Hardware Fetures Single Chip USB Asynchronous Serial Data Transfer • Full Handshaking & Modem Interface Signals • UART I/F Supports 7 / 8 Bit Data, 1 / 2 Stop Bits and Odd/Even/Mark/Space/No Parity • Data rate 300 => 3M Baud (TTL) • Data rate 300 => 1M Baud (RS232) • Data rate 300 => 3M Baud (RS422/RS485) • 384 Byte Receive Buffer / 128 Byte Transmit Buffer for high data throughput • Adjustable RX buffer timeout • Fully Assisted Hardware or X-On / X-Off Handshaking • In-built support for event characters and line break condition • Auto Transmit Buffer control for RS485 • Support for USB Suspend / Resume through SLEEP# and RI# pins • Support for high power USB Bus powered devices through PWREN# pin • Integrated level converter on UART and control signals for interfacing to 5V and 3.3V logic • Integrated 3.3V regulator for USB IO • Integrated Power-On-Reset circuit • Integrated 6MHz – 48Mhz clock multiplier PLL • USB Bulk or Isochronous data transfer modes • 4.35V to 5.25V single supply operation • UHCI / OHCI / EHCI host controller compatible • USB 1.1 and USB 2.0 compatible • USB VID, PID, Serial Number and Product Description strings in external EEPROM • EEPROM programmable on-board via USB • Compact 5 x 5 mm Lead free RoHS compliant QFN32 package.