1. Введение
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.
Figure 1: Waveshare PL2303 USB to UART (TTL) Communication Module
Основные характеристики:
- 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. Настройка и установка
2.1 Установка драйвера
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 webСайт для загрузки последних версий драйверов.
2.2 Подключение оборудования
The module provides standard UART pins for connection to your target device. Proper connection of these pins is crucial for successful communication.
Figure 2: Hardware Connection Diagram with MCU
- VCCIO: Power output for the target device. Selectable via jumper.
- Земля: 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.
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. Операция
3.1 светодиодных индикатора
The module includes three LED indicators to provide visual feedback on its operating status:
- PWR (мощность): Illuminates when the module is powered on.
- TXD (передача данных): Flashes when data is being transmitted from the module to the target device.
- RXD (Приём данных): Flashes when data is being received by the module from the target device.
3.2 Передача данных
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. Технические характеристики
Figure 4: Outline Dimensions of the Module
| Особенность | Деталь |
|---|---|
| Номер модели товара | PL2303 USB UART Board (Type C) |
| Тип чипсета | PL2303GS |
| Совместимые устройства | Малиновый Пи |
| Поддерживаемые платформы | 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) |
| Светодиодные индикаторы | TXD, RXD, PWR |
| Тип разъема | USB-C |
| Вес товара | 0.32 унции |
| Размеры упаковки | 2.7 x 1.9 x 0.8 дюйма |
5 Поддержка и ресурсы
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.
Figure 5: PL2303 USB-C to UART Module Overview
Waveshare typically provides comprehensive resources including:
- Руководства пользователя
- Электрические схемы
- Exampкод
- Ресурсы разработки
- Профессиональная техническая поддержка
Please visit the official Waveshare website or the product's wiki page for the most up-to-date resources and support information.
