 Appendix A References Table 26: 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.
FC20-N 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 Be Determined TX T
FC20-N 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-N_Series_Hardware_Design 47 Confidential / Released 46 /
