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Summary of Contents for Quectel NB-IoT Module Series
- Page 1 BC66 Hardware Design NB-IoT Module Series Rev. BC66_Hardware_Design_V1.0 Date: 2017-12-01 Status: Preliminary 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
NB-IoT Module Series BC66 Hardware Design About the Document History Revision Date Author Description Speed SUN/ 2017-12-01 Initial Newgate HUA BC66_Hardware_Design 2 / 50... -
Page 4: Table Of Contents
NB-IoT Module Series BC66 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 BC66 Hardware Design 4.1.4. RF Output Power ......................36 4.1.5. RF Receiving Sensitivity ....................37 4.1.6. Operating Frequencies....................38 Electrical, Reliability and Radio Characteristics ................40 Mechanical Dimensions ........................41 6.1. Mechanical Dimensions of the Module..................41 6.2.
- Page 6 NB-IoT Module Series BC66 Hardware Design Table Index TABLE 1: FREQUENCY BANDS OF BC66 MODULE ..................9 TABLE 2: BC66 KEY FEATURES ........................10 TABLE 3: I/O PARAMETERS DEFINITION ....................... 15 TABLE 4: PIN DESCRIPTION ........................... 15 TABLE 5: OVERVIEW OF OPERATING MODES ..................... 18 TABLE 6: POWER SUPPLY PINS ........................
- Page 7 NB-IoT Module Series BC66 Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ....................... 12 FIGURE 2: PIN ASSIGNMENT ......................... 14 FIGURE 3: MODULE POWER CONSUMPTION IN DIFFERENT MODES ............19 FIGURE 4: REFERENCE CIRCUIT FOR POWER SUPPLY ................21 FIGURE 5: TURN ON THE MODULE USING DRIVING CIRCUIT ..............21 FIGURE 6: TURN ON THE MODULE USING KEYSTROKE ................
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Page 8: Introduction
NB-IoT Module Series BC66 Hardware Design Introduction This document defines the BC66 module and describes its air interface and hardware interface which are connected with the customers’ applications. This document can help customers quickly understand module interface specifications, electrical and mechanical details, as well as other related information of the module. -
Page 9: Safety Information
BC66 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. If not so, Quectel assumes no liability for customers’ failure to comply with these precautions. -
Page 10: Product Concept
NB-IoT Module Series BC66 Hardware Design Product Concept 2.1. General Description BC66 is a high-performance NB-IoT module with extremely low power consumption. It is designed to communicate with mobile network operators’ infrastructure equipment through NB-IoT radio protocols (3GPP Rel.13, 3GPP Rel.14). And it supports a broad range of frequency bands as listed below. -
Page 11: Key Features
Data Transmission Single-tone: 25.5kbps (DL)/16.7kbps (UL) Features Multi-tone*: 25.5kbps (DL )/62.5kbps (UL) 3GPP TS 27.005/3GPP TS 27.007 AT commands and Quectel enhanced AT Commands* AT commands Firmware Update Upgrade firmware via main UART port or DFOTA * ... -
Page 12: Functional Diagram
NB-IoT Module Series BC66 Hardware Design Antenna Interface 50Ω impedance control RoHS All hardware components are fully compliant with EU RoHS directive 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. -
Page 13: Development Board
“*” means under development. 2.4. Development Board Quectel provides a complete set of development tools to facilitate the use and testing of BC66 module. The development tool kit includes the TE-B board, USB cable, antenna and other peripherals. For more details, please refer to document [1]. -
Page 14: Application Interfaces
NB-IoT Module Series BC66 Hardware Design Application Interfaces 3.1. General Description BC66 is equipped with a total of 58 pins, including 44 LCC pins and 14 LGA pins. The subsequent chapters will provide detailed descriptions of the following functions/pins/interfaces: ... -
Page 15: Pin Assignment
NB-IoT Module Series BC66 Hardware Design 3.2. Pin Assignment RF_ANT RESERVED SPI_MISO RESERVED SPI_MOSI RESERVED SPI_SCLK RESERVED BC66 SPI_CS RESERVED Top View PWRKEY TXD_AUX RXD_AUX RESERVED ADC0* SIM_GND RESERVED SIM_DATA RESERVED SIM_RST VDD_EXT SIM_CLK RESERVED POWER UART USIM OTHERS RESERVED... -
Page 16: Pin Description
NB-IoT Module Series BC66 Hardware Design 3.3. Pin Description Table 3: I/O Parameters Definition Type Description Bidirectional Digital input Digital output Power input Power output Analog input Analog output Table 4: Pin Description Power Supply Pin Name Pin No. Description... - Page 17 NB-IoT Module Series BC66 Hardware Design Power Key Interface Pin Name Pin No. Description DC Characteristics Comment Pull down max=0.3*VBAT PWRKEY PWRKEY to turn min=0.7*VBAT on the module Reset Interface Pin Name Pin No. Description DC Characteristics Comment RESET Reset the module Active low.
- Page 18 NB-IoT Module Series BC66 Hardware Design Pin Name Pin No. Description DC Characteristics Comment RXD_AUX Receive data 1.8V power domain. TXD_AUX DO Transmit data Debug UART Port Pin Name Pin No. Description DC Characteristics Comment RXD_DBG Receive data 1.8V power domain.
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Page 19: Operating Modes
NB-IoT Module Series BC66 Hardware Design Master input and SPI_MISO slave output of SPI interface Master output SPI_MOSI and slave input of 1.8V power domain. SPI interface Clock signal of SPI_SCLK SPI interface Chip selection of SPI_CS SPI interface Reserved Pins Pin Name Pin No. -
Page 20: Power Saving Mode (Psm)
NB-IoT Module Series BC66 Hardware Design In PSM, only the 32kHz RTC is working. The network is disconnected, paging messages cannot be received either. The module will exit from PSM when the timer T3412 times out, and it can also be woken up from PSM by PWRKEY or PSM_EINT*. For more details, please refer to Chapter 3.5. -
Page 21: Power Supply
NB-IoT Module Series BC66 Hardware Design When the timer T3412 times out, the module will exit from PSM automatically. The module can also be woken up from PSM by PWRKEY or PSM_EINT*. NOTE “*” means under development. 3.6. Power Supply 3.6.1. -
Page 22: Turn On And Off Scenarios
NB-IoT Module Series BC66 Hardware Design Module VBAT VBAT_RF VBAT_BB 100uF 100nF 100pF 22pF 0402 0402 Figure 4: Reference Circuit for Power Supply 3.7. Turn on and off Scenarios 3.7.1. Turn on BC66 can be turned on by driving the PWRKEY pin to a low level for a certain time. -
Page 23: Turn Off
NB-IoT Module Series BC66 Hardware Design Another way to control the PWRKEY is using a button directly. When pressing the key, electrostatic strike may generate from the finger. Therefore, a TVS component is indispensable to be placed nearby the button for ESD protection. A reference circuit is shown in the following figure. -
Page 24: Reset The Module
NB-IoT Module Series BC66 Hardware Design VBAT VDD_EXT Module RUNNING Status Figure 8: Turn-off Timing 3.7.3. Reset the Module Driving the reset pin to a low level voltage for a certain period of time will reset the module. Table 8: Reset Pin Pin Name Pin No. -
Page 25: Uart Interfaces
NB-IoT Module Series BC66 Hardware Design RESET Close to S1 Figure 10: Reference Circuit of RESET by Using Button The reset scenario is illustrated in the following figure. VBAT RESET VDD_EXT · · · · · · · · · · · ·... -
Page 26: Main Uart Port
NB-IoT Module Series BC66 Hardware Design Debug UART Port: TXD_DBG: Send data to RXD of DTE. RXD_DBG: Receive data from TXD of DTE. Auxiliary UART Port: TXD_AUX: Send data to the RXD of DTE. RXD_AUX: Receive data from the TXD of DTE. -
Page 27: Debug Uart Port
NB-IoT Module Series BC66 Hardware Design Module (DCE) Main port Serial port Figure 12: Reference Design for Main UART Port 3.8.2. Debug UART Port Through log viewer tools, customers can check the log information via debug UART port for firmware debugging. -
Page 28: Uart Application
NB-IoT Module Series BC66 Hardware Design Module TXD_AUX RXD_AUX Figure 14: Reference Design for Auxiliary UART Port 3.8.4. UART Application The module provides 1.8V UART interfaces. A level translator should be used if the application is equipped with a 3.3V UART interface. A level translator TXS0108EPWR provided by Texas Instruments is recommended. - Page 29 NB-IoT Module Series BC66 Hardware Design 4.7K VDD_EXT VDD_EXT Module VDD_EXT VCC_DTE 4.7K RXD_DBG TXD_DBG TXD_DBG RXD_DBG RXD_AUX TXD_AUX TXD_AUX RXD_AUX GPIO Figure 16: Reference Circuit with Transistor Circuit The following circuit shows a reference design for the communication between the module and PC.
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Page 30: Spi Interface
NB-IoT Module Series BC66 Hardware Design Please visit vendors’ websites to select a suitable RS-232 transceiver, such as: http://www.exar.com and http://www.maximintegrated.com. NOTES Transistor circuit solution is not suitable for applications with high baud rates exceeding 460Kbps. “ ” represents the test point of UART interfaces. It is also recommended to reserve the test points of VBAT and PWRKEY, for convenient firmware upgrade and debugging when necessary. -
Page 31: Usim Interface
NB-IoT Module Series BC66 Hardware Design 3.10. USIM Interface The module provides a USIM interface compliant to ISO/IEC 7816-3, enabling the module to access to external USIM cards. The external USIM card is powered by an internal regulator in the module and supports 1.8V power supply. -
Page 32: Adc Interface
NB-IoT Module Series BC66 Hardware Design Keep placement of USIM card connector as close as possible to the module. Keep the trace length as less than 200mm as possible. Keep USIM card signals away from RF and VBAT traces. -
Page 33: Network Status Indication
NB-IoT Module Series BC66 Hardware Design NOTE “*” means under development. 3.13. Network Status Indication* The NETLIGHT signal can be used to drive a network status indicator LED. A reference circuit is shown as below. VBAT Module 2.2K 4.7K NETLIGHT... -
Page 34: Antenna Interface
NB-IoT Module Series BC66 Hardware Design Antenna Interface The pin 35 is the RF antenna pad. The antenna port has an impedance of 50Ω. 4.1. Antenna Interface Table 13: Pin Definition of NB-IoT Antenna Interface Pin Name Pin No. Description... -
Page 35: Antenna Requirements
NB-IoT Module Series BC66 Hardware Design 4.1.2. Antenna Requirements To minimize the loss on RF trace and RF cable, please pay attention to the antenna design. The following tables show the requirements on NB-IoT antenna. Table 14: Antenna Cable Insertion Loss Requirements... - Page 36 NB-IoT Module Series BC66 Hardware Design Figure 22: Microstrip Line Design on a 2-layer PCB Figure 23: Coplanar Waveguide Line Design on a 2-layer PCB Figure 24: Coplanar Waveguide Line Design on a 4-layer PCB (Layer 3 as Reference Ground)
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Page 37: Rf Output Power
NB-IoT Module Series BC66 Hardware Design Figure 25: 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 38: Rf Receiving Sensitivity
NB-IoT Module Series BC66 Hardware Design B12* 23dBm± 2dB <-39dBm B13* 23dBm± 2dB <-39dBm B17* 23dBm± 2dB <-39dBm B18* 23dBm± 2dB <-39dBm B19* 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm B25* 23dBm± 2dB <-39dBm B26* 23dBm± 2dB <-39dBm B28* 23dBm± 2dB <-39dBm... -
Page 39: Operating Frequencies
NB-IoT Module Series BC66 Hardware Design B18* B19* B25* B26* B28* B66* NOTE “*” means under development. 4.1.6. Operating Frequencies Table 18: Module Operating Frequencies Frequency Band Receive Transmit 2110MHz~2170MHz 1920MHz~1980MHz 1930MHz~1990MHz 1850MHz~1910MHz 1805MHz~1880MHz 1710MHz~1785MHz 869MHz~894MHz 824MHz~849MHz 925MHz~960MHz 880MHz~915 MHz... - Page 40 NB-IoT Module Series BC66 Hardware Design B26* 859MHz~894MHz 814MHz~849MHz B28* 758MHz~803MHz 703MHz~748MHz B66* 2110MHz~2200MHz 1710MHz~1780MHz NOTE “*” means under development. BC66_Hardware_Design 39 / 50...
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Page 41: Electrical, Reliability And Radio Characteristics
NB-IoT Module Series BC66 Hardware Design Electrical, Reliability and Radio Characteristics The information will be added in the future version of this document. BC66_Hardware_Design 40 / 50... -
Page 42: Mechanical Dimensions
NB-IoT Module Series BC66 Hardware Design Mechanical Dimensions This chapter describes the mechanical dimensions of the module. All dimensions are measured in millimetre (mm), and the tolerances for dimensions without tolerance values are ± 0.05mm. 6.1. Mechanical Dimensions of the Module... - Page 43 NB-IoT Module Series BC66 Hardware Design Figure 27: Module Bottom Dimension (Bottom View) BC66_Hardware_Design 42 / 50...
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Page 44: Recommended Footprint
NB-IoT Module Series BC66 Hardware Design 6.2. Recommended Footprint Figure 28: Recommended Footprint (Unit: mm) NOTE The module should be kept about 3mm away from other components on the host PCB. BC66_Hardware_Design 43 / 50... -
Page 45: Top And Bottom Views Of The Module
Figure 29: Top View of the Module Figure 30: Bottom View of the Module NOTE These are design effect drawings of BC66 modules. For more accurate pictures, please refer to the module that customers get from Quectel. BC66_Hardware_Design 44 / 50... -
Page 46: Storage, Manufacturing And Packaging
NB-IoT Module Series BC66 Hardware Design Storage, Manufacturing and Packaging 7.1. Storage BC66 module is stored in a vacuum-sealed bag. The storage restrictions are shown as below. Shelf life in the vacuum-sealed bag: 12 months at <40º C and <90%RH. -
Page 47: Manufacturing And Soldering
NB-IoT Module Series BC66 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: Tape And Reel Packaging
NB-IoT Module Series BC66 Hardware Design 7.3.1. Tape and Reel Packaging The reel is 330mm in diameter and each reel contains 250 modules. Figure 32: Tape Dimensions (Unit: mm) Figure 33: Reel Dimensions (Unit: mm) BC66_Hardware_Design 47 / 50... -
Page 49: Appendix A References
NB-IoT Module Series BC66 Hardware Design Appendix A References Table 19: Related Documents Document Name Remark Quectel_BC66-TE-B_User_Guide BC66-TE-B User Guide Quectel_RF_Layout_Application_Note RF Layout Application Note Quectel_BC66_AT_Commands_Manual BC66 AT Commands Manual Quectel_Module_Secondary_SMT_User_Guide Module Secondary SMT User Guide Table 20: Terms and Abbreviations... - Page 50 NB-IoT Module Series BC66 Hardware Design kbps Kilo Bits Per Second Light Emitting Diode Li-MnO2 Lithium-manganese Dioxide Li-2S Lithium Sulfur Long Term Evolution LWM2M Lightweight M2M MQTT Message Queuing Telemetry Transport NB-IoT arrow Band- Internet of Things Printed Circuit Board...
- Page 51 NB-IoT Module Series BC66 Hardware Design Vmax Maximum Voltage Value Vnorm Normal Voltage Value Vmin Minimum Voltage Value Maximum Input High Level Voltage Value Minimum Input High Level Voltage Value Maximum Input Low Level Voltage Value Minimum Input Low Level Voltage Value...
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