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PL-2303 Edition USB to Serial Bridge Controller Product Datasheet Document Revision: 1.6 Document Release: April 26, 2005 Prolific Technology Inc. 7F, No. 48, Sec. 3, Nan Kang Rd. Nan Kang, Taipei 115, Taiwan, R.O.C. Telephone: +886-2-2654-6363 Fax: +886-2-2654-6161 E-mail: sales@prolific.com.tw Website: http://www.prolific.com.tw

Revised Date: April 26, 2005 ds_pl2303_v16.doc Disclaimer All the information in this document is subject to change without prior notice. Prolific Technology Inc. does not make any representations or any warranties (implied or otherwise) regarding the accuracy and completeness of this document and shall in no event be liable for any loss of profit or any other commercial damage, including but not limited to special, incidental, consequential, or other damages. Trademarks The Prolific logo is a registered trademark of Prolific Technology Inc. All brand names and product names used in this document are trademarks or registered trademarks of their respective holders. Copyrights Copyright © 2005 Prolific Technology Inc. All rights reserved. No part of this document may be reproduced or transmitted in any form by any means without the express written permission of Prolific Technology Inc. PL-2303 Product Datasheet - 2 - Document Version 1.6

Revision History Revision Description 1.6 Modify Temperature Characteristics (Sec 8.4) Added List of Figures and List of Tables Modify Features section Improve clarity of Pin Assignment diagram Correct Minimum Operating Temperature to 0oC Modify Operating Voltage Add EEPROM Timing Diagram Add Reset Timing Diagram Added Ordering Information Added Reel Packing Information Add Windows CE .NET support feature Buffer for upstream and downstream data flow – change from 96 to 256 bytes For Chip Version H (date code 0206) Add OS Support in Features Section Correct default values in Table 5. Device Configuration Register Add Suspend Current in DC Characteristics Section Move Operating Temperature in DC Characteristics to new section 1.5 1.4 1.3 1.2 Revised Date: April 26, 2005 ds_pl2303_v16.doc Date April 26, 2005 February 02, 2005 August 29, 2002 August 01, 2002 July 03, 2002 PL-2303 Product Datasheet - 3 - Document Version 1.6

Revised Date: April 26, 2005 ds_pl2303_v16.doc Table of Contents 1.0 FEATURES........................................................................................................6 2.0 INTRODUCTION ...............................................................................................6 3.0 FUNCTIONAL BLOCK DIAGRAM....................................................................7 4.0 PIN ASSIGNMENT OUTLINE ...........................................................................8 5.0 PIN ASSIGNMENT & DESCRIPTION...............................................................9 6.0 DATA FORMATS & PROGRAMMABLE BAUD RATE GENERATOR............10 7.0 EXTERNAL EEPROM AND DEVICE CONFIGURATION ............................... 11 8.0 ELECTRICAL, TEMPERATURE & TIMING CHARACTERISTICS.................13 8.1 Absolute Maximum Ratings .................................................................................13 8.2 DC Characteristics...............................................................................................13 8.3 Clock Characteristics ...........................................................................................13 8.4 Temperature Characteristics................................................................................14 8.5 USB Transceiver Characteristics .........................................................................14 8.6 EEPROM Timing Diagram ...................................................................................14 8.7 Reset Timing Diagram .........................................................................................15 9.0 OUTLINE DIAGRAM.......................................................................................16 9.1 SSOP28 Package................................................................................................16 10.0 REEL PACKING INFORMATION....................................................................17 10.1 Carrier Tape (SSOP-28).......................................................................................17 10.2 Reel Dimension ...................................................................................................18 11.0 ORDERING INFORMATION ...........................................................................18 PL-2303 Product Datasheet - 4 - Document Version 1.6

Revised Date: April 26, 2005 ds_pl2303_v16.doc List of Figures Figure 3-1 Block Diagram of PL-2303.......................................................................................7 Figure 4-1 Pin Assignment Outline of PL-2303.........................................................................8 Figure 8-1 Byte Write Timing Diagram....................................................................................14 Figure 8-2 Selective Read Timing Diagram ............................................................................15 Figure 8-3 Reset Timing Diagram ...........................................................................................15 Figure 9-1 Outline Diagram of PL-2303 SSOP28 ...................................................................16 Figure 10-1a SSOP28 Carrier Tape........................................................................................17 Figure 10-1b IC Reel Placements...........................................................................................17 Figure 10-2 Reel Dimension ...................................................................................................18 List of Tables Table 5-1 Pin Assignment & Description ...................................................................................9 Table 6-1 Supported Data Formats.........................................................................................10 Table 6-2 Baud Rate Setting ...................................................................................................10 Table 7-1 EEPROM Contents ................................................................................................. 11 Table 7-2 Device Configuration Register ................................................................................ 11 Table 8-1 Absolute Maximum Ratings.....................................................................................13 Table 8-2 DC Characteristics ..................................................................................................13 Table 8-3 Clock Characteristics ..............................................................................................13 Table 8-4 Temperature Characteristics ...................................................................................14 Table 8-5 USB Transceiver Characteristics ............................................................................14 Table 8-6 Power-On Reset......................................................................................................15 Table 9-1 Package Dimension ................................................................................................16 Table 10-2 Reel Part Number Information ..............................................................................18 Table 11-1 Ordering Information..............................................................................................18 PL-2303 Product Datasheet - 5 - Document Version 1.6

1.0 Features Revised Date: April 26, 2005 ds_pl2303_v16.doc Fully compliant with USB Specification v1.1 and USB CDC v1.1 Supports RS232 Serial interface Supports automatic handshake mode Supports Remote wake-up and power management 256-bytes buffer each for upstream and downstream data flow Supports default ROM or external EEPROM for device configuration On-chip USB transceiver On-chip crystal oscillator running at 12MHz Supports Windows 98/SE, ME, 2000, XP, Windows CE3.0, CE .NET, Linux, and Mac OS Designed for Windows XP/2000 Certified Logo Drivers USB-IF Logo Compliant with TID 10240590 28-Pin SSOP package 2.0 Introduction The PL-2303 operates as a bridge between one USB port and one standard RS232 Serial port. The two large on-chip buffers accommodate data flow from two different buses. The USB bulk-type data is adopted for maximum data transfer. Automatic handshake is supported at the Serial port. With these, a much higher baud rate can be achieved compared to the legacy UART controller. This device is also compliant with USB power management and remote wakeup scheme. Only minimum power is consumed from the host during Suspend. By integrating all the function in a SSOP-28 package, this chip is suitable for cable embedding. Users just simply hook the cable into PC or hub’s USB port, and then they can connect to any RS-232 devices. PL-2303 Product Datasheet - 6 - Document Version 1.6

3.0 Functional Block Diagram USB Port Revised Date: April 26, 2005 ds_pl2303_v16.doc USB Transceiver USB SIE Control Unit DOWN STREAM BUFFER CLOCK SYNTHESIZER OSCILLATOR RS-232 SERIAL INTERFACE REGISTER/ CONFIG/ STATUS/ CONTROL UP STREAM BUFFER EEPROM INTERFACE Serial Port I2C Bus Figure 3-1 Block Diagram of PL-2303 PL-2303 Product Datasheet - 7 - Document Version 1.6

4.0 Pin Assignment Outline Revised Date: April 26, 2005 ds_pl2303_v16.doc SSOP 28 PACKAGE (TOP VIEW) TXD DTR_N RTS_N VDD_232 RXD RI_N GND VDD DSR_N DCD_N CTS_N SHTD_N EE_CLK EE_DATA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 OSC2 OSC1 PLL_TEST GND_PLL VDD_PLL LD_MODE TRI_MODE GND VDD RESET GND_3V3 VDD_3V3 DM 15 DP Figure 4-1 Pin Assignment Outline of PL-2303 PL-2303 Product Datasheet - 8 - Document Version 1.6

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