http://www.keil.com/dd/chip/3205.htm
Device Database Cypress Semiconductor EZ-USB FX2 (CY7C68XXX)
The Cypress Semiconductor EZ-USB FX2 (CY7C68XXX) is a High-speed 8051-based USB 2.0 Device with 41 Interrupts / 6 Priority Levels, Two UARTs, Dual DPTRs, 40 I/O Lines, 3 Timers/Counters, Master/Slave or Programmable (GPIF), 3.3V Operation, ROMless, 256 Bytes On-chip RAM, 4K Bytes On-chip USB Endpoint RAM, and 8K Bytes On-chip Program RAM.
Device Database Cypress Semiconductor EZ-USB FX2 (CY7C68XXX)
The Cypress Semiconductor EZ-USB FX2 (CY7C68XXX) is a High-speed 8051-based USB 2.0 Device with 41 Interrupts / 6 Priority Levels, Two UARTs, Dual DPTRs, 40 I/O Lines, 3 Timers/Counters, Master/Slave or Programmable (GPIF), 3.3V Operation, ROMless, 256 Bytes On-chip RAM, 4K Bytes On-chip USB Endpoint RAM, and 8K Bytes On-chip Program RAM.