These AVR microcontrollers combine USB controller and high performance analog features. The ATmega16U4 and ATmega32U4 reduce system cost in battery powered devices such as gaming accessories. The analog to digital converter can be used to sense motion or pressure in the end application, and the high-speed PWM is ideal for low cost motor control. ATmega16U4 features 16Kbytes of In-System Programmable (ISP) Flash, 1Kbyte of RAM, and 512bytes of EEPROM. ATmega32U4 features 32Kbytes of ISP Flash, 2.5Kbytes of RAM, and 1Kbyte of EEPROM. Available in 44-pin packages.
Atmel Corporation