AT43USB321 Datasheet | Atmel

.. Features - - - - - - - - - - - - - - - - 8-bit AVR® Core with 83 ns Instruction Cycle Time 16K Bytes ROM Program Memory 512 Bytes SRAM 32 x 8 General Purpose Working Registers 20 Programmable I/O Port Pins Programmable Serial UART SPI Serial Interface One 8-bit Timer/Counter with Separate Prescaler One 16-bit Timer/Counter with Separate Prescaler External and Internal Interrupt Sources Programmable Watchdog Timer with On-chip Oscillator Bus-or Self-powered USB Hub with Four Downstream Ports One Attached Function Port with Three Endpoints Programmable 6/12 MHz Oscillator with PLL On-chip 3.3V Supply for USB 42-pin SDIP and 48-lead TQFP Packages Full-speed USB...