PL2303HX USB转串口控制器中文数据手册

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"PL2303是一款USB到串口桥接控制器，常用于将设备的串行通信接口转换为USB接口，以便于在现代计算机系统中进行通信。该芯片由Prolific Technology Inc.制造，适用于51单片机和ARM架构，支持RS232、TTL和CMOS电平转换，适应不同的硬件环境。" PL2303是Prolific Technology Inc.推出的一款USB转串口控制器，主要用于解决传统串行通信接口（如RS232）与现代USB接口不兼容的问题。PL2303HX Edition (Chip Rev D) 是其一个特定的版本，它提供了USB到串行的转换功能，使得那些基于串行通信的设备，如模块、传感器或者嵌入式系统，能够通过USB接口与电脑或其他支持USB的设备进行通信。该芯片的主要特性包括： 1. **兼容性**：PL2303支持多种操作系统，包括Windows、Linux、Mac OS等，提供方便的驱动程序支持。 2. **电平转换**：它能够处理RS232的负逻辑电平（通常为-12V至-15V表示逻辑1，+12V至+15V表示逻辑0），同时也能与TTL（0V/5V）和CMOS（0V/3.3V）电平的设备直接接口，增强了其在不同硬件环境中的适应性。 3. **数据速率**：PL2303可以支持高达230.4kbps的数据传输速率，满足大多数应用需求。 4. **电源管理**：具有低功耗设计，适合便携式设备和电池供电的应用。 5. **封装形式**：通常提供SOP或QFN封装，便于在PCB布局中集成。在实际应用中，PL2303常被用于单片机开发板、嵌入式系统、模块通信、调试工具以及需要串口通信的物联网设备中。用户可以通过51单片机或ARM处理器与PL2303交互，实现USB到串口的转换，简化了硬件设计并提高了设备的连接性。文档版本1.1的免责声明指出，所有信息可能会随时更改，且Prolific Technology Inc.不对文档的准确性或完整性做出任何明示或暗示的保证，也不会对因使用此文档导致的任何损失负责。商标和版权信息强调了Prolific的品牌权益和文档的版权归属。 PL2303是USB通信领域的一个重要组件，它使得传统的串行通信技术能够无缝地融入现代USB接口的生态系统中。对于电子工程师和开发者来说，理解并掌握PL2303的工作原理和应用方法是十分必要的。

Revised Date:

April 16, 2007

ds_pl2303HXD_v1.1.doc

PL-2303HX (Rev D) Product Datasheet - 5 - Document Version 1.1

11.0 REEL PACKING INFORMATION..................................................................... 25

11.1 Carrier Tape (SSOP-28) ...................................................................................... 25

11.2 Reel Dimension................................................................................................... 26

12.0 ORDERING INFORMATION........................................................................... 26

Revised Date:

April 16, 2007

ds_pl2303HXD_v1.1.doc

PL-2303HX (Rev D) Product Datasheet - 6 - Document Version 1.1

List of Figures

Figure 2-1 Block Diagram of PL-2303HX (Rev D).................................................................... 9

Figure 4-1 Pin Assignment Outline of PL-2303HX (Rev D) SSOP28......................................11

Figure 4-2 Pin Assignment Outline of PL-2303HX (Rev D) QFN32 ....................................... 12

Figure 10-1 Power-On Reset Diagram................................................................................... 22

Figure 10-1 Outline Diagram of PL-2303HX (Rev D) SSOP28 .............................................. 23

Figure 10-2 Outline Diagram of PL-2303HX (Rev D) QFN32................................................. 24

Figure 11-1a SSOP28 Carrier Tape........................................................................................ 25

Figure 11-1b IC Reel Placements........................................................................................... 25

Figure 11-2 Reel Dimension................................................................................................... 26

List of Tables

Table 5-1 Pin Assignment & Description (SSOP28) ............................................................... 13

Table 5-2 Pin Assignment & Description (QFN32).................................................................. 14

Table 6-1 Device Descriptor ................................................................................................... 15

Table 6-2 Configuration Descriptor......................................................................................... 15

Table 6-3 Interface Descriptor ................................................................................................ 16

Table 7-4 Endpoint1 Descriptor .............................................................................................. 16

Table 6-5 Endpoint2 Descriptor .............................................................................................. 16

Table 6-6 Endpoint3 Descriptor .............................................................................................. 17

Table 6-7a String Descriptor – Language ID........................................................................... 17

Table 6-7b String Descriptor – Manufacturer.......................................................................... 17

Table 6-7c String Descriptor – Product................................................................................... 18

Table 6-7d String Descriptor – Serial Number ........................................................................ 18

Table 8-1 Supported Data Formats ........................................................................................ 19

Table 8-2 Baud Rate Settings................................................................................................. 19

Table 9-1 Absolute Maximum Ratings .................................................................................... 20

Table 9-2a Operating Voltage and Suspend Current.............................................................. 20

Table 9-2b 3.3V I/O Pins......................................................................................................... 20

Table 9-2c VDD_325@3.3V Serial I/O Pins ........................................................................... 21

Table 9-2d VDD_325@2.5V Serial I/O Pins ........................................................................... 21

Table 9-2e VDD_325@1.8V Serial I/O Pins ........................................................................... 21

Table 9-3 Clock Characteristics.............................................................................................. 21

Table 9-4 Temperature Characteristics................................................................................... 22

Table 9-5 Leakage Current and Capacitance......................................................................... 22

Table 9-6 Power-On Reset ..................................................................................................... 22

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