USB to Serial or STC Microcontroller Programmer Module

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.

Specifications

• 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