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Quectel BC95 Hardware Design

Summary of BC95

  • Page 1

    Bc95 hardware design nb-iot module series rev. Bc95_hardware_design_v1.3 date: 2017-06-15 www.Quectel.Com.

  • Page 2

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 1 / 51 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, tianz...

  • Page 3: About The Document

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 2 / 51 about the document history revision date author description 1.0 2016-11-30 bryant chen/ mark zhang initial 1.1 2017-01-24 bryant chen/ mark zhang 1. Modified module’s current consumption in psm. 2. Changed ...

  • Page 4: Contents

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 3 / 51 contents about the document ................................................................................................................................... 2 contents ......................................

  • Page 5

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 4 / 51 4.6. Antenna requirement ........................................................................................................... 35 4.7. Install the antenna with rf connector ..............................

  • Page 6: Table Index

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 5 / 51 table index table 1: frequency bands of bc95 series module .......................................................................... 9 table 2: bc95 key features ..............................................

  • Page 7: Figure Index

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 6 / 51 figure index figure 1: functional diagram ................................................................................................................ 11 figure 2: pin assignment ..........................

  • Page 8: Introduction

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 7 / 51 1 introduction this document defines the bc95 module and describes its air interface and hardware interface which are connected with customers’ applications. This document can help customers to quickly unde...

  • Page 9: 1.1. Safety Information

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 8 / 51 1.1. Safety information the following safety precautions must be observed during all phases of the operation, such as usage, service or repair of any cellular terminal or mobile incorporating bc95 module. M...

  • Page 10: Product Concept

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 9 / 51 2 product concept 2.1. General description bc95 is a series of nb-iot module which contains four variants: bc95-b8, bc95-b5, bc95-b20 and bc95-b28*. It is designed to communicate with mobile network operato...

  • Page 11: 2.2. Key Features

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 10 / 51 2.2. Key features the following table describes the detailed features of bc95 module. Table 2: bc95 key features feature details power supply  supply voltage: 3.1v ~ 4.2v  typical supply voltage: 3.6v po...

  • Page 12: 2.3. Functional Diagram

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 11 / 51 1. 1) within operation temperature range, the module is 3gpp compliant. 2. 2) within extended temperature range, the module remains the ability to establish and maintain an sms*, data transmission, etc. Th...

  • Page 13: 2.4. Evaluation Board

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 12 / 51 2.4. Evaluation board in order to help customers to develop applications with bc95, quectel supplies the evaluation board (evb), rs-232 to usb cable, power adapter, antenna and other peripherals to control...

  • Page 14: Application Functions

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 13 / 51 3 application functions 3.1. General description bc95 is equipped with 54-pin 1.1mm pitch smt pads plus 40-pin ground/reserved pads. The following chapters provide detailed descriptions of these pins:  po...

  • Page 15: 3.2. Pin Assignment

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 14 / 51 3.2. Pin assignment 4 4 4 5 4 6 4 7 4 8 5 1 5 2 5 3 5 4 5 0 4 9 43 42 41 40 39 38 35 36 37 34 33 32 31 30 29 28 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 1 9 1 8 1 7 9 8 7 reserved reserved reserved reserved reserve...

  • Page 16: 3.3. Pin Description

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 15 / 51 3.3. Pin description the following tables show the pin definition and description of bc95. Table 3: i/o parameters definition type description io bidirectional di digital input do digital output pi power i...

  • Page 17

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 16 / 51 54, 59~66, 71~74, 81~83, 92~94 reset interface pin name pin no. I/o description dc characteristics comment reset 15 di reset the module r pu ≈78kΩ v ih max=3.3v v ih min=2.1v v il max=0.6v pull up internal...

  • Page 18

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 17 / 51 dbg_ txd 20 do transmit data v ol max=0.4v v oh min=2.4v if unused, keep these pins open. Usim interface pin name pin no. I/o description dc characteristics comment usim_ vdd 38 do power supply for usim ca...

  • Page 19: 3.4. Operating Modes

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 18 / 51 “*” means under development. 3.4. Operating modes bc95 module has three operating modes, which can determine availability of functions for different levels of power-saving. Table 5: overview of operating m...

  • Page 20

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 19 / 51 gnd 2, 43, 47, 48, 51, 52, 54, 59~66, 71~74, 81~83, 92~94 ground - 0 - v 3.5.2. Reference design for power supply the power design for the module is very important, as the performance of the module largely...

  • Page 21

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 20 / 51 vbat reset delay>535us figure 4: turn-on timing 3.6.2. Power down the module can be turned off by shutting down the vbat power supply. Vbat reset delay>5ms figure 5: turn-off timing 3.6.3. Reset the module...

  • Page 22: 3.7. Power Saving

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 21 / 51 table 7: reset characteristics pin name pin no. Description reset time reset 15 reset the module, active low >100ms the recommended circuit of hardware resetting is shown as below. An open drain/collector ...

  • Page 23: 3.8. Uart Interfaces

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 22 / 51 p ow er c on su m pt io n psm idle t ra ns m is si on r ec ep tio n t3324 t3412 tau ue inactive time idle figure 8: diagram for power consumption the procedure for entering psm is as follows: the module re...

  • Page 24

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 23 / 51 the debug port:  dbg_txd: send data to the com port of computer.  dbg_rxd: receive data from the com port of computer. “*” means under development. The logic levels are described in the following table. ...

  • Page 25

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 24 / 51 the following figure shows the connection between the dce and dte. Txd rxd ri txd rxd ring module (dce) serial port main port gnd gnd pc (dte) figure 9: reference design for main port 3.8.2. Debug port deb...

  • Page 26

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 25 / 51 3.8.3. Uart application a reference design of 3.3v level match is shown as below. Peripheral txd rxd 1k txd rxd ri eint module voltage level: 3.3v 1k 1k gnd gnd txd rxd gnd test points reset vbat vbat rese...

  • Page 27: 3.9. Usim Card Interface

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 26 / 51 txd rxd ri module gnd c1+ c1- c2+ c2- v+ vcc gnd v- 3.3v t1in t2in t3in t4in r1in r2in r3in r1out r2out r3out t1out t2out t5out t3out t4out t5in gnd gnd /r1out 1 2 3 4 5 7 8 9 gnd to pc main serial port gn...

  • Page 28

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 27 / 51 a reference circuit for 6-pin usim card connector is illustrated as the following figure. Module usim_vdd usim_gnd usim_rst usim_clk usim_data 22r 22r 22r 100nf usim card connector gnd tvs 33pf33pf 33pf vc...

  • Page 29: 3.10.   Adc Interface*

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 28 / 51 as to suppress emi spurious transmission and enhance esd protection. Please note that the usim peripheral circuit should be close to the usim card connector.  place the rf bypass capacitors (33pf) close t...

  • Page 30

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 29 / 51 high low ri 120ms idle a urc or sms message is received figure 14: behaviors of ri when a urc or sms message is received “*” means under development. 3.12. Network status indication* the netlight signal ca...

  • Page 31

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 30 / 51 a reference circuit is shown as below. Module netlight 4.7k 47k 2.2k vbat figure 15: reference design for netlight “*” means under development. Note quectel confidential.

  • Page 32: Antenna Interface

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 31 / 51 4 antenna interface the pin 53 is the rf antenna pad. The rf antenna interface has an impedance of 50Ω. Table 14: pin definition of the rf antenna interface 4.1. Rf antenna reference design a reference des...

  • Page 33

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 32 / 51 bc95 provides an rf antenna pad for antenna connection. There is one grounding pad on both sides of the antenna pad in order to give a better grounding. Besides, a π- type match circuit is suggested to be ...

  • Page 34

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 33 / 51 figure 19: coplanar waveguide line design on a 4-layer pcb (layer 3 as reference ground) figure 20: coplanar waveguide line design on a 4-layer pcb (layer 4 as reference ground) in order to ensure rf perfo...

  • Page 35: 4.3. Rf Output Power

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 34 / 51 4.3. Rf output power table 15: rf output power (uplink qpsk and bpsk modulation) this design is compliant with the nb-iot radio protocol 3gpp rel-13. 4.4. Rf receiving sensitivity table 16: rf receiving se...

  • Page 36: 4.5. Operating Frequencies

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 35 / 51 4.5. Operating frequencies table 17: operating frequencies 4.6. Antenna requirement the following table shows the requirement on nb-iot antenna. Table 18: antenna cable requirement frequency range requirem...

  • Page 37

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 36 / 51 4.7. 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 21: dimensions of the uf...

  • Page 38

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 37 / 51 the following figure describes the space factor of mated connector. Figure 23: space factor of mated connector (unit: mm) for more details, please visit http://www.Hirose.Com. Quectel confidential.

  • Page 39: Characteristics

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 38 / 51 5 electrical, reliability and radio characteristics 5.1. Absolute maximum ratings absolute maximum ratings for power supply and voltage on digital and analog pins of the module are listed in the following ...

  • Page 40: 5.3. Current Consumption

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 39 / 51 1. 1) within operation temperature range, the module is 3gpp compliant. 2. 2) within extended temperature range, the module remains the ability to establish and maintain an sms*, data transmission, etc. Th...

  • Page 41

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 40 / 51 5.4. Electrostatic discharge the module is not protected against electrostatic discharge (esd) in general. Consequently, it is subject to esd handling precautions that typically apply to esd sensitive comp...

  • Page 42: Mechanical Dimensions

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 41 / 51 6 mechanical dimensions this chapter describes the mechanical dimensions of the module. All dimensions are measured in mm. The tolerances for dimensions without tolerance values are ±0.05mm. 6.1. Mechanica...

  • Page 43

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 42 / 51 figure 25: module bottom dimensions (bottom view) quectel confidential.

  • Page 44: 6.2. Recommended Footprint

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 43 / 51 6.2. Recommended footprint figure 26: recommended footprint (top view) 1. For easy maintenance of the module, please keep about 3mm between the module and other components in the host pcb. 2. All reserved ...

  • Page 45

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 44 / 51 6.3. Design effect drawings of the module figure 27: top view of the module figure 28: bottom view of the module these are design effect drawings of bc95 module. For more accurate pictures, please refer to...

  • Page 46: Storage, Manufacturing And

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 45 / 51 7 storage, manufacturing and packaging 7.1. Storage bc95 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 2. After ...

  • Page 47

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 46 / 51 7.2. 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 squee...

  • Page 48: 7.3. Packaging

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 47 / 51 7.3. Packaging the modules are stored inside a vacuum-sealed bag which is esd protected. It should not be opened until the devices are ready to be soldered onto the application. 7.3.1. Tape and reel packag...

  • Page 49

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 48 / 51 ps 6 detail:a detail:a figure 31: reel dimensions quectel confidential.

  • Page 50: Appendix A References

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 49 / 51 8 appendix a references table 24: related documents table 25: terms and abbreviations sn document name remark [1] quectel_module_secondary_smt_user_guide module secondary smt user guide [2] quectel_bc95_fi...

  • Page 51

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 50 / 51 kbps kilo bits per second led light emitting diode mme mobility management entity mo mobile originated nb-iot narrow band internet of things pcb printed circuit board pdn public data network psm power savi...

  • Page 52

    Nb-iot module series bc95 hardware design bc95_hardware_design confidential / released 51 / 51 vilmax maximum input low level voltage value vilmin minimum input low level voltage value vimax absolute maximum input voltage value vimin absolute minimum input voltage value vohmax maximum output high le...