REXENSE REX3PT581 Mesh System Solution Expert Instruction Manual

REXENSE REX3PT581 Mesh System Solution Expert

INSTRUCTION MANUAL

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 20230630 First Draft

1. Product Introduction

1.1.Introduction

REX3PT581 is a small, high-sensitivity and low-power Zigbee module.Based on the RT51 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 RISC MCU, Zigbee3.0 wireless communication, 64KB SRAM, 1024KB built-in Flash, 14-bit ADC, 6-channel PWM, an orthogonal decoder (QDEC) and rich GPIO resources.
The REX3PT581 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.

1.2.Application

Rexense REX3PT581 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

1.3.Main Features

• Dimensions: 18.0mm (L)×15.0mm (W)×2.8mm (H) (with shield)

• High receiving sensitivity: up to -103.5dBm

• Reliable and wide communication range: 1000m (PCB antenna, visual distance)

• Multiple antenna options

• Very low power consumption
   Sleep mode: 2.9uA
   Receive mode: 14.9mA
   Transmission mode: 145mA@20dBm

• Frequency deviation range: ±10ppm @25℃

• Abundant storage resources: 1024K bytes Flash; 64K bytes RAM

• The 14 GPIOs can be configured as multiple functional interfaces according to user needs
   GPIO
   External interrupt source
   14-bit precision ADC sampling channel
   USART with hardware flow control
   SPI/I2C interface
   PWM output
   Hardware watchdog

1.4.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

1.5.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

2. Module Interface

2.1.Packaging Information

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

2.2.Pin Definition

Dorsal view left top to bottom
1| GND| GND
2| PD2| GPIO;PWM3;SPI_CS
3| PD3| GPIO;PWM1_N
4| PD4| GPIO;PWM2_N
5| PD7| GPIO;SPI_CLK;I2C_SCK
6| PA0| GPIO;PWM0_N
7| PA1| GPIO
8| NC| /
9| NC| /
10| NC| /
11| NC| /
Back View Bottom Left to Right
12| NC| /
13| NC| /
14| PB5| GPIO;PWM5;ADC
15| RESET| RESET
16| PB1-TXD| TXD
17| PC3-RXD| RXD
18| PB6| GPIO;ADC;SPI_MISO;I2C_SDA

Dorsal view right side from bottom to top
20| PC0| GPIO;PWM4_N;I2C_SDA
21| PC1| GPIO;PWM0;PWM1_N;I2C_SCK
22| PC2| GPIO;PWM0;I2C_SDA
23| NC| /
24| PB7| GPIO;ADC;SPI_MOSI
25| NC| /
26| NC| /
27| NC| /
28| GND| GND
29| VCC| VCC
30| VCC| VCC
Back view top
31| RF| RF pin

3. Technical Specification

3.1.Electrical Specification

Remark: PB1 support drive strength up to 8mA (8mA when “DS”=1, 4mA when “DS”=0); PB<5:7> support drive strength up to 16mA (16mA when “DS”=1, 12mA when “DS”=0); other GPIOs (PA<0:1>, PC<0:3> and PD<2:4,7>) support drive strength up to 4mA (4mA when “DS”=1, 2mA when “DS”=0).

3.2.Current Specification

3.3.Processors Specification

3.4.Module Interface Specification

Analog      Input      Voltage(1/8divider     ，
Single-ended mode)| | 0-9.6V| V
Analog      Input      Voltage(1/1divider     ，
Single-ended mode)| | 0-1.2V| V
I2C Bus Maximum Clock Frequency| | 400| KHz
GPIO Output Voltage (Logic 0)| -8 / 4 mA| 0 ~ 0.2VDD| V
GPIO Output Voltage (Logic 1)| -8 / 4 mA| 0.80VDD ~ VDD| V
Real Time Clock Frequency| | 32.768| KHz

3.5.Physical/Ambient Specification

4. RF Specification

4.1.Basic RF Specification

4.2.Receiving Specification (RX)

5. PCB Antenna Specification

5.1.U.FLconnector

The REX3PT581 is equipped with a 1st generation U.F.L antenna socket for connecting external antennas.

Specifications

• Model: REX3PT581 V1.0
• Chip: RT51
• Wireless Standard: Zigbee 3.0
• Wireless Communication: IEEE802.15.4
• Memory: 64KB SRAM, 1024KB Flash
• ADC: 14-bit
• GPIO: Yes
• Interfaces: USART, SPI/I2C, PWM
• Regulations Compliance: FCC, IC, CE, RoHS

6. 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 re-moved. If not, a second label must be placed on the outside of the final device that contains the following text: “Contains FCC ID: 2AOE2REX3P581”

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

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual.

Federal Communication Commission Interference Statement

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.

WEB：www.rexense.cn

FAQ

Q: What are the main features of the REX3PT581 module?

A: The main features include GPIO support, external interrupt source capabilities, 14-bit precision ADC sampling channel, USART with hardware flow control, SPI/I2C interface, PWM output, and hardware watchdog.

Q: What are the typical applications of the REX3PT581 module?

A: The module can be used in smart home systems, industrial monitoring, wearable devices, smart transportation solutions, and more.

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