Related Manuals for Quectel BC95
Summary of Contents for Quectel 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 QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION.
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Page 3: About The Document
Author Description Bryant CHEN/ 2016-11-30 Initial Mark ZHANG 1. Modified module’s current consumption in PSM. 2. Changed the name of BC95 variants from BC95 Bryant CHEN/ -CM/BC95-SL/BC95-VF to BC95-B8/BC95-B5/B 2017-01-24 Mark ZHANG C95-B20. 3. Enabled main port to upgrade firmware. -
Page 4: Table Of Contents
NB-IoT Module Series BC95 Hardware Design Contents About the Document ........................... 2 Contents ............................... 3 Table Index ..............................5 Figure Index ..............................6 Introduction ............................7 1.1. Safety Information ........................8 Product Concept ..........................9 2.1. General Description ......................... 9 2.2. - Page 5 NB-IoT Module Series BC95 Hardware Design 4.6. Antenna Requirement ......................35 4.7. Install the Antenna with RF Connector .................. 36 Electrical, Reliability and Radio Characteristics ................38 5.1. Absolute Maximum Ratings....................38 5.2. Operating Temperature ......................38 5.3. Current Consumption ......................39 5.4.
- Page 6 NB-IoT Module Series BC95 Hardware Design Table Index TABLE 1: FREQUENCY BANDS OF BC95 SERIES MODULE ................9 TABLE 2: BC95 KEY FEATURES ........................10 TABLE 3: I/O PARAMETERS DEFINITION ....................... 15 TABLE 4: PIN DESCRIPTION ........................... 15 TABLE 5: OVERVIEW OF OPERATING MODES ..................... 18 TABLE 6: VBAT AND GND PINS ........................
- Page 7 NB-IoT Module Series BC95 Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ........................ 11 FIGURE 2: PIN ASSIGNMENT ......................... 14 FIGURE 3: REFERENCE CIRCUIT FOR THE VBAT INPUT ................19 FIGURE 4: TURN-ON TIMING .......................... 20 FIGURE 5: TURN-OFF TIMING ........................20 FIGURE 6: REFERENCE CIRCUIT OF RESET BY USING DRIVING CIRCUIT ..........
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Page 8: Introduction
NB-IoT Module Series BC95 Hardware Design 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 understand module interface specifications, electrical and mechanical details. -
Page 9: 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. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel, and incorporate these guidelines into all manuals supplied with the product. -
Page 10: Product Concept
Band 20 Band 28 BC95 is an SMD type module with LCC package, with an ultra-compact profile of 19.9mm × 23.6mm × 2.2mm, which can be easily embedded into applications. It provides hardware interfaces such as ADC and UART interfaces, and can meet almost all the requirements for IoT applications, such as smart metering, bike sharing, smart parking, smart city, security and asset tracking, home appliances, agricultural and environmental monitoring, etc. -
Page 11: Key Features
NB-IoT Module Series BC95 Hardware Design 2.2. Key Features The following table describes the detailed features of BC95 module. Table 2: BC95 Key Features Feature Details Supply voltage: 3.1V ~ 4.2V Power Supply Typical supply voltage: 3.6V ... -
Page 12: Functional Diagram
When the temperature returns to the normal operating temperature levels, the module will meet 3GPP specifications again. “*” means under development. 2.3. Functional Diagram The following figure shows a block diagram of BC95 and illustrates the major functional parts. Radio frequency ... -
Page 13: Evaluation Board
NB-IoT Module Series BC95 Hardware Design 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 or test the module. BC95_Hardware_Design... -
Page 14: Application Functions
NB-IoT Module Series BC95 Hardware Design 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: Power supply UART interfaces ... -
Page 15: Pin Assignment
NB-IoT Module Series BC95 Hardware Design 3.2. Pin Assignment RESERVED USIM_GND RESERVED USIM_CLK RESERVED USIM_DATA RESERVED USIM_RST RESERVED USIM_VDD RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESET RESERVED RESERVED POWER UART OTHERS USIM... -
Page 16: Pin Description
NB-IoT Module Series BC95 Hardware Design 3.3. Pin Description The following tables show the pin definition and description of BC95. Table 3: I/O Parameters Definition Type Description Bidirectional Digital input Digital output Power input Power output Analog input Analog output... - Page 17 NB-IoT Module Series BC95 Hardware Design 59~66, 71~74, 81~83, 92~94 Reset Interface Pin Name Pin No. Description DC Characteristics Comment ≈78kΩ max=3.3V Pull up internally. RESET Reset the module min=2.1V Active low. max=0.6V Network Status Indicator Pin Name Pin No.
- Page 18 NB-IoT Module Series BC95 Hardware Design DBG_ max=0.4V If unused, keep these Transmit data min=2.4V pins open. USIM Interface Pin Name Pin No. Description DC Characteristics Comment USIM_ Power supply for USIM Vnorm=3.0V card USIM_ max=0.4V USIM card reset All signals of USIM min=2.4V...
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Page 19: Operating Modes
NB-IoT Module Series BC95 Hardware Design NOTE “*” 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 Modes Mode Function In active mode, all functions of the module are available and all processors are active. -
Page 20: Reference Design For Power Supply
NB-IoT Module Series BC95 Hardware Design 2, 43, 47, 48, 51, 52, 54, 59~66, 71~74, Ground 81~83, 92~94 3.5.2. Reference Design for Power Supply The power design for the module is very important, as the performance of the module largely depends on the power source. -
Page 21: Power Down
NB-IoT Module Series BC95 Hardware Design Delay>535us VBAT RESET Figure 4: Turn-on Timing 3.6.2. Power down The module can be turned off by shutting down the VBAT power supply. Delay>5ms VBAT RESET Figure 5: Turn-off Timing 3.6.3. Reset the Module The module can be reset by two ways. -
Page 22: Power Saving
NB-IoT Module Series BC95 Hardware Design Table 7: Reset Characteristics Pin Name Pin No. Description Reset Time RESET Reset the module, active low >100ms The recommended circuit of hardware resetting is shown as below. An open drain/collector driver or button can be used to control the RESET pin. -
Page 23: Uart Interfaces
NB-IoT Module Series BC95 Hardware Design Idle Idle T3324 T3412 UE inactive time Figure 8: Diagram for Power Consumption The procedure for entering PSM is as follows: the module requests to enter PSM in “ATTACH REQUEST” message during attach/TAU (Tracking Area Update) procedure. Then the network accepts the request and provides an active time value (T3324) to the module and the mobile reachable timer starts. -
Page 24: Main Port
NB-IoT Module Series BC95 Hardware Design The debug port: DBG_TXD: Send data to the COM port of computer. DBG_RXD: Receive data from the COM port of computer. NOTE “*” means under development. The logic levels are described in the following table. -
Page 25: Debug Port
NB-IoT Module Series BC95 Hardware Design The following figure shows the connection between the DCE and DTE. Module (DCE) PC (DTE) Main port Serial port RING Figure 9: Reference Design for Main Port 3.8.2. Debug Port Debug port is used to view log information with UE Log Viewer tool for debugging, and the baud rate is 921600bps. -
Page 26: Uart Application
NB-IoT Module Series BC95 Hardware Design 3.8.3. UART Application A reference design of 3.3V level match is shown as below. Module Peripheral EINT VBAT Voltage level: 3.3V VBAT RESET RESET Test points Figure 11: Level Match Design for 3.3V System NOTE 1. -
Page 27: Usim Card Interface
NB-IoT Module Series BC95 Hardware Design 3.3V Module T1IN T2OUT T2IN T1OUT T3IN T5OUT To PC Main Serial Port T4IN T3OUT T5IN T4OUT /R1OUT R1OUT R1IN R2OUT R2IN R3OUT R3IN RS-232 Level Shifter Figure 12: Sketch Map for RS-232 Interface Match Please visit vendor web site to select the suitable RS-232 level shifter IC, such as: http://www.exar.com... -
Page 28: Figure 13: Reference Circuit For Usim Interface With 6-Pin Usim Card Connector
NB-IoT Module Series BC95 Hardware Design USIM_CLK USIM card clock USIM_DATA USIM card data I/O USIM_RST USIM card reset USIM_GND USIM card ground A reference circuit for 6-pin USIM card connector is illustrated as the following figure. 100nF USIM_GND USIM Card Connector... -
Page 29: Adc Interface
NB-IoT Module Series BC95 Hardware Design 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 to the USIM card on all signals traces to improve EMI suppression. -
Page 30: Network Status Indication
NB-IoT Module Series BC95 Hardware Design 120ms HIGH Idle A URC or SMS message is received Figure 14: Behaviors of RI When a URC or SMS Message is Received NOTE “*” means under development. 3.12. Network Status Indication* The NETLIGHT signal can be used to drive a network status indication LED. The working state of this pin is listed in the following table. -
Page 31: Figure 15: Reference Design For Netlight
NB-IoT Module Series BC95 Hardware Design A reference circuit is shown as below. VBAT Module 2.2K 4.7K NETLIGHT Figure 15: Reference Design for NETLIGHT NOTE “*” means under development. BC95_Hardware_Design Confidential / Released 30 / 51... -
Page 32: Antenna Interface
NB-IoT Module Series BC95 Hardware Design 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 Pin Name Pin No. Description Ground... -
Page 33: Reference Design Of Rf Layout
BC95 Hardware Design 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 π-type... -
Page 34: Figure 19: Coplanar Waveguide Line Design On A 4-Layer Pcb (Layer 3 As Reference Ground)
NB-IoT Module Series BC95 Hardware Design 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 performance and reliability, the following principles should be complied with in RF layout design: ... -
Page 35: Rf Output Power
NB-IoT Module Series BC95 Hardware Design 4.3. RF Output Power Table 15: RF Output Power (Uplink QPSK and BPSK Modulation) Frequency Band Max. Min. Band 8 23dBm± 2dB <-40dBm Band 5 23dBm± 2dB <-40dBm Band 20 23dBm± 2dB <-40dBm Band 28 23dBm±... -
Page 36: Operating Frequencies
NB-IoT Module Series BC95 Hardware Design 4.5. Operating Frequencies Table 17: Operating Frequencies Frequency Band Receive Transmit Band 8 925~960MHz 880~915MHz Band 5 869~894MHz 824~849MHz Band 20 791~821MHz 832~862MHz Band 28 758~803MHz 703~748MHz 4.6. Antenna Requirement The following table shows the requirement on NB-IoT antenna. -
Page 37: Install The Antenna With Rf Connector
NB-IoT Module Series BC95 Hardware Design 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.L-R-SMT Connector (Unit: mm) U.FL-LP series connector listed in the following figure can be used to match the UF.L-R-SMT. -
Page 38: Figure 23: Space Factor Of Mated Connector (Unit: Mm)
NB-IoT Module Series BC95 Hardware Design 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. BC95_Hardware_Design Confidential / Released 37 / 51... -
Page 39: Electrical, Reliability And Radio Characteristics
NB-IoT Module Series BC95 Hardware Design 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 table. Table 20: Absolute Maximum Ratings Parameter Min. -
Page 40: Current Consumption
NB-IoT Module Series BC95 Hardware Design NOTES Within operation temperature range, the module is 3GPP compliant. Within extended temperature range, the module remains the ability to establish and maintain an SMS*, data transmission, etc. There is no unrecoverable malfunction. There are also no effects on radio spectrum and no harm to radio network. -
Page 41: Electrostatic Discharge
NB-IoT Module Series BC95 Hardware Design 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 components. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any application that incorporates the module. -
Page 42: Mechanical Dimensions
NB-IoT Module Series BC95 Hardware Design 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. Mechanical Dimensions of the Module Figure 24: Module Top and Side Dimensions... -
Page 43: Figure 25: Module Bottom Dimensions (Bottom View)
NB-IoT Module Series BC95 Hardware Design Figure 25: Module Bottom Dimensions (Bottom View) BC95_Hardware_Design Confidential / Released 42 / 51... -
Page 44: Recommended Footprint
NB-IoT Module Series BC95 Hardware Design 6.2. Recommended Footprint Figure 26: Recommended Footprint (Top View) NOTES 1. For easy maintenance of the module, please keep about 3mm between the module and other components in the host PCB. 2. All RESERVED pins must not be connected to GND. -
Page 45: Design Effect Drawings Of The Module
Figure 27: Top View of the Module Figure 28: Bottom View of the Module NOTE These are design effect drawings of BC95 module. For more accurate pictures, please refer to the module that you get from Quectel. BC95_Hardware_Design Confidential / Released... -
Page 46: Storage, Manufacturing And Packaging
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 <40º C/90%RH. 2. After the vacuum-sealed bag is opened, devices that will be subjected to reflow soldering or other high temperature processes must be: ... -
Page 47: Manufacturing And Soldering
NB-IoT Module Series BC95 Hardware Design 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 squeegee should be adjusted properly so as to produce a clean stencil surface on a single pass. -
Page 48: Packaging
NB-IoT Module Series BC95 Hardware Design 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 Packaging The reel is 330mm in diameter and each reel contains 250 modules. -
Page 49: Figure 31: Reel Dimensions
NB-IoT Module Series BC95 Hardware Design DETAIL:A DETAIL:A Figure 31: Reel Dimensions BC95_Hardware_Design Confidential / Released 48 / 51... -
Page 50: Appendix A References
BC95 Hardware Design Appendix A References Table 24: Related Documents Document Name Remark Quectel_Module_Secondary_SMT_User_Guide Module Secondary SMT User Guide Quectel_BC95_Firmware_Upgrade_via_Code_ BC95 Firmware Upgrade via Code Loader Loader_User_Guide User Guide Quectel_BC95_Firmware_Upgrade_via_Universal_ BC95 Firmware Upgrade via Universal Code_Loader_User_Guide Code Loader User Guide Quectel_RF_Layout_Application_Note... - Page 51 NB-IoT Module Series BC95 Hardware Design kbps Kilo Bits Per Second Light Emitting Diode Mobility Management Entity Mobile Originated NB-IoT Narrow Band Internet of Things Printed Circuit Board Public Data Network Power Saving Mode Radio Frequency RoHS Restriction of Hazardous Substances...
- Page 52 NB-IoT Module Series BC95 Hardware Design 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 Level Voltage Value VOHmin...
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