Quectel FC905A User Manual
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Quectel FC905A User Manual

Wi-fi&bluetooth module
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FC905A
User Manual
Wi-Fi&Bluetooth Module Series
Version: 1.0.1
Date: 2022-08-05
Status: Preliminary

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Summary of Contents for Quectel FC905A

  • Page 1 FC905A User Manual Wi-Fi&Bluetooth Module Series Version: 1.0.1 Date: 2022-08-05 Status: Preliminary...
  • Page 2 Wi-Fi&Bluetooth Module Series At Quectel, our aim is to provide timely and comprehensive services to our customers. If you require any assistance, please contact our headquarters: Quectel Wireless Solutions Co., Ltd. Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai...
  • Page 3 Privacy Policy To implement module functionality, certain device data are uploaded to Quectel’s or third-party’s servers, including carriers, chipset suppliers or customer-designated servers. Quectel, strictly abiding by the relevant laws and regulations, shall retain, use, disclose or otherwise process relevant data for the purpose of performing the service only or as permitted by applicable laws.

  • Page 4: Safety Information

    Manufacturers of the cellular terminal should notify users and operating personnel of the following safety information by incorporating these guidelines into all manuals of the product. Otherwise, Quectel assumes no liability for customers’ failure to comply with these precautions.

  • Page 5: Table Of Contents

    Wi-Fi&Bluetooth Module Series Contents Safety Information ............................ 3 Contents ..............................4 Table Index ............................... 6 Figure Index .............................. 7 Introduction ............................8 1.1. Special Marks ......................... 12 Product Overview ..........................13 2.1. General Description ........................ 13 2.2. Key Features .......................... 13 2.3.
  • Page 6 Wi-Fi&Bluetooth Module Series Electrical Characteristics & Reliability ..................36 4.1. General Description ........................ 36 4.2. Absolute Maximum Ratings & Recommended Operating Conditions ........36 4.3. I/O Interface Characteristics ....................37 4.4. Power Consumption ....................... 37 4.5. Wi-Fi RF Performances ......................38 4.5.1.
  • Page 7 Table 18: Pin Definition of SDIO_VSEL ....................29 Table 19: Pin Definition of GPIOs ......................30 Table 20: FC905A Operating Frequency ....................30 Table 21: Pin Definition of RF Antenna Interfaces ................... 30 Table 22: Antenna Cable Requirements ....................33 Table 23: Antenna Requirements ......................
  • Page 8 Figure 18: Space Factor of Mated Connector (Unit: mm) ................ 35 Figure 19: Top and Side Dimensions (Top and Side View) ..............43 Figure 22: Top & Bottom View of FC905A ....................44 Figure 23: Recommended Reflow Soldering Thermal Profile ..............46 Figure 24: Carrier Tape Dimension Drawing ..................

  • Page 9: Introduction

    Wi-Fi&Bluetooth Module Series Introduction This document defines the FC905A and describes its air interfaces and hardware interfaces which are connected with your application. 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.
  • Page 10 Important Note notice that any deviation(s) from the defined parameters of the antenna trace, as described by the instructions, require that the host product manufacturer must notify to Quectel Wireless Solutions Co., Ltd that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by the USI, or the host manufacturer can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application.
  • Page 11 Wi-Fi&Bluetooth Module Series Radiation Exposure Statement: This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. Dé claration d'exposition aux radiations: Cet é...
  • Page 12 Wi-Fi&Bluetooth Module Series maintained between the antenna and users. The final end product must be labeled in a visible area with the following: “Contains IC: 10224A-2022FC905A”. Plaque signalétique du produit final Ce module émetteur est autorisé uniquement pour une utilisation dans un dispositif où l'antenne peut être installée de telle sorte qu'une distance de 20cm peut être maintenue entre l'antenne et les utilisateurs.

  • Page 13: Special Marks

    Wi-Fi&Bluetooth Module Series band 5725-5850 MHz shall be such that the equipment still complies with the e.i.r.p. limits as appropriate; iii. where applicable, antenna type(s), antenna models(s), and worst-case tilt angle(s) necessary to remain compliant with the e.i.r.p. elevation mask requirement set forth in section 6.2.2.3 shall be clearly indicated.

  • Page 14: Product Overview

    802.11a/b/g/n/ac WLAN standards and Bluetooth 5.0 standard which enables seamless integration of WLAN and Bluetooth low energy technologies. With a SDIO 3.0 interface for WLAN, a UART and a PCM interface for Bluetooth, FC905A can provide WLAN and Bluetooth functions.
  • Page 15 Wi-Fi&Bluetooth Module Series  802.11n: HT20 (MCS0–MCS7) 5 GHz:  802.11a: 6 Mbps, 9 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps, 54 Mbps  802.11n: HT20 (MCS0–MCS7), HT40 (MCS0–MCS7)  802.11ac: VHT20 (MCS0–MCS8), VHT40 (MCS0–MCS9), VHT80 (MCS0–MCS9) 2.4 GHz: ...

  • Page 16: Evb

    FC905A supports internal crystal or external crystal. 2.3. EVB To help customers to develop applications with FC905A, the evaluation board tools include EVB board (FC905A-M.2 and corresponding TE-A), USB 2.0 data cable, antenna and other external devices used to control and test the module. For details, see document [1].

  • Page 17: Application Interfaces

    Wi-Fi&Bluetooth Module Series Application Interfaces 3.1. General Description FC905A is equipped with 44 LCC pins. The subsequent chapters will provide a detailed introduction to the following interfaces and pins of the module:  Power supply  WLAN application interface ...

  • Page 18: Pin Assignment

    Wi-Fi&Bluetooth Module Series 3.2. Pin Assignment ANT_WIFI0/BT RESERVED RESERVED RESERVED RESERVED SDIO_VSEL FC905A PCM_SYNC HOST_WAKE_BT BT_WAKE_HOST PCM_DIN PCM_CLK RESERVED PCM_DOUT VBAT XTAL_IN WLAN_SLP_CLK XTAL_OUT VIN_LDO Power WLAN Bluetooth XTAL Others GPIO RESERVED Figure 1: Pin Assignment (Top View) NOTE Keep all RESERVED pins open.

  • Page 19: Pin Description

    Wi-Fi&Bluetooth Module Series 3.3. Pin Description The following tables show the pin description of FC905A. Table 3: I/O Parameters Definition Type Description Analog Input/Output Digital Input Digital Output Digital Input/Output Power Input Power Output Table 4: Pin Description Power Supply Pin Name Pin No.
  • Page 20 Wi-Fi&Bluetooth Module Series SDIO_DATA2 SDIO data bit 2/NC SDIO_DATA3 SDIO data bit 3/NC SDIO_CMD SDIO command VIO power domain. Supports 1-bit or 4-bit mode. SDIO_CLK SDIO clock SDIO_DATA0 SDIO data bit 0 SDIO_DATA1 SDIO data bit 1/IRQ Bluetooth Application Interface Pin Name Pin No.

  • Page 21: Power Supply

    3.4. Power Supply 3.4.1. Power Supply Pins Introduction The following table shows the power supply pins and ground pins of FC905A. JTAG mode can be configured by configuring GPIO1/GPIO2. If you need, please contact the QUECTEL team. FC905A_Hardware_Design 20 / 51...

  • Page 22: Buck Circuit Pins Introduction

    1, 3, 20, 31, 33, 36 Ground The FC905A is powered by VBAT. It is recommended to use a power chip with a maximum output current of more than 0.5 A. To ensure better power supply performance, it is recommended to parallel 100 μF decoupling capacitors and 1 μF and 100 nF filter capacitors near the input of the module VBAT.

  • Page 23: Wlan Application Interface

    The following figure shows the WLAN application interface connection between FC905A and the host. HOST FC905A SDIO SDIO WLAN_EN WLAN_EN WLAN_WAKE WALN_WAKE Figure 3: WLAN Application Interface Connection 3.5.1. SDIO Interface FC905A is used for SDIO 3.0 interface, supports 1-bit mode or 4-bit mode (automatic detection when FC905A_Hardware_Design 22 / 51...
  • Page 24 SDIO command SDIO_CLK SDIO clock SDIO clock SDIO_DATA0 SDIO data bit 0 SDIO data bit 0 SDIO_DATA1 SDIO data bit 1 The following figure shows the SDIO interface connection between FC905A and host. HOST FC905A SDIO_CLK SDIO_CLK SDIO_CMD SDIO_CMD SDIO_DATA0 SDIO_D0...

  • Page 25: Wlan_En

    VIO power domain. WLAN_WAKE Wake up the host by Wi-Fi If unused, keep it open. 3.6. Bluetooth Application Interface The following figure shows the block diagram of Bluetooth application interface connection between FC905A and a host. FC905A_Hardware_Design 24 / 51...

  • Page 26: Uart Interface

    Figure 5: Block Diagram of Bluetooth Application Interface Connection 3.6.1. UART Interface FC905A supports an HCI UART as defined in Bluetooth Core Specification Version 5.1. The UART supports hardware flow control, and it is used for data transmission with host. It supports up to 4.0 Mbps baud rates.

  • Page 27: Bt_En

    Figure 6: Reference Design for UART Interface Connection NOTE When paired with Quectel's LTE modules (EC21 series and EC25 series), it may be their own CTS connected to CTS and RTS connected to RTS. This depends on the input and output directions, so in principle, when connected, the input corresponds to the output.

  • Page 28: Pcm Interface

    PCM_CLK PCM clock VIO power domain. If unused, keep them open. PCM_DIN PCM data input PCM_SYNC PCM data frame sync The following figure shows the PCM interface connection between FC905A and the host. HOST FC905A PCM_DOUT PCM_DIN PCM_SYNC PCM_SYNC PCM_DIN...

  • Page 29: Other Interfaces

    The 32.768 kHz sleep clock is used in low power modes, such as IEEE power saving mode and sleep mode. It serves as a timer to determine when to wake up the FC905A to receive signals in various power saving schemes, and to maintain basic logic operations when the module is in sleep mode.

  • Page 30: Xtal_In/Out

    3.3 V: pull-down and connect to GND through 10 kΩ resistor 3.7.4. GPIOs GPIO1/GPIO2 are function configuration pins, which can be used to enter JTAG mode. Please contact QUECTEL if necessary. FC905A offers 4 GPIOs by default: FC905A_Hardware_Design 29 / 51...

  • Page 31: Rf Antenna Interfaces

    GPIO4 3.8. RF Antenna Interfaces ANT_WIFI0/BT is the RF antenna pin, and the RF port requires 50 Ω characteristic impedance. 3.8.1. Operating Frequency The operating frequency of FC905A is shown in the following. Table 20: FC905A Operating Frequency Feature Frequency Unit –...

  • Page 32: Reference Design

    PCB connected to the module’s RF antenna pin should be microstrip line or other types of RF trace, with characteristic impendence close to 50 Ω. FC905A comes with grounding pins which are next to the antenna pin in order to give a better grounding.
  • Page 33 Wi-Fi&Bluetooth Module Series Figure 10: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) Figure 11: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) To ensure RF performance and reliability, the following principles should be complied with RF layout design: ...

  • Page 34: Requirements For Antenna Design

    Wi-Fi&Bluetooth Module Series 3.8.5. Requirements for Antenna Design The antenna design requirements are as follows: Table 22: Antenna Cable Requirements Type Requirements 2.412–2.472 GHz Cable insertion loss < 1 dB 5.150–5.875 GHz The antenna requirements are as follows: Table 23: Antenna Requirements Type Requirements 2.412–2.472 GHz...
  • Page 35 Wi-Fi&Bluetooth Module Series Figure 12: Dimensions of the U.FL-R-SMT Connector (Unit: mm) U.FL-LP serial connectors listed in the following figure can be used to match the U.FL-R-SMT Figure 13: Mechanicals of U.FL-LP Connectors The following figure describes the space factor of mated connector. FC905A_Hardware_Design 34 / 51...
  • Page 36 Wi-Fi&Bluetooth Module Series Figure 14: Space Factor of Mated Connector (Unit: mm) For more information, please visit http://www.hirose.com. FC905A_Hardware_Design 35 / 51...

  • Page 37: Electrical Characteristics & Reliability

    Wi-Fi&Bluetooth Module Series Electrical Characteristics & Reliability 4.1. General Description This chapter mainly introduces the electrical characteristics and radio frequency characteristics of FC905A, the specific content is as follows:  Absolute maximum ratings & recommended operating conditions  I/O interface characteristics ...

  • Page 38: I/O Interface Characteristics

    Wi-Fi&Bluetooth Module Series 1.71 1.8/3.3 3.63 4.3. I/O Interface Characteristics The following table shows the general DC electrical characteristics over recommended operating conditions (unless otherwise specified). Table 26: General DC Electrical Characteristics Symbol Parameter Min. Max. Unit High-level Input Voltage 0.7 ×...

  • Page 39: Wi-Fi Rf Performances

    TX (5 GHz) @ VHT80 MCS0 TX (5 GHz) @ VHT80 MCS9 4.5. Wi-Fi RF Performances The following tables summarize the Wi-Fi transmitting and receiving performances of FC905A. 4.5.1. Conducted RF Output Power Table 28: Conducted RF Output Power at 2.4 GHz Description Typ.

  • Page 40: Conducted Rf Receiving Sensitivity

    Wi-Fi&Bluetooth Module Series ±1.5 dB 802.11n, HT20 @ MCS0 ±1.5 dB 802.11n, HT20 @ MCS7 Table 29: Conducted RF Output Power at 5 GHz Description Typ. Unit Accuracy ±1.5 dB 802.11a @ 6 Mbps ±1.5 dB 802.11a @ 54 Mbps ±1.5 dB 802.11n, HT20 @ MCS0 ±1.5 dB...

  • Page 41: Bluetooth Rf Performance

    802.11ac, VHT40 @ MCS0 ±1.5 dB 802.11ac, VHT40 @ MCS9 ±1.5 dB 802.11ac, VHT80 @ MCS0 ±1.5 dB 802.11ac, VHT80 @ MCS9 4.6. Bluetooth RF Performance The following tables summarize the transmitting and receiving performances of FC905A. FC905A_Hardware_Design 40 / 51...

  • Page 42: Conducted Rf Output Power

    Wi-Fi&Bluetooth Module Series 4.6.1 Conducted RF Output Power Table 31: Conducted RF Output Power Description Min. Typ. Unit GFSK π/4-DQPSK 8-DQPSK BLE_1M 4.6.2 Conducted RF Receiving Sensitivity Table 32: Conducted RF Receiving Sensitivity at 2.4 GHz Description Receiving Sensitivity (Typ.) GFSK -88 dBm -92 dBm...
  • Page 43 Wi-Fi&Bluetooth Module Series Tested Interfaces Contact Discharge Air Discharge Unit VBAT、GND ANT_WIFI0/BT FC905A_Hardware_Design 42 / 51...

  • Page 44: Mechanical Information

    Wi-Fi&Bluetooth Module Series 5 Mechanical Information This chapter describes the mechanical dimensions of FC905A. All dimensions are measured in millimeter (mm), and the dimensional tolerances are ±0.2 mm unless otherwise specified. 5.6 Mechanical Dimensions Pin 1 Figure 15: Top and Side Dimensions (Top and Side View)

  • Page 45: Top And Bottom Views

    Figure 16: Top & Bottom View of FC905A NOTE Images above are for illustration purpose only and may differ from the actual module. For authentic appearance and label, please refer to the module received from Quectel. FC905A_Hardware_Design 44 / 51...

  • Page 46: Storage, Manufacturing & Packaging

    Wi-Fi&Bluetooth Module Series 6 Storage, Manufacturing & Packaging 6.6 Storage Conditions The module is provided with vacuum-sealed packaging. MSL of the module is rated as 3. The storage requirements are shown below. 1. Recommended Storage Condition: The temperature should be 23 ± 5 ° C and the relative humidity should be 35–60 %.

  • Page 47: Manufacturing And Soldering

    Wi-Fi&Bluetooth Module Series NOTE 1. To avoid blistering, layer separation and other soldering issues, extended exposure of the module to the air is forbidden. 2. Take out the module from the package and put it on high-temperature-resistant fixtures before baking. All modules must be soldered to PCB within 24 hours after the baking, otherwise put them in the drying oven.
  • Page 48 4. Avoid using ultrasonic technology for module cleaning since it can damage crystals inside the module. 5. Due to the complexity of the SMT process, please contact Quectel Technical Supports in advance for any situation that you are not sure about, or any process (e.g. selective soldering, ultrasonic soldering) that is not mentioned in document [3].

  • Page 49: Packaging Specifications

    Wi-Fi&Bluetooth Module Series 6.8 Packaging Specifications The module adopts carrier tape packaging and details are as follow: 6.8.1 Carrier Tape Dimension details are as follow: Figure 18: Carrier Tape Dimension Drawing Table 35: Carrier Tape Dimension Table (Unit: mm) 0.35 12.4 12.4 11.5...

  • Page 50: Packaging Process

    Wi-Fi&Bluetooth Module Series Table 36: Plastic Reel Dimension Table (Unit: mm) øD1 øD2 24.5 6.8.3 Packaging Process Place the module into the carrier tape and use the cover tape to cover it; then wind the heat-sealed carrier tape to the plastic reel and use the protective tape for protection.

  • Page 51: Appendix References

    Wi-Fi&Bluetooth Module Series 7 Appendix References Table 37: Related Documents Document Name Quectel_UMTS&LTE_EVB_User_Guide Quectel_RF_Layout_Application_Note Quectel_Module_Secondary_SMT_Application_Note Table 38: Terms and Abbreviations Abbreviation Description Access Point Bluetooth Low Energy BPSK Binary Phase Shift Keying Bluetooth Complementary Code Keying Clear To Send DQPSK Differential Quadrature Reference Phase Shift Keying GATT Generic Attribute Profile...
  • Page 52 Wi-Fi&Bluetooth Module Series Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying Radio Frequency RoHS Restriction of Hazardous Substances Spike-triggered average Request to Send Receive Data To Be Determined Transmit Data UART Universal Asynchronous Receiver/Transmitter Universal Serial Bus Maximum High-level Input Voltage Minimum High-level Input Voltage Maximum Low-level Input Voltage Minimum Low-level Input Voltage...

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