47+ Arduino Uno R3 Atmega328 Schematic Images. Next is the complete schematic diagram of a little arduino board for your everyday projects. Use the atmega328p chip in arduino uno boards, there is an smd chip (ic) which works as a usb to serial converter, allows us to program the arduino using our computer (uno r3 uses an atmega 16u2).
It has 14 digital input/output pins (of which 6 can be used as pwm outputs), 6 analog inputs, a 16 mhz ceramic resonator, a usb connection, a power jack, an icsp header, and a reset.
Atmega328 is an mcu from the avr family; The atmega328 microcontroller is the mcu used in arduino uno r3 as a main controller. Complete kicad arduino uno r3 schematic and bom. It has 14 digital input/output pins (of which 6 can be used as pwm outputs), 6 analog inputs, a 16 mhz ceramic resonator, a usb connection, a power jack, an icsp header, and a reset.