Release Date: July, 2002 ds_pl2303_v14 Revision History Revision Description Date 1.4 • Add Windows CE .NET support feature August 29, 2002 1.3 • Buffer for upstream and downstream data flow – change from 96 to 256 bytes August 01, 2002 1.2 • For Chip Version H (date code 0206) July 03, 2002 • Add OS Support in Features Section • Correct default values in Table 5.
Release Date: July, 2002 ds_pl2303_v14 PL-2303 USB to Serial RS232 Bridge Controller Features Full compliance with the USB Specification v1.1 and USB CDC v1.
Release Date: July, 2002 ds_pl2303_v14 Block Diagram USB Port USB Transceiver REGISTER/ Control USB CONFIG/ Unit SIE STATUS/ CONTROL DOWN UP STREAM STREAM BUFFER BUFFER CLOCK SYNTHESIZE RS-232 SERIAL INTERFACE EEPROM OSCILLATOR INTERFACE Serial Port PL-2303 Product Datasheet -4- I2C Bus Document Revision 1.
Release Date: July, 2002 ds_pl2303_v14 Overview 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.
Release Date: July, 2002 ds_pl2303_v14 Pin No. 22 TRI_STATE 23 LD_MD/ SHTD 24 25 26 27 28 Type: Name Type I I/O VDD_PLL GND_PLL PLL_TEST OSC1 OSC2 I – Input signal P P I I O Description Tri-State This pin is referred after reset. High: RS-232 output inactive during Suspend. Low: RS-232 output tri-state during Suspend. Load Mode/SHTD This pin is input during reset. Pull high with a 220K resistor to indicate the heavy load USB device (500mA).
Release Date: July, 2002 ds_pl2303_v14 Table 3.
Release Date: July, 2002 ds_pl2303_v14 Table 5.
Release Date: July, 2002 ds_pl2303_v14 Electrical Characteristics Absolute Maximum Ratings Item Power Supply Voltage Input Voltage Output Voltage Storage Temperature Ratings -0.3 to 6.0 V -0.3 to VDD+0.3 V -0.3 to VDD+0.3 V o -55 to 150 C DC Characteristics Parameter Symbol Min Typ Max Units Power Supply Current Input Voltage Low High Output Voltage Low High 1 Schmitt Trigger Threshold Voltage* Negative going Positive going 2 Output Voltage, 3.
Release Date: July, 2002 ds_pl2303_v14 USB Transceiver Characteristics Parameter Symbol Min Typ Max Units TR TF 4 4 8 8 15 15 ns ns Cross Point VCR 1.3 -- 2.0 V Output Impedance RD 23 28 33 ohm High Level Output VOH 2.8 -- -- V Low Level Output VOL -- -- 0.7 V High Level Input VIH 2.0 -- -- V Low Level Input VIL -- -- 0.8 V Min Typ Max Units 11.976 12.000 12.024 MHz 83.1 83.3 83.
Release Date: July, 2002 ds_pl2303_v14 Outline Diagram D 28 DETAIL A E E1 1 DETAIL A A2 A R1 e b A1 0.25 L R1 PL-2303 Product Datasheet - 11 - L1 Document Revision 1.
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