Quectel BC66 Manual
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Summary of Contents for Quectel BC66
- Page 1 BC66&BC660K-GL Compatible Design NB-IoT Module Series Version: 1.0 Date: 2021-02-18 Status: Released www.quectel.com...
- Page 2 To the maximum extent permitted by law, Quectel excludes all liability for any loss or damage suffered in connection with the use of the functions and features under development, regardless of whether such loss or damage may have been foreseeable.
- Page 3 BC66&BC660K-GL Compatible Design Copyright The information contained here is proprietary technical information of Quectel. Transmitting, reproducing, disseminating and editing this document as well as using the content without permission are forbidden. Offenders will be held liable for payment of damages. All rights are reserved in the event of a patent grant or registration of a utility model or design.
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Page 4: About The Document
NB-IoT Module Series BC66&BC660K-GL Compatible Design About the Document Revision History Version Date Author Description 2020-11-26 Clifton HE Creation of the document 2021-02-18 Clifton HE First official release BC66&BC660K-GL_Compatible_Design 3 / 30... -
Page 5: Table Of Contents
Turn on ............................16 4.3. Turn off ............................18 4.4. Reset ............................19 4.4.1. Reset BC66/BC660K-GL with Hardware Method ............19 4.4.2. Reset BC66/BC660K-GL with Software Method ............20 4.5. Network Status Indication ......................20 4.6. USB Interface ..........................21 4.7. - Page 6 Table 3: Features Overview ......................... 9 Table 4: I/O Parameters Definition ......................12 Table 5: Pin Comparison between BC66 and BC660K-GL ............... 12 Table 6: Module Operating Voltage Range ....................15 Table 7: Power Switching Circuit Design Based on Power Supply Type ........... 16 Table 8: UART Interface Voltage Domain ....................
- Page 7 NB-IoT Module Series BC66&BC660K-GL Compatible Design Figure Index Figure 1: BC66 & BC660K-GL Pin Assignment (Top View) ................11 Figure 2: VBAT Voltage Waveform Diagram ....................15 Figure 3: Compatible Reference Design for Power Supply ............... 16 Figure 4: Compatible Reference Design for BOOT/PWRKEY Controlled with a Button ......17 Figure 5: BC66 &...
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Page 8: Introduction
NB-IoT Module Series BC66&BC660K-GL Compatible Design Introduction Quectel NB-IoT module BC66 is compatible with Quectel NB-IoT module BC660K-GL. This document outlines the compatible design for the two modules. 1.1. Special Mark Table 1: Special Mark Mark Definition When an asterisk (*) is used after a function, feature, interface, pin name, AT command, or argument, it indicates that the function, feature, interface, pin name, AT command, or argument is under development and currently not supported, unless otherwise specified. -
Page 9: General Descriptions
General Descriptions 2.1. Product Description BC66 and BC660K-GL are high-performance, low power consumption, multi-band NB-IoT modules designed as compatible products to meet different user requirements. This compatible design manual helps to ensure smooth migrations between the two modules in your products. -
Page 10: Features Overview
NB-IoT Module Series BC66&BC660K-GL Compatible Design 2.2. Features Overview The following table compares the general properties and features of BC66 and BC660K-GL modules. Table 3: Features Overview Feature BC66 BC660K-GL 2.2–4.3 V 2.1–3.63 V Power Supply Typ. 3.3 V Typ. 3.3 V Peak Current VBAT: Max. - Page 11 NB-IoT Module Series BC66&BC660K-GL Compatible Design support baud rate of 921600 bps (default) Debug UART interface: Used for debugging and the default baud rate is 115200 bps Auxiliary UART interface: Used for debugging and the default baud rate is 115200 bps Signal level: 1.8 V...
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Page 12: Pin Assignment
NB-IoT Module Series BC66&BC660K-GL Compatible Design 2.3. Pin Assignment The following figure shows the pin assignment of BC66 and BC660K-GL. ANT_RF RF_ANT RESERVED RESERVED RESERVED GPIO1 RESERVED RESERVED RESERVED GPIO2 RESERVED RESERVED GRFC2 RESERVED RESERVED GPIO3 RESERVED RESERVED RESERVED RESERVED... -
Page 13: Pin Description
NB-IoT Module Series BC66&BC660K-GL Compatible Design Pin Description This chapter describes and compares the pins of BC66 and BC660K-GL. Table 4: I/O Parameters Definition Type Description Analog Input Digital Input Digital Input/Output Digital Output Power Input Power Output Table 5: Pin Comparison between BC66 and BC660K-GL... - Page 14 NB-IoT Module Series BC66&BC660K-GL Compatible Design Dedicated ground Dedicated Ground for SIM_GND USIM_GND for USIM card USIM card SIM_DATA USIM card data USIM_DATA USIM card data SIM_RST USIM card reset USIM_RST USIM card reset SIM_CLK USIM card clock USIM_CLK USIM card clock...
- Page 15 NB-IoT Module Series BC66&BC660K-GL Compatible Design Power supply for the Power supply for the VBAT_RF VBAT module’s RF part module Pull down the pin USB_MODE to enable USB RESERVED download function VUSB_3V3 USB power supply RESERVED USB differential USB_DP RESERVED...
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Page 16: Hardware Reference Design
LDO with an output capacity of 0.5 A to regulate the power supply for both BC66 and BC660K-GL. To ensure better power supply performance and compatibility, the recommended input voltage is 3.3 V. Also, it is recommended to add 100 μF, 100 nF, 100 pF and 22 pF capacitors near the VBAT pins of BC66 BC66&BC660K-GL_Compatible_Design... -
Page 17: Turn On
The methods of turning on BC66 and BC660K-GL are different: ⚫ BC66: It can be turned on by driving its PWRKEY pin low for at least 500 ms. It is recommended to use an open drain/collector driver or a button to control the PWRKEY. - Page 18 BC66: 42 ms VDD_EXT VDD_EXT BC66 BOOTING RUNNING RUNNING BC660K-GL BOOTING Figure 5: BC66 & BC660K-GL Turn-on Timing NOTES 1. For BC66: Ensure that VBAT_ BB and VBAT_RF are stable before driving low PWRKEY to turn on BC66&BC660K-GL_Compatible_Design 17 / 30...
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Page 19: Turn Off
NB-IoT Module Series BC66&BC660K-GL Compatible Design BC66 and that PWRKEY is not kept low all the time as otherwise the module cannot enter Deep Sleep mode. 2. For BC660K-GL: After the module is powered off, it can be turned on again only after its VBAT voltage drops below 0.7 V. -
Page 20: Reset
The black part in the above figure is for BC660K-GL. 4.4. Reset BC66 and BC660K-GL can be reset with hardware and software methods, which are illustrated below. 4.4.1. Reset BC66/BC660K-GL with Hardware Method Driving the RESET/RESET_N low for at least 50 ms resets BC66/BC660K-GL. The reference design for resetting the module is shown below. -
Page 21: Reset Bc66/Bc660K-Gl With Software Method
The black part in the above figure is for BC660K-GL. 4.4.2. Reset BC66/BC660K-GL with Software Method AT+QRST=1 command can be used to reset BC66/BC660K-GL. For more details about the command, see document [2] and document [4]. 4.5. Network Status Indication The NETLIGHT signal can drive a network status indication LED to indicate the network status of BC66/BC660K-GL. -
Page 22: Usb Interface
The NETLIGHT function of BC660K-GL is under development. 4.6. USB Interface BC66 has a USB interface which conforms to USB 1.1 specifications and supports full speed (12 Mbps) mode. Supporting USB serial drivers for Windows/Linux operating systems, the interface can be used for software debugging and software upgrade. -
Page 23: Usim Interface
NOTES For BC66, its USB_MODE must be pulled down to realize the USB download function. For BC66, when its USB interface is used for log capturing, the module cannot enter Deep Sleep mode. For BC66, to use its USB function, an external 3.3 V power supply should be provided. -
Page 24: Uart Interfaces
1.8/3.3 V Debug UART A compatible voltage level translation reference design for BC66/BC660K-GL’s UART interfaces is shown below. For designs of the circuits in dotted lines, refer to those in solid lines, and pay attention to the direction of connection. -
Page 25: Adc Interface
When VIO_SEL is grounded and VBAT ≥ 3.3 V, VDD_EXT = 3.3 V; When VIO_SEL is floating, VDD_EXT = 1.8 V. 4.9. ADC Interface BC66 modules provide a 10-bit ADC input channel to read the voltage value of ADC0, while BC660K-GL provides a 12-bit ADC input channel of the same use. ⚫... -
Page 26: Rf Antenna Interface
BC66&BC660K-GL Compatible Design 4.10. RF Antenna Interface BC660K-GL’s antenna interface ANT_RF is compatible with BC66’s antenna interface RF_ANT. The impedance of the antenna interfaces is 50 Ω. For better RF performance, it is recommended to reserve a π-type matching circuit (R1/C1/C2) close to the antenna. -
Page 27: Recommended Footprint And Stencil Design
BC66&BC660K-GL Compatible Design Recommended Footprint and Stencil Design This chapter introduces the recommended compatible footprint and stencil design of BC66 and BC660K-GL. All dimensions are measured in millimeter (mm), and the tolerance for dimensions is ± 0.05 mm unless otherwise specified. - Page 28 NB-IoT Module Series BC66&BC660K-GL Compatible Design The following figure shows the recommended compatible footprint of BC66 and BC660K-GL. 18.10± 0.15 15.80± 0.15 0.35 1.00 Pin 1 6.10 4.35 1.10 1.80 0.35 1.80 17.70± 0.15 20.00± 0.15 1.00 6.15 1.00 0.70 0.35...
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Page 29: Recommended Stencil Design
Figure 17: Installation Sketch for BC66 & BC660K-GL 5.2. Recommended Stencil Design BC66 and BC660K-GL have the same PCB thickness. To ensure soldering quality of the two modules, the thickness of stencil is recommended to be 0.15–0.18 mm. For more details, see document [1] and document [3]. -
Page 30: Appendix References
NB-IoT Module Series BC66&BC660K-GL Compatible Design Appendix References Table 10: Related Documents Document Name Description Quectel_BC66_Hardware_Design BC66 Hardware Design Quectel_BC66_AT_Commands_Manual BC66 AT Commands Manual Quectel_BC660K-GL_Hardware_Design BC660K-GL Hardware Design Quectel_BC660K-GL_AT_Commands_Manual BC660K-GL AT Commands Manual Table 11: Terms and Abbreviations Abbreviation Description Analog-to-Digital Converter... - Page 31 NB-IoT Module Series BC66&BC660K-GL Compatible Design UART Universal Asynchronous Receiver & Transmitter USIM Universal Subscriber Identification Module Li-MnO2 Lithium Manganese Dioxide Li-SOCl2 Lithium Thionyl Chloride BC66&BC660K-GL_Compatible_Design 30 / 30...