![ATmega328 AVR Development Board Core Board Minimum System ATmega328 AVR Development Board Core Board Minimum System](https://www.bifelectronic.com/2661-large_default/atmega328-avr-development-board-core-board-minimum-system.jpg)
1.Microcontroller chip: ATmega328P.
2.MiniUSB or pin 5V power supply, on board AMS1117-3.3 chip.
3.All IO port are leaded out and marked.
4.On board ISP interface.
5.Reliable reset circuit.
6.AD conversion reference voltage with filter inductor, capacitor.