Universal Serial Bus Features: USB V2.0 Compliant Low Speed (1.5 Mb/s) and Full Speed (12 Mb/s) Supports Control, Interrupt, Isochronous and Bulk Transfers Supports up to 32 Endpoints (16 bidirectional) 1 Kbyte Dual Access RAM for USB On-Chip USB Transceiver with On-Chip Voltage Regulator Interface for Off-Chip USB Transceiver Streaming Parallel Port (SPP) for USB streaming transfers (40/44-pin devices only)Power-Managed Modes: Run: CPU on, Peripherals on Idle: CPU off, Peripherals on Sleep: CPU off, Peripherals off Idle mode Currents Down to 5.8 μA Typical Sleep mode Currents Down to 0.1 μA Typical Timer1 Oscillator: 1.1 μA Typical, 32 kHz, 2V Watchdog Timer: 2.1 μA Typical Two-Speed Oscillator Start-up