ATMEGA162-16AU pinout | pin spacing Microchip Technology

ATmega16U2 Pinout

1：Overview of the ATmega16U2:

ATmega16U2 is an 8-bit microcontroller chip based on the AVR RISC architecture, which is designed specifically for USB communication and embedded control.
ATmega16U2 mainly includes USB 2.0 full speed device controller (supporting DFU and CDC class protocols), 16KB Flash program memory, 512 bytes SRAM data memory and other features. ATmega16U2 supports online programming (ISP) and firmware upgrade.
ATmega16U2 The chip uses 32-pin QFN32/VQFP32 package, operating voltage range from 4.5V to 5.5V, integrated hardware USB transceiver, ADC, PWM output and a variety of peripheral interfaces (SPI/I2C/UART).
ATmega16U2 It can be used in the USB to serial port function of Arduino development board (such as Uno/Mega), USB device simulation (such as virtual COM port), industrial control interface, encryption dog, firmware burning tool and low-power Internet of Things terminal. It supports LUFA open source firmware library to realize custom USB protocol development.

2：ATmega16U2 Important pin function definition: