Features ¨ Full compliance with the USB Specification v1.1 ¨ Support the RS232 Serial interface ¨ Support automatic handshake mode ¨ Over 1Mbps transfer rate ¨ Support remote wake-up and power management ¨ Dual data buffers for upstream and downstream data flow ¨ Support default ROM or external EEPROM for device configuration ¨ On chip USB transceiver ¨ On chip crystal oscillator running at 12M Hz ¨ 28 Pins SSOP package