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Wi-Fi&Bluetooth Module Series

FC905A_Hardware_Design 22 / 51

VIN_LDO_OUT/VIN_LDO is the output and input pins of the buck circuit inside the module, and pin 20 is

the dedicated GND pin of the buck circuit. Because the buck circuit is prone to high-frequency noise,

special attention should be paid to it. It is recommended to use 2.2

μH inductors such as

TFM201610ALM-2R2MTAA (TDK) and 4.7

μF capacitors to ensure that the traces are as short as

possible and the trace width should not be less than 0.4 mm. At the same time, it is recommended to

route the wires away from sensitive signals.

Table 7: Recommended Inductance Parameters

3.5. WLAN Application Interface

The following figure shows the WLAN application interface connection between FC905A and the host.

HOST

FC905A

SDIO

WLAN_EN

WLAN_EN

WALN_WAKE

WLAN_WAKE

SDIO

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

VIN_LDO

23

Internal buck input for the module

-

1.35 V

-

GND

20

Buck circuit dedicated GND pin

Parameter

Recommend

Unit

Inductance

2.2

μH

Tolerance

±20 %

DCR

< 0.2

Ω

Rated current (based on temperature rise

）

1.15

A

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Содержание FC905A

Страница 1: ...FC905A User Manual Wi Fi Bluetooth Module Series Version 1 0 1 Date 2022 08 05 Status Preliminary ...

Страница 2: ...cially reasonable efforts to provide the best possible experience you hereby acknowledge and agree that this document and related services hereunder are provided to you on an as available basis We may revise or restate this document from time to time at our sole discretion without any prior notice to you Copyright Our and third party products hereunder may contain copyrighted material Such copyrig...

Страница 3: ...iers 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 Before data interaction with third parties please be informed of their privacy and data security policy Disclaimer a We acknowledge no liability for any injury...

Страница 4: ...se interference on sensitive medical equipment so please be aware of the restrictions on the use of wireless devices when in hospitals clinics or other healthcare facilities Cellular terminals or mobiles operating over radio signal and cellular network cannot be guaranteed to connect in certain conditions such as when the mobile bill is unpaid or the U SIM card is invalid When emergency help is ne...

Страница 5: ...ck Circuit Pins Introduction 21 3 5 WLAN Application Interface 22 3 5 1 SDIO Interface 22 3 5 2 WLAN_EN 24 3 5 3 WLAN_WAKE 24 3 6 Bluetooth Application Interface 24 3 6 1 UART Interface 25 3 6 2 BT_EN 26 3 6 3 BT_WAKE_HOST and HOST_WAKE_BT 26 3 6 4 PCM Interface 27 3 7 Other Interfaces 28 3 7 1 WLAN_SLP_CLK 28 3 7 2 XTAL_IN OUT 29 3 7 3 SDIO_VSEL 29 3 7 4 GPIOs 29 3 8 RF Antenna Interfaces 30 3 8 ...

Страница 6: ...ted RF Output Power 38 4 5 2 Conducted RF Receiving Sensitivity 39 4 6 Bluetooth RF Performance 40 4 6 1 Conducted RF Output Power 41 4 6 2 Conducted RF Receiving Sensitivity 41 4 7 ESD 41 5 Mechanical Information 43 5 6 Mechanical Dimensions 43 5 7 Top and Bottom Views 44 6 Storage Manufacturing Packaging 45 6 6 Storage Conditions 45 6 7 Manufacturing and Soldering 46 6 8 Packaging Specifications...

Страница 7: ...tion 29 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 33 Table 24 Absolute Maximum Ratings 36 Table 25 Recommended Operating Conditions 36 Table 26 General DC Electrical Characteristics 37 Table 27 Power Consum...

Страница 8: ... 13 Coplanar Waveguide Design on a 2 layer PCB 31 Figure 14 Coplanar Waveguide Design on a 4 layer PCB Layer 3 as Reference Ground 32 Figure 15 Coplanar Waveguide Design on a 4 layer PCB Layer 4 as Reference Ground 32 Figure 16 Dimensions of the U FL R SMT Connector Unit mm 34 Figure 17 Mechanicals of U FL LP Connectors 34 Figure 18 Space Factor of Mated Connector Unit mm 35 Figure 19 Top and Side...

Страница 9: ... complies with FCC radiation exposure limits set forth for an uncontrolled environment In order to avoid the possibility of exceeding the FCC radio frequency exposure limits human proximity to the antenna shall not be less than 20cm 8 inches during normal operation This transmitter must not be co located or operating in conjunction with any other antenna or transmitter Any changes or modifications...

Страница 10: ...ntennas and or higher gain antennas may require additional authorization for operation 4 The max allowed antenna gain is WIFI 2 4G BT 0 52dBi WIFI 5G 0 66 dBi for external antenna In the event that these conditions cannot be met for example certain laptop configurations or co location with another transmitter then the FCC authorization is no longer considered valid and the FCC ID IC ID cannot be u...

Страница 11: ...u une distance de 20 cm est respecté e entre l antenne et les utilisateurs et 2 Le module é metteur peut ne pas ê tre coï mplantéavec un autre é metteur ou antenne Tant que les 2 conditions ci dessus sont remplies des essais supplé mentaires sur l é metteur ne seront pas né cessaires Toutefois l inté grateur OEM est toujours responsable des essais sur son produit final pour toutes exigences de con...

Страница 12: ... operational failure Note that this is not intended to prohibit transmission of control or signaling information or the use of repetitive codes where required by the technology Caution i The device for operation in the band 5150 5250 MHz is only for indoor use to reduce the potential for harmful interference to co channel mobile satellite systems ii where applicable antenna type s antenna models s...

Страница 13: ...ed 1 1 Special Marks Table 1 Special Marks Mark Definition Unless otherwise specified when an asterisk is used after a function feature interface pin name AT command or argument it indicates that the function feature interface pin AT command or argument is under development and currently not supported and the asterisk after a model indicates that the sample of such model is currently unavailable B...

Страница 14: ...PCM interface for Bluetooth FC905A can provide WLAN and Bluetooth functions 2 2 Key Features The following table describes the key features of FC905A Table 2 Key Features Features Details Power Supply VBAT power supply Supply voltage range 3 13 4 8 V Typical supply voltage 3 6 V VIO power supply Supply voltage range 1 71 3 63 V Typical supply voltage 1 8 3 3 V Module buck VIN_LDO_OUT VIN_LDO typic...

Страница 15: ...13 1 5 dBm 802 11ac VHT20 MCS8 14 1 5 dBm 802 11ac VHT40 MCS9 13 1 5 dBm 802 11ac VHT80 MCS9 12 1 5 dBm Wi Fi Protocol Feature IEEE 802 11a b g n ac Wi Fi Modulation DSSS CCK BPSK QBPSK DBPSK 16QAM 64QAM 256QAM Wi Fi Operation Mode AP STA Bluetooth Protocol Feature GATT Bluetooth Operation Mode BR EDR BLE Bluetooth Modulation GFSK π 4 DQPSK 8 DPSK WLAN Application Interface SDIO 3 0 Bluetooth Appl...

Страница 16: ...ystal 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 NOTE ...

Страница 17: ...tion 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 Bluetooth application interface RF antenna interfaces Other interfaces WLAN_SLP_CLK XTAL_IN OUT SDIO_VSEL GPIOs ...

Страница 18: ... GND RESERVED WLAN_EN WLAN_WAKE SDIO_DATA2 11 10 9 7 6 8 5 4 3 2 1 23 24 25 27 28 26 29 30 31 32 33 SDIO_DATA0 SDIO_CLK SDIO_CMD VIO GND GND RESERVED BT_EN RESERVED GND GPIO4 GPIO2 GPIO3 BT_CTS GPIO1 BT_TXD BT_RTS BT_RXD GND GND ANT_WIFI0 BT RESERVED RESERVED HOST_WAKE_BT BT_WAKE_HOST RESERVED VBAT XTAL_OUT XTAL_IN FC905A GND Power WLAN Bluetooth RF XTAL Others RESERVED GPIO Figure 1 Pin Assignmen...

Страница 19: ...Input Output PI Power Input PO Power Output Power Supply Pin Name Pin No I O Description Comment VBAT 9 PI Power supply for the module VIO 22 PI Power supply for module s I O pins VIN_LDO_OUT 21 PO Internal buck output for the module VIN_LDO 23 PI Internal buck input for the module GND 1 3 20 31 33 36 WLAN Application Interface Pin Name Pin No I O Description Comment WLAN_EN 12 DI WLAN function en...

Страница 20: ...ain Active high If unused pull it down HOST_WAKE_BT 6 DI Host wakes up Bluetooth VIO power domain If unused keep them open BT_WAKE_HOST 7 DO Bluetooth wakes up host PCM_DOUT 25 DO PCM data output PCM_CLK 26 DI PCM clock PCM_DIN 27 DI PCM data input PCM_SYNC 28 DI PCM data frame sync BT_RTS 41 DO Bluetooth UART request to send BT_TXD 42 DO Bluetooth UART transmit BT_RXD 43 DI Bluetooth UART receive...

Страница 21: ...d by configuring GPIO1 GPIO2 If you need please contact the QUECTEL team WLAN_SLP_CLK 24 DI External 32 768 kHz low power clock input XTAL_IN 10 DI Crystal input Optional XTAL_OUT 11 DO Crystal output SDIO_VSEL 29 DI SDIO mode selection 1 8 V pull up by default 3 3 V pull down and connect to GND through 10 kΩ resistor GPIO1 2 40 DIO General purpose input output VIO power domain If unused keep them...

Страница 22: ...e voltage bearing capacity of the module In principle the longer the VBAT line the wider the line The time sequence of FC905A power on and off is shown in the below VBAT VIO 90 VH 2 Sleep Cycles WLAN_EN BT_EN Sleep Clock Figure 2 Power up Timing 3 4 2 Buck Circuit Pins Introduction The following table describes the pin definition of the internal buck circuit of the module Table 6 Definition of Buc...

Страница 23: ...han 0 4 mm At the same time it is recommended to route the wires away from sensitive signals Table 7 Recommended Inductance Parameters 3 5 WLAN Application Interface The following figure shows the WLAN application interface connection between FC905A and the host HOST FC905A SDIO WLAN_EN WLAN_EN WALN_WAKE WLAN_WAKE SDIO Figure 3 WLAN Application Interface Connection 3 5 1 SDIO Interface FC905A is u...

Страница 24: ...D1 SDIO_D2 SDIO_D3 SDIO_CLK SDIO_CMD 10K VIO NM_10K NM_10K NM_10K NM_10K NM NM NM NM NM NM NM_10K Figure 4 SDIO Interface Connection To ensure that the interface design complies with the SDIO 3 0 specification the following principles are recommended to be adopted Pin Name Pin No 1 bit Mode 4 bit Mode SDIO_DATA2 14 NC SDIO data bit 2 SDIO_DATA3 15 NC SDIO data bit 3 SDIO_CMD 16 SDIO command SDIO c...

Страница 25: ...dule is 7 99 mm 3 5 2 WLAN_EN WLAN_EN is used to control the Wi Fi function of the module Wi Fi function will be enabled when WLAN_EN is at high level Table 9 Pin Definition of WLAN_EN WLAN_EN is the Wi Fi function enable signal When wiring keep it away from sensitive signals such as radio frequency analog signal clock and DC DC noise signals 3 5 3 WLAN_WAKE WLAN_WAKE is used to wake up the host T...

Страница 26: ... 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 Table 11 Pin Definition of UART Interface The following figure shows a reference design for UART interface connection between FC905A and host Pin Name Pin No I O Description Comment BT_RTS 41 DO Bluetooth UART request to send VIO power domain If unused keep them open BT_T...

Страница 27: ...This depends on the input and output directions so in principle when connected the input corresponds to the output 3 6 2 BT_EN BT_EN is used to control the Bluetooth function of FC905A Bluetooth function will be enabled when BT_EN is at high level Table 12 Pin Definition of BT_EN 3 6 3 BT_WAKE_HOST and HOST_WAKE_BT BT_WAKE_HOST and HOST_WAKE_BT are used to wake up Bluetooth function Pin Name Pin N...

Страница 28: ...connection between FC905A and the host PCM_CLK PCM_DIN PCM_SYNC PCM_DOUT FC905A PCM_DIN PCM_SYNC PCM_DOUT PCM_CLK HOST Figure 7 PCM Interface Connection Pin Name Pin No I O Description Comment HOST_WAKE_BT 6 DI Host wakes up Bluetooth function VIO power domain If unused keep them open BT_WAKE_HOST 7 DO Bluetooth function wakes up host Pin Name Pin No I O Description Comment PCM_DOUT 25 DO PCM data...

Страница 29: ...hen the module is in sleep mode Table 15 Pin Definition of WLAN_SLP_CLK Interface The following are the recommended selection parameters for the recommended 32 768 kHz crystal Table 16 WLAN_SLP_CLK Parameter Recommendation Pin Name Pin No I O Description WLAN_SLP_CLK 24 DI External 32 768 kHz low power clock input Parameter Value Unit Frequency 32 768 kHz Frequency accuracy 200 ppm Duty cycle 30 7...

Страница 30: ...wing table Table 17 XO Parameter Definition 3 7 3 SDIO_VSEL SDIO_VSEL is SDIO mode selection pin the following table shows the pin definition of SDIO_VSEL Table 18 Pin Definition of SDIO_VSEL 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 Parameter Min Typ Max Unit Frequency 37 4 MHz ...

Страница 31: ... Definition of RF Antenna Interface Pin definitions of the antenna interface are shown in the following table Table 21 Pin Definition of RF Antenna Interfaces Pin Name Pin No I O Description Comment GPIO1 40 DIO General purpose input output VIO power domain If unused keep them open GPIO2 39 DIO GPIO3 38 DIO GPIO4 37 DIO Feature Frequency Unit 2 4 GHz Wi Fi 2 412 2 462 GHz 5 GHz Wi Fi 5 180 5 825 G...

Страница 32: ...e module place the module near the PCB of the mainboard Ensure that the distance between the PCB of the mainboard and other metal components connectors PCB via holes cabling and copper coating is at least 16 mm Ensure that all layers of the PCB area of the mainboard under the PCB antenna are cleared 3 8 4 Reference Design of RF Routing For user s PCB the characteristic impedance of all RF traces s...

Страница 33: ...round The distance between the RF pins and the RF connector should be as short as possible and all the right angle traces should be changed to curved ones The recommended trace angle is 135 There should be clearance area under the signal pin of the antenna connector or solder joint The reference ground of RF traces should be complete Meanwhile adding some ground vias around RF traces and the refer...

Страница 34: ...lows Table 23 Antenna Requirements 3 8 6 RF Connector Recommendation If RF connector is used for antenna connection it is recommended to use the U FL R SMT connector provided by HIROSE Type Requirements 2 412 2 472 GHz Cable insertion loss 1 dB 5 150 5 875 GHz Type Requirements Frequency Range 2 412 2 472 GHz 5 150 5 875 GHz VSWR 2 Gain dBi Typ 1 Max Input Power W 50 Input Impedance Ω 50 Polarizat...

Страница 35: ...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 ...

Страница 36: ...Wi Fi Bluetooth Module Series FC905A_Hardware_Design 35 51 Figure 14 Space Factor of Mated Connector Unit mm For more information please visit http www hirose com ...

Страница 37: ...ded operating conditions I O interface characteristics Power consumption RF performance Electrostatic discharge 4 2 Absolute Maximum Ratings Recommended Operating Conditions The following table shows the absolute maximum ratings Table 24 Absolute Maximum Ratings The following table shows the recommended operating conditions of the module Table 25 Recommended Operating Conditions Parameter Min Max ...

Страница 38: ...onsumption are shown as below Table 27 Power Consumption of the Module VIO 1 71 1 8 3 3 3 63 V Symbol Parameter Min Max Unit VIH High level Input Voltage 0 7 VIO VIO 0 2 V VIL Low level Input Voltage 0 3 0 3 VIO V VOH High level Output Voltage 0 9 VIO VIO V VOL Low level Output Voltage 0 0 1 VIO V IiL Input leakage current 5 5 µA Parameters Conditions Typ Units 802 11b TX 2 4 GHz 1 Mbps 364 mA TX ...

Страница 39: ...02 11a TX 5 GHz 6 Mbps 316 mA TX 5 GHz 54 Mbps 222 mA 802 11n TX 5 GHz HT20 MCS0 309 mA TX 5 GHz HT20 MCS7 217 mA TX 5 GHz HT40 MCS0 303 mA TX 5 GHz HT40 MCS7 199 mA 802 11ac TX 5 GHz VHT20 MCS0 307 mA TX 5 GHz VHT20 MCS8 208 mA TX 5 GHz VHT40 MCS0 304 mA TX 5 GHz VHT40 MCS9 194 mA TX 5 GHz VHT80 MCS0 299 mA TX 5 GHz VHT80 MCS9 201 mA Description Typ Unit Accuracy 802 11b 1 Mbps 18 dBm 1 5 dB 802 ...

Страница 40: ... 6 Mbps 17 dBm 1 5 dB 802 11a 54 Mbps 15 dBm 1 5 dB 802 11n HT20 MCS0 17 dBm 1 5 dB 802 11n HT20 MCS7 15 dBm 1 5 dB 802 11n HT40 MCS0 16 dBm 1 5 dB 802 11n HT40 MCS7 13 dBm 1 5 dB 802 11ac VHT20 MCS0 17 dBm 1 5 dB 802 11ac VHT20 MCS8 14 dBm 1 5 dB 802 11ac VHT40 MCS0 16 dBm 1 5 dB 802 11ac VHT40 MCS9 13 dBm 1 5 dB 802 11ac VHT80 MCS0 15 dBm 1 5 dB 802 11ac VHT80 MCS9 12 dBm 1 5 dB Description Typ ...

Страница 41: ...MCS0 91 dBm 1 5 dB 802 11n HT20 MCS7 74 dBm 1 5 dB Description Typ Unit Accuracy 802 11a 6 Mbps 92 dBm 1 5 dB 802 11a 54 Mbps 75 dBm 1 5 dB 802 11n HT20 MCS0 92 dBm 1 5 dB 802 11n HT20 MCS7 72 dBm 1 5 dB 802 11n HT40 MCS0 88 dBm 1 5 dB 802 11n HT40 MCS7 68 dBm 1 5 dB 802 11ac VHT20 MCS0 92 dBm 1 5 dB 802 11ac VHT20 MCS8 69 dBm 1 5 dB 802 11ac VHT40 MCS0 88 dBm 1 5 dB 802 11ac VHT40 MCS9 64 dBm 1 5...

Страница 42: ...ain extent Thus please take proper ESD countermeasures and handling methods For example wearing anti static gloves during the development production assembly and testing of the module adding ESD protective components to the ESD sensitive interfaces and points in the product design Table 33 Electrostatic Discharge Characteristics 25 º C 45 Relative Humidity Description Min Typ Unit GFSK 7 9 dBm π 4...

Страница 43: ...Wi Fi Bluetooth Module Series FC905A_Hardware_Design 42 51 Tested Interfaces Contact Discharge Air Discharge Unit VBAT GND 8 12 kV ANT_WIFI0 BT 5 10 kV ...

Страница 44: ...al 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 Figure 15 Top and Side Dimensions Top and Side View Pin 1 ...

Страница 45: ...Design 44 51 5 7 Top and Bottom Views Figure 16 Top Bottom View of FC905A 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 NOTE ...

Страница 46: ...an 10 e g a drying cabinet 4 The module should be pre baked to avoid blistering cracks and inner layer separation in PCB under the following circumstances The module is not stored in Recommended Storage Condition Violation of the third requirement above occurs Vacuum sealed packaging is broken or the packaging has been removed for over 24 hours Before module repairing 5 If needed the pre baking sh...

Страница 47: ... the stencil openings and then penetrate to the PCB The force on the squeegee should be adjusted properly 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 15 0 18mm For more details see document 3 The peak reflow temperature should be 235 246 º C with 246 º C as the absolute maximum reflow temp...

Страница 48: ...ough white rust may be found 3 If a conformal coating is necessary for the module do NOT use any coating material that may chemically react with the PCB or shielding cover and prevent the coating material from flowing into the module 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 Quect...

Страница 49: ... carrier tape packaging and details are as follow 6 8 1Carrier Tape Dimension details are as follow Figure 18 Carrier Tape Dimension Drawing Table 35 Carrier Tape Dimension Table Unit mm 6 8 2Plastic Reel Figure 19 Plastic Reel Dimension Drawing W P T A0 B0 K0 K1 F E 24 16 0 35 12 4 12 4 2 6 3 6 11 5 1 75 ...

Страница 50: ...eat sealed carrier tape to the plastic reel and use the protective tape for protection 1 plastic reel can load 500 modules Place the packaged plastic reel humidity indicator card and desiccant bag into a vacuum bag vacuumize it Place the vacuum packed plastic reel into the pizza box Put 4 packaged pizza boxes into 1 carton and seal it 1 carton can pack 2000 modules Figure 20 Packaging Process øD1 ...

Страница 51: ...e 3 Quectel_Module_Secondary_SMT_Application_Note Abbreviation Description AP Access Point BLE Bluetooth Low Energy BPSK Binary Phase Shift Keying BT Bluetooth CCK Complementary Code Keying CTS Clear To Send DQPSK Differential Quadrature Reference Phase Shift Keying GATT Generic Attribute Profile GND Ground HT High Throughput IEEE Institute of Electrical and Electronics Engineers I O Input Output ...

Страница 52: ... to Send RXD Receive Data TBD To Be Determined TXD Transmit Data UART Universal Asynchronous Receiver Transmitter USB Universal Serial Bus VIHmax Maximum High level Input Voltage VIHmin Minimum High level Input Voltage VILmax Maximum Low level Input Voltage VILmin Minimum Low level Input Voltage VOLmax Maximum Low level Output Voltage VOHmin Minimum High level Output Voltage Vnom Normal Voltage VS...

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