Manual do usuario do módulo de comunicación USB a UART (TTL) Waveshare PL2303

1. Introdución

The Waveshare PL2303 USB to UART (TTL) Communication Module is designed for reliable serial communication between a computer and various embedded systems or microcontrollers. It features a USB-C connector for modern connectivity and supports multiple logic levels (1.8V, 2.5V, 3.3V, 5V), making it versatile for different applications. This module adopts the PL2303GS new version device for enhanced performance.

Waveshare PL2303 USB to UART (TTL) Communication Module with USB-C connector and included jumper wires

Figure 1: Waveshare PL2303 USB to UART (TTL) Communication Module

Características principais:

Adopts PL2303GS new version device.
Supports Windows XP/7/8/10/11 and other operating systems.
Features 3x LED indicators: TXD (Transmit Data), RXD (Receive Data), and PWR (Power).
Offers 3x VCCIO power modes via jumper setting: VCCIO - 5V (5V output), VCCIO - 3.3V (3.3V output).
Option to open the jumper for power from the target board (1.8V/2.5V/3.3V/5V).

2. Configuración e instalación

2.1 Instalación do controlador

Before connecting the module, ensure the necessary drivers for the PL2303GS chip are installed on your operating system. Drivers are typically available for Windows XP, 7, 8, 10, and 11. Refer to the Waveshare product page or the PL2303 manufacturer's website for the latest driver downloads.

2.2 Conexión de hardware

The module provides standard UART pins for connection to your target device. Proper connection of these pins is crucial for successful communication.

Diagram showing the PL2303 USB UART Board connected to an MCU, illustrating RXD to TXD, TXD to RXD, and GND to GND connections.

Figure 2: Hardware Connection Diagram with MCU

VCCIO: Power output for the target device. Selectable via jumper.
GND: Ground connection. Connect to the ground of your target device.
TXD: Transmit Data. Connect to the RXD (Receive Data) pin of your target device.
RXD: Receive Data. Connect to the TXD (Transmit Data) pin of your target device.

CAUTION: The module is compatible with TTL level only. To avoid any damage, please DO NOT direct connect it to RS232 circuit.

2.3 Logic Level Selection

The module supports various logic levels for compatibility with different microcontrollers. The VCCIO voltage can be configured using the onboard jumper.

Primeiro plano view of the Waveshare PL2303 USB UART Board showing the VCCIO jumper for 3.3V and 5V selection.

Figure 3: VCCIO Jumper for Logic Level Selection

VCCIO - 5V: Set the jumper to the 5V position for 5V output.
VCCIO - 3.3V: Set the jumper to the 3.3V position for 3.3V output.
Open Jumper: If the jumper is removed, the module will be powered from the target board, supporting 1.8V/2.5V/3.3V/5V logic levels.

3. Funcionamento

3.1 Indicadores LED

The module includes three LED indicators to provide visual feedback on its operating status:

PWR (potencia): Illuminates when the module is powered on.
TXD (Transmisión de datos): Flashes when data is being transmitted from the module to the target device.
RXD (Receive Data): Flashes when data is being received by the module from the target device.

3.2 Transmisión de datos

Once connected and drivers are installed, you can use a serial terminal program on your computer to communicate with your target device. Ensure the baud rate, data bits, parity, and stop bits are correctly configured in your serial utility to match your target device's settings.

Video 1: Demonstration of USB to TTL Converter bidirectional communication. This video illustrates connecting two converter modules and using a serial port utility for data transmission, showing how to configure COM ports and send/receive data.

4. Especificacións técnicas

Diagram showing the outline dimensions of the PL2303 USB UART Board in millimeters.

Figure 4: Outline Dimensions of the Module

Característica	Detalle
Número de modelo do artigo	PL2303 USB UART Board (Type C)
Tipo de chipset	PL2303GS
Dispositivos compatibles	Raspberry Pi
Plataformas compatibles	Windows XP/7/8/10/11
VCCIO Power Modes	5V, 3.3V (via jumper); 1.8V/2.5V/3.3V/5V (powered from target board)
Indicadores LED	TXD, RXD, PWR
Tipo de conector	USB-C
Peso do elemento	0.32 onzas
Dimensións do paquete	2.7 x 1.9 x 0.8 polgadas

5. Soporte e Recursos

For additional information, technical support, and resources related to the Waveshare PL2303 USB to UART (TTL) Communication Module, please refer to the official Waveshare documentation and support channels.

Waveshare PL2303 USB-C to UART Module overview imaxe.

Figure 5: PL2303 USB-C to UART Module Overview

Waveshare typically provides comprehensive resources including:

Manuais de usuario
Diagramas de circuítos
Exampo Código
Recursos para o desenvolvemento
Professional Technical Support

Please visit the official Waveshare website or the product's wiki page for the most up-to-date resources and support information.

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Waveshare PL2303 USB UART Board (Type C)