PL2303GS USB Type C转RS232桥接控制器

USBTypeC

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"USB Type C to RS232 转换器基于PL2303GS芯片，包括PCB布局、电路原理图和Gerber文件。" 本文将详细介绍USB Type C转RS232接口的技术特点以及核心元件PL2303GS的功能和优势。 USB Type C to RS232转换器是一种设备，用于将现代USB Type C接口转换为传统的串行通信接口RS232。这种转换器广泛应用于需要与老式设备或系统进行通信的场景，如工业自动化、远程控制或数据传输。PL2303GS芯片是实现这种转换的关键部件，它是由Prolific Technology Inc.设计和制造的单片USB到异步串行数据接口集成电路。 PL2303GS特性与功能： 1. 兼容性：完全符合USB 2.0规范（全速模式），并能与UHCI/OHCI（USB 1.1）、EHCI（USB 2.0）和xHCI（USB 3.1）主机控制器兼容，确保在不同速度的USB设备上都能正常工作。 2. 驱动支持：提供免费的USB到虚拟COM端口（VCP）驱动程序，支持Windows、Mac、Linux和Android操作系统，方便用户在各种平台上进行设备的配置和使用。 3. 高集成度：集成USB 1.1 FSTransceiver（全速传输接收器），内置终端电阻和上拉电阻，减少了外部PCB组件的需求，简化了硬件设计。 4. OTP ROM：支持256字节的OTP ROM（一次编程只读存储器），用于存储USB设备描述符和GPIO自定义配置。OTP ROM可通过USB端口直接编程，方便设备定制和更新。 5. 唯一ID：每个IC都有唯一的ID，可以作为序列号使用，增强了设备识别和管理的便利性。 6. 电源管理：支持总线供电、自供电以及高功率USB设备配置，能够适应不同供电环境，提高设备的灵活性。 7. 选择性挂起：支持Windows USB选择性挂起功能，这是一种节能特性，允许设备在不活动时降低功耗。在实际应用中，用户可以通过提供的PCB布局、电路原理图和Gerber文件来设计和制造自己的USB Type C to RS232转换器。这些文件包含了所有必要的制造信息，包括电路板的物理布局、电子元件连接关系以及生产所需的精确制造数据。 PL2303GS芯片为USB Type C to RS232转换提供了高效、灵活且兼容性强的解决方案，帮助用户轻松地连接和通信新旧设备，同时降低了硬件设计的复杂性。

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Product Data Sheet

PL2303GS

Release:2021/11/9

- 8 / 41 -

Rev. 1.0.2

List of Figures

Figure 4-1 PL2303GS Block Diagram ......................................................................................... 4

Figure 7-1 PL2303GS Pin Diagram (SSOP16) .......................................................................... 12

Figure 10-1 USB Bus Powered Design Example ...................................................................... 28

Figure 10-2a USB Self Powered Design Example 1 .................................................................. 29

Figure 10-2b USB Self Powered Design Example 2 .................................................................. 29

Figure 10-3a Chip Reset Control Application ............................................................................ 30

Figure 10-3b Chip Power Reset Timing Diagram ...................................................................... 30

Figure 10-4a IO Power Supply .................................................................................................. 31

Figure 10-4b VDD_IO Voltage Supply ....................................................................................... 31

Figure 10-5 USB to RS232 Design Example ............................................................................. 32

Figure 10-6 USB to RS485/422 Design Example ...................................................................... 33

Figure 10-7a Battery Charging Design Example #1 .................................................................. 34

Figure 10-7b Battery Charging Design Example #2 .................................................................. 35

Figure 10-8 External I2C EEPROM Design Example ................................................................ 36

Figure 12-1 Chip Part Number Information (SSOP) .................................................................. 39

Figure 12-2 PL2303GS Outline Diagram (SSOP16) .................................................................. 40

Product Data Sheet

PL2303GS

Release:2021/11/9

- 9 / 41 -

Rev. 1.0.2

List of Tables

Table 7-1: USB Data Interface Pins .......................................................................................... 13

Table 7-2: UART (Serial Port) Interface Pins ............................................................................. 13

Table 7-3: Configurable GPIO Pins (Shared with Serial Port Pins) ............................................ 13

Table 7-4: Power and Ground Pins ........................................................................................... 14

Table 7-5: Miscellaneous Pins .................................................................................................. 14

Table 7-6: Configurable GPIO Multi-Function Pins .................................................................... 15

Table 7-7: GPIO Multi-Function Option Descriptions ................................................................. 15

Table 9-1 USB Descriptor Configuration ................................................................................... 21

Table 9-2 UART Startup Configuration ...................................................................................... 23

Table 9-3 GPIO (GPA Group) Configuration ............................................................................. 24

Table 9-4 GPIO (GPB Group) Configuration ............................................................................. 26

Table 9-5 Miscellaneous Configuration ..................................................................................... 27

Table 11-1 Absolute Maximum Ratings ..................................................................................... 37

Table 11-2a Operating Voltage and Suspend Current ............................................................... 37

Table 11-2b I/O Pins ................................................................................................................. 37

Table 11-3 Temperature Characteristics ................................................................................... 38

Table 11-4 Baud Rate Characteristics ....................................................................................... 38

Table 12-1 Chip Marking Information ........................................................................................ 39

Table 12-2 SSOP16 Package Dimension ................................................................................. 40

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