wireless-tag WTLRC262-SG Series Wi-Fi BLE LoRaWAN Module Owner’s Manual

: August 6, 2024
: Wireless Tag

Table of Contents

WTLRC262-SG Series Wi-Fi BLE LoRaWAN Module
Product Information
Specifications
Product Usage Instructions
Module Dimension Drawing
Pin Definitions
- Pin Layout
- Pin Description
Peripheral Application Design and Consideration
- FAQ
Where can I find the latest version of the product
What are the frequency bands supported by each model in the

WTLRC262-SG Series Wi-Fi BLE LoRaWAN Module

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Product Information

Specifications

Model: WTLRC262-SG Series

Frequency Bands:

WTLRC262-SG1: BLE 2402-2480MHz, 2.4G WiFi 2412-2472MHz, LoRa
433.175MHz
WTLRC262-SG2: BLE 2402-2480MHz, 2.4G WiFi 2412-2472MHz, LoRa
868MHz
WTLRC262-SG3: BLE 2402-2480MHz, 2.4G WiFi 2412-2462MHz, LoRa
905.3-925.5MHz

Product Usage Instructions

Module Dimension Drawing

Refer to the module dimension drawing for physical dimensions of
the product.

Pin Definitions

Pin Layout

Check the pin layout diagram to understand the physical pin
arrangement of the module.

Pin Description

The module has 15 pins with specific functions as listed
below:

Pin Number	Pin Name	Description
1-8	Various GPIOs and power pins	Detailed descriptions provided in the

manual.
9-15| Antenna related pins| Detailed descriptions provided in the manual.

Peripheral Application Design and Consideration

Ensure the proper design and layout of power supply circuits to
maintain optimal product performance.

FAQ

Where can I find the latest version of the product

datasheet?

You can download the latest version of the datasheet from the
official website of Wireless-Tag Technology Co., Limited.

What are the frequency bands supported by each model in the

WTLRC262-SG Series?

The frequency bands supported by each model are detailed in the
specifications section above.

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WIRELESS-TAG TECHNOLOGY CO., LIMITED

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WTLRC262-SG Series Datasheet

Included: WTLRC262-SG1 WTLRC262-SG2 WTLRC262-SG3

Version V1.0.0 September 08, 2023 Wireless-Tag Technology Co., Limited.
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About this document
This document provides users with datasheets for WTLRC262-SG Series.
Document version
Please download the latest version of the document from Official website.
Revision history
Please find the document revision page to view the revision history.
Disclaimer and Copyright Notice The information in this document, including URLs for reference, is subject to change without notice. this document is provided “as is” without warranty of any kind, including any warranty of merchantability, fitness for a particular purpose, or non-infringement, and any warranty that any proposal, specification, or sample is referred to elsewhere. This document disclaims all liability, including liability for infringement of any patent, arising out of the use of the information in this document. This document does not grant any license, express or implied, by estoppel or otherwise, to use any intellectual property. All trade names, trademarks and registered trademarks mentioned herein are the property of their respective owners and are hereby acknowledged. Copyright © 2022 Enlightenment. All rights reserved.

Clarification
The content of this manual is subject to change due to product version upgrade or other reasons. Wireless-Tag Technology Co., Limited. reserves the right to modify the contents of this manual without any notice or prompting. And makes every effort to provide accurate information in this manual, but Wireless-Tag Technology Co., Limited. does not ensure that the contents of the manual are completely free of errors, and all statements, information and recommendations in this manual do not constitute any express or implied warranty.

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Document Revision Log

Version Variable Number
number state

Change (+/-) description

Author

Dates

1

V1.0.0

C

Create Document

Pail 2023-09-08

*Change status: C – Create, A – Add, M – Modify, D – Delete

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CONTENTS
1 Overview……………………………………………………………………………………………………… …………………..1. 2 Module Dimension Drawing………………………………………………………………………………………………………….2 3 Pin Definition……………………………………………………………………………………………………………………………… 3
3.1 Pin Layout………………………………………………………………………………………………………………………… 3 3.2 Pin Description…………………………………………………………………………………………………………………..4 4 Peripheral Application Design and Consideration…………………………………………………………………………….5 4.1 Power Interface…………………………………………………………………………………………………………………..5
4.1.1 3V3 Design Description…………………………………………………………………………………………….5 4.1.2 Power Supply Design Consideration………………………………………………………………………….. 6 4.2 Control Interface…………………………………………………………………………………………………………………6 4.3 Peripheral Interface……………………………………………………………………………………………………………. 7 4.3.1 Serial Port Interface…………………………………………………………………………………………………..7 4.3.2 Serial Port Schematic Design Consideration………………………………………………………………..7 4.4 RF Design Consideration……………………………………………………………………………………………………. 8

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1 Overview
WTLRC262-SG series module is based on ESP32-C2 and SX1262 chip design, support WIFI, BLE and LoRa communication function, highly integrated design simplifies the user’s product system complexity, and can provide antenna design support according to the customer’s application. Module integrated lora driver, can be extended to support Lorawan protocol, provide driver code to facilitate the secondary development of the user. Module has a small size, low power consumption, long transmission distance, strong anti-interference ability and other characteristics are widely used in smart home, smart industry and other application scenarios.
– 32-bit RISC-V single-core processor up to 120 MHz – On-chip ROM: 576 KB/SRAM: 272 KB – Supports IEEE 802.11 b/g/n protocols – Supports 20 MHz bandwidth in the 2.4 GHz band – Supports 1T1R mode with data rates up to 72.2 Mbps – Simultaneously supports Infrastructure BSS Station mode, SoftAP mode, Station + SoftAP mode, and hybrid mode. -Supports BLE 5.0 – High power mode (20 dBm) – Rate support 125 kbps, 500 kbps, 1 Mbps, 2 Mbps – Wi-Fi and Bluetooth coexist and share the same antenna – Supports LoRa long-distance transmission communication with supported frequency bands:
WTLRC262-SG1BLE:2402-2480MHz; 2.4G WiFi: 2412-2472MHz; LoRa:433.175MHz EIRP:BLE:6.14 dBm; 2.4G WiFi: 18.49 dBm ERP:LoRa:8.813 dBm
WTLRC262-SG2BLE:2402-2480MHz; 2.4G WiFi: 2412-2472MHz; LoRa:868MHz EIRP:BLE:6.48 dBm; 2.4G WiFi: 18.42 dBm ERP:Lora:8.128 dBm
WTLRC262-SG3BLE:2402-2480MHz; 2.4G WiFi: 2412-2462MHz; LoRa:905.3-925.5MHz

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2 Module Dimension Drawing
Figure 1 Module Dimension Drawing

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Unit: mm

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3 Pin Definition
3.1 Pin Layout

Figure 2 Pin Top View

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3.2 Pin Description

The module has a total of 15 pins, refer to Table 1 for specific descriptions.

Pin Number
1 2 3
4 5 6 7 8 9 10 11 12 13 14 15

Table 1 Pin Definitions

Pin Name

descriptive

CHIP_EN GPIO0 GPIO1
GPIO2 GPIO8 GPIO9 U0RXD U0TXD GND
3V3 3V3 2.4G_ANT GND GND LORA_ANT

Enable pin GPIO GPIO
GPIO GPIO GPIO U0RXD, GPIO19 U0TXD, GPIO20 module power ground Module Power Input Module Power Input 2.4G antenna module power ground module power ground LORA antenna

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4 Peripheral Application Design and Consideration

The use of the WTLRC262-SG series modules is required to fulfill the basic operating requirements. This chapter describes how to perform each functional interface circuit design, precautions, and provides a design reference.

4.1 Power Interface

Power supply circuit design and layout, is a very important part of the whole product design, power

supply design good or bad affect the performance of the whole product. Please read the power supply

design requirements carefully and follow the correct power supply design principles to ensure optimal

circuit performance.

Pin Name 3V3 GND

Table 2 Power Interface

Pin Number

Functional Description

10, 11

Module power input

9, 13, 14

Module power supply input ground

note 3.0-3.6V (Default: 3.3V, input current >500mA) Make sure all ground pins are well grounded

4.1.1 3V3 Design Description

Power Supply Design
The WTLRC262-SG series power supply power supply supports 3.0-3.6V power input. The power supply recommended design suggestions are shown in Figure 3;

Figure 3 Recommended Power Supply Design

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4.1.2 Power Supply Design Consideration

It is recommended that magnetic beads be placed on the power input to filter out power supply high frequency noise. Module power supply maximum input voltage 3.6V, typical value is 3.3V; VCC recommended alignment width 1mm or more. It is recommended to increase the ESD tube at the module power supply, ESD clamp operating voltage VRWM = 5V, need to be placed close to the power input interface to ensure that the power supply surge voltage into the back- end circuits before that is clamped, to protect the back-end devices and modules; C1 can choose 10uF aluminum electrolytic capacitor or ceramic capacitor, can improve the power supply instantaneous high-current current capacity, capacitance withstand voltage value should be greater than the input power supply voltage of more than 1.5 times; Place low ESREquivalent series resistance bypass capacitors C2 and C3 near the module position to filter out high frequency interference in the power supply;

4.2 Control Interface

Pin Name GPIO9
CHIP_EN

Table 3 Control Interfaces

Pin Number

Functional Description

note

Default pull-up,

provides a pull-down

6

GPIO (BOOT pin)

when burning, after

burning, IO9 needs to be

switched back to pull-up

1

Reset Input Pin

Active Low

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4.3 Peripheral Interface
Module provides a variety of commonly used peripheral interfaces
4.3.1 Serial Port interface

Table 4 Serial Port Interface

Pin Name
U0RXD U0TXD

Functional

note

Number

Description

7

serial port reception

8

serial port sending

The module can realize the functions of program download, data communication and debugging through the serial port. Customers can choose to use it according to their needs. The recommended serial port connection circuit is shown in Figure 4. It is recommended to reserve pull-up resistors (R11, R12) to prevent the chip from insufficient drive capability for serial communication, and it is recommended to connect a 100 ohm current limiting resistor in series with the RXD and TXD signal lines to prevent pulse current and burn the chip.
Figure 4 Serial Port Connection Reference Design

4.3.2 Serial Port Schematic Design Consideration

Note the correspondence of the signal flow to the connection. Module serial port level is 3.3V, if the UART and MCU logic level does not match, you need to do
level conversion

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4.4 RF Design Consideration
The WTLRC262-SG series modules require an external antenna for use. The antenna has two wiring methods: compatible with half-hole pads and IPEX seats, and a standard IPEX seats connector is left on the module. The dimensions of the IPEX seats are shown below:
Fig. 5 Dimensional drawing of IPEX seat

FCC Warning

This device complies with part 15 of the FCC Rules. Operation is subject to the following tw

o conditions:(1) This device may not cause harmful interference, and (2) this device must accept a

ny interference received, including interference that may cause undesired operation.

Any Changes or modifications not expressly approved by the party responsible for compliance

could void the user’s authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital de

vice, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protec

tion against harmful interference in a residential installation. This equipment generates uses and ca

n 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 inte

rference will not occur in a particular installation. If this equipment does cause harmful interferenc

e to radio or television reception, which can be determined by turning the equipment off and on, t

he 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.

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

IMPORTANT NOTES
Co-locating warning: This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
OEM integration instructions: This device is intended only for OEM integrators under the under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the external antenna(s) that has been originally tested and certified with this module.
As long as the 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 (for example, digital device emissions, PC peripheral requirements, etc.).

Validity of using the module certification:
In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module 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.

End product labeling: The final end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2AFOS-WTLRC262-SG3”.
Information that must be placed in the end user manual:
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.

Integration instructions for host product manufactures according to KDB 996369 D03 OEM Manual v01

2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247

2.3 Specific operational use conditions The module is a Bluetooth module with 2.4G WiFi & BLE & LoRa function.

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BLE Specification Operation Frequency: 2402~2480MHz Number of Channel: 40 Modulation: GFSK Type:FPC Antenna Gain: 5 dBi
WiFi Specification Operation Frequency: 2412~2462MHz(only for FCC ID) Number of Channel: 11(only for FCC ID) Modulation: DSSS,OFDM Type: FPC Antenna Gain: 5 dBi
LoRa Specification Operation Frequency: 905.3~925.5MHz (only for FCC ID) Number of Channel: 3 (only for FCC ID) Modulation: GFSK Type: FPC Antenna Gain: 3.3 dBi

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The module can be used for mobile or applications with a maximum antenna. The host manufacturer installing this module into their product must ensure that the final composit product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operaition. The host manufacturer 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.

2.4 Limited module procedures Not applicable.

2.5 Trace antenna designs
Not applicable. The module has its own antenna, and doesn’t need a host’s printed board microstrip trace antenna etc.

2.6 RF exposure considerations
The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and users’ body; and if RF exposure statement or module layout is changed, then the host
product manufacturer required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the
host manufacturer will be responsible for re-evaluating the end product (including the transmitter) and

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obtaining a separate FCC authorization.

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2.7 Antennas This device is intended only for host manufacturers under the following conditions: The transmitter module may not be co-located with any other transmitter or antenna; The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employ a `unique’ antenna coupler. As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc. Antenna Specification are as follows: BLE Type:FPC Antenna Gain: 5 dBi Model: WF4212-IPEX 1-10cm Manufacturer: Dongguan Chuangjie Electronics Co.,LTD
WiFi Type: FPC Antenna Gain: 5 dBi Model: WF4212-IPEX 1-10cm Manufacturer: Dongguan Chuangjie Electronics Co.,LTD
LoRa Type: FPC Antenna Gain: 3.3 dBi Model: NB058-113B-125IX Manufacturer: Dongguan Chuangjie Electronics Co.,LTD

2.8 Label and compliance information Host product manufacturers need to provide a physical or e-label stating “Contains Transmitter Module FCC ID: 2AFOS-WTLRC262-SG3” with their finished product.

2.9 Information on test modes and additional testing requirements BLE Operation Frequency: 2402~2480MHz Number of Channel: 40 Modulation: GFSK

WIFI Operation Frequency: 2412~2462MHz Number of Channel: 11 Modulation: DSSS, OFDM

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LoRa Specification Operation Frequency: 905.3~925.5MHz Number of Channel: 3 Modulation: GFSK

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Host manufacturer must perfom test of radiated & conducted emission and spurious emission, etc according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally.
2.10 Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247 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.
EU: This device in compliance with the essential requirements and other relevant provisions of Directive 2014/ 53/EU. All essential radio test suites have been carried out. This restriction will be applied to all Member States of European Union. The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
Declaration of Conformity Hereby, Wireless-Tag Technology Co., Limited. declares that the product type compliance with Directives 2014/53/EU & 2011/65/EU. The full text of the EU declaration of conformity is available at the following internet address:https:// www.wireless-tag.com.

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