AT43USB320A

Features AVR® 8-bit RISC Microcontroller with 83 ns Instruction Cycle Time USB Hub with One Attached and Four External Ports USB Function with Two Programmable Endpoints External Program Memory, 512-byte Data SRAM 32 x 8 General Purpose Working Registers 32 Programmable I/O Port Pins Programmable Serial UART Master/Slave SPI Serial Interface One 8-bit Timer/Counter with Separate Pre-scaler One 16-bit Timer/Counter with Separate Pre-scaler and Two PWMs External and Internal Interrupt Sources Programmable Watchdog Timer 6 MHz Oscillator with On-chip PLL 5V Operation with On-chip 3.3V Power Supply 100-lead LQFP Package Description The Atmel AT43USB320A is an 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the AT43USB320A achieves throughputs approaching 12 MIPS. The AVR core combines a rich instruction set with 32 general-purpose working registers. All 32 registers are directly connected to the ALU allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. The AT43USB320A features an on-chip 512-byte of data memory. It is supported by a www.DataSheet4U.com standard set of peripherals such as timer/counter modules, watchdog timer and intern al an d ext er n al int er r u p t s ou r ce s. Th e m a...