Huawei 201705EM300 User Manual
eM300-8a
Hardware Design
eLTE-IoT Module Series
Rev. eM300-8a_Hardware_Design_V1.0
Date: 2017-03-17
www.quectel.com
eLTE-IoT Module Series
eLTE-IoT eM300-8a Hardware Design
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Revision
Date
Author
Description
1.0
2017-03-17
Bryant CHEN/
Mark ZHANG
Initial
eLTE-IoT eM300-8a Hardware Design
About the Document
History
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Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 7
1.1. Safety Information ................................................................................................................... 8
1.2. FCC statement ........................................................................................................................ 9
1.2.1. FCC Regulations: ............................................................................................................. 9
1.2.2. RF Exposure Information ................................................................................................. 9
1.2.3. IMPORTANT NOTE: ........................................................................................................ 9
1.2.4. USERS MANUAL OF THE END PRODUCT: .................................................................. 9
1.2.5. LABEL OF THE END PRODUCT: .................................................................................. 10
2 Product Concept ................................................................................................................................ 11
2.1. General Description ............................................................................................................... 11
2.2. Key Features ......................................................................................................................... 12
2.3. Functional Diagram ............................................................................................................... 13
2.4. Evaluation Board ................................................................................................................... 13
3 Application Functions ....................................................................................................................... 14
3.1. General Description ............................................................................................................... 14
3.2. Pin Assignment ...................................................................................................................... 15
3.3. Pin Description ...................................................................................................................... 16
3.4. Operating Modes ................................................................................................................... 19
3.5. Power Supply ........................................................................................................................ 20
3.5.1. Power Supply Pins ......................................................................................................... 20
3.5.2. Reference Design for Power Supply .............................................................................. 20
3.6. Power on and down Scenarios ............................................................................................. 21
3.6.1. Power on ........................................................................................................................ 21
3.6.2. Power down.................................................................................................................... 22
3.6.3. Reset the Module ........................................................................................................... 22
3.7. SWD Interface ....................................................................................................................... 23
3.8. UART Interfaces .................................................................................................................... 24
3.8.1. Main Port ........................................................................................................................ 25
3.8.2. Debug Port ..................................................................................................................... 26
3.8.3. The UART Application .................................................................................................... 26
3.9. ADC Interface* ....................................................................................................................... 27
3.10. GPIO Interface ....................................................................................................................... 28
3.11. Behaviors of the RI* .............................................................................................................. 29
3.12. Network Status Indication* .................................................................................................... 29
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4 Antenna Interface ............................................................................................................................... 31
4.1. RF Reference Design ............................................................................................................ 31
4.2. Reference Design of RF Layout ............................................................................................ 32
4.3. RF Receiving Sensitivity ........................................................................................................ 34
4.4. Antenna Requirement ........................................................................................................... 34
4.5. RF Cable Welding ................................................................................................................. 35
5 Electrical, Reliability and Radio Characteristics ............................................................................ 36
5.1. Absolute Maximum Ratings................................................................................................... 36
5.2. Operating Temperature ......................................................................................................... 37
5.3. Current Consumption ............................................................................................................ 37
6 Mechanical Dimensions .................................................................................................................... 38
6.1. Mechanical Dimensions of the Module ................................................................................. 38
6.2. Recommended Footprint ....................................................................................................... 40
7 Storage, Manufacturing and Packaging .......................................................................................... 41
7.1. Storage .................................................................................................................................. 41
7.2. Manufacturing and Soldering ................................................................................................ 42
7.3. Packaging .............................................................................................................................. 43
7.3.1. Tape and Reel Packaging .............................................................................................. 43
8 Appendix A Reference ....................................................................................................................... 45
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Table Index
TABLE 1: FREQUENCY BANDS OF EM300-8A MODULE ............................................................................... 11
TABLE 2: EM300-8A KEY FEATURES .............................................................................................................. 12
TABLE 3: I/O PARAMETERS DEFINITION ....................................................................................................... 16
TABLE 4: PIN DESCRIPTION ........................................................................................................................... 16
TABLE 5: OVERVIEW OF OPERATING MODES ............................................................................................. 19
TABLE 6: VBAT, VDD_EXT AND GND PINS .................................................................................................... 20
TABLE 7: RESET CHARACTERISTICS ........................................................................................................... 22
TABLE 8: PIN DEFINITION OF SWD INTERFACES ........................................................................................ 23
TABLE 9: PIN DEFINITION OF THE UART INTERFACES .............................................................................. 24
TABLE 10: LOGIC LEVELS OF THE UART INTERFACES .............................................................................. 25
TABLE 11: PIN DEFINITION OF THE ADC ....................................................................................................... 28
TABLE 12: PIN DEFINITION OF THE GPIO INTERFACE ............................................................................... 28
TABLE 13: BEHAVIORS OF THE RI ................................................................................................................. 29
TABLE 14: WORKING STATE OF THE NETLIGHT .......................................................................................... 29
TABLE 15: PIN DEFINITION OF THE RF_ANT ................................................................................................ 31
TABLE 16: RF RECEIVING SENSITIVITY (MCS-1, BLER <10%) ................................................................... 34
TABLE 17: ANTENNA CABLE REQUIREMENT ............................................................................................... 34
TABLE 18: ANTENNA REQUIREMENTS .......................................................................................................... 34
TABLE 19: ABSOLUTE MAXIMUM RATINGS .................................................................................................. 36
TABLE 20: OPERATING TEMPERATURE ........................................................................................................ 37
TABLE 21: CURRENT CONSUMPTION ........................................................................................................... 37
TABLE 22: RELATED DOCUMENTS ................................................................................................................ 45
TABLE 23: TERMS AND ABBREVIATIONS ...................................................................................................... 45
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Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 13
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 15
FIGURE 3: REFERENCE CIRCUIT FOR THE VBAT AND VDD_EXT INPUT ................................................. 21
FIGURE 4: TURN-ON TIMING .......................................................................................................................... 21
FIGURE 5: TURN-OFF TIMING ........................................................................................................................ 22
FIGURE 6: REFERENCE CIRCUIT OF RESET BY USING DRIVING CIRCUIT ............................................. 23
FIGURE 7: REFERENCE CIRCUIT OF RESET BY USING BUTTON ............................................................. 23
FIGURE 8: REFERENCE DESIGN FOR SWD INTERFACE............................................................................ 24
FIGURE 9: REFERENCE DESIGN FOR MAIN PORT ..................................................................................... 25
FIGURE 10: REFERENCE DESIGN FOR DEBUG PORT ............................................................................... 26
FIGURE 11: LEVEL MATCH DESIGN FOR 3.3V SYSTEM .............................................................................. 26
FIGURE 12: SKETCH MAP FOR RS-232 INTERFACE MATCH ...................................................................... 27
FIGURE 13: BEHAVIORS OF RI WHEN A URC OR SMS IS RECEIVED ....................................................... 29
FIGURE 14: REFERENCE DESIGN FOR NETLIGHT ..................................................................................... 30
FIGURE 15: REFERENCE DESIGN FOR RF .................................................................................................. 31
FIGURE 16: MICROSTRIP LINE DESIGN ON A 2-LAYER PCB ...................................................................... 32
FIGURE 17: COPLANAR WAVEGUIDE LINE DESIGN ON A 2-LAYER PCB .................................................. 32
FIGURE 18: COPLANAR WAVEGUIDE LINE DESIGN ON A 4-LAYER PCB (LAYER 3 AS REFERENCE
GROUND) .................................................................................................................................................. 33
FIGURE 19: COPLANAR WAVEGUIDE LINE DESIGN ON A 4-LAYER PCB (LAYER 4 AS REFERENCE
GROUND) .................................................................................................................................................. 33
FIGURE 20: RECOMMENDED RF CABLE WELDING .................................................................................... 35
FIGURE 21: TOP AND SIDE DIMENSIONS OF EM300-8A MODULE (UNIT: MM) ......................................... 38
FIGURE 22: BOTTOM DIMENSIONS OF EM300-8A MODULE (UNIT: MM) ................................................... 39
FIGURE 23: RECOMMENDED FOOTPRINT (UNIT: MM) ................................................................................ 40
FIGURE 26: REFLOW SOLDERING THERMAL PROFILE .............................................................................. 42
FIGURE 27: TAPE DIMENSIONS ..................................................................................................................... 43
FIGURE 28: REEL DIMENSIONS ..................................................................................................................... 44
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1 Introduction
This document defines the eM300-8a module and describes its hardware interface which are connected
with your application and the air interface.
This document can help you quickly understand module interface specifications, electrical and
mechanical details. Associated with application note and user guide, you can use eM300-8a module to
design and set up mobile applications easily.
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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 USIM/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.
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.
eLTE-IoT eM300-8a Hardware Design
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 eM300-8a 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 customer‟s failure to comply with these precautions.
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1.2. FCC statement
1.2.1. FCC Regulations:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) This device must accept any interference received, including interference that
may cause undesired operation.
This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiated radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modifications not expressly approved by the party responsible for compliance could void the user„s
authority to operate the equipment.
1.2.2. RF Exposure Information
This device complies with FCC radiation exposure limits set forth for an uncontrolled environment. In order to avoid the
possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than
20cm (8 inches) during normal operation.
1.2.3. IMPORTANT NOTE:
This module is intended for OEM integrator. The OEM integrator is still responsible for the FCC compliance requirement of
the end product, which integrates this module. 20cm minimum distance has to be able to be maintained between the
antenna and the users for the host this module is integrated into. Under such configuration, the FCC radiation exposure
limits set forth for an population/uncontrolled environment can be satisfied.
Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this
equipment.
1.2.4. USERS MANUAL OF THE END PRODUCT:
In the users manual of the end product, the end user has to be informed to keep at least 20cm separation with the antenna
while this end product is installed and operated. The end user has to be informed that the FCC radio-frequency exposure
guidelines for an uncontrolled environment can be satisfied. The end user has to also be informed that any changes or
modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment. If the
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size of the end product is smaller than 8x10cm, then additional FCC part 15.19 statement is required to be available in the
users manual: This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: (1) this
device may not cause harmful interference and (2) this device must accept any interference received, including interference
that may cause undesired operation.
1.2.5. LABEL OF THE END PRODUCT:
The final end product must be labeled in a visible area with the following " Contains TX FCC ID: QIS201705EM300". If the
size of the end product is larger than 8x10cm, then the following FCC part 15.19 statement has to also be
available on the label: This device complies with Part 15 of FCC rules.
Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device
must accept any interference received, including interference that may cause undesired operation.
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Mode
eM300-8a
TDD
902~928MHz
eLTE-IoT eM300-8a Hardware Design
2 Product Concept
2.1. General Description
eM300-8a is designed to communicate with infrastructure equipment. The following table shows the
frequency bands of eM300-8a module.
Table 1: Frequency Bands of eM300-8a Module
The eM300-8a is designed to support a very large number of connected terminal devices (up to 100,000
per cell), and it supports adaptive modulation coding and spreading schemes to enable a trade-off
between coverage and bit rate.
With an ultra-compact profile of 19.9mm × 23.6mm × 2.2mm, the module can meet almost all the
requirements for IoT applications, including smart metering, security system, industrial PDA, remote
maintenance & control, etc.
eM300-8a is an SMD type module with LCC package, which can be easily embedded into applications. It
provides abundant hardware interfaces such as ADC and UART interfaces.
Designed with power saving technique, the eM300-8a consumes an ultra-low current in PSM (Power
Saving Mode).
The module fully complies with the RoHS directive of the European Union.
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1.
1)
The supply voltage of VDD_EXT should not be greater than that of VBAT.
2.
2)
Within operation temperature range, the module is 3GPP compliant.
3.
3)
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
Feature
Implementation
Power Supply
VBAT supply voltage: 3.1V ~ 4.2V
Typical VBAT supply voltage: 3.6V
VDD_EXT supply voltage: 1.7V ~ 3.6V1)
Typical VDD_EXT supply voltage: 1.8V or 3.0V
Power Saving
Ultra-low sleep current
Temperature Range
Operation temperature range: -30°C ~ +75°C2)
Extended temperature range: -40°C ~ +85°C3)
SWD Interface
SWD port:
Two lines on SWD port interface: SWD_CLK and SWD_DATA
SWD port can be used for firmware upgrading
UART Interfaces
Main port:
Three lines on main port interface
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
Debug port:
Two lines on debug port interface: DBG_TXD and DBG_RXD
Debug port is used for debugging
Only support 57600bps baud rate
Physical Characteristics
Size: 19.9±0.15 × 23.6±0.15 × 2.2±0.2mm
Weight: Approx 1.6g
Firmware Upgrade
Firmware upgrade via SWD port or main port
Antenna Interface
Connected to antenna pad with 50 Ohm impedance control
eLTE-IoT eM300-8a Hardware Design
2.2. Key Features
The following table describes the detailed features of eM300-8a module.
Table 2: eM300-8a Key Features
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their value and exceed the specified tolerances. When the temperature returns to the normal
operating temperature levels, the module will meet 3GPP specifications again.
RF_ANT
Switch
RX_SAW
RF_PA
TX
Filter
VBAT
Load
Switch
APT DCDC
PMU
DCDC
32K
LDO
RF Transceiver
and Analogue
VDD_EXT
TCXO
38.4M
XTAL
Driver
Baseband
RESET
Main UART
Debug UART
Flash
SRAM
SPI
SPI Flash
(Optional)
SWD
NETLIGHT
ADC
GPIO
eLTE-IoT eM300-8a Hardware Design
2.3. Functional Diagram
The following figure shows a block diagram of eM300-8a and illustrates the major functional parts.
Radio frequency
Power management
Peripheral interface
Figure 1: Functional Diagram
2.4. Evaluation Board
In order to help you to develop applications with eM300-8a, Quectel supplies the evaluation board (EVB),
RS-232 to USB cable, power adapter, antenna and other peripherals to control or test the module.
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3 Application Functions
3.1. General Description
eM300-8a is equipped with 54-pin 1.1mm pitch SMT pads plus 40-pin ground pads and reserved pads.
The following chapters provide detailed descriptions of these pins:
Power supply
SWD interface
UART interfaces
ADC interface
GPIO interface
NETLIGHT
RF interface
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