应用功能： 全速USB微控制器与嵌入式集线器 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.
