REXENSE REX3P212 Mesh System Solution Expert Instruction Manual

June 10, 2024
REXENSE

REXENSE REX3P212 Mesh System Solution Expert

REXENSE-REX3P212-Mesh-System-Solution-Expert-product

Product Information

Specifications

  • Model: REX3P212 V1.0
  • Compliance: IEEE802.15.4, Zigbee 3.0 standard
  • Main Features:
    • Transparent transmission via UART protocols
    • Customization for specific applications
    • Standard Zigbee 3.0 functionality
    • Applications: Smart home, Industrial Monitoring, Wearable devices, etc.
    • Multiple antenna options
    • Low power consumption:
    • Sleep mode: 7.3uA
    • Receive mode: 11.5mA
    • Transmission mode: 166.0mA @ 20dBm
    • Frequency deviation range:

Product Usage Instructions

Module Interface

  • Packaging Information: Refer to the packaging for details on the contents.
  • Pin Definition: Consult the user manual for the pin definitions.

RF Specification

  • Basic RF Specification: Follow guidelines for basic RF operations.
  • Receiving Specification (RX): Ensure proper setup for receiving data.

Antenna Specification

U.FL connector: Use the U.FL connector for antenna connectivity.

FCC Regulations
Adhere to FCC regulations for proper usage and compliance.

Frequently Asked Questions (FAQ)

  • Q: Can the REX3P212 module be used for smart home applications?
    A: Yes, the REX3P212 module is suitable for smart home applications among other uses.

  • Q: What is the power consumption in different modes?
    A: The REX3P212 module has low power consumption with 7.3uA in sleep mode, 11.5mA in receive mode, and 166.0mA in transmission mode at 20dBm.

Copyright
All information contained in this document is copyrighted by Zhejiang Rexense IoT Technology Co., Ltd. (hereinafter referred to as “Rexense” or “the company”). Without the written permission of the company, the content of this document shall not be disclosed to any third party other than the company’s employees, agents, partners or authorized licensors, and this document shall not be copied or disseminated in any form without authorization. If the user violates the copyright protection agreement, the company has the right to pursue the legal responsibility arising from the user.

Version Updates

V1.0.0 20230614 First Draft
V1.0.1 20230811 Update Antenna Information

Product Introduction

Introduction
REX3P212 is a small, high-sensitivity and low-power Zigbee module.Based on the EFR32MG21A020F1024IM32 chip, it provides a complete, high-performance, low- power and low-cost Zigbee wireless communication system, which complies with the IEEE802.15.4 specification and Zigbee 3.0 standard.
The module has built-in PA, integrated 32-bit ARM Cortex-M33 MCU, Zigbee3.0 wireless communication, 96KB SRAM, 1024KB built-in Flash, 12-bit ADC, PWM and rich GPIO resources.

The REX3P212 module complies with FCC, IC and CE regulations. It can be applied to equipment in many different environments, and complies with RoHS regulations. At the same time, the company also provides a complete set of development and evaluation kits. Users can choose different versions of kits for testing and development according to their own needs.

Application
Rexense REX3P212 module complies with IEEE802.15.4 specification and Zigbee 3.0 standard.

  • Transparent transmission: Users can develop programs according to our UART protocols program.
  • Customization: our company can provide customers with reliable and safe applications according to their specific application programs.
  • Standard Zigbee 3.0 function

Applications of modules include, but are not limited to

  • Smart home
  • Building and Automation Monitoring
  • Inventory management
  • Industrial Monitoring
  • Smart transportation
  • Smartphone and tablet accessories
  • Remote control and 3D glasses
  • Sports and Fitness Tracking
  • Wearable device

Main Features

  • Dimensions: 18.0mm (L)×15.0mm (W)×2.8mm (H)
  • High receiving sensitivity: up to -104.0dBm
  • Reliable and wide communication range: 1000m (PCB antenna, visual distance)
  • Multiple antenna options
  • Very low power consumption
  • Sleep mode: 7.3uA
  • Receive mode: 11.5mA
  • Transmission mode: 166.0mA@20dBm
  • Frequency deviation range: <±10ppm @25℃
  • Abundant storage resources: 1024K bytes Flash; 96K bytes RAM
  • The 20 GPIOs can be configured as multiple functional interfaces according to user needs
  • GPIO
  • External interrupt source
  • 12-bit precision ADC sampling channel
  • USART with hardware flow control
  • SPI/I2C interface
  • PWM output
  • Hardware watchdog

Product Advantage

  • Compact package design, even for small devices.
  • Industry-leading link budget
  • Excellent battery life
  • Abundant storage resources for customer software applications
  • Mesh networking capability
  • Easy-to-use low-cost development kit
  • ISM license-free frequency band

Abbreviations

  • ADC Analog-to -Digital Converter
  • GPIO General Purpose Input/Output
  • HVAC Heating, Ventilating and Air Conditioning
  • TWI Inter-Integrated Circuit
  • IEEE Institute of Electrical and Electronics Engineers
  • ISM Industrial, Scientific and Medical radio band
  • JTAG Digital interface for debugging of embedded device, also known as IEEE 1149.1 standard interface
  • MAC Medium Access Control layer
  • PCB Printed Circuit Board
  • RAM Random Access Memory
  • RF Radio Frequency
  • RTS/CTS Request to Send/ Clear to Send
  • RX Receiver
  • SMA Surface Mount Assembly
  • SPI Serial Peripheral Interface
  • TX Transmitter
  • UART Universal Asynchronous Receiver/Transmitter
  • BLE Bluetooth Low Energy
  • SigMesh Specific Interesting Group Mesh Network Standard

Module Interface

Packaging Information
Dimensions: 18.0mm (L)×15.0mm (W)×2.8mm (H) (with shield) (Dimensional tolerance: length and width ±0.25mm, height ±0.15mm)

REXENSE-REX3P212-Mesh-System-Solution-Expert- \(2\)

Pin Definition

REXENSE-REX3P212-Mesh-System-Solution-Expert- \(3\)

Pin NO.| QFN32 Package pin number| Pin Signal| Direction| Specification
---|---|---|---|---
1| 11| GND| P| GND
2| –| NC| –| –
3| –| NC| –| –
4| –| NC| –| –
5| 15| PB1| I/O| GPIO
6| 16| PB0| I/O| GPIO
7| 17| PA0| I/O| GPIO
8| 20| PA3| I/O| GPIO
9| 21| PA4| I/O| GPIO
10| 28| PD4| I/O| GPIO
11| 29| PD3| I/O| GPIO
12| 30| PD2| I/O| GPIO
13| 31| PD1| I/O| GPIO
14| 32| PD0| I/O| GPIO
15| 9| RESET| I| RESET
16| 22| PA5| I/O| GPIO;TXD
Pin NO.| QFN32 Package pin number| Pin Signal| Direction| Specification
---|---|---|---|---
17| 23| PA6| I/O| GPIO;RXD
18| 18| PA1| I/O| GPIO;SWCLK
19| 19| PA2| I/O| GPIO;SWDIO
20| 1| PC0| I/O| GPIO
21| 2| PC1| I/O| GPIO
22| –| NC| –| –
23| 3| PC2| I/O| GPIO
24| –| NC| –| –
25| 4| PC3| I/O| GPIO
26| 5| PC4| I/O| GPIO
27| 6| PC5| I/O| GPIO
28| 11| GND| P| GND
29| 25,26,27| VCC| P| VCC
30| 25,26,27| VCC| P| VCC
31|  | RF|  |

Technical Specification

Electrical Specification

Parameter Min Max
Module Input Voltage VCC 1.71V 3.8V
Pin Voltage (except ADC pin) -0.3V VCC+0.3V
ADC Pin Voltage 0V VCC
Chip I/O Drive Current Data 50mA

Current Specification

Parameter Average Max Unit
Receiving Current 11.5 11.8 mA
Transmitting Current (@20dBm) 166.0 171.0 mA
Sleeping Current 7.3 μA

Processors Specification

Parameter Value Unit
On-chip Flash Storage Space 1024K bytes
On-chip RAM Storage Space 96K bytes
Working Frequency 38.4 MHz

Module Interface Specification

Parameter Range Unit
UART Max Baud Rate 230400 bps
Resolution of Analog Channels 12 Bits
Analog Reference Voltage VREF VCC V
I2C Bus Maximum Clock Frequency 1000 KHz
GPIO Output Voltage (Logic 0) 0 ~ 0.2*VCC V
GPIO Output Voltage (Logic 1) 0.80*VCC ~ VCC V
Real Time Clock Frequency 32.768 KHz

Physical/Ambient Specification

Parameter Value Note
Physical Size 18.015.02.8mm(with shield)
Weight <1g
**Working Temperature*** -40°C to +105°C(Default)
Working Relative Humidity <95%

RF Specification

Basic RF Specification

Parameter Range Unit
Working Frequency 2400~2483.5 MHz
Number of Frequency Bands 16
Channel Number 0B~1A Hex
Channel Spacing 5 MHz
Rated Input/Output Impedance 50 Ω

Receiving Specification (RX)

Parameter Min Typical Max Unit
Receiving Sensitivity PER 8% -104.0 -103.0
-102.0 dBm

PCB Antenna Specification

U.FLconnector
The REX3P212 is equipped with a 1st generation U.F.L antenna socket for connecting external antennas,using a 2.4G external antenna connection.

FCC Regulations
Important Notice to OEM integrators

  1. This module is limited to OEM installation ONLY.
  2. This module is limited to installation in mobile or fixed applications, according to Part 2.1091(b).
  3. The separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and different antenna configurations
  4. For FCC Part 15.31 (h) and (k): The host manufacturer is responsible for additional testing to verify compliance as a composite system. When testing the host device for compliance with Part 15 Subpart B, the host manufacturer is required to show compliance with Part 15 Subpart B while the transmitter module(s) are installed and operating. The modules should be transmitting and the evaluation should confirm that the module’s intentional emissions are compliant (i.e. fundamental and out of band emissions). The host manufacturer must verify that there are no additional unintentional emissions other than what is permitted in Part 15 Subpart B or emissions are complaint with the transmitter(s) rule(s).
    The Grantee will provide guidance to the host manufacturer for Part 15 B requirements if needed.

Important Note
notice that any deviation(s) from the defined parameters of the antenna trace, as described by the instructions, require that the host product manufacturer must notify to REXENSE that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by the USI, or the host manufacturer can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application.

End Product Labeling
When the module is installed in the host device, the FCC label must be visible through a window on the final device or it must be visible when an access panel, door or cover is easily removed. If not, a second label must be placed on the outside of the final device that contains the following text: “Contains FCC ID: 2AOE2REX3P212”
The FCC ID can be used only when all FCC compliance requirements are met.

Antenna Installation

  1. The antenna must be installed such that 20 cm is maintained between the antenna and users,
  2. The transmitter module may not be co-located with any other transmitter or antenna.
  3. Only antennas of the same type and with equal or less gains as shown below may be used with this module.
    Other types of antennas and/or higher gain antennas may require additional authorization for operation.

Antenna type| 2.4GHz band

Peak Gain (dBi)

---|---
PCB| 1.27

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization.

Manual Information to the End User
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 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 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.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

List of applicable FCC rules
This module has been tested and found to comply with 15.247 requirements for Modular Approval.
The modular transmitter is only FCC authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant, and that the host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

This device is intended only for OEM integrators under the following conditions: (For module device use)

  1. The antenna must be installed such that 20 cm is maintained between the antenna and users, and
  2. The transmitter module may not be co-located with any other transmitter or antenna.

As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.

Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator & your body.

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