The ATmega16U4/ATmega32U4 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega16U4/ATmega32U4 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
Atmel (Microchip Technology) - Atmel was acquired by Microchip in April 2016. Atmel Corporation is an industry leader in the design and manufacture of advanced semiconductors, with focus on microcontrollers, nonvolatile memory, logic, radio frequency (RF) components and sensors. These functions are marketed as standard products, application-specific standard products (ASSPs) or customer-specific products (ASICs) in order to provide a rapid and flexible response to the needs of Atmel’s customers.