Leedarson La02301 Wi-fi And Bluetooth Smart Combo Module User Manual

LEEDARSON LA02301 WI-FI and Bluetooth SMART Combo Module User Manual

Introduction

Overview

The LA02301 is a Leedarson-developed universal Wi-Fi and Bluetooth SMART (BLE) combo module. It uses the Espress if Inc. ESP32-U4WDH System in Package that integrates an embedded 4MB flash.

Figure 1.1. LA02301 Module

The LA02301 module is designed for a variety of IOT products such as Power Drivers, Sensors, Plugs, Lighting, Switches, etc.

• Plug
  
• Switch
  
• Sensor
  
• Down Light
  
• Power Driver
  
  Figure 1.2. Product Application

Key features

• Embedded Xtensa® 32-bit LX6 microprocessor, with clock up to 160MHz
• Data Memory: 520KB internal SRAM and 448KB internal ROM,4MB Flash
• Power supply voltage: 3.0V 3.6V
• Operating temperature: -40 105 Deg-C
• Frequency of crystal oscillator: 40MHz\32.768KHz
• Operating frequency: 2400 2483.5MHz
• Support WIFI 802.11b/g/n up to 150Mbps Compliant with Bluetooth LE specifications Wi-Fi 802.11 b/g/n and BLE can’t transmission simultaneous
• Interface:
  • Vertical Mount (Plug-In)
    • 5 PWMs (GPlOs)
    • 2 GPlOs
    • 1 Available UART
    • 1 ADC
    • 1 Dedicated Triac Dimmer Detection Pin
  • Horizontal (SMD)
  • 5 PWMs (GPlOs)
    • 4 GPlOs
    • 1 Available UART
    • 1 ADC
    • 1 Dedicated Triac Dimmer Detection Pin

Block Diagram

The LA02301 module is a highly-integrated, high-performance system with all the hardware components needed to enable 2.4GHz wireless connectivity and support Wi-Fi and BLE protocols.

Built around the ESP32-U4WDH Wireless SoC, the LA02301 includes a built-in PCB trace antenna, supply decoupling and filtering components, a 40MHz reference crystal, a 32.768 KHz crystal, and an RF shield. A general block diagram of the module is shown as below.

Figure1.3, LA02301 Block Diagram

Power Supply

The LA02301 requires a single nominal supply level of 3.3V. All the necessary decoupling and filtering components are included in the module. The supply voltage noise tolerance of the module should be less than 100mVpp and the supply current should be more than SOOmA.

Module Certification Information

Table 1.1. Module Certification Information

Electrical characteristics

Absolute maximum ratings

Stresses above those listed below may cause permanent damage to the device. This is a stress rating only and functional operation of the devices at those or any conditions above those indicated in the operation listing of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Table 2.1. Absolute maximum ratings

General Operating Conditions

This table specifies the general operating temperature range and supply voltage range for all supplies, the minimum and maximum values of all other tables are specified over this operating range, unless otherwise noted.

Table 2.2. General Operating Conditions

DC Specifications

Unless otherwise indicated, typical conditions are: VCC=3.3V.TA=25 Deg-C.

Table 2.3. DC Specifications

RF Specifications

Unless otherwise indicated, typical conditions are: VCC=3.3V TA=25 Deg-C,

Table 2.4. Wi-Fi Specifications

Table 2.5 BLE Specifications

Pin Definition

Figure 3.1. Vertical Mount (Plug-In)

Table 3.1. Plug-In pin definition

Note: 1. AC_TRIAC_DETECT is used to detect if a device is powered through a triac dimmer and to determine the dimmer settings. The circuit that feeds this signal should give a scaled DC voltage representation of the average AC voltage integrated over approximately 200ms. If the triac is set to chop the AC waveform 50%, the AC_TRIAC_DETECT signal should be at 50% of VCC.If the triac dimmer is turned up completely, the AC waveform will be minimally chopped and the AC_TRIAC_DETECT signal should be at 100% of VCC.

Figure 3.2. Horizontal (SMD)

Table 3.2. SMD pin definition

Package Specifications

Dimension

Figure 4.1. Module Dimensions (Unit: mm)

PCB Pads Information

Perspective view

Figure 4.2. Pad Size (Unit: mm)

Note:

1. Shaded part is Antenna Trace.
2. The sizes of pads on the component side are the same to the opposite side.

Plug-in Land pattern example

Figure 4.3. Plug-in PCB Land Pattern (Unit: mm)

Note:
Please see below lay-out:

Figure 4.4. Plug-in PCB Land Pattern (Unit: mm)

SMD Land pattern example

Figure 4.5. SMD PCB Land Pattern (Unit: mm)

Note:
Shaded part is Antenna Trace.

Soldering Recommendations

Refer to below information for SMT temperature settings. Note that the number of times of reflow should not above 2 times.

Table 5.1. SMT temperature setting

Figure 5.1. SMT temperature setting curve

Declaration

FCC 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. (2) This device must accept any interference received, including interference that may cause undesired operation.
15.21
Note: The grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. Such modifications could void the user’s authority to operate the equipment.
15.105(b)
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

RF 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 of 20 cm between the radiator and your body.

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two Condition.

1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.

Host labeling requirement:”Contains transmitter module
FCC ID: 2AB2Q-LA02301″ and IC: 10256A-LA02301