Quectel BC95-TE-B User manual

BC95-TE-B User Guide
NB-IoT Module Series
Rev. BC95-TE-B_User_Guide_V1.0
Date: 2017-08-07
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Copyright © Quectel Wireless Solutions Co., Ltd. 2017. All rights reserved.
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About the Document
History
Revision
Date
Author
Description
1.0
2017-08-07
Ewent LU/
Vae LIU
Initial
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Contents
About the Document...................................................................................................................................2
Contents.......................................................................................................................................................3
Table Index...................................................................................................................................................4
Figure Index.................................................................................................................................................5
1Introduction..........................................................................................................................................6
1.1. Safety Information......................................................................................................................6
2Product Concept..................................................................................................................................8
2.1. Key Features .............................................................................................................................8
2.2. Functional Diagram ...................................................................................................................9
2.3. Interface Distribution Diagram.................................................................................................10
2.4. Arduino Interface Definition.....................................................................................................11
3Operation Procedures.......................................................................................................................12
3.1. Operation Procedures with Single Board................................................................................12
3.1.1. Interface Diagram of Using BC95-TE-B Alone ..............................................................12
3.1.2. Operation Procedures of Using BC95-TE-B Alone........................................................13
3.2. Operation Procedures with Multi Boards.................................................................................13
3.2.1. Interface Diagram of Using Multi Boards.......................................................................14
3.2.2. Operation Procedures of Using Multi Boards................................................................15
3.2.3. Description of Pin Connection........................................................................................16
4Electrical and Reliability....................................................................................................................18
4.1. Absolute Maximum Ratings.....................................................................................................18
4.2. Operating Temperature............................................................................................................18
5Mechanical Dimensions....................................................................................................................20
5.1. Mechanical Dimensions of BC95-TE-B...................................................................................20
5.2. Design Effect Drawings of BC95-TE-B....................................................................................21
6Appendix A References.....................................................................................................................22
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Table Index
TABLE 1: KEY FEATURES OF BC95-TE-B........................................................................................................ 8
TABLE 2: INTERFACES OF BC95-TE-B .......................................................................................................... 10
TABLE 3: PIN CONNECTION BETWEEN BC95-TE-B AND STM32-L476RG MCU........................................ 16
TABLE 4: ABSOLUTE MAXIMUM RATINGS .................................................................................................... 18
TABLE 5: OPERATING TEMPERATURE.......................................................................................................... 18
TABLE 6: RELATED DOCUMENTS.................................................................................................................. 22
TABLE 7: TERMS AND ABBREVIATIONS........................................................................................................ 22
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Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM OF BC95-TE-B........................................................................................ 9
FIGURE 2: INTERFACE DISTRIBUTION DIAGRAM OF BC95-TE-B.............................................................. 10
FIGURE 3: ARDUINO INTERFACE DEFINITION..............................................................................................11
FIGURE 4: INTERFACE DIAGRAM OF USING BC95-TE-B ALONE............................................................... 12
FIGURE 5: UART PORTS DISPLAYED ON PC................................................................................................ 13
FIGURE 6: INTERFACE DIAGRAM OF USING MULTI BOARDS.................................................................... 14
FIGURE 7: STM32-NUCLEO INTERFACE DIAGRAM (TOP VIEW)................................................................ 14
FIGURE 8: STM32-NUCLEO MODIFICATION DIAGRAM (BOTTOM VIEW).................................................. 15
FIGURE 9: ST-LINK INTERFACE DISPLAYED ON PC.................................................................................... 16
FIGURE 10: PIN CONNECTION BETWEEN BC95-TE-B AND STM32-L476RG MCU ................................... 17
FIGURE 11: DIMENSIONS OF BC95-TE-B (TOP VIEW)................................................................................. 20
FIGURE 12: TOP VIEW OF THE BC95-TE-B................................................................................................... 21
FIGURE 13: BOTTOM VIEW OF THE BC95-TE-B........................................................................................... 21
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1Introduction
In order to help customers to develop applications with Quectel BC95 module, Quectel supplies
corresponding TE-B evaluation board to test the module. This document can help customers quickly
understand BC95-TE-B interface specifications, electrical and mechanical details and know how to use it.
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. 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 the customers’ failure to comply with these precautions.
Full attention must be given to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. You must comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it is
switched off. The operation of wireless appliances in an aircraft is forbidden, so as
to prevent interference with communication systems. Consult the airline staff about
the use of wireless devices on boarding the aircraft, if your device offers an
Airplane Mode which must be enabled prior to boarding an aircraft.
Switch off your wireless device when in hospitals, clinics or other health care
facilities. These requests are desinged to prevent possible interference with
sensitive medical equipment.
Cellular terminals or mobiles operating over radio frequency signal and cellular
network cannot be guaranteed to connect in all conditions, for example no mobile
fee or with an invalid (U)SIM card. While you are in this condition and need
emergent help, please remember using emergency call. In order to make or
receive a call, the cellular terminal or mobile must be switched on and in a service
area with adequate cellular signal strength.
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Your cellular terminal or mobile contains a transmitter and receiver. When it is ON,
it receives and transmits radio frequency energy. RF interference can occur if it is
used close to TV set, radio, computer or other electric equipment.
In locations with potentially explosive atmospheres, obey all posted signs to turn
off wireless devices such as your phone or other cellular terminals. Areas with
potentially explosive atmospheres include fuelling areas, below decks on boats,
fuel or chemical transfer or storage facilities, areas where the air contains
chemicals or particles such as grain, dust or metal powders, etc.
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2Product Concept
BC95-TE-B is a NB-IoT evaluation board which supports Arduino interface. Designed in 74.0mm ×
70.0mm × 1.6mm form factor, BC95-TE-B can be used either alone or in conjunction with STM32
Nucleo-64 development board, in order to develop and debug applications for communication with mobile
network operators’ infrastructure equipment through the NB-IoT radio protocol (3GPP Rel-13).
2.1. Key Features
The following table describes the detailed features of BC95-TE-B.
Table 1: Key Features of BC95-TE-B
Feature
Details
Power Supply
USB interface:
Supply voltage: 4.75V ~ 5.25V, typical supply voltage: 5.0V
Arduino interface:
Supply voltage: 4.75V ~ 5.25V, typical supply voltage: 5.0V
Transmitting Power
23dBm±2dB
Temperature Range
Operation temperature range: -30°C ~ +75°C1)
Extended temperature range: -40°C ~ +85°C2)
USIM Interface
Only support 3.0V external USIM card
USB Interfaces
Support two UART ports
Main port (Ch A):
Used for AT command communication and data transmission, and
the baud rate is 9600bps
Main port can also be used for firmware upgrading, and the baud rate
is 115200bps
When the module is communicating with MCU, please keep Ch A
unconnected.
Debug port (Ch B):
Debug port is used for debugging
Only support 921600bps baud rate
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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. There is no unrecoverable malfunction. There are also no effects on
radio spectrum and no harm to radio network. Only one or more parameters like Pout might reduce in
their value and exceed the specified tolerances. When the temperature returns to the normal
operating temperature levels, the module will meet 3GPP specifications again.
3. 3) DFOTA function is only supported on B657 version or later.
2.2. Functional Diagram
The following figure shows a block diagram of BC95-TE-B.
BC95
U101
Micro USB
J209
USB-UART
Bridge
U202
Switch
J203
Arduino
J207
LDO
U102 U103
USIM
J201
RF
J208
Figure 1: Functional Diagram of BC95-TE-B
Arduino Interface
Used to connect with STM32 Nucleo-64 development board
RESET Button
Used to reset BC95 module
Physical Characteristics
Size: (74.0±0.15)mm ×(70.0±0.15)mm ×(1.6±0.2mm)
Firmware Upgrade
Firmware upgrade via main port or DFOTA3)
Antenna Interface
Connected to antenna pad with 50 ohm impedance control
NOTES
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2.3. Interface Distribution Diagram
The following figure shows an interface distribution diagram of BC95-TE-B.
Figure 2: Interface Distribution Diagram of BC95-TE-B
The table below shows the description of BC95-TE-B interfaces.
Table 2: Interfaces of BC95-TE-B
Interface
Designator
Description
Power Supply
J209
Power supply for USB interface
J202
Power supply for Arduino interface
USB Interface
J209
Support two UART ports
USIM Card Interface
J201
Micro USIM card connector
J205 J207
J202 J204
J203
J201
S201
J209
J208
J101
D204
J103
J104
J102
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2.4. Arduino Interface Definition
The following figure shows the Arduino interface definition of BC95-TE-B.
Figure 3: Arduino Interface Definition
Arduino Interface
J202, J204, J205, J207
Standard Arduino interface
RFAntenna Interface
J208
RF SMA connector
UART Switch
J203
Used to switch communication objects of BC95
main port: “BC95 TO USB” or “BC95 TO MCU”
RESET Button
S201
Used to reset BC95 module
LED Indicator
D204
Used to indicate network status
Test Points
J101, J102, J103, J104
Used to test the basic functionalities of BC95
module
hy
GND
ADC
+3.3V
+3.3V
+5V
GND
RI
RESET_N
MCU_TX
MCU_RX
GND
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3Operation Procedures
This chapter mainly illustrates the operation procedures of BC95-TE-B. BC95-TE-B can be used alone to
upgrade and debug NB-IoT applications based on BC95-TE-B. Meanwhile, it can also be used in
conjunction with an STM32 Nucleo-64 development board via Arduino interface to develop NB-IoT
applications based on STM32. The following part describes the two ways of using BC95-TE-B in detail.
3.1. Operation Procedures with Single Board
This section elaborates the operation procedures of using the BC95-TE-B alone.
3.1.1. Interface Diagram of Using BC95-TE-B Alone
Figure 4: Interface Diagram of Using BC95-TE-B Alone
J203
J208
J203
J209
S201
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3.1.2. Operation Procedures of Using BC95-TE-B Alone
1. Install USB-UART driver, which can be downloaded from the following address:
https://www.exar.com/product/interface/uarts/usb-uarts/xr21v1412;
2. Insert Micro USIM card into J203, please choose an appropriate USIM card according to hardware
versions of BC95 module.
3. Connect a rod antenna with SMAconnector on J208;
4. Switch “UART_SWITCH”to “BC95 TO USB” state;
5. Connect the J209 with PC via Micro USB cable. After turning on BC95-TE-B, UART port information
will be shown on device manager of PC. CH A is the main port and can be used for AT command
communication and firmware upgrading. CH B is the debug port and can be used to view log. For
details of port configuration, please refer to document [1].
Figure 5: UART Ports Displayed on PC
In this process, S201 can be used to reset the BC95 module.
3.2. Operation Procedures with Multi Boards
This section elaborates the operation procedures of using the BC95-TE-B in conjunction with an STM32
Nucleo-64 development board.
NOTE
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3.2.1. Interface Diagram of Using Multi Boards
Figure 6: Interface Diagram of Using Multi Boards
Figure 7: STM32-Nucleo Interface Diagram (Top View)
J202
J205
J204
J207
J209
J203
J207
J208
CN6
CN5
CN8
CN9
CN1
CN2
2J2
03
JP6
JP5
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Figure 8: STM32-Nucleo Modification Diagram (Bottom View)
3.2.2. Operation Procedures of Using Multi Boards
1. Install driver for STM32-Nucleo board, which can be downloaded from the following address:
http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-to
ols/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l476rg.html;
2. Install USB-UART driver, which can be downloaded from the following address:
https://www.exar.com/product/interface/uarts/usb-uarts/xr21v1412;
3. Remove 0 ohm resistors of SB13 and SB14 by soldering iron, and then solder them onto SB62 and
SB63 respectively;
4. Short-circuit pin 1 & 2 of CN2, pin 3 & 4 of CN2, pin 1 & 2 of JP5 and pin 1 & 2 of JP6;
5. Insert Micro USIM card into J203, please choose an appropriate USIM card according to hardware
versions of BC95 module.
6. Connect rod antenna with SMAconnector on J208;
7. Switch “UART_SWITCH”to “BC95 TO MCU” state;
8. Connect Arduino interface to STM32-Nucleo board, and connect J202, J204, J205 and J207 of
BC95-TE-B to CN6, CN8, CN5 and CN9 respectively.
9. Connect CN1 of STM32-Nucleo board with PC via Mini USB cable. After powering on BC95 module,
device information will be shown on the device manager of PC.
SB62
SB13 SB14
SB63
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Figure 9: ST-LINK Interface Displayed on PC
3.2.3. Description of Pin Connection
The table below shows the pin connection between BC95-TE-B and STM32-L476RG MCU.
Table 3: Pin Connection between BC95-TE-B and STM32-L476RG MCU
No.
MCU (Morpho)
Arduino
BC95-TE-B
Remark
1
PA2
D1
CN9-2
MCU_RX
Main port RX
2
PA3
D0
CN9-1
MCU_TX
Main port TX
3
PA0
A0
CN8-1
RI
4
PA5
D13
CN5-6
RESET_N
Active high
5
NC
NC
CN6-1
ADC
6
+3V3
+3V3
CN6-2, 4
+3.3V
3.3V power supply
7
+5V
+5V
CN6-5
+5V
5.0V power supply
8
GND
GND
CN5-7, CN6-6, 7
GND
Ground
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The following figure shows the pin connection between BC95-TE-B and STM32-L476RG MCU.
Figure 10: Pin Connection between BC95-TE-B and STM32-L476RG MCU
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4Electrical and Reliability
4.1. Absolute Maximum Ratings
Absolute maximum ratings for power supply and voltage on digital and analog pins of the BC95 module
are listed in the following table.
Table 4: Absolute Maximum Ratings
4.2. Operating Temperature
The operating temperature is listed in the following table.
Table 5: Operating Temperature
Parameter
Min.
Max.
Unit
+5V
-0.3
6
V
VBAT
-0.3
+4.25
V
Current of Power Supply
0
0.3
A
Voltage at Digital Pins
-0.3
+3.3
V
Voltage atAnalog Pins
-0.3
+4.25
V
Voltage at Digital/Analog Pins in Power Down Mode
-0.25
+0.25
V
Parameter
Min.
Typ.
Max.
Unit
Operation Temperature Range1)
-30
+25
+75
ºC
Extended Temperature Range2)
-40
+85
ºC
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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. There is no unrecoverable malfunction. There are also no effects on
radio spectrum and no harm to radio network. Only one or more parameters like Pout might reduce in
their value and exceed the specified tolerances. When the temperature returns to the normal
operating temperature levels, the module will meet 3GPP specifications again.
NOTES
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