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802.15.4/Zigbee Module Datasheet REX3B V2.0.3
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Contents 1. Product Description .................................................................................................................................................... - 2 -
1.1 Product Introduction ....................................................................................................................................... - 2 -
1.2 Product Applications ....................................................................................................................................... - 2 -
1.3 Main Features ..................................................................................................................................................... - 4 -
1.4 Product Advantages......................................................................................................................................... - 4 -
1.5 Name Abbreviations ........................................................................................................................................ - 5 -
1.6 Related Documents .......................................................................................................................................... - 5 -
2. Product Description .................................................................................................................................................... - 6 -
2.1 Description ........................................................................................................................................................... - 6 -
3. Technical Specif ications ............................................................................................................................................. - 7 -
3.1. Electrical Character .......................................................................................................................................... - 7 -
3.2. Physical/Environmental Character............................................................................................................ - 9 -
3.3. Pin Configuration ............................................................................................................................................. - 9 -
3.4 Antenna Specification ................................................................................................................................... - 12 -
3.5. RF Performance Test Results ..................................................................................................................... - 16 -
4. Ordering Information .................................................................................................Error! Bookmark not defined. 5. Contact Us ..................................................................................................................................................................... - 19 -
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1. Product Description 1.1 Product Introduction REX3B is a small, high-sensitivity low-power Zig Bee module.Based on the latest EFR32 platform fro m Silabs, the module complies with the IEEE 802.15.4 specification and the ZigBee 3.0 protocol standard. It has been widely used in smart home, build ing automation, industrial monitoring an d other fields.Using this module saves a lot of time effort and cost for the user's development. 1.2 Product Applications The REX3B module complies with the IEEE 802.15.4 specification and the ZigBee 3.0 protocol standard, supports self-healing, self-organizing mesh networks, optimizes network traffic, and reduces power consumption. This module supports the following application configurations:
Standard ZigBee 3.0 features Transparent transmission: Users can perform program development according to our AT command procedure Customization: Reliable and safe customized applications based on customers specific requirements Module applications include but are not limited to:
Smart Home Lighting Control Security System Air Quality Testing Door Lock Electric curtains Air Conditioning, Floor Heating, Fresh Air Control Scene Automation Building Automation and Monitoring
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HVAC monitoring and control Inventory Management Smart Agriculture Industrial Monitoring Smart Traffic Automatical Meter Reading FCC ID: 2AOE23BV3 Host labeling requirement: Contains FCC ID2AOE23BV3 The single-modular transmitter is a self-contained, physically delineated, component for which compliance can be demonstrated independent of the host operating conditions, and which complies with all eight requirements. 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 interferenc e that may cause undesired operation. Please note that changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment. Note: This equipment 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 radiate 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. This equipment complies with radio frequency exposure limits set forth by the FCC for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the device and the user or bystanders. This device must not be co-located or operating in conjunction with any other antenna or transmitter.
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1.3 Main Features Dimension20.4*14.8*1.8mm Output Power: Up to 19.5dBm High receiver sensitivity: up to -100dBm Excellent link budget: up to 119.5dBm Reliable communication range: 2000m (view of sight distance) A variety of antenna options Extremely low power consumption Sleep Mode: <2.8A Receive Mode: 12mA Launch Mode107mA@19dBm Rich storage resources:
256K byte Flash32K byte RAM 15 GPIOs can be configured for various functional interfaces according to user needs GPIO External interrupt source TWI Interface SPI/I2C Interface 12-bit precision ADC sampling channel PWM Output USART with Hardware Flow Control Hardware watchdog 1.4 Product Advantages Small footprint can be used in very small devices. Industry-leading link budget Excellent battery life Rich storage resources for customer software applications Mesh networking capability Easy-to-use, low-cost development kit ISM license-free band
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1.5 Name Abbreviations ADC Analog-to -Digital Converter GPIO General Purpose Input/Output HVAC Heating, Ventilating and Air Conditioning TWI IEEE ISM JTAG MAC PCB RAM RF Inter-Integrated Circuit Institute of Electrical and Electronics Engineers Industrial, Scientific and Medical radio band Digital interface for debugging of embedded device, also known as IEEE 1149.1 standard interface Medium Access Control layer Printed Circuit Board Random Access Memory Radio Frequency RTS/CTS Request to Send/ Clear to Send RX SMA SPI TX Receiver Surface Mount Assembly Serial Peripheral Interface Transmitter UART Universal Asynchronous Receiver/Transmitter ZigBeePRO Wireless networking standards targeted at low-power applications 1.6 Related Documents
[1] ZigBee 3.0 The Open, Global Standard for the Internet of Things December 2, 2014
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2. Product Description 2.1 Description REX3B is a compact, high-sensitivity low-power ZigBee module that complies with the IEEE 802.15.4 specification and the ZigBee 3.0 protocol standard. Based on the latest EFR32 platform from US Silabs, it has extremely excellent RF performance, extremely low power consumption, powerful processor and abundant on-chip resources, and it is very easy for user integration. Figure 2-1. Chart XTAL (Crystal Frequency 38.4MHz) Cortex M4 Core Pow er Management O-QPSK Modem Data RA M Pr ogram Flash 32kB 256kB Internal Oscillators ARM CORTEX- M4 IEEE802.15.4 CPU w ith NVIC and MA C MPU Accelerator 2.4GHz Radio Encryption Accelerator Antenna Matching Netw ork SPI TWI Timers UART GPIO registers The REX3B module complies with the FCC, IC, and CE specifications and can be used in a variety of devices in different environments. Moreover, the module is RoHS compliant.
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3. Technical Specifications 3.1. Electrical Character 3.1.1. Electrical Character Table 3-1. Absolute maximum rated parameter Parameter Module supply voltage rangeVCC Pin Operating Voltage Range (Except ADC Pin) ADC pin operating voltage range All I/O maximum drive current data of the chip The maximum received RF signal strength of the chip Min. 1.85V
-0.3V
-0.3V Max. 3.8V VDD_PADS+0.3 2.1V 50 mA
+10 dBm Note: Exceeding the absolute maximum rating may damage the module. In no case can the user violate the absolute maximum ratings listed in the table above. Any violation may cause irreparable damage to the module. 3.1.2. Test Condition Table 3-2. Test Condition ( Unless seperately agreement ), VCC = 3.3V, Temp. = 25C Parameter Range Unit Receive Current Emission Current@19dBm Sleep Current Transmit Power Receiver Sensitivity90%
12 107 2.8
-9 to +19.5
-98 to -100 mA mA A dBm dBm
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3.1.3. Radio Frequency Character Table 3-3. RF Character Parameter Test Condition Range Unit Working Frequency Bands Number Channel Number Channel Spacing Transmit Power Receiver Sensitivity90%
Max. Transmission Rate Rated Input/Output Impedance For unbalanced output 50 3.1.4. Processor Features Table 3-4.Processor Features 2400~2483.5 MHz 16 0B~1A 5
-9 to +19.5
-98 to -100 250 Hex MHz dBm dBm kbps Parameter Test Condition Range On-chip Flash memory On-chip RAM memory Work Frequency 256K 32K 38.4 Unit bytes bytes MHz 3.1.5. Module Interface Features Table 3-5. Module Interface Features Parameter Test Condition Range UART maximum baud rate Analog channel resolution/conversion time Half duplex mode Analog input impedance Analog reference voltageVREF Analog input voltage I2C Bus maximum clock frequency GPIO output voltage (logic 0) GPIO output voltage (logic 1) Real-time clock frequency
-8/ 4 mA
-8/ 4 mA 0 ~ 0.18*VCC 0.82*VCC ~ VCC 32.768 230400 12/4096
>1 1.2 0 - VREF 400 Unit bps Bits/s M V V KHz V V KHz
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3.2. Physical/Environmental Character Table 3-6. Physical/Environmental Character Parameter Value Note Dimension Weight 20.4*14.8*1.8mm
<1g Working Temperature
-40C to +85Cdefault
-40C to +115CIndustrial grade Relative Humidity
<95%
3.3. Pin Configuration Figure 3-7. Appearance Size Diagram
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Figure 3-8.Product Package Figure 3-9. Pin Configuration
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Table 3-10. Pin Description Module pin number QFN32P ackage pin number Pin Signal Direction Pin Description 23 PB14 I/O GPIO 24 17 18 5,22,28, 30 3 9,10, 25 19 PB15 PA0 PA1 3.3V PF2 GND PB11 I/O I/O I/O GPIO GPIO;TXD GPIO;RXD I VCC I/O GPIO I GND I/O GPIO 20 PB12 I/O GPIO 21 PB13 I/O GPIO 16 PD15 I/O GPIO;PTA_REQUEST 15 PD14 I/O GPIO;PTA_GRANT 14 PD13 I/O GPIO;PTA_PRIORITY 32 PC11 I/O GPIO 1 4 2 9,10, 25 8 PF0 PF3 PF1 GND RESET IO GPIO; SWCLK IO IO I I GPIO GPIO; SWDIO GND RESET 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
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3.4 Antenna Specification Multiple antenna interfaces have been integrated on the REX3B module. As shown below 3.4.1 PCB Antenna Figure 4-1. PCB Antenna PCB Antenna When using the PCB antenna output, note the following points:
1. Avoid placing the module inside a metal enclosure. 2. Avoid placing metal objects close to the PCB antenna (at least 1cm away, it is recommended to be 2.7cm or more). 3. Do not place the module next to devices emitting electromagnetic radiation, such as transformers. The user circuit board should be designed to prevent its components, traces, or floors from interfering with the PCB antenna of the wireless module. The basic principle is:
Do not trace, lay or place other components around the PCB antenna PCBThe PCB antenna preferably protrudes from the PCB board Do not use metal housing around PCB antenna Figure 4-2. PCB layout diagram for module antenna position selection Can place components, route, copper Can not place components, can not be wired, can not be copper. It is best to hollow
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3.4.3 PCB antenna gain Figure 4-4 Product picture Figure 4-5 Return Loss
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Figure 4-6 VSWR Figure 4-7 3D gain pattern Peak Gain(dBi) The peak gain 1.78
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Figure 4-8 E ,h plan
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3.5. RF Performance Test Results Figure 5-1. Receiver Sensitivity Figure 5-2. Carrier Signal Test Figure 5-3. Modulation Signal Test
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RE X 3 B 012 B
- V4 B1
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4. Manufacturer REX=REXENSE Series 3=Zigbee Packaging Type M=MINI zigbee B = Module for Smart Light(default) P =EFR32 Ultra-small Module 011= EFR32MG1B232F256 012= EFR32MG1B232F256 136= EFR32MG13P632F512 137= EFR32MG13P732F512 B=PCB IPEX No IPEX Basement(Default) U=U.FL Interface L=PCB , IPEX IPEX Antenna with Antenna V4= V4 B1= Black Ink with Shielding Case B= Represents Black Ink G= Represents Green Ink 1= With Shielding Case 0= Without Shielding Case
= 85 Blank=Normal 85Default
= =Industrial Application(Version for Hi-temp
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5. Contact Us Zhejiang Raying IoT Technology Co., Ltd. Add: 10F,North of Building No.10,Wellong Science & Technology Park, No.88 Jiangling Road,Binjiang District,Hangzhou,310051 China T: +86-571-85395623 F: +86-571-87987620 Email: intl@rexense.com Web: www.rexense.com