Quectel BC66-NA Manual
  1. Manuals
  2. Brands
  3. Quectel Manuals
  4. Control Unit
  5. BC66-NA
  6. Manual

Quectel BC66-NA Manual

Nb-iot module
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
BC66-NA
Design
NB-IoT Module Series
Rev. BC66-NA_Hardware_Design_V1.0
Date: 2019-11-05
Status: Released
Hardware
www.quectel.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the BC66-NA and is the answer not in the manual?

Questions and answers

Related Manuals for Quectel BC66-NA

Summary of Contents for Quectel BC66-NA

  • Page 1 BC66-NA Hardware Design NB-IoT Module Series Rev. BC66-NA_Hardware_Design_V1.0 Date: 2019-11-05 Status: Released 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.

  • Page 3: About The Document

    NB-IoT Module Series BC66-NA Hardware Design About the Document History Revision Date Author Description Speed SUN/ 2019-11-05 Lewis SHEN/ Initial Allan LIANG BC66-NA_Hardware_Design 2 / 58...

  • Page 4: Table Of Contents

    NB-IoT Module Series BC66-NA 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-NA Hardware Design 4.5. Antenna Requirements ......................39 4.6. RF Output Power ........................40 4.7. RF Receiving Sensitivity ......................41 4.8. Recommended RF Connector for Antenna Installation ............42 Electrical and Reliability Characteristics ..................44 5.1. Operation and Storage Temperatures ..................44 5.2.
  • Page 6 NB-IoT Module Series BC66-NA Hardware Design Table Index TABLE 1: FREQUENCY BANDS OF BC66-NA MODULE .................. 9 TABLE 2: BC66-NA KEY FEATURES ....................... 10 TABLE 3: I/O PARAMETERS DEFINITION ....................... 15 TABLE 4: PIN DESCRIPTION ........................... 15 TABLE 5: AP OPERATING MODES ........................19 TABLE 6: MODEM OPERATING MODES ......................
  • Page 7 NB-IoT Module Series BC66-NA Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ....................... 12 FIGURE 2: PIN ASSIGNMENT ......................... 14 FIGURE 3: MODULE POWER CONSUMPTION IN DIFFERENT MODES (MODEM) ........20 FIGURE 4: TIMING OF WAKING UP MODULE FROM DEEP SLEEP ............20 FIGURE 5: REFERENCE CIRCUIT FOR POWER SUPPLY ................

  • Page 8: Introduction

    NB-IoT Module Series BC66-NA Hardware Design Introduction This document defines the BC66-NA module and describes its air interface and hardware interface which are connected with the customers’ applications. This document helps customers quickly understand the interface specifications, electrical and mechanical details, as well as other related information of the module.

  • Page 9: Safety Information

    BC66-NA module. Manufacturers of the cellular terminal should notify users and operating personnel of the following safety information by incorporating these guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for any user’s failure to observe these precautions.

  • Page 10: Product Concept

    H-FDD B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26*/B28/B66/B71/B85 BC66-NA is an SMD type module with LCC and LGA package, and has an ultra-compact profile of 17.7mm × 15.8mm × 2.0mm. These make it can be easily embedded into size-constrained applications and provide reliable connectivity with the applications.

  • Page 11: Key Features

    NB-IoT Module Series BC66-NA Hardware Design 2.2. Key Features The following table describes the detailed features of BC66-NA module. Table 2: BC66-NA Key Features Feature Details  Supply voltage: 2.1V ~ 3.63V Power Supply  Typical supply voltage: 3.3V ...

  • Page 12: Functional Diagram

    3GPP. When the temperature returns to the normal operation temperature levels, the module will meet 3GPP specifications again. "*" means under development. 2.3. Functional Diagram The following figure shows a block diagram of BC66-NA and illustrates the major functional parts.  Radio frequency ...

  • Page 13: Development Board

    Figure 1: Functional Diagram 2.4. Development Board Quectel provides a complete set of development tools to facilitate the use and testing of BC66-NA 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-NA Hardware Design Application Interfaces 3.1. General Description BC66-NA 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:  Power Supply ...

  • Page 15: Pin Assignment

    NB-IoT Module Series BC66-NA Hardware Design 3.2. Pin Assignment RF_ANT RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED BC66-NA RESERVED RESERVED Top View PWRKEY TXD_AUX USB_MODE RXD_AUX RESERVED ADC0 SIM_GND RESERVED SIM_DATA RESERVED SIM_RST VDD_EXT SIM_CLK RESERVED PO WER UART USIM...

  • Page 16: Pin Description

    NB-IoT Module Series BC66-NA Hardware Design 3.3. Pin Description Table 3: I/O Parameters Definition Type Description Analog input Analog output Digital input Digital output Bidirectional Power input Power output Table 4: Pin Description Power Supply Pin Name Pin No. Description...
  • Page 17 NB-IoT Module Series BC66-NA 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-NA Hardware Design Pin Name Pin No. Description DC Characteristics Comment Receive data RXD_AUX from TXD of DTE 1.8V power domain. Transmit data to TXD_AUX RXD of DTE Debug UART Port Pin Name Pin No. Description DC Characteristics...

  • Page 19: Operating Modes

    NB-IoT Module Series BC66-NA Hardware Design Pin Name Pin No. Description DC Characteristics Comment Pull down the pin to achieve USB USB_MODE download function USB power VUSB_3V3 Vnorm=3.3V supply USB differential Conform to USB 1.1 USB_DP data (+) specifications. Request 90 Ω...

  • Page 20: Deep Sleep

    NB-IoT Module Series BC66-NA Hardware Design Table 5: AP Operating Modes Mode Description Normal In normal mode, the AP handles tasks, such as AT command communication. Idle When all tasks are suspended, the AP will enter idle mode. Table 6: Modem Operating Modes...
  • Page 21 NB-IoT Module Series BC66-NA Hardware Design Idle Idle T3324 T3412 UE inactive time Figure 3: Module Power Consumption in Different Modes (Modem) When the modem remains in PSM and the AP is in idle mode, the module will enter deep sleep mode.

  • Page 22: Power Supply

    Power design for a module is critical to its performance. It is recommended to use a low quiescent current LDO with output current capacity of 0.5A as the power supply for BC66-NA. Alkaline batteries can also be used as the power supply. The supply voltage of the module ranges from 2.1V to 3.63V. When the module is working, please make sure its input voltage will never drop below 2.1V;...

  • Page 23: Power Up/Down Scenarios

    Figure 5: Reference Circuit for Power Supply 3.6. Power up/down Scenarios 3.6.1. Turn on BC66-NA will be powered up after driving the PWRKEY pin to a low level voltage for at least 500ms. Table 9: PWRKEY Pin Pin Name Pin No.

  • Page 24: Turn Off

    PWRKEY cannot be pulled down all the time, otherwise the module will not be able to enter Deep Sleep mode. 3.6.2. Turn off BC66-NA can be powered off though any of the following methods:  Power off by AT+QPOWD=0. ...

  • Page 25: Reset The Module

    NB-IoT Module Series BC66-NA Hardware Design VBAT 1.02s AT+QPOWD=0 VDD_EXT Module RUNNING Status Figure 9: Power down Timing (Power off by AT Command) ≥5ms VBAT VDD_EXT Module RUNNING Status Figure 10: Power down Timing (Power off by Disconnecting VBAT) 3.6.3. Reset the Module Driving the RESET pin to a low level voltage for at least 50ms will reset the module.
  • Page 26 NB-IoT Module Series BC66-NA Hardware Design The recommended circuits of resetting the module are shown below. An open drain/collector driver or button can be used to control the RESET pin. RESET 4.7K Reset pulse Figure 11: Reference Circuit of RESET by Using Driving Circuit...

  • Page 27: Usb Interface

    BC66-NA Hardware Design 3.7. USB Interface The USB interface of BC66-NA module conforms to USB 1.1 specifications and supports full speed (12Mbps) mode. The interface can be used for software debugging and software upgrading, and supports USB serial driver under Windows/Linux operating systems.

  • Page 28: Uart Interfaces

    NB-IoT Module Series BC66-NA Hardware Design  Do not route signal traces under power supply, RF signal traces and other sensitive signal traces. It is important to route the USB differential traces in inner-layer of the PCB, and surround the traces with ground on that layer and ground planes above and below.

  • Page 29: Main Uart Port

    NB-IoT Module Series BC66-NA Hardware Design NOTE When the module enters idle mode with a fixed baud rate, please send AT via UART to wake up the module first before sending other AT commands. 3.8.1. Main UART Port The main UART port supports AT command communication, data transmission and firmware upgrade.

  • Page 30: Auxiliary Uart Port

    NB-IoT Module Series BC66-NA Hardware Design Module TXD_DBG RXD_DBG Figure 16: Reference Design of Debug UART Port 3.8.3. Auxiliary UART Port The auxiliary UART port is designed as a general purpose UART for communication with DTE. It also supports log output for firmware debugging, and hardware flow control*. Its baud rate is 115200bps by default.
  • Page 31 NB-IoT Module Series BC66-NA Hardware Design Module VDD_EXT VCCA VCCB 0.1uF 0.1uF Translator RXD_DBG TXD_DBG TXD_DBG RXD_DBG RXD_AUX TXD_AUX TXD_AUX RXD_AUX GPIO Figure 18: Reference Circuit with Voltage Level Translator Chip Another example with transistor translation circuit is shown as below. The circuit design of dotted line section can refer to the design of solid line section, in terms of both module input and output circuit designs, but please pay attention to the direction of connection.

  • Page 32: Usim Interface

    NB-IoT Module Series BC66-NA Hardware Design 3.3V Module T1IN T2OUT T2IN T1OUT T5OUT T3IN To PC Main Serial Port T4IN T3OUT Level Shifter T4OUT T5IN (1.8V~3.3V) /R1OUT R1OUT R1IN R2OUT R2IN R3OUT R3IN RS-232 Transceiver Figure 20: Sketch Map for RS-232 Interface Match Please visit vendors’...
  • Page 33 NB-IoT Module Series BC66-NA Hardware Design Table 13: Pin Definition of USIM Interface Pin Name Pin No. Description Comment Voltage accuracy: 1.8V± 5%. SIM_VDD Power supply for USIM card Maximum supply current: about 60mA. SIM_CLK Clock signal of USIM card...

  • Page 34: Adc Interface

    NB-IoT Module Series BC66-NA Hardware Design  In order to offer good ESD protection, it is recommended to add a TVS diode array. For more information of TVS diode, please visit http://www.onsemi.com. The ESD protection device should be placed as close to USIM card connector as possible, and make sure the USIM card signal lines go through the ESD protection device first and then to the module.

  • Page 35: Network Status Indication

    NB-IoT Module Series BC66-NA Hardware Design Output data 120ms HIGH idle A UR C or SMS me ssage is received Figure 22: Behaviors of RI When a URC or SMS Message is Received 3.12. Network Status Indication The NETLIGHT signal can be used to indicate the network status of the module. The following table illustrates the module status indicated by NETLIGHT.

  • Page 36: Antenna Interface

    NB-IoT Module Series BC66-NA Hardware Design Antenna Interface The pin 35 is the RF antenna pad. The antenna port has an impedance of 50Ω. 4.1. Pin Definition Table 17: Pin Definition of NB-IoT Antenna Interface Pin Name Pin No. Description...

  • Page 37: Rf Antenna Reference Design

    The RF trace on host PCB connected to the module’s RF antenna pad should be coplanar waveguide or microstrip, whose characteristic impedance should be close to 50Ω.  BC66-NA comes with ground pads which are next to the antenna pad in order to give a better grounding. ...

  • Page 38: Reference Design Of Rf Layout

    NB-IoT Module Series BC66-NA Hardware Design R1 0R RF_ANT Module Figure 24: Reference Design of NB-IoT Antenna Interface 4.4. Reference Design of RF Layout For user’s PCB, the characteristic impedance of all RF traces should be controlled as 50Ω. The impedance of the RF traces is usually determined by the trace width (W), the materials’...
  • Page 39 NB-IoT Module Series BC66-NA Hardware Design Figure 26: Coplanar Waveguide Line Design on a 2-layer PCB Figure 27: Coplanar Waveguide Line Design on a 4-layer PCB (Layer 3 as Reference Ground) Figure 28: Coplanar Waveguide Line Design on a 4-layer PCB (Layer 4 as Reference Ground)

  • Page 40: Antenna Requirements

    NB-IoT Module Series BC66-NA Hardware Design  Use impedance simulation tool to control the characteristic impedance of RF traces as 50Ω.  The GND pins adjacent to RF pins should not be designed as thermal relief pads, and should be fully connected to ground.

  • Page 41: Rf Output Power

    NB-IoT Module Series BC66-NA Hardware Design 4.6. RF Output Power Table 21: RF Conducted Output Power Frequency Band Max. Min. 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm 23dBm± 2dB <-39dBm...

  • Page 42: Rf Receiving Sensitivity

    NB-IoT Module Series BC66-NA Hardware Design 4.7. RF Receiving Sensitivity Table 22: Receiving Sensitivity (with RF Retransmissions) Frequency Band Receiving Sensitivity ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤ -129dBm ≤...

  • Page 43: Recommended Rf Connector For Antenna Installation

    NB-IoT Module Series BC66-NA Hardware Design 4.8. Recommended RF Connector for Antenna Installation If RF connector is used for antenna connection, it is recommended to use the U.FL-R-SMT connector provided by HIROSE. Figure 29: 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.
  • Page 44 NB-IoT Module Series BC66-NA Hardware Design The following figure describes the space factor of mated connector. Figure 31: Space Factor of Mated Connector (Unit: mm) For more details, please visit http://www.hirose.com. BC66-NA_Hardware_Design 43 / 58...

  • Page 45: Electrical And Reliability Characteristics

    3GPP. When the temperature returns to the normal operation temperature levels, the module will meet 3GPP specifications again. 5.2. Current Consumption The table below lists the current consumption of BC66-NA under different states. BC66-NA_Hardware_Design 44 / 58...
  • Page 46 NB-IoT Module Series BC66-NA Hardware Design Table 24: Module Current Consumption (3.3V VBAT Power Supply) Module Mode AP Mode Modem Mode Min. Typ. Max. Unit Power OFF µA (AT+QPOWD=0) μA Deep Sleep Idle @eDRX=81.92s, PTW=40.96s µA μA Light Sleep Idle @DRX=1.28s...
  • Page 47 NB-IoT Module Series BC66-NA Hardware Design B1 @23dBm B2 @23dBm B3 @23dBm B4 @23dBm B5 @23dBm B8 @23dBm B12 @23dBm B13 @23dBm Connected @Single-tone B17 @23dBm Active Normal (3.75kHz B18 @23dBm subcarrier spacing) B19 @23dBm B20 @23dBm B25 @23dBm B26* @23dBm...

  • Page 48: Electrostatic Discharge

    NB-IoT Module Series BC66-NA Hardware Design 5.3. Electrostatic Discharge The module is not protected against electrostatics 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 49: Mechanical Dimensions

    This chapter describes the mechanical dimensions of the module. All dimensions are measured in millimeter (mm), and the dimensional tolerances are ± 0.05mm unless otherwise specified. 6.1. Mechanical Dimensions of the Module Pin 1 Figure 31: BC66-NA Top and Side Dimensions (Unit: mm) BC66-NA_Hardware_Design 48 / 58...
  • Page 50 NB-IoT Module Series BC66-NA Hardware Design Figure 32: Module Bottom Dimension (Bottom View) BC66-NA_Hardware_Design 49 / 58...

  • Page 51: Recommended Footprint

    NB-IoT Module Series BC66-NA Hardware Design 6.2. Recommended Footprint Figure 33: Recommended Footprint (Unit: mm) NOTE For easy maintenance of the module, it is recommended to keep about 3mm between the module and other components on the motherboard. BC66-NA_Hardware_Design 50 / 58...

  • Page 52: Top And Bottom Views Of The Module

    6.3. Top and Bottom Views of the Module Figure 32: Top View of the Module Figure 33: Bottom View of the Module NOTE These are renderings of BC66-NA module. For authentic appearance, please refer to the module that you receive from Quectel. BC66-NA_Hardware_Design 51 / 58...

  • Page 53: Storage, Manufacturing And Packaging

    Storage, Manufacturing and Packaging 7.1. Storage BC66-NA module is stored in a vacuum-sealed bag. It is rated at MSL 3, and 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 54: Manufacturing And Soldering

    NB-IoT Module Series BC66-NA 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 55: Packaging

    NB-IoT Module Series BC66-NA Hardware Design Reflow Zone Max slope 2 to 3° C/sec Reflow time (D: over 220° C) 40 to 60 sec Max temperature 238° C ~ 245° C Cooling down slope 1 to 4° C/sec Reflow Cycle...
  • Page 56 NB-IoT Module Series BC66-NA Hardware Design Figure 34: Tape Dimensions (Unit: mm) Figure 35: Reel Dimensions (Unit: mm) BC66-NA_Hardware_Design 55 / 58...

  • Page 57: Appendix A References

    Table 27: Related Documents Document Name Remark Quectel_BC66-NA-TE-B_User_Guide BC66-NA-TE-B User Guide Quectel_RF_Layout_Application_Note RF Layout Application Note Quectel_BC66&BC66-NA_AT_Commands_Manual BC66/BC66-NA AT Commands Manual Quectel_Module_Secondary_SMT_User_Guide Module Secondary SMT User Guide Table 28: Terms and Abbreviations Abbreviation Description Analog-to-Digital Converter CoAP Constrained Application Protocol...
  • Page 58 NB-IoT Module Series BC66-NA 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 59 NB-IoT Module Series BC66-NA 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...

Table of Contents